diff options
Diffstat (limited to 'docs/sqlglot/optimizer')
20 files changed, 3780 insertions, 3648 deletions
diff --git a/docs/sqlglot/optimizer/annotate_types.html b/docs/sqlglot/optimizer/annotate_types.html index 74dff7f..a60f38d 100644 --- a/docs/sqlglot/optimizer/annotate_types.html +++ b/docs/sqlglot/optimizer/annotate_types.html @@ -3,7 +3,7 @@ <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> - <meta name="generator" content="pdoc 13.0.0"/> + <meta name="generator" content="pdoc 13.0.1"/> <title>sqlglot.optimizer.annotate_types API documentation</title> <style>/*! * Bootstrap Reboot v5.0.0 (https://getbootstrap.com/) * Copyright 2011-2021 The Bootstrap Authors * Copyright 2011-2021 Twitter, Inc. * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE) * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md) */*,::after,::before{box-sizing:border-box}@media (prefers-reduced-motion:no-preference){:root{scroll-behavior:smooth}}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","Liberation Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";font-size:1rem;font-weight:400;line-height:1.5;color:#212529;background-color:#fff;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}hr{margin:1rem 0;color:inherit;background-color:currentColor;border:0;opacity:.25}hr:not([size]){height:1px}h1,h2,h3,h4,h5,h6{margin-top:0;margin-bottom:.5rem;font-weight:500;line-height:1.2}h1{font-size:calc(1.375rem + 1.5vw)}@media (min-width:1200px){h1{font-size:2.5rem}}h2{font-size:calc(1.325rem + .9vw)}@media (min-width:1200px){h2{font-size:2rem}}h3{font-size:calc(1.3rem + .6vw)}@media (min-width:1200px){h3{font-size:1.75rem}}h4{font-size:calc(1.275rem + .3vw)}@media (min-width:1200px){h4{font-size:1.5rem}}h5{font-size:1.25rem}h6{font-size:1rem}p{margin-top:0;margin-bottom:1rem}abbr[data-bs-original-title],abbr[title]{-webkit-text-decoration:underline dotted;text-decoration:underline dotted;cursor:help;-webkit-text-decoration-skip-ink:none;text-decoration-skip-ink:none}address{margin-bottom:1rem;font-style:normal;line-height:inherit}ol,ul{padding-left:2rem}dl,ol,ul{margin-top:0;margin-bottom:1rem}ol ol,ol ul,ul ol,ul ul{margin-bottom:0}dt{font-weight:700}dd{margin-bottom:.5rem;margin-left:0}blockquote{margin:0 0 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1rem}img,svg{vertical-align:middle}table{caption-side:bottom;border-collapse:collapse}caption{padding-top:.5rem;padding-bottom:.5rem;color:#6c757d;text-align:left}th{text-align:inherit;text-align:-webkit-match-parent}tbody,td,tfoot,th,thead,tr{border-color:inherit;border-style:solid;border-width:0}label{display:inline-block}button{border-radius:0}button:focus:not(:focus-visible){outline:0}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,select{text-transform:none}[role=button]{cursor:pointer}select{word-wrap:normal}select:disabled{opacity:1}[list]::-webkit-calendar-picker-indicator{display:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]:not(:disabled),[type=reset]:not(:disabled),[type=submit]:not(:disabled),button:not(:disabled){cursor:pointer}::-moz-focus-inner{padding:0;border-style:none}textarea{resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{float:left;width:100%;padding:0;margin-bottom:.5rem;font-size:calc(1.275rem + .3vw);line-height:inherit}@media (min-width:1200px){legend{font-size:1.5rem}}legend+*{clear:left}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-fields-wrapper,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-text,::-webkit-datetime-edit-year-field{padding:0}::-webkit-inner-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:textfield}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-color-swatch-wrapper{padding:0}::file-selector-button{font:inherit}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}iframe{border:0}summary{display:list-item;cursor:pointer}progress{vertical-align:baseline}[hidden]{display:none!important}</style> @@ -28,8 +28,8 @@ - <h2>API Documentation</h2> - <ul class="memberlist"> + <h2>API Documentation</h2> + <ul class="memberlist"> <li> <a class="function" href="#annotate_types">annotate_types</a> </li> @@ -69,7 +69,7 @@ <label class="view-source-button" for="mod-annotate_types-view-source"><span>View Source</span></label> <div class="pdoc-code codehilite"><pre><span></span><span id="L-1"><a href="#L-1"><span class="linenos"> 1</span></a><span class="kn">from</span> <span class="nn">sqlglot</span> <span class="kn">import</span> <span class="n">exp</span> -</span><span id="L-2"><a href="#L-2"><span class="linenos"> 2</span></a><span class="kn">from</span> <span class="nn">sqlglot.helper</span> <span class="kn">import</span> <span class="n">ensure_collection</span><span class="p">,</span> <span class="n">ensure_list</span><span class="p">,</span> <span class="n">subclasses</span> +</span><span id="L-2"><a href="#L-2"><span class="linenos"> 2</span></a><span class="kn">from</span> <span class="nn">sqlglot.helper</span> <span class="kn">import</span> <span class="n">ensure_list</span><span class="p">,</span> <span class="n">subclasses</span> </span><span id="L-3"><a href="#L-3"><span class="linenos"> 3</span></a><span class="kn">from</span> <span class="nn">sqlglot.optimizer.scope</span> <span class="kn">import</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">traverse_scope</span> </span><span id="L-4"><a href="#L-4"><span class="linenos"> 4</span></a><span class="kn">from</span> <span class="nn">sqlglot.schema</span> <span class="kn">import</span> <span class="n">ensure_schema</span> </span><span id="L-5"><a href="#L-5"><span class="linenos"> 5</span></a> @@ -178,295 +178,293 @@ </span><span id="L-108"><a href="#L-108"><span class="linenos">108</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">If</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_by_args</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="s2">"true"</span><span class="p">,</span> <span class="s2">"false"</span><span class="p">),</span> </span><span id="L-109"><a href="#L-109"><span class="linenos">109</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Coalesce</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_by_args</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="s2">"this"</span><span class="p">,</span> <span class="s2">"expressions"</span><span class="p">),</span> </span><span id="L-110"><a href="#L-110"><span class="linenos">110</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">IfNull</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_by_args</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="s2">"this"</span><span class="p">,</span> <span class="s2">"expression"</span><span class="p">),</span> -</span><span id="L-111"><a href="#L-111"><span class="linenos">111</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">ConcatWs</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> -</span><span id="L-112"><a href="#L-112"><span class="linenos">112</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GroupConcat</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> -</span><span id="L-113"><a href="#L-113"><span class="linenos">113</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span> -</span><span id="L-114"><a href="#L-114"><span class="linenos">114</span></a> <span class="p">),</span> -</span><span id="L-115"><a href="#L-115"><span class="linenos">115</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">ArrayConcat</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> -</span><span id="L-116"><a href="#L-116"><span class="linenos">116</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span> -</span><span id="L-117"><a href="#L-117"><span class="linenos">117</span></a> <span class="p">),</span> -</span><span id="L-118"><a href="#L-118"><span class="linenos">118</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Initcap</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> -</span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Least</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_by_args</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="s2">"expressions"</span><span class="p">),</span> -</span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Length</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BIGINT</span><span class="p">),</span> -</span><span id="L-121"><a href="#L-121"><span class="linenos">121</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Levenshtein</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span><span class="p">),</span> -</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Ln</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Log</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="L-124"><a href="#L-124"><span class="linenos">124</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Log2</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Log10</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Lower</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> -</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Month</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TINYINT</span><span class="p">),</span> -</span><span id="L-128"><a href="#L-128"><span class="linenos">128</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Pow</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="L-129"><a href="#L-129"><span class="linenos">129</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Quantile</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">ApproxQuantile</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> -</span><span id="L-131"><a href="#L-131"><span class="linenos">131</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span> -</span><span id="L-132"><a href="#L-132"><span class="linenos">132</span></a> <span class="p">),</span> -</span><span id="L-133"><a href="#L-133"><span class="linenos">133</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">RegexpLike</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> -</span><span id="L-134"><a href="#L-134"><span class="linenos">134</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BOOLEAN</span> -</span><span id="L-135"><a href="#L-135"><span class="linenos">135</span></a> <span class="p">),</span> -</span><span id="L-136"><a href="#L-136"><span class="linenos">136</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Round</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="L-137"><a href="#L-137"><span class="linenos">137</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">SafeDivide</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="L-138"><a href="#L-138"><span class="linenos">138</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Substring</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> -</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">StrPosition</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span><span class="p">),</span> -</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">StrToDate</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">),</span> -</span><span id="L-141"><a href="#L-141"><span class="linenos">141</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">StrToTime</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> -</span><span id="L-142"><a href="#L-142"><span class="linenos">142</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span> -</span><span id="L-143"><a href="#L-143"><span class="linenos">143</span></a> <span class="p">),</span> -</span><span id="L-144"><a href="#L-144"><span class="linenos">144</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Sqrt</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="L-145"><a href="#L-145"><span class="linenos">145</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Stddev</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">StddevPop</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">StddevSamp</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="L-148"><a href="#L-148"><span class="linenos">148</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TimeToStr</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> -</span><span id="L-149"><a href="#L-149"><span class="linenos">149</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TimeToTimeStr</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> -</span><span id="L-150"><a href="#L-150"><span class="linenos">150</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span> -</span><span id="L-151"><a href="#L-151"><span class="linenos">151</span></a> <span class="p">),</span> -</span><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TimeStrToDate</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> -</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span> -</span><span id="L-154"><a href="#L-154"><span class="linenos">154</span></a> <span class="p">),</span> -</span><span id="L-155"><a href="#L-155"><span class="linenos">155</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TimeStrToTime</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> -</span><span id="L-156"><a href="#L-156"><span class="linenos">156</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span> -</span><span id="L-157"><a href="#L-157"><span class="linenos">157</span></a> <span class="p">),</span> -</span><span id="L-158"><a href="#L-158"><span class="linenos">158</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Trim</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> -</span><span id="L-159"><a href="#L-159"><span class="linenos">159</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TsOrDsToDateStr</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> -</span><span id="L-160"><a href="#L-160"><span class="linenos">160</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span> -</span><span id="L-161"><a href="#L-161"><span class="linenos">161</span></a> <span class="p">),</span> -</span><span id="L-162"><a href="#L-162"><span class="linenos">162</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TsOrDsToDate</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">),</span> -</span><span id="L-163"><a href="#L-163"><span class="linenos">163</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TsOrDiToDi</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span><span class="p">),</span> -</span><span id="L-164"><a href="#L-164"><span class="linenos">164</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">UnixToStr</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> -</span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">UnixToTime</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> -</span><span id="L-166"><a href="#L-166"><span class="linenos">166</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span> -</span><span id="L-167"><a href="#L-167"><span class="linenos">167</span></a> <span class="p">),</span> -</span><span id="L-168"><a href="#L-168"><span class="linenos">168</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">UnixToTimeStr</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> -</span><span id="L-169"><a href="#L-169"><span class="linenos">169</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span> -</span><span id="L-170"><a href="#L-170"><span class="linenos">170</span></a> <span class="p">),</span> -</span><span id="L-171"><a href="#L-171"><span class="linenos">171</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Upper</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> -</span><span id="L-172"><a href="#L-172"><span class="linenos">172</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Variance</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="L-173"><a href="#L-173"><span class="linenos">173</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">VariancePop</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> -</span><span id="L-174"><a href="#L-174"><span class="linenos">174</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span> -</span><span id="L-175"><a href="#L-175"><span class="linenos">175</span></a> <span class="p">),</span> -</span><span id="L-176"><a href="#L-176"><span class="linenos">176</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Week</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TINYINT</span><span class="p">),</span> -</span><span id="L-177"><a href="#L-177"><span class="linenos">177</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Year</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TINYINT</span><span class="p">),</span> -</span><span id="L-178"><a href="#L-178"><span class="linenos">178</span></a> <span class="p">}</span> -</span><span id="L-179"><a href="#L-179"><span class="linenos">179</span></a> -</span><span id="L-180"><a href="#L-180"><span class="linenos">180</span></a> <span class="c1"># Reference: https://spark.apache.org/docs/3.2.0/sql-ref-ansi-compliance.html</span> -</span><span id="L-181"><a href="#L-181"><span class="linenos">181</span></a> <span class="n">COERCES_TO</span> <span class="o">=</span> <span class="p">{</span> -</span><span id="L-182"><a href="#L-182"><span class="linenos">182</span></a> <span class="c1"># CHAR < NCHAR < VARCHAR < NVARCHAR < TEXT</span> -</span><span id="L-183"><a href="#L-183"><span class="linenos">183</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TEXT</span><span class="p">:</span> <span class="nb">set</span><span class="p">(),</span> -</span><span id="L-184"><a href="#L-184"><span class="linenos">184</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NVARCHAR</span><span class="p">:</span> <span class="p">{</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TEXT</span><span class="p">},</span> -</span><span id="L-185"><a href="#L-185"><span class="linenos">185</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">:</span> <span class="p">{</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NVARCHAR</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TEXT</span><span class="p">},</span> -</span><span id="L-186"><a href="#L-186"><span class="linenos">186</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NCHAR</span><span class="p">:</span> <span class="p">{</span> -</span><span id="L-187"><a href="#L-187"><span class="linenos">187</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">,</span> -</span><span id="L-188"><a href="#L-188"><span class="linenos">188</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NVARCHAR</span><span class="p">,</span> -</span><span id="L-189"><a href="#L-189"><span class="linenos">189</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TEXT</span><span class="p">,</span> -</span><span id="L-190"><a href="#L-190"><span class="linenos">190</span></a> <span class="p">},</span> -</span><span id="L-191"><a href="#L-191"><span class="linenos">191</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">CHAR</span><span class="p">:</span> <span class="p">{</span> -</span><span id="L-192"><a href="#L-192"><span class="linenos">192</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NCHAR</span><span class="p">,</span> -</span><span id="L-193"><a href="#L-193"><span class="linenos">193</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">,</span> -</span><span id="L-194"><a href="#L-194"><span class="linenos">194</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NVARCHAR</span><span class="p">,</span> -</span><span id="L-195"><a href="#L-195"><span class="linenos">195</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TEXT</span><span class="p">,</span> -</span><span id="L-196"><a href="#L-196"><span class="linenos">196</span></a> <span class="p">},</span> -</span><span id="L-197"><a href="#L-197"><span class="linenos">197</span></a> <span class="c1"># TINYINT < SMALLINT < INT < BIGINT < DECIMAL < FLOAT < DOUBLE</span> -</span><span id="L-198"><a href="#L-198"><span class="linenos">198</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">:</span> <span class="nb">set</span><span class="p">(),</span> -</span><span id="L-199"><a href="#L-199"><span class="linenos">199</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">:</span> <span class="p">{</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">},</span> -</span><span id="L-200"><a href="#L-200"><span class="linenos">200</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DECIMAL</span><span class="p">:</span> <span class="p">{</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">},</span> -</span><span id="L-201"><a href="#L-201"><span class="linenos">201</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BIGINT</span><span class="p">:</span> <span class="p">{</span> -</span><span id="L-202"><a href="#L-202"><span class="linenos">202</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DECIMAL</span><span class="p">,</span> -</span><span id="L-203"><a href="#L-203"><span class="linenos">203</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">,</span> -</span><span id="L-204"><a href="#L-204"><span class="linenos">204</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">,</span> -</span><span id="L-205"><a href="#L-205"><span class="linenos">205</span></a> <span class="p">},</span> -</span><span id="L-206"><a href="#L-206"><span class="linenos">206</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span><span class="p">:</span> <span class="p">{</span> -</span><span id="L-207"><a href="#L-207"><span class="linenos">207</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BIGINT</span><span class="p">,</span> -</span><span id="L-208"><a href="#L-208"><span class="linenos">208</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DECIMAL</span><span class="p">,</span> -</span><span id="L-209"><a href="#L-209"><span class="linenos">209</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">,</span> -</span><span id="L-210"><a href="#L-210"><span class="linenos">210</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">,</span> -</span><span id="L-211"><a href="#L-211"><span class="linenos">211</span></a> <span class="p">},</span> -</span><span id="L-212"><a href="#L-212"><span class="linenos">212</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">SMALLINT</span><span class="p">:</span> <span class="p">{</span> -</span><span id="L-213"><a href="#L-213"><span class="linenos">213</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span><span class="p">,</span> -</span><span id="L-214"><a href="#L-214"><span class="linenos">214</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BIGINT</span><span class="p">,</span> -</span><span id="L-215"><a href="#L-215"><span class="linenos">215</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DECIMAL</span><span class="p">,</span> -</span><span id="L-216"><a href="#L-216"><span class="linenos">216</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">,</span> -</span><span id="L-217"><a href="#L-217"><span class="linenos">217</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">,</span> -</span><span id="L-218"><a href="#L-218"><span class="linenos">218</span></a> <span class="p">},</span> -</span><span id="L-219"><a href="#L-219"><span class="linenos">219</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TINYINT</span><span class="p">:</span> <span class="p">{</span> -</span><span id="L-220"><a href="#L-220"><span class="linenos">220</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">SMALLINT</span><span class="p">,</span> -</span><span id="L-221"><a href="#L-221"><span class="linenos">221</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span><span class="p">,</span> -</span><span id="L-222"><a href="#L-222"><span class="linenos">222</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BIGINT</span><span class="p">,</span> -</span><span id="L-223"><a href="#L-223"><span class="linenos">223</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DECIMAL</span><span class="p">,</span> -</span><span id="L-224"><a href="#L-224"><span class="linenos">224</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">,</span> -</span><span id="L-225"><a href="#L-225"><span class="linenos">225</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">,</span> -</span><span id="L-226"><a href="#L-226"><span class="linenos">226</span></a> <span class="p">},</span> -</span><span id="L-227"><a href="#L-227"><span class="linenos">227</span></a> <span class="c1"># DATE < DATETIME < TIMESTAMP < TIMESTAMPTZ < TIMESTAMPLTZ</span> -</span><span id="L-228"><a href="#L-228"><span class="linenos">228</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPLTZ</span><span class="p">:</span> <span class="nb">set</span><span class="p">(),</span> -</span><span id="L-229"><a href="#L-229"><span class="linenos">229</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPTZ</span><span class="p">:</span> <span class="p">{</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPLTZ</span><span class="p">},</span> -</span><span id="L-230"><a href="#L-230"><span class="linenos">230</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span><span class="p">:</span> <span class="p">{</span> -</span><span id="L-231"><a href="#L-231"><span class="linenos">231</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPTZ</span><span class="p">,</span> -</span><span id="L-232"><a href="#L-232"><span class="linenos">232</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPLTZ</span><span class="p">,</span> -</span><span id="L-233"><a href="#L-233"><span class="linenos">233</span></a> <span class="p">},</span> -</span><span id="L-234"><a href="#L-234"><span class="linenos">234</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</span><span class="p">:</span> <span class="p">{</span> -</span><span id="L-235"><a href="#L-235"><span class="linenos">235</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span><span class="p">,</span> -</span><span id="L-236"><a href="#L-236"><span class="linenos">236</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPTZ</span><span class="p">,</span> -</span><span id="L-237"><a href="#L-237"><span class="linenos">237</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPLTZ</span><span class="p">,</span> -</span><span id="L-238"><a href="#L-238"><span class="linenos">238</span></a> <span class="p">},</span> -</span><span id="L-239"><a href="#L-239"><span class="linenos">239</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">:</span> <span class="p">{</span> -</span><span id="L-240"><a href="#L-240"><span class="linenos">240</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</span><span class="p">,</span> -</span><span id="L-241"><a href="#L-241"><span class="linenos">241</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span><span class="p">,</span> -</span><span id="L-242"><a href="#L-242"><span class="linenos">242</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPTZ</span><span class="p">,</span> -</span><span id="L-243"><a href="#L-243"><span class="linenos">243</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPLTZ</span><span class="p">,</span> -</span><span id="L-244"><a href="#L-244"><span class="linenos">244</span></a> <span class="p">},</span> -</span><span id="L-245"><a href="#L-245"><span class="linenos">245</span></a> <span class="p">}</span> -</span><span id="L-246"><a href="#L-246"><span class="linenos">246</span></a> -</span><span id="L-247"><a href="#L-247"><span class="linenos">247</span></a> <span class="n">TRAVERSABLES</span> <span class="o">=</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Union</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">)</span> +</span><span id="L-111"><a href="#L-111"><span class="linenos">111</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Concat</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> +</span><span id="L-112"><a href="#L-112"><span class="linenos">112</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">ConcatWs</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> +</span><span id="L-113"><a href="#L-113"><span class="linenos">113</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GroupConcat</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> +</span><span id="L-114"><a href="#L-114"><span class="linenos">114</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span> +</span><span id="L-115"><a href="#L-115"><span class="linenos">115</span></a> <span class="p">),</span> +</span><span id="L-116"><a href="#L-116"><span class="linenos">116</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">ArrayConcat</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> +</span><span id="L-117"><a href="#L-117"><span class="linenos">117</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span> +</span><span id="L-118"><a href="#L-118"><span class="linenos">118</span></a> <span class="p">),</span> +</span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Initcap</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> +</span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Interval</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INTERVAL</span><span class="p">),</span> +</span><span id="L-121"><a href="#L-121"><span class="linenos">121</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Least</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_by_args</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="s2">"expressions"</span><span class="p">),</span> +</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Length</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BIGINT</span><span class="p">),</span> +</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Levenshtein</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span><span class="p">),</span> +</span><span id="L-124"><a href="#L-124"><span class="linenos">124</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Ln</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Log</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Log2</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Log10</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="L-128"><a href="#L-128"><span class="linenos">128</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Lower</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> +</span><span id="L-129"><a href="#L-129"><span class="linenos">129</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Month</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TINYINT</span><span class="p">),</span> +</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Pow</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="L-131"><a href="#L-131"><span class="linenos">131</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Quantile</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="L-132"><a href="#L-132"><span class="linenos">132</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">ApproxQuantile</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> +</span><span id="L-133"><a href="#L-133"><span class="linenos">133</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span> +</span><span id="L-134"><a href="#L-134"><span class="linenos">134</span></a> <span class="p">),</span> +</span><span id="L-135"><a href="#L-135"><span class="linenos">135</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">RegexpLike</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> +</span><span id="L-136"><a href="#L-136"><span class="linenos">136</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BOOLEAN</span> +</span><span id="L-137"><a href="#L-137"><span class="linenos">137</span></a> <span class="p">),</span> +</span><span id="L-138"><a href="#L-138"><span class="linenos">138</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Round</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">SafeDivide</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Substring</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> +</span><span id="L-141"><a href="#L-141"><span class="linenos">141</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">StrPosition</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span><span class="p">),</span> +</span><span id="L-142"><a href="#L-142"><span class="linenos">142</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">StrToDate</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">),</span> +</span><span id="L-143"><a href="#L-143"><span class="linenos">143</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">StrToTime</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> +</span><span id="L-144"><a href="#L-144"><span class="linenos">144</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span> +</span><span id="L-145"><a href="#L-145"><span class="linenos">145</span></a> <span class="p">),</span> +</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Sqrt</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Stddev</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="L-148"><a href="#L-148"><span class="linenos">148</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">StddevPop</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="L-149"><a href="#L-149"><span class="linenos">149</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">StddevSamp</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="L-150"><a href="#L-150"><span class="linenos">150</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TimeToStr</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> +</span><span id="L-151"><a href="#L-151"><span class="linenos">151</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TimeToTimeStr</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> +</span><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span> +</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a> <span class="p">),</span> +</span><span id="L-154"><a href="#L-154"><span class="linenos">154</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TimeStrToDate</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> +</span><span id="L-155"><a href="#L-155"><span class="linenos">155</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span> +</span><span id="L-156"><a href="#L-156"><span class="linenos">156</span></a> <span class="p">),</span> +</span><span id="L-157"><a href="#L-157"><span class="linenos">157</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TimeStrToTime</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> +</span><span id="L-158"><a href="#L-158"><span class="linenos">158</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span> +</span><span id="L-159"><a href="#L-159"><span class="linenos">159</span></a> <span class="p">),</span> +</span><span id="L-160"><a href="#L-160"><span class="linenos">160</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Trim</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> +</span><span id="L-161"><a href="#L-161"><span class="linenos">161</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TsOrDsToDateStr</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> +</span><span id="L-162"><a href="#L-162"><span class="linenos">162</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span> +</span><span id="L-163"><a href="#L-163"><span class="linenos">163</span></a> <span class="p">),</span> +</span><span id="L-164"><a href="#L-164"><span class="linenos">164</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TsOrDsToDate</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">),</span> +</span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TsOrDiToDi</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span><span class="p">),</span> +</span><span id="L-166"><a href="#L-166"><span class="linenos">166</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">UnixToStr</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> +</span><span id="L-167"><a href="#L-167"><span class="linenos">167</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">UnixToTime</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> +</span><span id="L-168"><a href="#L-168"><span class="linenos">168</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span> +</span><span id="L-169"><a href="#L-169"><span class="linenos">169</span></a> <span class="p">),</span> +</span><span id="L-170"><a href="#L-170"><span class="linenos">170</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">UnixToTimeStr</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> +</span><span id="L-171"><a href="#L-171"><span class="linenos">171</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span> +</span><span id="L-172"><a href="#L-172"><span class="linenos">172</span></a> <span class="p">),</span> +</span><span id="L-173"><a href="#L-173"><span class="linenos">173</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Upper</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> +</span><span id="L-174"><a href="#L-174"><span class="linenos">174</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Variance</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="L-175"><a href="#L-175"><span class="linenos">175</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">VariancePop</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> +</span><span id="L-176"><a href="#L-176"><span class="linenos">176</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span> +</span><span id="L-177"><a href="#L-177"><span class="linenos">177</span></a> <span class="p">),</span> +</span><span id="L-178"><a href="#L-178"><span class="linenos">178</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Week</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TINYINT</span><span class="p">),</span> +</span><span id="L-179"><a href="#L-179"><span class="linenos">179</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Year</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TINYINT</span><span class="p">),</span> +</span><span id="L-180"><a href="#L-180"><span class="linenos">180</span></a> <span class="p">}</span> +</span><span id="L-181"><a href="#L-181"><span class="linenos">181</span></a> +</span><span id="L-182"><a href="#L-182"><span class="linenos">182</span></a> <span class="c1"># Reference: https://spark.apache.org/docs/3.2.0/sql-ref-ansi-compliance.html</span> +</span><span id="L-183"><a href="#L-183"><span class="linenos">183</span></a> <span class="n">COERCES_TO</span> <span class="o">=</span> <span class="p">{</span> +</span><span id="L-184"><a href="#L-184"><span class="linenos">184</span></a> <span class="c1"># CHAR < NCHAR < VARCHAR < NVARCHAR < TEXT</span> +</span><span id="L-185"><a href="#L-185"><span class="linenos">185</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TEXT</span><span class="p">:</span> <span class="nb">set</span><span class="p">(),</span> +</span><span id="L-186"><a href="#L-186"><span class="linenos">186</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NVARCHAR</span><span class="p">:</span> <span class="p">{</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TEXT</span><span class="p">},</span> +</span><span id="L-187"><a href="#L-187"><span class="linenos">187</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">:</span> <span class="p">{</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NVARCHAR</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TEXT</span><span class="p">},</span> +</span><span id="L-188"><a href="#L-188"><span class="linenos">188</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NCHAR</span><span class="p">:</span> <span class="p">{</span> +</span><span id="L-189"><a href="#L-189"><span class="linenos">189</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">,</span> +</span><span id="L-190"><a href="#L-190"><span class="linenos">190</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NVARCHAR</span><span class="p">,</span> +</span><span id="L-191"><a href="#L-191"><span class="linenos">191</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TEXT</span><span class="p">,</span> +</span><span id="L-192"><a href="#L-192"><span class="linenos">192</span></a> <span class="p">},</span> +</span><span id="L-193"><a href="#L-193"><span class="linenos">193</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">CHAR</span><span class="p">:</span> <span class="p">{</span> +</span><span id="L-194"><a href="#L-194"><span class="linenos">194</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NCHAR</span><span class="p">,</span> +</span><span id="L-195"><a href="#L-195"><span class="linenos">195</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">,</span> +</span><span id="L-196"><a href="#L-196"><span class="linenos">196</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NVARCHAR</span><span class="p">,</span> +</span><span id="L-197"><a href="#L-197"><span class="linenos">197</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TEXT</span><span class="p">,</span> +</span><span id="L-198"><a href="#L-198"><span class="linenos">198</span></a> <span class="p">},</span> +</span><span id="L-199"><a href="#L-199"><span class="linenos">199</span></a> <span class="c1"># TINYINT < SMALLINT < INT < BIGINT < DECIMAL < FLOAT < DOUBLE</span> +</span><span id="L-200"><a href="#L-200"><span class="linenos">200</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">:</span> <span class="nb">set</span><span class="p">(),</span> +</span><span id="L-201"><a href="#L-201"><span class="linenos">201</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">:</span> <span class="p">{</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">},</span> +</span><span id="L-202"><a href="#L-202"><span class="linenos">202</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DECIMAL</span><span class="p">:</span> <span class="p">{</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">},</span> +</span><span id="L-203"><a href="#L-203"><span class="linenos">203</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BIGINT</span><span class="p">:</span> <span class="p">{</span> +</span><span id="L-204"><a href="#L-204"><span class="linenos">204</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DECIMAL</span><span class="p">,</span> +</span><span id="L-205"><a href="#L-205"><span class="linenos">205</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">,</span> +</span><span id="L-206"><a href="#L-206"><span class="linenos">206</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">,</span> +</span><span id="L-207"><a href="#L-207"><span class="linenos">207</span></a> <span class="p">},</span> +</span><span id="L-208"><a href="#L-208"><span class="linenos">208</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span><span class="p">:</span> <span class="p">{</span> +</span><span id="L-209"><a href="#L-209"><span class="linenos">209</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BIGINT</span><span class="p">,</span> +</span><span id="L-210"><a href="#L-210"><span class="linenos">210</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DECIMAL</span><span class="p">,</span> +</span><span id="L-211"><a href="#L-211"><span class="linenos">211</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">,</span> +</span><span id="L-212"><a href="#L-212"><span class="linenos">212</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">,</span> +</span><span id="L-213"><a href="#L-213"><span class="linenos">213</span></a> <span class="p">},</span> +</span><span id="L-214"><a href="#L-214"><span class="linenos">214</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">SMALLINT</span><span class="p">:</span> <span class="p">{</span> +</span><span id="L-215"><a href="#L-215"><span class="linenos">215</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span><span class="p">,</span> +</span><span id="L-216"><a href="#L-216"><span class="linenos">216</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BIGINT</span><span class="p">,</span> +</span><span id="L-217"><a href="#L-217"><span class="linenos">217</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DECIMAL</span><span class="p">,</span> +</span><span id="L-218"><a href="#L-218"><span class="linenos">218</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">,</span> +</span><span id="L-219"><a href="#L-219"><span class="linenos">219</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">,</span> +</span><span id="L-220"><a href="#L-220"><span class="linenos">220</span></a> <span class="p">},</span> +</span><span id="L-221"><a href="#L-221"><span class="linenos">221</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TINYINT</span><span class="p">:</span> <span class="p">{</span> +</span><span id="L-222"><a href="#L-222"><span class="linenos">222</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">SMALLINT</span><span class="p">,</span> +</span><span id="L-223"><a href="#L-223"><span class="linenos">223</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span><span class="p">,</span> +</span><span id="L-224"><a href="#L-224"><span class="linenos">224</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BIGINT</span><span class="p">,</span> +</span><span id="L-225"><a href="#L-225"><span class="linenos">225</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DECIMAL</span><span class="p">,</span> +</span><span id="L-226"><a href="#L-226"><span class="linenos">226</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">,</span> +</span><span id="L-227"><a href="#L-227"><span class="linenos">227</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">,</span> +</span><span id="L-228"><a href="#L-228"><span class="linenos">228</span></a> <span class="p">},</span> +</span><span id="L-229"><a href="#L-229"><span class="linenos">229</span></a> <span class="c1"># DATE < DATETIME < TIMESTAMP < TIMESTAMPTZ < TIMESTAMPLTZ</span> +</span><span id="L-230"><a href="#L-230"><span class="linenos">230</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPLTZ</span><span class="p">:</span> <span class="nb">set</span><span class="p">(),</span> +</span><span id="L-231"><a href="#L-231"><span class="linenos">231</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPTZ</span><span class="p">:</span> <span class="p">{</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPLTZ</span><span class="p">},</span> +</span><span id="L-232"><a href="#L-232"><span class="linenos">232</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span><span class="p">:</span> <span class="p">{</span> +</span><span id="L-233"><a href="#L-233"><span class="linenos">233</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPTZ</span><span class="p">,</span> +</span><span id="L-234"><a href="#L-234"><span class="linenos">234</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPLTZ</span><span class="p">,</span> +</span><span id="L-235"><a href="#L-235"><span class="linenos">235</span></a> <span class="p">},</span> +</span><span id="L-236"><a href="#L-236"><span class="linenos">236</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</span><span class="p">:</span> <span class="p">{</span> +</span><span id="L-237"><a href="#L-237"><span class="linenos">237</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span><span class="p">,</span> +</span><span id="L-238"><a href="#L-238"><span class="linenos">238</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPTZ</span><span class="p">,</span> +</span><span id="L-239"><a href="#L-239"><span class="linenos">239</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPLTZ</span><span class="p">,</span> +</span><span id="L-240"><a href="#L-240"><span class="linenos">240</span></a> <span class="p">},</span> +</span><span id="L-241"><a href="#L-241"><span class="linenos">241</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">:</span> <span class="p">{</span> +</span><span id="L-242"><a href="#L-242"><span class="linenos">242</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</span><span class="p">,</span> +</span><span id="L-243"><a href="#L-243"><span class="linenos">243</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span><span class="p">,</span> +</span><span id="L-244"><a href="#L-244"><span class="linenos">244</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPTZ</span><span class="p">,</span> +</span><span id="L-245"><a href="#L-245"><span class="linenos">245</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPLTZ</span><span class="p">,</span> +</span><span id="L-246"><a href="#L-246"><span class="linenos">246</span></a> <span class="p">},</span> +</span><span id="L-247"><a href="#L-247"><span class="linenos">247</span></a> <span class="p">}</span> </span><span id="L-248"><a href="#L-248"><span class="linenos">248</span></a> -</span><span id="L-249"><a href="#L-249"><span class="linenos">249</span></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">schema</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">annotators</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">coerces_to</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> -</span><span id="L-250"><a href="#L-250"><span class="linenos">250</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span> -</span><span id="L-251"><a href="#L-251"><span class="linenos">251</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">annotators</span> <span class="o">=</span> <span class="n">annotators</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">ANNOTATORS</span> -</span><span id="L-252"><a href="#L-252"><span class="linenos">252</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">coerces_to</span> <span class="o">=</span> <span class="n">coerces_to</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">COERCES_TO</span> -</span><span id="L-253"><a href="#L-253"><span class="linenos">253</span></a> -</span><span id="L-254"><a href="#L-254"><span class="linenos">254</span></a> <span class="k">def</span> <span class="nf">annotate</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> -</span><span id="L-255"><a href="#L-255"><span class="linenos">255</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">TRAVERSABLES</span><span class="p">):</span> -</span><span id="L-256"><a href="#L-256"><span class="linenos">256</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-257"><a href="#L-257"><span class="linenos">257</span></a> <span class="n">selects</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="L-258"><a href="#L-258"><span class="linenos">258</span></a> <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">items</span><span class="p">():</span> -</span><span id="L-259"><a href="#L-259"><span class="linenos">259</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">):</span> -</span><span id="L-260"><a href="#L-260"><span class="linenos">260</span></a> <span class="k">continue</span> -</span><span id="L-261"><a href="#L-261"><span class="linenos">261</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">):</span> -</span><span id="L-262"><a href="#L-262"><span class="linenos">262</span></a> <span class="n">values</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-263"><a href="#L-263"><span class="linenos">263</span></a> -</span><span id="L-264"><a href="#L-264"><span class="linenos">264</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Lateral</span><span class="p">):</span> -</span><span id="L-265"><a href="#L-265"><span class="linenos">265</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Explode</span><span class="p">):</span> -</span><span id="L-266"><a href="#L-266"><span class="linenos">266</span></a> <span class="n">values</span> <span class="o">=</span> <span class="p">[</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">this</span><span class="p">]</span> -</span><span id="L-267"><a href="#L-267"><span class="linenos">267</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-268"><a href="#L-268"><span class="linenos">268</span></a> <span class="n">values</span> <span class="o">=</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">expressions</span> -</span><span id="L-269"><a href="#L-269"><span class="linenos">269</span></a> -</span><span id="L-270"><a href="#L-270"><span class="linenos">270</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">values</span><span class="p">:</span> -</span><span id="L-271"><a href="#L-271"><span class="linenos">271</span></a> <span class="k">continue</span> -</span><span id="L-272"><a href="#L-272"><span class="linenos">272</span></a> -</span><span id="L-273"><a href="#L-273"><span class="linenos">273</span></a> <span class="n">selects</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="p">{</span> -</span><span id="L-274"><a href="#L-274"><span class="linenos">274</span></a> <span class="n">alias</span><span class="p">:</span> <span class="n">column</span> -</span><span id="L-275"><a href="#L-275"><span class="linenos">275</span></a> <span class="k">for</span> <span class="n">alias</span><span class="p">,</span> <span class="n">column</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span> -</span><span id="L-276"><a href="#L-276"><span class="linenos">276</span></a> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span><span class="p">,</span> -</span><span id="L-277"><a href="#L-277"><span class="linenos">277</span></a> <span class="n">values</span><span class="p">,</span> -</span><span id="L-278"><a href="#L-278"><span class="linenos">278</span></a> <span class="p">)</span> -</span><span id="L-279"><a href="#L-279"><span class="linenos">279</span></a> <span class="p">}</span> -</span><span id="L-280"><a href="#L-280"><span class="linenos">280</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-281"><a href="#L-281"><span class="linenos">281</span></a> <span class="n">selects</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="p">{</span> -</span><span id="L-282"><a href="#L-282"><span class="linenos">282</span></a> <span class="n">select</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">:</span> <span class="n">select</span> <span class="k">for</span> <span class="n">select</span> <span class="ow">in</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span> -</span><span id="L-283"><a href="#L-283"><span class="linenos">283</span></a> <span class="p">}</span> -</span><span id="L-284"><a href="#L-284"><span class="linenos">284</span></a> <span class="c1"># First annotate the current scope's column references</span> -</span><span id="L-285"><a href="#L-285"><span class="linenos">285</span></a> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span> -</span><span id="L-286"><a href="#L-286"><span class="linenos">286</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">:</span> -</span><span id="L-287"><a href="#L-287"><span class="linenos">287</span></a> <span class="k">continue</span> -</span><span id="L-288"><a href="#L-288"><span class="linenos">288</span></a> -</span><span id="L-289"><a href="#L-289"><span class="linenos">289</span></a> <span class="n">source</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">)</span> -</span><span id="L-290"><a href="#L-290"><span class="linenos">290</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> -</span><span id="L-291"><a href="#L-291"><span class="linenos">291</span></a> <span class="n">col</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">get_column_type</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">col</span><span class="p">)</span> -</span><span id="L-292"><a href="#L-292"><span class="linenos">292</span></a> <span class="k">elif</span> <span class="n">source</span> <span class="ow">and</span> <span class="n">col</span><span class="o">.</span><span class="n">table</span> <span class="ow">in</span> <span class="n">selects</span> <span class="ow">and</span> <span class="n">col</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">selects</span><span class="p">[</span><span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">]:</span> -</span><span id="L-293"><a href="#L-293"><span class="linenos">293</span></a> <span class="n">col</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">selects</span><span class="p">[</span><span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">][</span><span class="n">col</span><span class="o">.</span><span class="n">name</span><span class="p">]</span><span class="o">.</span><span class="n">type</span> -</span><span id="L-294"><a href="#L-294"><span class="linenos">294</span></a> <span class="c1"># Then (possibly) annotate the remaining expressions in the scope</span> -</span><span id="L-295"><a href="#L-295"><span class="linenos">295</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_maybe_annotate</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-296"><a href="#L-296"><span class="linenos">296</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_maybe_annotate</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> <span class="c1"># This takes care of non-traversable expressions</span> -</span><span id="L-297"><a href="#L-297"><span class="linenos">297</span></a> -</span><span id="L-298"><a href="#L-298"><span class="linenos">298</span></a> <span class="k">def</span> <span class="nf">_maybe_annotate</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> -</span><span id="L-299"><a href="#L-299"><span class="linenos">299</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">):</span> -</span><span id="L-300"><a href="#L-300"><span class="linenos">300</span></a> <span class="k">return</span> <span class="kc">None</span> -</span><span id="L-301"><a href="#L-301"><span class="linenos">301</span></a> -</span><span id="L-302"><a href="#L-302"><span class="linenos">302</span></a> <span class="k">if</span> <span class="n">expression</span><span class="o">.</span><span class="n">type</span><span class="p">:</span> -</span><span id="L-303"><a href="#L-303"><span class="linenos">303</span></a> <span class="k">return</span> <span class="n">expression</span> <span class="c1"># We've already inferred the expression's type</span> -</span><span id="L-304"><a href="#L-304"><span class="linenos">304</span></a> -</span><span id="L-305"><a href="#L-305"><span class="linenos">305</span></a> <span class="n">annotator</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">annotators</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="vm">__class__</span><span class="p">)</span> -</span><span id="L-306"><a href="#L-306"><span class="linenos">306</span></a> -</span><span id="L-307"><a href="#L-307"><span class="linenos">307</span></a> <span class="k">return</span> <span class="p">(</span> -</span><span id="L-308"><a href="#L-308"><span class="linenos">308</span></a> <span class="n">annotator</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">)</span> -</span><span id="L-309"><a href="#L-309"><span class="linenos">309</span></a> <span class="k">if</span> <span class="n">annotator</span> -</span><span id="L-310"><a href="#L-310"><span class="linenos">310</span></a> <span class="k">else</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">UNKNOWN</span><span class="p">)</span> -</span><span id="L-311"><a href="#L-311"><span class="linenos">311</span></a> <span class="p">)</span> -</span><span id="L-312"><a href="#L-312"><span class="linenos">312</span></a> -</span><span id="L-313"><a href="#L-313"><span class="linenos">313</span></a> <span class="k">def</span> <span class="nf">_annotate_args</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> -</span><span id="L-314"><a href="#L-314"><span class="linenos">314</span></a> <span class="k">for</span> <span class="n">value</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> -</span><span id="L-315"><a href="#L-315"><span class="linenos">315</span></a> <span class="k">for</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">ensure_collection</span><span class="p">(</span><span class="n">value</span><span class="p">):</span> -</span><span id="L-316"><a href="#L-316"><span class="linenos">316</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_maybe_annotate</span><span class="p">(</span><span class="n">v</span><span class="p">)</span> +</span><span id="L-249"><a href="#L-249"><span class="linenos">249</span></a> <span class="n">TRAVERSABLES</span> <span class="o">=</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Union</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">)</span> +</span><span id="L-250"><a href="#L-250"><span class="linenos">250</span></a> +</span><span id="L-251"><a href="#L-251"><span class="linenos">251</span></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">schema</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">annotators</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">coerces_to</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> +</span><span id="L-252"><a href="#L-252"><span class="linenos">252</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span> +</span><span id="L-253"><a href="#L-253"><span class="linenos">253</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">annotators</span> <span class="o">=</span> <span class="n">annotators</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">ANNOTATORS</span> +</span><span id="L-254"><a href="#L-254"><span class="linenos">254</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">coerces_to</span> <span class="o">=</span> <span class="n">coerces_to</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">COERCES_TO</span> +</span><span id="L-255"><a href="#L-255"><span class="linenos">255</span></a> +</span><span id="L-256"><a href="#L-256"><span class="linenos">256</span></a> <span class="k">def</span> <span class="nf">annotate</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> +</span><span id="L-257"><a href="#L-257"><span class="linenos">257</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">TRAVERSABLES</span><span class="p">):</span> +</span><span id="L-258"><a href="#L-258"><span class="linenos">258</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-259"><a href="#L-259"><span class="linenos">259</span></a> <span class="n">selects</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="L-260"><a href="#L-260"><span class="linenos">260</span></a> <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">items</span><span class="p">():</span> +</span><span id="L-261"><a href="#L-261"><span class="linenos">261</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">):</span> +</span><span id="L-262"><a href="#L-262"><span class="linenos">262</span></a> <span class="k">continue</span> +</span><span id="L-263"><a href="#L-263"><span class="linenos">263</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">):</span> +</span><span id="L-264"><a href="#L-264"><span class="linenos">264</span></a> <span class="n">values</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-265"><a href="#L-265"><span class="linenos">265</span></a> +</span><span id="L-266"><a href="#L-266"><span class="linenos">266</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Lateral</span><span class="p">):</span> +</span><span id="L-267"><a href="#L-267"><span class="linenos">267</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Explode</span><span class="p">):</span> +</span><span id="L-268"><a href="#L-268"><span class="linenos">268</span></a> <span class="n">values</span> <span class="o">=</span> <span class="p">[</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">this</span><span class="p">]</span> +</span><span id="L-269"><a href="#L-269"><span class="linenos">269</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-270"><a href="#L-270"><span class="linenos">270</span></a> <span class="n">values</span> <span class="o">=</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">expressions</span> +</span><span id="L-271"><a href="#L-271"><span class="linenos">271</span></a> +</span><span id="L-272"><a href="#L-272"><span class="linenos">272</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">values</span><span class="p">:</span> +</span><span id="L-273"><a href="#L-273"><span class="linenos">273</span></a> <span class="k">continue</span> +</span><span id="L-274"><a href="#L-274"><span class="linenos">274</span></a> +</span><span id="L-275"><a href="#L-275"><span class="linenos">275</span></a> <span class="n">selects</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="p">{</span> +</span><span id="L-276"><a href="#L-276"><span class="linenos">276</span></a> <span class="n">alias</span><span class="p">:</span> <span class="n">column</span> +</span><span id="L-277"><a href="#L-277"><span class="linenos">277</span></a> <span class="k">for</span> <span class="n">alias</span><span class="p">,</span> <span class="n">column</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span> +</span><span id="L-278"><a href="#L-278"><span class="linenos">278</span></a> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span><span class="p">,</span> +</span><span id="L-279"><a href="#L-279"><span class="linenos">279</span></a> <span class="n">values</span><span class="p">,</span> +</span><span id="L-280"><a href="#L-280"><span class="linenos">280</span></a> <span class="p">)</span> +</span><span id="L-281"><a href="#L-281"><span class="linenos">281</span></a> <span class="p">}</span> +</span><span id="L-282"><a href="#L-282"><span class="linenos">282</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-283"><a href="#L-283"><span class="linenos">283</span></a> <span class="n">selects</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="p">{</span> +</span><span id="L-284"><a href="#L-284"><span class="linenos">284</span></a> <span class="n">select</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">:</span> <span class="n">select</span> <span class="k">for</span> <span class="n">select</span> <span class="ow">in</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span> +</span><span id="L-285"><a href="#L-285"><span class="linenos">285</span></a> <span class="p">}</span> +</span><span id="L-286"><a href="#L-286"><span class="linenos">286</span></a> <span class="c1"># First annotate the current scope's column references</span> +</span><span id="L-287"><a href="#L-287"><span class="linenos">287</span></a> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span> +</span><span id="L-288"><a href="#L-288"><span class="linenos">288</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">:</span> +</span><span id="L-289"><a href="#L-289"><span class="linenos">289</span></a> <span class="k">continue</span> +</span><span id="L-290"><a href="#L-290"><span class="linenos">290</span></a> +</span><span id="L-291"><a href="#L-291"><span class="linenos">291</span></a> <span class="n">source</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">)</span> +</span><span id="L-292"><a href="#L-292"><span class="linenos">292</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> +</span><span id="L-293"><a href="#L-293"><span class="linenos">293</span></a> <span class="n">col</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">get_column_type</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">col</span><span class="p">)</span> +</span><span id="L-294"><a href="#L-294"><span class="linenos">294</span></a> <span class="k">elif</span> <span class="n">source</span> <span class="ow">and</span> <span class="n">col</span><span class="o">.</span><span class="n">table</span> <span class="ow">in</span> <span class="n">selects</span> <span class="ow">and</span> <span class="n">col</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">selects</span><span class="p">[</span><span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">]:</span> +</span><span id="L-295"><a href="#L-295"><span class="linenos">295</span></a> <span class="n">col</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">selects</span><span class="p">[</span><span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">][</span><span class="n">col</span><span class="o">.</span><span class="n">name</span><span class="p">]</span><span class="o">.</span><span class="n">type</span> +</span><span id="L-296"><a href="#L-296"><span class="linenos">296</span></a> <span class="c1"># Then (possibly) annotate the remaining expressions in the scope</span> +</span><span id="L-297"><a href="#L-297"><span class="linenos">297</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_maybe_annotate</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">)</span> +</span><span id="L-298"><a href="#L-298"><span class="linenos">298</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_maybe_annotate</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> <span class="c1"># This takes care of non-traversable expressions</span> +</span><span id="L-299"><a href="#L-299"><span class="linenos">299</span></a> +</span><span id="L-300"><a href="#L-300"><span class="linenos">300</span></a> <span class="k">def</span> <span class="nf">_maybe_annotate</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> +</span><span id="L-301"><a href="#L-301"><span class="linenos">301</span></a> <span class="k">if</span> <span class="n">expression</span><span class="o">.</span><span class="n">type</span><span class="p">:</span> +</span><span id="L-302"><a href="#L-302"><span class="linenos">302</span></a> <span class="k">return</span> <span class="n">expression</span> <span class="c1"># We've already inferred the expression's type</span> +</span><span id="L-303"><a href="#L-303"><span class="linenos">303</span></a> +</span><span id="L-304"><a href="#L-304"><span class="linenos">304</span></a> <span class="n">annotator</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">annotators</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="vm">__class__</span><span class="p">)</span> +</span><span id="L-305"><a href="#L-305"><span class="linenos">305</span></a> +</span><span id="L-306"><a href="#L-306"><span class="linenos">306</span></a> <span class="k">return</span> <span class="p">(</span> +</span><span id="L-307"><a href="#L-307"><span class="linenos">307</span></a> <span class="n">annotator</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">)</span> +</span><span id="L-308"><a href="#L-308"><span class="linenos">308</span></a> <span class="k">if</span> <span class="n">annotator</span> +</span><span id="L-309"><a href="#L-309"><span class="linenos">309</span></a> <span class="k">else</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">UNKNOWN</span><span class="p">)</span> +</span><span id="L-310"><a href="#L-310"><span class="linenos">310</span></a> <span class="p">)</span> +</span><span id="L-311"><a href="#L-311"><span class="linenos">311</span></a> +</span><span id="L-312"><a href="#L-312"><span class="linenos">312</span></a> <span class="k">def</span> <span class="nf">_annotate_args</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> +</span><span id="L-313"><a href="#L-313"><span class="linenos">313</span></a> <span class="k">for</span> <span class="n">_</span><span class="p">,</span> <span class="n">value</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">iter_expressions</span><span class="p">():</span> +</span><span id="L-314"><a href="#L-314"><span class="linenos">314</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_maybe_annotate</span><span class="p">(</span><span class="n">value</span><span class="p">)</span> +</span><span id="L-315"><a href="#L-315"><span class="linenos">315</span></a> +</span><span id="L-316"><a href="#L-316"><span class="linenos">316</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="L-317"><a href="#L-317"><span class="linenos">317</span></a> -</span><span id="L-318"><a href="#L-318"><span class="linenos">318</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-319"><a href="#L-319"><span class="linenos">319</span></a> -</span><span id="L-320"><a href="#L-320"><span class="linenos">320</span></a> <span class="k">def</span> <span class="nf">_maybe_coerce</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">type1</span><span class="p">,</span> <span class="n">type2</span><span class="p">):</span> -</span><span id="L-321"><a href="#L-321"><span class="linenos">321</span></a> <span class="c1"># We propagate the NULL / UNKNOWN types upwards if found</span> -</span><span id="L-322"><a href="#L-322"><span class="linenos">322</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">type1</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="p">):</span> -</span><span id="L-323"><a href="#L-323"><span class="linenos">323</span></a> <span class="n">type1</span> <span class="o">=</span> <span class="n">type1</span><span class="o">.</span><span class="n">this</span> -</span><span id="L-324"><a href="#L-324"><span class="linenos">324</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">type2</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="p">):</span> -</span><span id="L-325"><a href="#L-325"><span class="linenos">325</span></a> <span class="n">type2</span> <span class="o">=</span> <span class="n">type2</span><span class="o">.</span><span class="n">this</span> -</span><span id="L-326"><a href="#L-326"><span class="linenos">326</span></a> -</span><span id="L-327"><a href="#L-327"><span class="linenos">327</span></a> <span class="k">if</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NULL</span> <span class="ow">in</span> <span class="p">(</span><span class="n">type1</span><span class="p">,</span> <span class="n">type2</span><span class="p">):</span> -</span><span id="L-328"><a href="#L-328"><span class="linenos">328</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NULL</span> -</span><span id="L-329"><a href="#L-329"><span class="linenos">329</span></a> <span class="k">if</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">UNKNOWN</span> <span class="ow">in</span> <span class="p">(</span><span class="n">type1</span><span class="p">,</span> <span class="n">type2</span><span class="p">):</span> -</span><span id="L-330"><a href="#L-330"><span class="linenos">330</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">UNKNOWN</span> +</span><span id="L-318"><a href="#L-318"><span class="linenos">318</span></a> <span class="k">def</span> <span class="nf">_maybe_coerce</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">type1</span><span class="p">,</span> <span class="n">type2</span><span class="p">):</span> +</span><span id="L-319"><a href="#L-319"><span class="linenos">319</span></a> <span class="c1"># We propagate the NULL / UNKNOWN types upwards if found</span> +</span><span id="L-320"><a href="#L-320"><span class="linenos">320</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">type1</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="p">):</span> +</span><span id="L-321"><a href="#L-321"><span class="linenos">321</span></a> <span class="n">type1</span> <span class="o">=</span> <span class="n">type1</span><span class="o">.</span><span class="n">this</span> +</span><span id="L-322"><a href="#L-322"><span class="linenos">322</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">type2</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="p">):</span> +</span><span id="L-323"><a href="#L-323"><span class="linenos">323</span></a> <span class="n">type2</span> <span class="o">=</span> <span class="n">type2</span><span class="o">.</span><span class="n">this</span> +</span><span id="L-324"><a href="#L-324"><span class="linenos">324</span></a> +</span><span id="L-325"><a href="#L-325"><span class="linenos">325</span></a> <span class="k">if</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NULL</span> <span class="ow">in</span> <span class="p">(</span><span class="n">type1</span><span class="p">,</span> <span class="n">type2</span><span class="p">):</span> +</span><span id="L-326"><a href="#L-326"><span class="linenos">326</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NULL</span> +</span><span id="L-327"><a href="#L-327"><span class="linenos">327</span></a> <span class="k">if</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">UNKNOWN</span> <span class="ow">in</span> <span class="p">(</span><span class="n">type1</span><span class="p">,</span> <span class="n">type2</span><span class="p">):</span> +</span><span id="L-328"><a href="#L-328"><span class="linenos">328</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">UNKNOWN</span> +</span><span id="L-329"><a href="#L-329"><span class="linenos">329</span></a> +</span><span id="L-330"><a href="#L-330"><span class="linenos">330</span></a> <span class="k">return</span> <span class="n">type2</span> <span class="k">if</span> <span class="n">type2</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">coerces_to</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">type1</span><span class="p">,</span> <span class="p">{})</span> <span class="k">else</span> <span class="n">type1</span> </span><span id="L-331"><a href="#L-331"><span class="linenos">331</span></a> -</span><span id="L-332"><a href="#L-332"><span class="linenos">332</span></a> <span class="k">return</span> <span class="n">type2</span> <span class="k">if</span> <span class="n">type2</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">coerces_to</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">type1</span><span class="p">,</span> <span class="p">{})</span> <span class="k">else</span> <span class="n">type1</span> -</span><span id="L-333"><a href="#L-333"><span class="linenos">333</span></a> -</span><span id="L-334"><a href="#L-334"><span class="linenos">334</span></a> <span class="k">def</span> <span class="nf">_annotate_binary</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> -</span><span id="L-335"><a href="#L-335"><span class="linenos">335</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_args</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-336"><a href="#L-336"><span class="linenos">336</span></a> -</span><span id="L-337"><a href="#L-337"><span class="linenos">337</span></a> <span class="n">left_type</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">left</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> -</span><span id="L-338"><a href="#L-338"><span class="linenos">338</span></a> <span class="n">right_type</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">right</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> -</span><span id="L-339"><a href="#L-339"><span class="linenos">339</span></a> -</span><span id="L-340"><a href="#L-340"><span class="linenos">340</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">)):</span> -</span><span id="L-341"><a href="#L-341"><span class="linenos">341</span></a> <span class="k">if</span> <span class="n">left_type</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NULL</span> <span class="ow">and</span> <span class="n">right_type</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NULL</span><span class="p">:</span> -</span><span id="L-342"><a href="#L-342"><span class="linenos">342</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NULL</span> -</span><span id="L-343"><a href="#L-343"><span class="linenos">343</span></a> <span class="k">elif</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NULL</span> <span class="ow">in</span> <span class="p">(</span><span class="n">left_type</span><span class="p">,</span> <span class="n">right_type</span><span class="p">):</span> -</span><span id="L-344"><a href="#L-344"><span class="linenos">344</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">build</span><span class="p">(</span> -</span><span id="L-345"><a href="#L-345"><span class="linenos">345</span></a> <span class="s2">"NULLABLE"</span><span class="p">,</span> <span class="n">expressions</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">build</span><span class="p">(</span><span class="s2">"BOOLEAN"</span><span class="p">)</span> -</span><span id="L-346"><a href="#L-346"><span class="linenos">346</span></a> <span class="p">)</span> -</span><span id="L-347"><a href="#L-347"><span class="linenos">347</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-348"><a href="#L-348"><span class="linenos">348</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BOOLEAN</span> -</span><span id="L-349"><a href="#L-349"><span class="linenos">349</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Predicate</span><span class="p">)):</span> -</span><span id="L-350"><a href="#L-350"><span class="linenos">350</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BOOLEAN</span> -</span><span id="L-351"><a href="#L-351"><span class="linenos">351</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-352"><a href="#L-352"><span class="linenos">352</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_maybe_coerce</span><span class="p">(</span><span class="n">left_type</span><span class="p">,</span> <span class="n">right_type</span><span class="p">)</span> +</span><span id="L-332"><a href="#L-332"><span class="linenos">332</span></a> <span class="k">def</span> <span class="nf">_annotate_binary</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> +</span><span id="L-333"><a href="#L-333"><span class="linenos">333</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_args</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="L-334"><a href="#L-334"><span class="linenos">334</span></a> +</span><span id="L-335"><a href="#L-335"><span class="linenos">335</span></a> <span class="n">left_type</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">left</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> +</span><span id="L-336"><a href="#L-336"><span class="linenos">336</span></a> <span class="n">right_type</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">right</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> +</span><span id="L-337"><a href="#L-337"><span class="linenos">337</span></a> +</span><span id="L-338"><a href="#L-338"><span class="linenos">338</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">)):</span> +</span><span id="L-339"><a href="#L-339"><span class="linenos">339</span></a> <span class="k">if</span> <span class="n">left_type</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NULL</span> <span class="ow">and</span> <span class="n">right_type</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NULL</span><span class="p">:</span> +</span><span id="L-340"><a href="#L-340"><span class="linenos">340</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NULL</span> +</span><span id="L-341"><a href="#L-341"><span class="linenos">341</span></a> <span class="k">elif</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NULL</span> <span class="ow">in</span> <span class="p">(</span><span class="n">left_type</span><span class="p">,</span> <span class="n">right_type</span><span class="p">):</span> +</span><span id="L-342"><a href="#L-342"><span class="linenos">342</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">build</span><span class="p">(</span> +</span><span id="L-343"><a href="#L-343"><span class="linenos">343</span></a> <span class="s2">"NULLABLE"</span><span class="p">,</span> <span class="n">expressions</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">build</span><span class="p">(</span><span class="s2">"BOOLEAN"</span><span class="p">)</span> +</span><span id="L-344"><a href="#L-344"><span class="linenos">344</span></a> <span class="p">)</span> +</span><span id="L-345"><a href="#L-345"><span class="linenos">345</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-346"><a href="#L-346"><span class="linenos">346</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BOOLEAN</span> +</span><span id="L-347"><a href="#L-347"><span class="linenos">347</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Predicate</span><span class="p">)):</span> +</span><span id="L-348"><a href="#L-348"><span class="linenos">348</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BOOLEAN</span> +</span><span id="L-349"><a href="#L-349"><span class="linenos">349</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-350"><a href="#L-350"><span class="linenos">350</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_maybe_coerce</span><span class="p">(</span><span class="n">left_type</span><span class="p">,</span> <span class="n">right_type</span><span class="p">)</span> +</span><span id="L-351"><a href="#L-351"><span class="linenos">351</span></a> +</span><span id="L-352"><a href="#L-352"><span class="linenos">352</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="L-353"><a href="#L-353"><span class="linenos">353</span></a> -</span><span id="L-354"><a href="#L-354"><span class="linenos">354</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-355"><a href="#L-355"><span class="linenos">355</span></a> -</span><span id="L-356"><a href="#L-356"><span class="linenos">356</span></a> <span class="k">def</span> <span class="nf">_annotate_unary</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> -</span><span id="L-357"><a href="#L-357"><span class="linenos">357</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_args</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-358"><a href="#L-358"><span class="linenos">358</span></a> -</span><span id="L-359"><a href="#L-359"><span class="linenos">359</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Condition</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Paren</span><span class="p">):</span> -</span><span id="L-360"><a href="#L-360"><span class="linenos">360</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BOOLEAN</span> -</span><span id="L-361"><a href="#L-361"><span class="linenos">361</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-362"><a href="#L-362"><span class="linenos">362</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">type</span> +</span><span id="L-354"><a href="#L-354"><span class="linenos">354</span></a> <span class="k">def</span> <span class="nf">_annotate_unary</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> +</span><span id="L-355"><a href="#L-355"><span class="linenos">355</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_args</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="L-356"><a href="#L-356"><span class="linenos">356</span></a> +</span><span id="L-357"><a href="#L-357"><span class="linenos">357</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Condition</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Paren</span><span class="p">):</span> +</span><span id="L-358"><a href="#L-358"><span class="linenos">358</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BOOLEAN</span> +</span><span id="L-359"><a href="#L-359"><span class="linenos">359</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-360"><a href="#L-360"><span class="linenos">360</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">type</span> +</span><span id="L-361"><a href="#L-361"><span class="linenos">361</span></a> +</span><span id="L-362"><a href="#L-362"><span class="linenos">362</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="L-363"><a href="#L-363"><span class="linenos">363</span></a> -</span><span id="L-364"><a href="#L-364"><span class="linenos">364</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-365"><a href="#L-365"><span class="linenos">365</span></a> -</span><span id="L-366"><a href="#L-366"><span class="linenos">366</span></a> <span class="k">def</span> <span class="nf">_annotate_literal</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> -</span><span id="L-367"><a href="#L-367"><span class="linenos">367</span></a> <span class="k">if</span> <span class="n">expression</span><span class="o">.</span><span class="n">is_string</span><span class="p">:</span> -</span><span id="L-368"><a href="#L-368"><span class="linenos">368</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span> -</span><span id="L-369"><a href="#L-369"><span class="linenos">369</span></a> <span class="k">elif</span> <span class="n">expression</span><span class="o">.</span><span class="n">is_int</span><span class="p">:</span> -</span><span id="L-370"><a href="#L-370"><span class="linenos">370</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span> -</span><span id="L-371"><a href="#L-371"><span class="linenos">371</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-372"><a href="#L-372"><span class="linenos">372</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span> +</span><span id="L-364"><a href="#L-364"><span class="linenos">364</span></a> <span class="k">def</span> <span class="nf">_annotate_literal</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> +</span><span id="L-365"><a href="#L-365"><span class="linenos">365</span></a> <span class="k">if</span> <span class="n">expression</span><span class="o">.</span><span class="n">is_string</span><span class="p">:</span> +</span><span id="L-366"><a href="#L-366"><span class="linenos">366</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span> +</span><span id="L-367"><a href="#L-367"><span class="linenos">367</span></a> <span class="k">elif</span> <span class="n">expression</span><span class="o">.</span><span class="n">is_int</span><span class="p">:</span> +</span><span id="L-368"><a href="#L-368"><span class="linenos">368</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span> +</span><span id="L-369"><a href="#L-369"><span class="linenos">369</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-370"><a href="#L-370"><span class="linenos">370</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span> +</span><span id="L-371"><a href="#L-371"><span class="linenos">371</span></a> +</span><span id="L-372"><a href="#L-372"><span class="linenos">372</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="L-373"><a href="#L-373"><span class="linenos">373</span></a> -</span><span id="L-374"><a href="#L-374"><span class="linenos">374</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-375"><a href="#L-375"><span class="linenos">375</span></a> -</span><span id="L-376"><a href="#L-376"><span class="linenos">376</span></a> <span class="k">def</span> <span class="nf">_annotate_with_type</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">,</span> <span class="n">target_type</span><span class="p">):</span> -</span><span id="L-377"><a href="#L-377"><span class="linenos">377</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">target_type</span> -</span><span id="L-378"><a href="#L-378"><span class="linenos">378</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_args</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-379"><a href="#L-379"><span class="linenos">379</span></a> -</span><span id="L-380"><a href="#L-380"><span class="linenos">380</span></a> <span class="k">def</span> <span class="nf">_annotate_by_args</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="n">promote</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> -</span><span id="L-381"><a href="#L-381"><span class="linenos">381</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_args</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-382"><a href="#L-382"><span class="linenos">382</span></a> <span class="n">expressions</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-383"><a href="#L-383"><span class="linenos">383</span></a> <span class="k">for</span> <span class="n">arg</span> <span class="ow">in</span> <span class="n">args</span><span class="p">:</span> -</span><span id="L-384"><a href="#L-384"><span class="linenos">384</span></a> <span class="n">arg_expr</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">arg</span><span class="p">)</span> -</span><span id="L-385"><a href="#L-385"><span class="linenos">385</span></a> <span class="n">expressions</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">expr</span> <span class="k">for</span> <span class="n">expr</span> <span class="ow">in</span> <span class="n">ensure_list</span><span class="p">(</span><span class="n">arg_expr</span><span class="p">)</span> <span class="k">if</span> <span class="n">expr</span><span class="p">)</span> -</span><span id="L-386"><a href="#L-386"><span class="linenos">386</span></a> -</span><span id="L-387"><a href="#L-387"><span class="linenos">387</span></a> <span class="n">last_datatype</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-388"><a href="#L-388"><span class="linenos">388</span></a> <span class="k">for</span> <span class="n">expr</span> <span class="ow">in</span> <span class="n">expressions</span><span class="p">:</span> -</span><span id="L-389"><a href="#L-389"><span class="linenos">389</span></a> <span class="n">last_datatype</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_maybe_coerce</span><span class="p">(</span><span class="n">last_datatype</span> <span class="ow">or</span> <span class="n">expr</span><span class="o">.</span><span class="n">type</span><span class="p">,</span> <span class="n">expr</span><span class="o">.</span><span class="n">type</span><span class="p">)</span> +</span><span id="L-374"><a href="#L-374"><span class="linenos">374</span></a> <span class="k">def</span> <span class="nf">_annotate_with_type</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">,</span> <span class="n">target_type</span><span class="p">):</span> +</span><span id="L-375"><a href="#L-375"><span class="linenos">375</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">target_type</span> +</span><span id="L-376"><a href="#L-376"><span class="linenos">376</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_args</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="L-377"><a href="#L-377"><span class="linenos">377</span></a> +</span><span id="L-378"><a href="#L-378"><span class="linenos">378</span></a> <span class="k">def</span> <span class="nf">_annotate_by_args</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="n">promote</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> +</span><span id="L-379"><a href="#L-379"><span class="linenos">379</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_args</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="L-380"><a href="#L-380"><span class="linenos">380</span></a> <span class="n">expressions</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-381"><a href="#L-381"><span class="linenos">381</span></a> <span class="k">for</span> <span class="n">arg</span> <span class="ow">in</span> <span class="n">args</span><span class="p">:</span> +</span><span id="L-382"><a href="#L-382"><span class="linenos">382</span></a> <span class="n">arg_expr</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">arg</span><span class="p">)</span> +</span><span id="L-383"><a href="#L-383"><span class="linenos">383</span></a> <span class="n">expressions</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">expr</span> <span class="k">for</span> <span class="n">expr</span> <span class="ow">in</span> <span class="n">ensure_list</span><span class="p">(</span><span class="n">arg_expr</span><span class="p">)</span> <span class="k">if</span> <span class="n">expr</span><span class="p">)</span> +</span><span id="L-384"><a href="#L-384"><span class="linenos">384</span></a> +</span><span id="L-385"><a href="#L-385"><span class="linenos">385</span></a> <span class="n">last_datatype</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-386"><a href="#L-386"><span class="linenos">386</span></a> <span class="k">for</span> <span class="n">expr</span> <span class="ow">in</span> <span class="n">expressions</span><span class="p">:</span> +</span><span id="L-387"><a href="#L-387"><span class="linenos">387</span></a> <span class="n">last_datatype</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_maybe_coerce</span><span class="p">(</span><span class="n">last_datatype</span> <span class="ow">or</span> <span class="n">expr</span><span class="o">.</span><span class="n">type</span><span class="p">,</span> <span class="n">expr</span><span class="o">.</span><span class="n">type</span><span class="p">)</span> +</span><span id="L-388"><a href="#L-388"><span class="linenos">388</span></a> +</span><span id="L-389"><a href="#L-389"><span class="linenos">389</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">last_datatype</span> <span class="ow">or</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">UNKNOWN</span> </span><span id="L-390"><a href="#L-390"><span class="linenos">390</span></a> -</span><span id="L-391"><a href="#L-391"><span class="linenos">391</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">last_datatype</span> <span class="ow">or</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">UNKNOWN</span> -</span><span id="L-392"><a href="#L-392"><span class="linenos">392</span></a> -</span><span id="L-393"><a href="#L-393"><span class="linenos">393</span></a> <span class="k">if</span> <span class="n">promote</span><span class="p">:</span> -</span><span id="L-394"><a href="#L-394"><span class="linenos">394</span></a> <span class="k">if</span> <span class="n">expression</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> <span class="ow">in</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">INTEGER_TYPES</span><span class="p">:</span> -</span><span id="L-395"><a href="#L-395"><span class="linenos">395</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BIGINT</span> -</span><span id="L-396"><a href="#L-396"><span class="linenos">396</span></a> <span class="k">elif</span> <span class="n">expression</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> <span class="ow">in</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">FLOAT_TYPES</span><span class="p">:</span> -</span><span id="L-397"><a href="#L-397"><span class="linenos">397</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span> -</span><span id="L-398"><a href="#L-398"><span class="linenos">398</span></a> -</span><span id="L-399"><a href="#L-399"><span class="linenos">399</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-391"><a href="#L-391"><span class="linenos">391</span></a> <span class="k">if</span> <span class="n">promote</span><span class="p">:</span> +</span><span id="L-392"><a href="#L-392"><span class="linenos">392</span></a> <span class="k">if</span> <span class="n">expression</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> <span class="ow">in</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">INTEGER_TYPES</span><span class="p">:</span> +</span><span id="L-393"><a href="#L-393"><span class="linenos">393</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BIGINT</span> +</span><span id="L-394"><a href="#L-394"><span class="linenos">394</span></a> <span class="k">elif</span> <span class="n">expression</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> <span class="ow">in</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">FLOAT_TYPES</span><span class="p">:</span> +</span><span id="L-395"><a href="#L-395"><span class="linenos">395</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span> +</span><span id="L-396"><a href="#L-396"><span class="linenos">396</span></a> +</span><span id="L-397"><a href="#L-397"><span class="linenos">397</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -633,295 +631,293 @@ Assumes that we've already executed the optimizer's qualify_columns step.</p> </span><span id="TypeAnnotator-109"><a href="#TypeAnnotator-109"><span class="linenos">109</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">If</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_by_args</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="s2">"true"</span><span class="p">,</span> <span class="s2">"false"</span><span class="p">),</span> </span><span id="TypeAnnotator-110"><a href="#TypeAnnotator-110"><span class="linenos">110</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Coalesce</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_by_args</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="s2">"this"</span><span class="p">,</span> <span class="s2">"expressions"</span><span class="p">),</span> </span><span id="TypeAnnotator-111"><a href="#TypeAnnotator-111"><span class="linenos">111</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">IfNull</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_by_args</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="s2">"this"</span><span class="p">,</span> <span class="s2">"expression"</span><span class="p">),</span> -</span><span id="TypeAnnotator-112"><a href="#TypeAnnotator-112"><span class="linenos">112</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">ConcatWs</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> -</span><span id="TypeAnnotator-113"><a href="#TypeAnnotator-113"><span class="linenos">113</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GroupConcat</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> -</span><span id="TypeAnnotator-114"><a href="#TypeAnnotator-114"><span class="linenos">114</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span> -</span><span id="TypeAnnotator-115"><a href="#TypeAnnotator-115"><span class="linenos">115</span></a> <span class="p">),</span> -</span><span id="TypeAnnotator-116"><a href="#TypeAnnotator-116"><span class="linenos">116</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">ArrayConcat</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> -</span><span id="TypeAnnotator-117"><a href="#TypeAnnotator-117"><span class="linenos">117</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span> -</span><span id="TypeAnnotator-118"><a href="#TypeAnnotator-118"><span class="linenos">118</span></a> <span class="p">),</span> -</span><span id="TypeAnnotator-119"><a href="#TypeAnnotator-119"><span class="linenos">119</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Initcap</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> -</span><span id="TypeAnnotator-120"><a href="#TypeAnnotator-120"><span class="linenos">120</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Least</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_by_args</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="s2">"expressions"</span><span class="p">),</span> -</span><span id="TypeAnnotator-121"><a href="#TypeAnnotator-121"><span class="linenos">121</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Length</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BIGINT</span><span class="p">),</span> -</span><span id="TypeAnnotator-122"><a href="#TypeAnnotator-122"><span class="linenos">122</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Levenshtein</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span><span class="p">),</span> -</span><span id="TypeAnnotator-123"><a href="#TypeAnnotator-123"><span class="linenos">123</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Ln</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="TypeAnnotator-124"><a href="#TypeAnnotator-124"><span class="linenos">124</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Log</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="TypeAnnotator-125"><a href="#TypeAnnotator-125"><span class="linenos">125</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Log2</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="TypeAnnotator-126"><a href="#TypeAnnotator-126"><span class="linenos">126</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Log10</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="TypeAnnotator-127"><a href="#TypeAnnotator-127"><span class="linenos">127</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Lower</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> -</span><span id="TypeAnnotator-128"><a href="#TypeAnnotator-128"><span class="linenos">128</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Month</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TINYINT</span><span class="p">),</span> -</span><span id="TypeAnnotator-129"><a href="#TypeAnnotator-129"><span class="linenos">129</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Pow</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="TypeAnnotator-130"><a href="#TypeAnnotator-130"><span class="linenos">130</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Quantile</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="TypeAnnotator-131"><a href="#TypeAnnotator-131"><span class="linenos">131</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">ApproxQuantile</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> -</span><span id="TypeAnnotator-132"><a href="#TypeAnnotator-132"><span class="linenos">132</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span> -</span><span id="TypeAnnotator-133"><a href="#TypeAnnotator-133"><span class="linenos">133</span></a> <span class="p">),</span> -</span><span id="TypeAnnotator-134"><a href="#TypeAnnotator-134"><span class="linenos">134</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">RegexpLike</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> -</span><span id="TypeAnnotator-135"><a href="#TypeAnnotator-135"><span class="linenos">135</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BOOLEAN</span> -</span><span id="TypeAnnotator-136"><a href="#TypeAnnotator-136"><span class="linenos">136</span></a> <span class="p">),</span> -</span><span id="TypeAnnotator-137"><a href="#TypeAnnotator-137"><span class="linenos">137</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Round</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="TypeAnnotator-138"><a href="#TypeAnnotator-138"><span class="linenos">138</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">SafeDivide</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="TypeAnnotator-139"><a href="#TypeAnnotator-139"><span class="linenos">139</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Substring</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> -</span><span id="TypeAnnotator-140"><a href="#TypeAnnotator-140"><span class="linenos">140</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">StrPosition</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span><span class="p">),</span> -</span><span id="TypeAnnotator-141"><a href="#TypeAnnotator-141"><span class="linenos">141</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">StrToDate</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">),</span> -</span><span id="TypeAnnotator-142"><a href="#TypeAnnotator-142"><span class="linenos">142</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">StrToTime</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> -</span><span id="TypeAnnotator-143"><a href="#TypeAnnotator-143"><span class="linenos">143</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span> -</span><span id="TypeAnnotator-144"><a href="#TypeAnnotator-144"><span class="linenos">144</span></a> <span class="p">),</span> -</span><span id="TypeAnnotator-145"><a href="#TypeAnnotator-145"><span class="linenos">145</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Sqrt</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="TypeAnnotator-146"><a href="#TypeAnnotator-146"><span class="linenos">146</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Stddev</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="TypeAnnotator-147"><a href="#TypeAnnotator-147"><span class="linenos">147</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">StddevPop</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="TypeAnnotator-148"><a href="#TypeAnnotator-148"><span class="linenos">148</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">StddevSamp</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="TypeAnnotator-149"><a href="#TypeAnnotator-149"><span class="linenos">149</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TimeToStr</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> -</span><span id="TypeAnnotator-150"><a href="#TypeAnnotator-150"><span class="linenos">150</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TimeToTimeStr</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> -</span><span id="TypeAnnotator-151"><a href="#TypeAnnotator-151"><span class="linenos">151</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span> -</span><span id="TypeAnnotator-152"><a href="#TypeAnnotator-152"><span class="linenos">152</span></a> <span class="p">),</span> -</span><span id="TypeAnnotator-153"><a href="#TypeAnnotator-153"><span class="linenos">153</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TimeStrToDate</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> -</span><span id="TypeAnnotator-154"><a href="#TypeAnnotator-154"><span class="linenos">154</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span> -</span><span id="TypeAnnotator-155"><a href="#TypeAnnotator-155"><span class="linenos">155</span></a> <span class="p">),</span> -</span><span id="TypeAnnotator-156"><a href="#TypeAnnotator-156"><span class="linenos">156</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TimeStrToTime</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> -</span><span id="TypeAnnotator-157"><a href="#TypeAnnotator-157"><span class="linenos">157</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span> -</span><span id="TypeAnnotator-158"><a href="#TypeAnnotator-158"><span class="linenos">158</span></a> <span class="p">),</span> -</span><span id="TypeAnnotator-159"><a href="#TypeAnnotator-159"><span class="linenos">159</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Trim</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> -</span><span id="TypeAnnotator-160"><a href="#TypeAnnotator-160"><span class="linenos">160</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TsOrDsToDateStr</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> -</span><span id="TypeAnnotator-161"><a href="#TypeAnnotator-161"><span class="linenos">161</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span> -</span><span id="TypeAnnotator-162"><a href="#TypeAnnotator-162"><span class="linenos">162</span></a> <span class="p">),</span> -</span><span id="TypeAnnotator-163"><a href="#TypeAnnotator-163"><span class="linenos">163</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TsOrDsToDate</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">),</span> -</span><span id="TypeAnnotator-164"><a href="#TypeAnnotator-164"><span class="linenos">164</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TsOrDiToDi</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span><span class="p">),</span> -</span><span id="TypeAnnotator-165"><a href="#TypeAnnotator-165"><span class="linenos">165</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">UnixToStr</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> -</span><span id="TypeAnnotator-166"><a href="#TypeAnnotator-166"><span class="linenos">166</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">UnixToTime</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> -</span><span id="TypeAnnotator-167"><a href="#TypeAnnotator-167"><span class="linenos">167</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span> -</span><span id="TypeAnnotator-168"><a href="#TypeAnnotator-168"><span class="linenos">168</span></a> <span class="p">),</span> -</span><span id="TypeAnnotator-169"><a href="#TypeAnnotator-169"><span class="linenos">169</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">UnixToTimeStr</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> -</span><span id="TypeAnnotator-170"><a href="#TypeAnnotator-170"><span class="linenos">170</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span> -</span><span id="TypeAnnotator-171"><a href="#TypeAnnotator-171"><span class="linenos">171</span></a> <span class="p">),</span> -</span><span id="TypeAnnotator-172"><a href="#TypeAnnotator-172"><span class="linenos">172</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Upper</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> -</span><span id="TypeAnnotator-173"><a href="#TypeAnnotator-173"><span class="linenos">173</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Variance</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> -</span><span id="TypeAnnotator-174"><a href="#TypeAnnotator-174"><span class="linenos">174</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">VariancePop</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> -</span><span id="TypeAnnotator-175"><a href="#TypeAnnotator-175"><span class="linenos">175</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span> -</span><span id="TypeAnnotator-176"><a href="#TypeAnnotator-176"><span class="linenos">176</span></a> <span class="p">),</span> -</span><span id="TypeAnnotator-177"><a href="#TypeAnnotator-177"><span class="linenos">177</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Week</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TINYINT</span><span class="p">),</span> -</span><span id="TypeAnnotator-178"><a href="#TypeAnnotator-178"><span class="linenos">178</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Year</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TINYINT</span><span class="p">),</span> -</span><span id="TypeAnnotator-179"><a href="#TypeAnnotator-179"><span class="linenos">179</span></a> <span class="p">}</span> -</span><span id="TypeAnnotator-180"><a href="#TypeAnnotator-180"><span class="linenos">180</span></a> -</span><span id="TypeAnnotator-181"><a href="#TypeAnnotator-181"><span class="linenos">181</span></a> <span class="c1"># Reference: https://spark.apache.org/docs/3.2.0/sql-ref-ansi-compliance.html</span> -</span><span id="TypeAnnotator-182"><a href="#TypeAnnotator-182"><span class="linenos">182</span></a> <span class="n">COERCES_TO</span> <span class="o">=</span> <span class="p">{</span> -</span><span id="TypeAnnotator-183"><a href="#TypeAnnotator-183"><span class="linenos">183</span></a> <span class="c1"># CHAR < NCHAR < VARCHAR < NVARCHAR < TEXT</span> -</span><span id="TypeAnnotator-184"><a href="#TypeAnnotator-184"><span class="linenos">184</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TEXT</span><span class="p">:</span> <span class="nb">set</span><span class="p">(),</span> -</span><span id="TypeAnnotator-185"><a href="#TypeAnnotator-185"><span class="linenos">185</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NVARCHAR</span><span class="p">:</span> <span class="p">{</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TEXT</span><span class="p">},</span> -</span><span id="TypeAnnotator-186"><a href="#TypeAnnotator-186"><span class="linenos">186</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">:</span> <span class="p">{</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NVARCHAR</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TEXT</span><span class="p">},</span> -</span><span id="TypeAnnotator-187"><a href="#TypeAnnotator-187"><span class="linenos">187</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NCHAR</span><span class="p">:</span> <span class="p">{</span> -</span><span id="TypeAnnotator-188"><a href="#TypeAnnotator-188"><span class="linenos">188</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">,</span> -</span><span id="TypeAnnotator-189"><a href="#TypeAnnotator-189"><span class="linenos">189</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NVARCHAR</span><span class="p">,</span> -</span><span id="TypeAnnotator-190"><a href="#TypeAnnotator-190"><span class="linenos">190</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TEXT</span><span class="p">,</span> -</span><span id="TypeAnnotator-191"><a href="#TypeAnnotator-191"><span class="linenos">191</span></a> <span class="p">},</span> -</span><span id="TypeAnnotator-192"><a href="#TypeAnnotator-192"><span class="linenos">192</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">CHAR</span><span class="p">:</span> <span class="p">{</span> -</span><span id="TypeAnnotator-193"><a href="#TypeAnnotator-193"><span class="linenos">193</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NCHAR</span><span class="p">,</span> -</span><span id="TypeAnnotator-194"><a href="#TypeAnnotator-194"><span class="linenos">194</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">,</span> -</span><span id="TypeAnnotator-195"><a href="#TypeAnnotator-195"><span class="linenos">195</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NVARCHAR</span><span class="p">,</span> -</span><span id="TypeAnnotator-196"><a href="#TypeAnnotator-196"><span class="linenos">196</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TEXT</span><span class="p">,</span> -</span><span id="TypeAnnotator-197"><a href="#TypeAnnotator-197"><span class="linenos">197</span></a> <span class="p">},</span> -</span><span id="TypeAnnotator-198"><a href="#TypeAnnotator-198"><span class="linenos">198</span></a> <span class="c1"># TINYINT < SMALLINT < INT < BIGINT < DECIMAL < FLOAT < DOUBLE</span> -</span><span id="TypeAnnotator-199"><a href="#TypeAnnotator-199"><span class="linenos">199</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">:</span> <span class="nb">set</span><span class="p">(),</span> -</span><span id="TypeAnnotator-200"><a href="#TypeAnnotator-200"><span class="linenos">200</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">:</span> <span class="p">{</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">},</span> -</span><span id="TypeAnnotator-201"><a href="#TypeAnnotator-201"><span class="linenos">201</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DECIMAL</span><span class="p">:</span> <span class="p">{</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">},</span> -</span><span id="TypeAnnotator-202"><a href="#TypeAnnotator-202"><span class="linenos">202</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BIGINT</span><span class="p">:</span> <span class="p">{</span> -</span><span id="TypeAnnotator-203"><a href="#TypeAnnotator-203"><span class="linenos">203</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DECIMAL</span><span class="p">,</span> -</span><span id="TypeAnnotator-204"><a href="#TypeAnnotator-204"><span class="linenos">204</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">,</span> -</span><span id="TypeAnnotator-205"><a href="#TypeAnnotator-205"><span class="linenos">205</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">,</span> -</span><span id="TypeAnnotator-206"><a href="#TypeAnnotator-206"><span class="linenos">206</span></a> <span class="p">},</span> -</span><span id="TypeAnnotator-207"><a href="#TypeAnnotator-207"><span class="linenos">207</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span><span class="p">:</span> <span class="p">{</span> -</span><span id="TypeAnnotator-208"><a href="#TypeAnnotator-208"><span class="linenos">208</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BIGINT</span><span class="p">,</span> -</span><span id="TypeAnnotator-209"><a href="#TypeAnnotator-209"><span class="linenos">209</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DECIMAL</span><span class="p">,</span> -</span><span id="TypeAnnotator-210"><a href="#TypeAnnotator-210"><span class="linenos">210</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">,</span> -</span><span id="TypeAnnotator-211"><a href="#TypeAnnotator-211"><span class="linenos">211</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">,</span> -</span><span id="TypeAnnotator-212"><a href="#TypeAnnotator-212"><span class="linenos">212</span></a> <span class="p">},</span> -</span><span id="TypeAnnotator-213"><a href="#TypeAnnotator-213"><span class="linenos">213</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">SMALLINT</span><span class="p">:</span> <span class="p">{</span> -</span><span id="TypeAnnotator-214"><a href="#TypeAnnotator-214"><span class="linenos">214</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span><span class="p">,</span> -</span><span id="TypeAnnotator-215"><a href="#TypeAnnotator-215"><span class="linenos">215</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BIGINT</span><span class="p">,</span> -</span><span id="TypeAnnotator-216"><a href="#TypeAnnotator-216"><span class="linenos">216</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DECIMAL</span><span class="p">,</span> -</span><span id="TypeAnnotator-217"><a href="#TypeAnnotator-217"><span class="linenos">217</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">,</span> -</span><span id="TypeAnnotator-218"><a href="#TypeAnnotator-218"><span class="linenos">218</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">,</span> -</span><span id="TypeAnnotator-219"><a href="#TypeAnnotator-219"><span class="linenos">219</span></a> <span class="p">},</span> -</span><span id="TypeAnnotator-220"><a href="#TypeAnnotator-220"><span class="linenos">220</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TINYINT</span><span class="p">:</span> <span class="p">{</span> -</span><span id="TypeAnnotator-221"><a href="#TypeAnnotator-221"><span class="linenos">221</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">SMALLINT</span><span class="p">,</span> -</span><span id="TypeAnnotator-222"><a href="#TypeAnnotator-222"><span class="linenos">222</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span><span class="p">,</span> -</span><span id="TypeAnnotator-223"><a href="#TypeAnnotator-223"><span class="linenos">223</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BIGINT</span><span class="p">,</span> -</span><span id="TypeAnnotator-224"><a href="#TypeAnnotator-224"><span class="linenos">224</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DECIMAL</span><span class="p">,</span> -</span><span id="TypeAnnotator-225"><a href="#TypeAnnotator-225"><span class="linenos">225</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">,</span> -</span><span id="TypeAnnotator-226"><a href="#TypeAnnotator-226"><span class="linenos">226</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">,</span> -</span><span id="TypeAnnotator-227"><a href="#TypeAnnotator-227"><span class="linenos">227</span></a> <span class="p">},</span> -</span><span id="TypeAnnotator-228"><a href="#TypeAnnotator-228"><span class="linenos">228</span></a> <span class="c1"># DATE < DATETIME < TIMESTAMP < TIMESTAMPTZ < TIMESTAMPLTZ</span> -</span><span id="TypeAnnotator-229"><a href="#TypeAnnotator-229"><span class="linenos">229</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPLTZ</span><span class="p">:</span> <span class="nb">set</span><span class="p">(),</span> -</span><span id="TypeAnnotator-230"><a href="#TypeAnnotator-230"><span class="linenos">230</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPTZ</span><span class="p">:</span> <span class="p">{</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPLTZ</span><span class="p">},</span> -</span><span id="TypeAnnotator-231"><a href="#TypeAnnotator-231"><span class="linenos">231</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span><span class="p">:</span> <span class="p">{</span> -</span><span id="TypeAnnotator-232"><a href="#TypeAnnotator-232"><span class="linenos">232</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPTZ</span><span class="p">,</span> -</span><span id="TypeAnnotator-233"><a href="#TypeAnnotator-233"><span class="linenos">233</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPLTZ</span><span class="p">,</span> -</span><span id="TypeAnnotator-234"><a href="#TypeAnnotator-234"><span class="linenos">234</span></a> <span class="p">},</span> -</span><span id="TypeAnnotator-235"><a href="#TypeAnnotator-235"><span class="linenos">235</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</span><span class="p">:</span> <span class="p">{</span> -</span><span id="TypeAnnotator-236"><a href="#TypeAnnotator-236"><span class="linenos">236</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span><span class="p">,</span> -</span><span id="TypeAnnotator-237"><a href="#TypeAnnotator-237"><span class="linenos">237</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPTZ</span><span class="p">,</span> -</span><span id="TypeAnnotator-238"><a href="#TypeAnnotator-238"><span class="linenos">238</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPLTZ</span><span class="p">,</span> -</span><span id="TypeAnnotator-239"><a href="#TypeAnnotator-239"><span class="linenos">239</span></a> <span class="p">},</span> -</span><span id="TypeAnnotator-240"><a href="#TypeAnnotator-240"><span class="linenos">240</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">:</span> <span class="p">{</span> -</span><span id="TypeAnnotator-241"><a href="#TypeAnnotator-241"><span class="linenos">241</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</span><span class="p">,</span> -</span><span id="TypeAnnotator-242"><a href="#TypeAnnotator-242"><span class="linenos">242</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span><span class="p">,</span> -</span><span id="TypeAnnotator-243"><a href="#TypeAnnotator-243"><span class="linenos">243</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPTZ</span><span class="p">,</span> -</span><span id="TypeAnnotator-244"><a href="#TypeAnnotator-244"><span class="linenos">244</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPLTZ</span><span class="p">,</span> -</span><span id="TypeAnnotator-245"><a href="#TypeAnnotator-245"><span class="linenos">245</span></a> <span class="p">},</span> -</span><span id="TypeAnnotator-246"><a href="#TypeAnnotator-246"><span class="linenos">246</span></a> <span class="p">}</span> -</span><span id="TypeAnnotator-247"><a href="#TypeAnnotator-247"><span class="linenos">247</span></a> -</span><span id="TypeAnnotator-248"><a href="#TypeAnnotator-248"><span class="linenos">248</span></a> <span class="n">TRAVERSABLES</span> <span class="o">=</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Union</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">)</span> +</span><span id="TypeAnnotator-112"><a href="#TypeAnnotator-112"><span class="linenos">112</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Concat</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> +</span><span id="TypeAnnotator-113"><a href="#TypeAnnotator-113"><span class="linenos">113</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">ConcatWs</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> +</span><span id="TypeAnnotator-114"><a href="#TypeAnnotator-114"><span class="linenos">114</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GroupConcat</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> +</span><span id="TypeAnnotator-115"><a href="#TypeAnnotator-115"><span class="linenos">115</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span> +</span><span id="TypeAnnotator-116"><a href="#TypeAnnotator-116"><span class="linenos">116</span></a> <span class="p">),</span> +</span><span id="TypeAnnotator-117"><a href="#TypeAnnotator-117"><span class="linenos">117</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">ArrayConcat</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> +</span><span id="TypeAnnotator-118"><a href="#TypeAnnotator-118"><span class="linenos">118</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span> +</span><span id="TypeAnnotator-119"><a href="#TypeAnnotator-119"><span class="linenos">119</span></a> <span class="p">),</span> +</span><span id="TypeAnnotator-120"><a href="#TypeAnnotator-120"><span class="linenos">120</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Initcap</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> +</span><span id="TypeAnnotator-121"><a href="#TypeAnnotator-121"><span class="linenos">121</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Interval</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INTERVAL</span><span class="p">),</span> +</span><span id="TypeAnnotator-122"><a href="#TypeAnnotator-122"><span class="linenos">122</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Least</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_by_args</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="s2">"expressions"</span><span class="p">),</span> +</span><span id="TypeAnnotator-123"><a href="#TypeAnnotator-123"><span class="linenos">123</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Length</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BIGINT</span><span class="p">),</span> +</span><span id="TypeAnnotator-124"><a href="#TypeAnnotator-124"><span class="linenos">124</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Levenshtein</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span><span class="p">),</span> +</span><span id="TypeAnnotator-125"><a href="#TypeAnnotator-125"><span class="linenos">125</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Ln</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="TypeAnnotator-126"><a href="#TypeAnnotator-126"><span class="linenos">126</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Log</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="TypeAnnotator-127"><a href="#TypeAnnotator-127"><span class="linenos">127</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Log2</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="TypeAnnotator-128"><a href="#TypeAnnotator-128"><span class="linenos">128</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Log10</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="TypeAnnotator-129"><a href="#TypeAnnotator-129"><span class="linenos">129</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Lower</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> +</span><span id="TypeAnnotator-130"><a href="#TypeAnnotator-130"><span class="linenos">130</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Month</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TINYINT</span><span class="p">),</span> +</span><span id="TypeAnnotator-131"><a href="#TypeAnnotator-131"><span class="linenos">131</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Pow</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="TypeAnnotator-132"><a href="#TypeAnnotator-132"><span class="linenos">132</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Quantile</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="TypeAnnotator-133"><a href="#TypeAnnotator-133"><span class="linenos">133</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">ApproxQuantile</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> +</span><span id="TypeAnnotator-134"><a href="#TypeAnnotator-134"><span class="linenos">134</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span> +</span><span id="TypeAnnotator-135"><a href="#TypeAnnotator-135"><span class="linenos">135</span></a> <span class="p">),</span> +</span><span id="TypeAnnotator-136"><a href="#TypeAnnotator-136"><span class="linenos">136</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">RegexpLike</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> +</span><span id="TypeAnnotator-137"><a href="#TypeAnnotator-137"><span class="linenos">137</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BOOLEAN</span> +</span><span id="TypeAnnotator-138"><a href="#TypeAnnotator-138"><span class="linenos">138</span></a> <span class="p">),</span> +</span><span id="TypeAnnotator-139"><a href="#TypeAnnotator-139"><span class="linenos">139</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Round</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="TypeAnnotator-140"><a href="#TypeAnnotator-140"><span class="linenos">140</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">SafeDivide</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="TypeAnnotator-141"><a href="#TypeAnnotator-141"><span class="linenos">141</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Substring</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> +</span><span id="TypeAnnotator-142"><a href="#TypeAnnotator-142"><span class="linenos">142</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">StrPosition</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span><span class="p">),</span> +</span><span id="TypeAnnotator-143"><a href="#TypeAnnotator-143"><span class="linenos">143</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">StrToDate</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">),</span> +</span><span id="TypeAnnotator-144"><a href="#TypeAnnotator-144"><span class="linenos">144</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">StrToTime</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> +</span><span id="TypeAnnotator-145"><a href="#TypeAnnotator-145"><span class="linenos">145</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span> +</span><span id="TypeAnnotator-146"><a href="#TypeAnnotator-146"><span class="linenos">146</span></a> <span class="p">),</span> +</span><span id="TypeAnnotator-147"><a href="#TypeAnnotator-147"><span class="linenos">147</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Sqrt</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="TypeAnnotator-148"><a href="#TypeAnnotator-148"><span class="linenos">148</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Stddev</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="TypeAnnotator-149"><a href="#TypeAnnotator-149"><span class="linenos">149</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">StddevPop</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="TypeAnnotator-150"><a href="#TypeAnnotator-150"><span class="linenos">150</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">StddevSamp</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="TypeAnnotator-151"><a href="#TypeAnnotator-151"><span class="linenos">151</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TimeToStr</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> +</span><span id="TypeAnnotator-152"><a href="#TypeAnnotator-152"><span class="linenos">152</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TimeToTimeStr</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> +</span><span id="TypeAnnotator-153"><a href="#TypeAnnotator-153"><span class="linenos">153</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span> +</span><span id="TypeAnnotator-154"><a href="#TypeAnnotator-154"><span class="linenos">154</span></a> <span class="p">),</span> +</span><span id="TypeAnnotator-155"><a href="#TypeAnnotator-155"><span class="linenos">155</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TimeStrToDate</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> +</span><span id="TypeAnnotator-156"><a href="#TypeAnnotator-156"><span class="linenos">156</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span> +</span><span id="TypeAnnotator-157"><a href="#TypeAnnotator-157"><span class="linenos">157</span></a> <span class="p">),</span> +</span><span id="TypeAnnotator-158"><a href="#TypeAnnotator-158"><span class="linenos">158</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TimeStrToTime</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> +</span><span id="TypeAnnotator-159"><a href="#TypeAnnotator-159"><span class="linenos">159</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span> +</span><span id="TypeAnnotator-160"><a href="#TypeAnnotator-160"><span class="linenos">160</span></a> <span class="p">),</span> +</span><span id="TypeAnnotator-161"><a href="#TypeAnnotator-161"><span class="linenos">161</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Trim</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> +</span><span id="TypeAnnotator-162"><a href="#TypeAnnotator-162"><span class="linenos">162</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TsOrDsToDateStr</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> +</span><span id="TypeAnnotator-163"><a href="#TypeAnnotator-163"><span class="linenos">163</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span> +</span><span id="TypeAnnotator-164"><a href="#TypeAnnotator-164"><span class="linenos">164</span></a> <span class="p">),</span> +</span><span id="TypeAnnotator-165"><a href="#TypeAnnotator-165"><span class="linenos">165</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TsOrDsToDate</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">),</span> +</span><span id="TypeAnnotator-166"><a href="#TypeAnnotator-166"><span class="linenos">166</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">TsOrDiToDi</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span><span class="p">),</span> +</span><span id="TypeAnnotator-167"><a href="#TypeAnnotator-167"><span class="linenos">167</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">UnixToStr</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> +</span><span id="TypeAnnotator-168"><a href="#TypeAnnotator-168"><span class="linenos">168</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">UnixToTime</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> +</span><span id="TypeAnnotator-169"><a href="#TypeAnnotator-169"><span class="linenos">169</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span> +</span><span id="TypeAnnotator-170"><a href="#TypeAnnotator-170"><span class="linenos">170</span></a> <span class="p">),</span> +</span><span id="TypeAnnotator-171"><a href="#TypeAnnotator-171"><span class="linenos">171</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">UnixToTimeStr</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> +</span><span id="TypeAnnotator-172"><a href="#TypeAnnotator-172"><span class="linenos">172</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span> +</span><span id="TypeAnnotator-173"><a href="#TypeAnnotator-173"><span class="linenos">173</span></a> <span class="p">),</span> +</span><span id="TypeAnnotator-174"><a href="#TypeAnnotator-174"><span class="linenos">174</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Upper</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">),</span> +</span><span id="TypeAnnotator-175"><a href="#TypeAnnotator-175"><span class="linenos">175</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Variance</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">),</span> +</span><span id="TypeAnnotator-176"><a href="#TypeAnnotator-176"><span class="linenos">176</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">VariancePop</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span> +</span><span id="TypeAnnotator-177"><a href="#TypeAnnotator-177"><span class="linenos">177</span></a> <span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span> +</span><span id="TypeAnnotator-178"><a href="#TypeAnnotator-178"><span class="linenos">178</span></a> <span class="p">),</span> +</span><span id="TypeAnnotator-179"><a href="#TypeAnnotator-179"><span class="linenos">179</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Week</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TINYINT</span><span class="p">),</span> +</span><span id="TypeAnnotator-180"><a href="#TypeAnnotator-180"><span class="linenos">180</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Year</span><span class="p">:</span> <span class="k">lambda</span> <span class="bp">self</span><span class="p">,</span> <span class="n">expr</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TINYINT</span><span class="p">),</span> +</span><span id="TypeAnnotator-181"><a href="#TypeAnnotator-181"><span class="linenos">181</span></a> <span class="p">}</span> +</span><span id="TypeAnnotator-182"><a href="#TypeAnnotator-182"><span class="linenos">182</span></a> +</span><span id="TypeAnnotator-183"><a href="#TypeAnnotator-183"><span class="linenos">183</span></a> <span class="c1"># Reference: https://spark.apache.org/docs/3.2.0/sql-ref-ansi-compliance.html</span> +</span><span id="TypeAnnotator-184"><a href="#TypeAnnotator-184"><span class="linenos">184</span></a> <span class="n">COERCES_TO</span> <span class="o">=</span> <span class="p">{</span> +</span><span id="TypeAnnotator-185"><a href="#TypeAnnotator-185"><span class="linenos">185</span></a> <span class="c1"># CHAR < NCHAR < VARCHAR < NVARCHAR < TEXT</span> +</span><span id="TypeAnnotator-186"><a href="#TypeAnnotator-186"><span class="linenos">186</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TEXT</span><span class="p">:</span> <span class="nb">set</span><span class="p">(),</span> +</span><span id="TypeAnnotator-187"><a href="#TypeAnnotator-187"><span class="linenos">187</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NVARCHAR</span><span class="p">:</span> <span class="p">{</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TEXT</span><span class="p">},</span> +</span><span id="TypeAnnotator-188"><a href="#TypeAnnotator-188"><span class="linenos">188</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">:</span> <span class="p">{</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NVARCHAR</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TEXT</span><span class="p">},</span> +</span><span id="TypeAnnotator-189"><a href="#TypeAnnotator-189"><span class="linenos">189</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NCHAR</span><span class="p">:</span> <span class="p">{</span> +</span><span id="TypeAnnotator-190"><a href="#TypeAnnotator-190"><span class="linenos">190</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">,</span> +</span><span id="TypeAnnotator-191"><a href="#TypeAnnotator-191"><span class="linenos">191</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NVARCHAR</span><span class="p">,</span> +</span><span id="TypeAnnotator-192"><a href="#TypeAnnotator-192"><span class="linenos">192</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TEXT</span><span class="p">,</span> +</span><span id="TypeAnnotator-193"><a href="#TypeAnnotator-193"><span class="linenos">193</span></a> <span class="p">},</span> +</span><span id="TypeAnnotator-194"><a href="#TypeAnnotator-194"><span class="linenos">194</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">CHAR</span><span class="p">:</span> <span class="p">{</span> +</span><span id="TypeAnnotator-195"><a href="#TypeAnnotator-195"><span class="linenos">195</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NCHAR</span><span class="p">,</span> +</span><span id="TypeAnnotator-196"><a href="#TypeAnnotator-196"><span class="linenos">196</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span><span class="p">,</span> +</span><span id="TypeAnnotator-197"><a href="#TypeAnnotator-197"><span class="linenos">197</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NVARCHAR</span><span class="p">,</span> +</span><span id="TypeAnnotator-198"><a href="#TypeAnnotator-198"><span class="linenos">198</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TEXT</span><span class="p">,</span> +</span><span id="TypeAnnotator-199"><a href="#TypeAnnotator-199"><span class="linenos">199</span></a> <span class="p">},</span> +</span><span id="TypeAnnotator-200"><a href="#TypeAnnotator-200"><span class="linenos">200</span></a> <span class="c1"># TINYINT < SMALLINT < INT < BIGINT < DECIMAL < FLOAT < DOUBLE</span> +</span><span id="TypeAnnotator-201"><a href="#TypeAnnotator-201"><span class="linenos">201</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">:</span> <span class="nb">set</span><span class="p">(),</span> +</span><span id="TypeAnnotator-202"><a href="#TypeAnnotator-202"><span class="linenos">202</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">:</span> <span class="p">{</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">},</span> +</span><span id="TypeAnnotator-203"><a href="#TypeAnnotator-203"><span class="linenos">203</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DECIMAL</span><span class="p">:</span> <span class="p">{</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">},</span> +</span><span id="TypeAnnotator-204"><a href="#TypeAnnotator-204"><span class="linenos">204</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BIGINT</span><span class="p">:</span> <span class="p">{</span> +</span><span id="TypeAnnotator-205"><a href="#TypeAnnotator-205"><span class="linenos">205</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DECIMAL</span><span class="p">,</span> +</span><span id="TypeAnnotator-206"><a href="#TypeAnnotator-206"><span class="linenos">206</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">,</span> +</span><span id="TypeAnnotator-207"><a href="#TypeAnnotator-207"><span class="linenos">207</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">,</span> +</span><span id="TypeAnnotator-208"><a href="#TypeAnnotator-208"><span class="linenos">208</span></a> <span class="p">},</span> +</span><span id="TypeAnnotator-209"><a href="#TypeAnnotator-209"><span class="linenos">209</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span><span class="p">:</span> <span class="p">{</span> +</span><span id="TypeAnnotator-210"><a href="#TypeAnnotator-210"><span class="linenos">210</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BIGINT</span><span class="p">,</span> +</span><span id="TypeAnnotator-211"><a href="#TypeAnnotator-211"><span class="linenos">211</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DECIMAL</span><span class="p">,</span> +</span><span id="TypeAnnotator-212"><a href="#TypeAnnotator-212"><span class="linenos">212</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">,</span> +</span><span id="TypeAnnotator-213"><a href="#TypeAnnotator-213"><span class="linenos">213</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">,</span> +</span><span id="TypeAnnotator-214"><a href="#TypeAnnotator-214"><span class="linenos">214</span></a> <span class="p">},</span> +</span><span id="TypeAnnotator-215"><a href="#TypeAnnotator-215"><span class="linenos">215</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">SMALLINT</span><span class="p">:</span> <span class="p">{</span> +</span><span id="TypeAnnotator-216"><a href="#TypeAnnotator-216"><span class="linenos">216</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span><span class="p">,</span> +</span><span id="TypeAnnotator-217"><a href="#TypeAnnotator-217"><span class="linenos">217</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BIGINT</span><span class="p">,</span> +</span><span id="TypeAnnotator-218"><a href="#TypeAnnotator-218"><span class="linenos">218</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DECIMAL</span><span class="p">,</span> +</span><span id="TypeAnnotator-219"><a href="#TypeAnnotator-219"><span class="linenos">219</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">,</span> +</span><span id="TypeAnnotator-220"><a href="#TypeAnnotator-220"><span class="linenos">220</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">,</span> +</span><span id="TypeAnnotator-221"><a href="#TypeAnnotator-221"><span class="linenos">221</span></a> <span class="p">},</span> +</span><span id="TypeAnnotator-222"><a href="#TypeAnnotator-222"><span class="linenos">222</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TINYINT</span><span class="p">:</span> <span class="p">{</span> +</span><span id="TypeAnnotator-223"><a href="#TypeAnnotator-223"><span class="linenos">223</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">SMALLINT</span><span class="p">,</span> +</span><span id="TypeAnnotator-224"><a href="#TypeAnnotator-224"><span class="linenos">224</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span><span class="p">,</span> +</span><span id="TypeAnnotator-225"><a href="#TypeAnnotator-225"><span class="linenos">225</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BIGINT</span><span class="p">,</span> +</span><span id="TypeAnnotator-226"><a href="#TypeAnnotator-226"><span class="linenos">226</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DECIMAL</span><span class="p">,</span> +</span><span id="TypeAnnotator-227"><a href="#TypeAnnotator-227"><span class="linenos">227</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">FLOAT</span><span class="p">,</span> +</span><span id="TypeAnnotator-228"><a href="#TypeAnnotator-228"><span class="linenos">228</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span><span class="p">,</span> +</span><span id="TypeAnnotator-229"><a href="#TypeAnnotator-229"><span class="linenos">229</span></a> <span class="p">},</span> +</span><span id="TypeAnnotator-230"><a href="#TypeAnnotator-230"><span class="linenos">230</span></a> <span class="c1"># DATE < DATETIME < TIMESTAMP < TIMESTAMPTZ < TIMESTAMPLTZ</span> +</span><span id="TypeAnnotator-231"><a href="#TypeAnnotator-231"><span class="linenos">231</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPLTZ</span><span class="p">:</span> <span class="nb">set</span><span class="p">(),</span> +</span><span id="TypeAnnotator-232"><a href="#TypeAnnotator-232"><span class="linenos">232</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPTZ</span><span class="p">:</span> <span class="p">{</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPLTZ</span><span class="p">},</span> +</span><span id="TypeAnnotator-233"><a href="#TypeAnnotator-233"><span class="linenos">233</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span><span class="p">:</span> <span class="p">{</span> +</span><span id="TypeAnnotator-234"><a href="#TypeAnnotator-234"><span class="linenos">234</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPTZ</span><span class="p">,</span> +</span><span id="TypeAnnotator-235"><a href="#TypeAnnotator-235"><span class="linenos">235</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPLTZ</span><span class="p">,</span> +</span><span id="TypeAnnotator-236"><a href="#TypeAnnotator-236"><span class="linenos">236</span></a> <span class="p">},</span> +</span><span id="TypeAnnotator-237"><a href="#TypeAnnotator-237"><span class="linenos">237</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</span><span class="p">:</span> <span class="p">{</span> +</span><span id="TypeAnnotator-238"><a href="#TypeAnnotator-238"><span class="linenos">238</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span><span class="p">,</span> +</span><span id="TypeAnnotator-239"><a href="#TypeAnnotator-239"><span class="linenos">239</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPTZ</span><span class="p">,</span> +</span><span id="TypeAnnotator-240"><a href="#TypeAnnotator-240"><span class="linenos">240</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPLTZ</span><span class="p">,</span> +</span><span id="TypeAnnotator-241"><a href="#TypeAnnotator-241"><span class="linenos">241</span></a> <span class="p">},</span> +</span><span id="TypeAnnotator-242"><a href="#TypeAnnotator-242"><span class="linenos">242</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">:</span> <span class="p">{</span> +</span><span id="TypeAnnotator-243"><a href="#TypeAnnotator-243"><span class="linenos">243</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</span><span class="p">,</span> +</span><span id="TypeAnnotator-244"><a href="#TypeAnnotator-244"><span class="linenos">244</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMP</span><span class="p">,</span> +</span><span id="TypeAnnotator-245"><a href="#TypeAnnotator-245"><span class="linenos">245</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPTZ</span><span class="p">,</span> +</span><span id="TypeAnnotator-246"><a href="#TypeAnnotator-246"><span class="linenos">246</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">TIMESTAMPLTZ</span><span class="p">,</span> +</span><span id="TypeAnnotator-247"><a href="#TypeAnnotator-247"><span class="linenos">247</span></a> <span class="p">},</span> +</span><span id="TypeAnnotator-248"><a href="#TypeAnnotator-248"><span class="linenos">248</span></a> <span class="p">}</span> </span><span id="TypeAnnotator-249"><a href="#TypeAnnotator-249"><span class="linenos">249</span></a> -</span><span id="TypeAnnotator-250"><a href="#TypeAnnotator-250"><span class="linenos">250</span></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">schema</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">annotators</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">coerces_to</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> -</span><span id="TypeAnnotator-251"><a href="#TypeAnnotator-251"><span class="linenos">251</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span> -</span><span id="TypeAnnotator-252"><a href="#TypeAnnotator-252"><span class="linenos">252</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">annotators</span> <span class="o">=</span> <span class="n">annotators</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">ANNOTATORS</span> -</span><span id="TypeAnnotator-253"><a href="#TypeAnnotator-253"><span class="linenos">253</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">coerces_to</span> <span class="o">=</span> <span class="n">coerces_to</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">COERCES_TO</span> -</span><span id="TypeAnnotator-254"><a href="#TypeAnnotator-254"><span class="linenos">254</span></a> -</span><span id="TypeAnnotator-255"><a href="#TypeAnnotator-255"><span class="linenos">255</span></a> <span class="k">def</span> <span class="nf">annotate</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> -</span><span id="TypeAnnotator-256"><a href="#TypeAnnotator-256"><span class="linenos">256</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">TRAVERSABLES</span><span class="p">):</span> -</span><span id="TypeAnnotator-257"><a href="#TypeAnnotator-257"><span class="linenos">257</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="TypeAnnotator-258"><a href="#TypeAnnotator-258"><span class="linenos">258</span></a> <span class="n">selects</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="TypeAnnotator-259"><a href="#TypeAnnotator-259"><span class="linenos">259</span></a> <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">items</span><span class="p">():</span> -</span><span id="TypeAnnotator-260"><a href="#TypeAnnotator-260"><span class="linenos">260</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">):</span> -</span><span id="TypeAnnotator-261"><a href="#TypeAnnotator-261"><span class="linenos">261</span></a> <span class="k">continue</span> -</span><span id="TypeAnnotator-262"><a href="#TypeAnnotator-262"><span class="linenos">262</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">):</span> -</span><span id="TypeAnnotator-263"><a href="#TypeAnnotator-263"><span class="linenos">263</span></a> <span class="n">values</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="TypeAnnotator-264"><a href="#TypeAnnotator-264"><span class="linenos">264</span></a> -</span><span id="TypeAnnotator-265"><a href="#TypeAnnotator-265"><span class="linenos">265</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Lateral</span><span class="p">):</span> -</span><span id="TypeAnnotator-266"><a href="#TypeAnnotator-266"><span class="linenos">266</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Explode</span><span class="p">):</span> -</span><span id="TypeAnnotator-267"><a href="#TypeAnnotator-267"><span class="linenos">267</span></a> <span class="n">values</span> <span class="o">=</span> <span class="p">[</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">this</span><span class="p">]</span> -</span><span id="TypeAnnotator-268"><a href="#TypeAnnotator-268"><span class="linenos">268</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="TypeAnnotator-269"><a href="#TypeAnnotator-269"><span class="linenos">269</span></a> <span class="n">values</span> <span class="o">=</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">expressions</span> -</span><span id="TypeAnnotator-270"><a href="#TypeAnnotator-270"><span class="linenos">270</span></a> -</span><span id="TypeAnnotator-271"><a href="#TypeAnnotator-271"><span class="linenos">271</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">values</span><span class="p">:</span> -</span><span id="TypeAnnotator-272"><a href="#TypeAnnotator-272"><span class="linenos">272</span></a> <span class="k">continue</span> -</span><span id="TypeAnnotator-273"><a href="#TypeAnnotator-273"><span class="linenos">273</span></a> -</span><span id="TypeAnnotator-274"><a href="#TypeAnnotator-274"><span class="linenos">274</span></a> <span class="n">selects</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="p">{</span> -</span><span id="TypeAnnotator-275"><a href="#TypeAnnotator-275"><span class="linenos">275</span></a> <span class="n">alias</span><span class="p">:</span> <span class="n">column</span> -</span><span id="TypeAnnotator-276"><a href="#TypeAnnotator-276"><span class="linenos">276</span></a> <span class="k">for</span> <span class="n">alias</span><span class="p">,</span> <span class="n">column</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span> -</span><span id="TypeAnnotator-277"><a href="#TypeAnnotator-277"><span class="linenos">277</span></a> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span><span class="p">,</span> -</span><span id="TypeAnnotator-278"><a href="#TypeAnnotator-278"><span class="linenos">278</span></a> <span class="n">values</span><span class="p">,</span> -</span><span id="TypeAnnotator-279"><a href="#TypeAnnotator-279"><span class="linenos">279</span></a> <span class="p">)</span> -</span><span id="TypeAnnotator-280"><a href="#TypeAnnotator-280"><span class="linenos">280</span></a> <span class="p">}</span> -</span><span id="TypeAnnotator-281"><a href="#TypeAnnotator-281"><span class="linenos">281</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="TypeAnnotator-282"><a href="#TypeAnnotator-282"><span class="linenos">282</span></a> <span class="n">selects</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="p">{</span> -</span><span id="TypeAnnotator-283"><a href="#TypeAnnotator-283"><span class="linenos">283</span></a> <span class="n">select</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">:</span> <span class="n">select</span> <span class="k">for</span> <span class="n">select</span> <span class="ow">in</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span> -</span><span id="TypeAnnotator-284"><a href="#TypeAnnotator-284"><span class="linenos">284</span></a> <span class="p">}</span> -</span><span id="TypeAnnotator-285"><a href="#TypeAnnotator-285"><span class="linenos">285</span></a> <span class="c1"># First annotate the current scope's column references</span> -</span><span id="TypeAnnotator-286"><a href="#TypeAnnotator-286"><span class="linenos">286</span></a> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span> -</span><span id="TypeAnnotator-287"><a href="#TypeAnnotator-287"><span class="linenos">287</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">:</span> -</span><span id="TypeAnnotator-288"><a href="#TypeAnnotator-288"><span class="linenos">288</span></a> <span class="k">continue</span> -</span><span id="TypeAnnotator-289"><a href="#TypeAnnotator-289"><span class="linenos">289</span></a> -</span><span id="TypeAnnotator-290"><a href="#TypeAnnotator-290"><span class="linenos">290</span></a> <span class="n">source</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">)</span> -</span><span id="TypeAnnotator-291"><a href="#TypeAnnotator-291"><span class="linenos">291</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> -</span><span id="TypeAnnotator-292"><a href="#TypeAnnotator-292"><span class="linenos">292</span></a> <span class="n">col</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">get_column_type</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">col</span><span class="p">)</span> -</span><span id="TypeAnnotator-293"><a href="#TypeAnnotator-293"><span class="linenos">293</span></a> <span class="k">elif</span> <span class="n">source</span> <span class="ow">and</span> <span class="n">col</span><span class="o">.</span><span class="n">table</span> <span class="ow">in</span> <span class="n">selects</span> <span class="ow">and</span> <span class="n">col</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">selects</span><span class="p">[</span><span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">]:</span> -</span><span id="TypeAnnotator-294"><a href="#TypeAnnotator-294"><span class="linenos">294</span></a> <span class="n">col</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">selects</span><span class="p">[</span><span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">][</span><span class="n">col</span><span class="o">.</span><span class="n">name</span><span class="p">]</span><span class="o">.</span><span class="n">type</span> -</span><span id="TypeAnnotator-295"><a href="#TypeAnnotator-295"><span class="linenos">295</span></a> <span class="c1"># Then (possibly) annotate the remaining expressions in the scope</span> -</span><span id="TypeAnnotator-296"><a href="#TypeAnnotator-296"><span class="linenos">296</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_maybe_annotate</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">)</span> -</span><span id="TypeAnnotator-297"><a href="#TypeAnnotator-297"><span class="linenos">297</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_maybe_annotate</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> <span class="c1"># This takes care of non-traversable expressions</span> -</span><span id="TypeAnnotator-298"><a href="#TypeAnnotator-298"><span class="linenos">298</span></a> -</span><span id="TypeAnnotator-299"><a href="#TypeAnnotator-299"><span class="linenos">299</span></a> <span class="k">def</span> <span class="nf">_maybe_annotate</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> -</span><span id="TypeAnnotator-300"><a href="#TypeAnnotator-300"><span class="linenos">300</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">):</span> -</span><span id="TypeAnnotator-301"><a href="#TypeAnnotator-301"><span class="linenos">301</span></a> <span class="k">return</span> <span class="kc">None</span> -</span><span id="TypeAnnotator-302"><a href="#TypeAnnotator-302"><span class="linenos">302</span></a> -</span><span id="TypeAnnotator-303"><a href="#TypeAnnotator-303"><span class="linenos">303</span></a> <span class="k">if</span> <span class="n">expression</span><span class="o">.</span><span class="n">type</span><span class="p">:</span> -</span><span id="TypeAnnotator-304"><a href="#TypeAnnotator-304"><span class="linenos">304</span></a> <span class="k">return</span> <span class="n">expression</span> <span class="c1"># We've already inferred the expression's type</span> -</span><span id="TypeAnnotator-305"><a href="#TypeAnnotator-305"><span class="linenos">305</span></a> -</span><span id="TypeAnnotator-306"><a href="#TypeAnnotator-306"><span class="linenos">306</span></a> <span class="n">annotator</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">annotators</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="vm">__class__</span><span class="p">)</span> -</span><span id="TypeAnnotator-307"><a href="#TypeAnnotator-307"><span class="linenos">307</span></a> -</span><span id="TypeAnnotator-308"><a href="#TypeAnnotator-308"><span class="linenos">308</span></a> <span class="k">return</span> <span class="p">(</span> -</span><span id="TypeAnnotator-309"><a href="#TypeAnnotator-309"><span class="linenos">309</span></a> <span class="n">annotator</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">)</span> -</span><span id="TypeAnnotator-310"><a href="#TypeAnnotator-310"><span class="linenos">310</span></a> <span class="k">if</span> <span class="n">annotator</span> -</span><span id="TypeAnnotator-311"><a href="#TypeAnnotator-311"><span class="linenos">311</span></a> <span class="k">else</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">UNKNOWN</span><span class="p">)</span> -</span><span id="TypeAnnotator-312"><a href="#TypeAnnotator-312"><span class="linenos">312</span></a> <span class="p">)</span> -</span><span id="TypeAnnotator-313"><a href="#TypeAnnotator-313"><span class="linenos">313</span></a> -</span><span id="TypeAnnotator-314"><a href="#TypeAnnotator-314"><span class="linenos">314</span></a> <span class="k">def</span> <span class="nf">_annotate_args</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> -</span><span id="TypeAnnotator-315"><a href="#TypeAnnotator-315"><span class="linenos">315</span></a> <span class="k">for</span> <span class="n">value</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> -</span><span id="TypeAnnotator-316"><a href="#TypeAnnotator-316"><span class="linenos">316</span></a> <span class="k">for</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">ensure_collection</span><span class="p">(</span><span class="n">value</span><span class="p">):</span> -</span><span id="TypeAnnotator-317"><a href="#TypeAnnotator-317"><span class="linenos">317</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_maybe_annotate</span><span class="p">(</span><span class="n">v</span><span class="p">)</span> +</span><span id="TypeAnnotator-250"><a href="#TypeAnnotator-250"><span class="linenos">250</span></a> <span class="n">TRAVERSABLES</span> <span class="o">=</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Union</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">)</span> +</span><span id="TypeAnnotator-251"><a href="#TypeAnnotator-251"><span class="linenos">251</span></a> +</span><span id="TypeAnnotator-252"><a href="#TypeAnnotator-252"><span class="linenos">252</span></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">schema</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">annotators</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">coerces_to</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> +</span><span id="TypeAnnotator-253"><a href="#TypeAnnotator-253"><span class="linenos">253</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span> +</span><span id="TypeAnnotator-254"><a href="#TypeAnnotator-254"><span class="linenos">254</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">annotators</span> <span class="o">=</span> <span class="n">annotators</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">ANNOTATORS</span> +</span><span id="TypeAnnotator-255"><a href="#TypeAnnotator-255"><span class="linenos">255</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">coerces_to</span> <span class="o">=</span> <span class="n">coerces_to</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">COERCES_TO</span> +</span><span id="TypeAnnotator-256"><a href="#TypeAnnotator-256"><span class="linenos">256</span></a> +</span><span id="TypeAnnotator-257"><a href="#TypeAnnotator-257"><span class="linenos">257</span></a> <span class="k">def</span> <span class="nf">annotate</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> +</span><span id="TypeAnnotator-258"><a href="#TypeAnnotator-258"><span class="linenos">258</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">TRAVERSABLES</span><span class="p">):</span> +</span><span id="TypeAnnotator-259"><a href="#TypeAnnotator-259"><span class="linenos">259</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="TypeAnnotator-260"><a href="#TypeAnnotator-260"><span class="linenos">260</span></a> <span class="n">selects</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="TypeAnnotator-261"><a href="#TypeAnnotator-261"><span class="linenos">261</span></a> <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">items</span><span class="p">():</span> +</span><span id="TypeAnnotator-262"><a href="#TypeAnnotator-262"><span class="linenos">262</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">):</span> +</span><span id="TypeAnnotator-263"><a href="#TypeAnnotator-263"><span class="linenos">263</span></a> <span class="k">continue</span> +</span><span id="TypeAnnotator-264"><a href="#TypeAnnotator-264"><span class="linenos">264</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">):</span> +</span><span id="TypeAnnotator-265"><a href="#TypeAnnotator-265"><span class="linenos">265</span></a> <span class="n">values</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="TypeAnnotator-266"><a href="#TypeAnnotator-266"><span class="linenos">266</span></a> +</span><span id="TypeAnnotator-267"><a href="#TypeAnnotator-267"><span class="linenos">267</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Lateral</span><span class="p">):</span> +</span><span id="TypeAnnotator-268"><a href="#TypeAnnotator-268"><span class="linenos">268</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Explode</span><span class="p">):</span> +</span><span id="TypeAnnotator-269"><a href="#TypeAnnotator-269"><span class="linenos">269</span></a> <span class="n">values</span> <span class="o">=</span> <span class="p">[</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">this</span><span class="p">]</span> +</span><span id="TypeAnnotator-270"><a href="#TypeAnnotator-270"><span class="linenos">270</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="TypeAnnotator-271"><a href="#TypeAnnotator-271"><span class="linenos">271</span></a> <span class="n">values</span> <span class="o">=</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">expressions</span> +</span><span id="TypeAnnotator-272"><a href="#TypeAnnotator-272"><span class="linenos">272</span></a> +</span><span id="TypeAnnotator-273"><a href="#TypeAnnotator-273"><span class="linenos">273</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">values</span><span class="p">:</span> +</span><span id="TypeAnnotator-274"><a href="#TypeAnnotator-274"><span class="linenos">274</span></a> <span class="k">continue</span> +</span><span id="TypeAnnotator-275"><a href="#TypeAnnotator-275"><span class="linenos">275</span></a> +</span><span id="TypeAnnotator-276"><a href="#TypeAnnotator-276"><span class="linenos">276</span></a> <span class="n">selects</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="p">{</span> +</span><span id="TypeAnnotator-277"><a href="#TypeAnnotator-277"><span class="linenos">277</span></a> <span class="n">alias</span><span class="p">:</span> <span class="n">column</span> +</span><span id="TypeAnnotator-278"><a href="#TypeAnnotator-278"><span class="linenos">278</span></a> <span class="k">for</span> <span class="n">alias</span><span class="p">,</span> <span class="n">column</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span> +</span><span id="TypeAnnotator-279"><a href="#TypeAnnotator-279"><span class="linenos">279</span></a> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span><span class="p">,</span> +</span><span id="TypeAnnotator-280"><a href="#TypeAnnotator-280"><span class="linenos">280</span></a> <span class="n">values</span><span class="p">,</span> +</span><span id="TypeAnnotator-281"><a href="#TypeAnnotator-281"><span class="linenos">281</span></a> <span class="p">)</span> +</span><span id="TypeAnnotator-282"><a href="#TypeAnnotator-282"><span class="linenos">282</span></a> <span class="p">}</span> +</span><span id="TypeAnnotator-283"><a href="#TypeAnnotator-283"><span class="linenos">283</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="TypeAnnotator-284"><a href="#TypeAnnotator-284"><span class="linenos">284</span></a> <span class="n">selects</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="p">{</span> +</span><span id="TypeAnnotator-285"><a href="#TypeAnnotator-285"><span class="linenos">285</span></a> <span class="n">select</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">:</span> <span class="n">select</span> <span class="k">for</span> <span class="n">select</span> <span class="ow">in</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span> +</span><span id="TypeAnnotator-286"><a href="#TypeAnnotator-286"><span class="linenos">286</span></a> <span class="p">}</span> +</span><span id="TypeAnnotator-287"><a href="#TypeAnnotator-287"><span class="linenos">287</span></a> <span class="c1"># First annotate the current scope's column references</span> +</span><span id="TypeAnnotator-288"><a href="#TypeAnnotator-288"><span class="linenos">288</span></a> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span> +</span><span id="TypeAnnotator-289"><a href="#TypeAnnotator-289"><span class="linenos">289</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">:</span> +</span><span id="TypeAnnotator-290"><a href="#TypeAnnotator-290"><span class="linenos">290</span></a> <span class="k">continue</span> +</span><span id="TypeAnnotator-291"><a href="#TypeAnnotator-291"><span class="linenos">291</span></a> +</span><span id="TypeAnnotator-292"><a href="#TypeAnnotator-292"><span class="linenos">292</span></a> <span class="n">source</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">)</span> +</span><span id="TypeAnnotator-293"><a href="#TypeAnnotator-293"><span class="linenos">293</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> +</span><span id="TypeAnnotator-294"><a href="#TypeAnnotator-294"><span class="linenos">294</span></a> <span class="n">col</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">get_column_type</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">col</span><span class="p">)</span> +</span><span id="TypeAnnotator-295"><a href="#TypeAnnotator-295"><span class="linenos">295</span></a> <span class="k">elif</span> <span class="n">source</span> <span class="ow">and</span> <span class="n">col</span><span class="o">.</span><span class="n">table</span> <span class="ow">in</span> <span class="n">selects</span> <span class="ow">and</span> <span class="n">col</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">selects</span><span class="p">[</span><span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">]:</span> +</span><span id="TypeAnnotator-296"><a href="#TypeAnnotator-296"><span class="linenos">296</span></a> <span class="n">col</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">selects</span><span class="p">[</span><span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">][</span><span class="n">col</span><span class="o">.</span><span class="n">name</span><span class="p">]</span><span class="o">.</span><span class="n">type</span> +</span><span id="TypeAnnotator-297"><a href="#TypeAnnotator-297"><span class="linenos">297</span></a> <span class="c1"># Then (possibly) annotate the remaining expressions in the scope</span> +</span><span id="TypeAnnotator-298"><a href="#TypeAnnotator-298"><span class="linenos">298</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_maybe_annotate</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">)</span> +</span><span id="TypeAnnotator-299"><a href="#TypeAnnotator-299"><span class="linenos">299</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_maybe_annotate</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> <span class="c1"># This takes care of non-traversable expressions</span> +</span><span id="TypeAnnotator-300"><a href="#TypeAnnotator-300"><span class="linenos">300</span></a> +</span><span id="TypeAnnotator-301"><a href="#TypeAnnotator-301"><span class="linenos">301</span></a> <span class="k">def</span> <span class="nf">_maybe_annotate</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> +</span><span id="TypeAnnotator-302"><a href="#TypeAnnotator-302"><span class="linenos">302</span></a> <span class="k">if</span> <span class="n">expression</span><span class="o">.</span><span class="n">type</span><span class="p">:</span> +</span><span id="TypeAnnotator-303"><a href="#TypeAnnotator-303"><span class="linenos">303</span></a> <span class="k">return</span> <span class="n">expression</span> <span class="c1"># We've already inferred the expression's type</span> +</span><span id="TypeAnnotator-304"><a href="#TypeAnnotator-304"><span class="linenos">304</span></a> +</span><span id="TypeAnnotator-305"><a href="#TypeAnnotator-305"><span class="linenos">305</span></a> <span class="n">annotator</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">annotators</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="vm">__class__</span><span class="p">)</span> +</span><span id="TypeAnnotator-306"><a href="#TypeAnnotator-306"><span class="linenos">306</span></a> +</span><span id="TypeAnnotator-307"><a href="#TypeAnnotator-307"><span class="linenos">307</span></a> <span class="k">return</span> <span class="p">(</span> +</span><span id="TypeAnnotator-308"><a href="#TypeAnnotator-308"><span class="linenos">308</span></a> <span class="n">annotator</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">)</span> +</span><span id="TypeAnnotator-309"><a href="#TypeAnnotator-309"><span class="linenos">309</span></a> <span class="k">if</span> <span class="n">annotator</span> +</span><span id="TypeAnnotator-310"><a href="#TypeAnnotator-310"><span class="linenos">310</span></a> <span class="k">else</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_with_type</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">UNKNOWN</span><span class="p">)</span> +</span><span id="TypeAnnotator-311"><a href="#TypeAnnotator-311"><span class="linenos">311</span></a> <span class="p">)</span> +</span><span id="TypeAnnotator-312"><a href="#TypeAnnotator-312"><span class="linenos">312</span></a> +</span><span id="TypeAnnotator-313"><a href="#TypeAnnotator-313"><span class="linenos">313</span></a> <span class="k">def</span> <span class="nf">_annotate_args</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> +</span><span id="TypeAnnotator-314"><a href="#TypeAnnotator-314"><span class="linenos">314</span></a> <span class="k">for</span> <span class="n">_</span><span class="p">,</span> <span class="n">value</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">iter_expressions</span><span class="p">():</span> +</span><span id="TypeAnnotator-315"><a href="#TypeAnnotator-315"><span class="linenos">315</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_maybe_annotate</span><span class="p">(</span><span class="n">value</span><span class="p">)</span> +</span><span id="TypeAnnotator-316"><a href="#TypeAnnotator-316"><span class="linenos">316</span></a> +</span><span id="TypeAnnotator-317"><a href="#TypeAnnotator-317"><span class="linenos">317</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="TypeAnnotator-318"><a href="#TypeAnnotator-318"><span class="linenos">318</span></a> -</span><span id="TypeAnnotator-319"><a href="#TypeAnnotator-319"><span class="linenos">319</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="TypeAnnotator-320"><a href="#TypeAnnotator-320"><span class="linenos">320</span></a> -</span><span id="TypeAnnotator-321"><a href="#TypeAnnotator-321"><span class="linenos">321</span></a> <span class="k">def</span> <span class="nf">_maybe_coerce</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">type1</span><span class="p">,</span> <span class="n">type2</span><span class="p">):</span> -</span><span id="TypeAnnotator-322"><a href="#TypeAnnotator-322"><span class="linenos">322</span></a> <span class="c1"># We propagate the NULL / UNKNOWN types upwards if found</span> -</span><span id="TypeAnnotator-323"><a href="#TypeAnnotator-323"><span class="linenos">323</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">type1</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="p">):</span> -</span><span id="TypeAnnotator-324"><a href="#TypeAnnotator-324"><span class="linenos">324</span></a> <span class="n">type1</span> <span class="o">=</span> <span class="n">type1</span><span class="o">.</span><span class="n">this</span> -</span><span id="TypeAnnotator-325"><a href="#TypeAnnotator-325"><span class="linenos">325</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">type2</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="p">):</span> -</span><span id="TypeAnnotator-326"><a href="#TypeAnnotator-326"><span class="linenos">326</span></a> <span class="n">type2</span> <span class="o">=</span> <span class="n">type2</span><span class="o">.</span><span class="n">this</span> -</span><span id="TypeAnnotator-327"><a href="#TypeAnnotator-327"><span class="linenos">327</span></a> -</span><span id="TypeAnnotator-328"><a href="#TypeAnnotator-328"><span class="linenos">328</span></a> <span class="k">if</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NULL</span> <span class="ow">in</span> <span class="p">(</span><span class="n">type1</span><span class="p">,</span> <span class="n">type2</span><span class="p">):</span> -</span><span id="TypeAnnotator-329"><a href="#TypeAnnotator-329"><span class="linenos">329</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NULL</span> -</span><span id="TypeAnnotator-330"><a href="#TypeAnnotator-330"><span class="linenos">330</span></a> <span class="k">if</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">UNKNOWN</span> <span class="ow">in</span> <span class="p">(</span><span class="n">type1</span><span class="p">,</span> <span class="n">type2</span><span class="p">):</span> -</span><span id="TypeAnnotator-331"><a href="#TypeAnnotator-331"><span class="linenos">331</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">UNKNOWN</span> +</span><span id="TypeAnnotator-319"><a href="#TypeAnnotator-319"><span class="linenos">319</span></a> <span class="k">def</span> <span class="nf">_maybe_coerce</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">type1</span><span class="p">,</span> <span class="n">type2</span><span class="p">):</span> +</span><span id="TypeAnnotator-320"><a href="#TypeAnnotator-320"><span class="linenos">320</span></a> <span class="c1"># We propagate the NULL / UNKNOWN types upwards if found</span> +</span><span id="TypeAnnotator-321"><a href="#TypeAnnotator-321"><span class="linenos">321</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">type1</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="p">):</span> +</span><span id="TypeAnnotator-322"><a href="#TypeAnnotator-322"><span class="linenos">322</span></a> <span class="n">type1</span> <span class="o">=</span> <span class="n">type1</span><span class="o">.</span><span class="n">this</span> +</span><span id="TypeAnnotator-323"><a href="#TypeAnnotator-323"><span class="linenos">323</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">type2</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="p">):</span> +</span><span id="TypeAnnotator-324"><a href="#TypeAnnotator-324"><span class="linenos">324</span></a> <span class="n">type2</span> <span class="o">=</span> <span class="n">type2</span><span class="o">.</span><span class="n">this</span> +</span><span id="TypeAnnotator-325"><a href="#TypeAnnotator-325"><span class="linenos">325</span></a> +</span><span id="TypeAnnotator-326"><a href="#TypeAnnotator-326"><span class="linenos">326</span></a> <span class="k">if</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NULL</span> <span class="ow">in</span> <span class="p">(</span><span class="n">type1</span><span class="p">,</span> <span class="n">type2</span><span class="p">):</span> +</span><span id="TypeAnnotator-327"><a href="#TypeAnnotator-327"><span class="linenos">327</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NULL</span> +</span><span id="TypeAnnotator-328"><a href="#TypeAnnotator-328"><span class="linenos">328</span></a> <span class="k">if</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">UNKNOWN</span> <span class="ow">in</span> <span class="p">(</span><span class="n">type1</span><span class="p">,</span> <span class="n">type2</span><span class="p">):</span> +</span><span id="TypeAnnotator-329"><a href="#TypeAnnotator-329"><span class="linenos">329</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">UNKNOWN</span> +</span><span id="TypeAnnotator-330"><a href="#TypeAnnotator-330"><span class="linenos">330</span></a> +</span><span id="TypeAnnotator-331"><a href="#TypeAnnotator-331"><span class="linenos">331</span></a> <span class="k">return</span> <span class="n">type2</span> <span class="k">if</span> <span class="n">type2</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">coerces_to</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">type1</span><span class="p">,</span> <span class="p">{})</span> <span class="k">else</span> <span class="n">type1</span> </span><span id="TypeAnnotator-332"><a href="#TypeAnnotator-332"><span class="linenos">332</span></a> -</span><span id="TypeAnnotator-333"><a href="#TypeAnnotator-333"><span class="linenos">333</span></a> <span class="k">return</span> <span class="n">type2</span> <span class="k">if</span> <span class="n">type2</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">coerces_to</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">type1</span><span class="p">,</span> <span class="p">{})</span> <span class="k">else</span> <span class="n">type1</span> -</span><span id="TypeAnnotator-334"><a href="#TypeAnnotator-334"><span class="linenos">334</span></a> -</span><span id="TypeAnnotator-335"><a href="#TypeAnnotator-335"><span class="linenos">335</span></a> <span class="k">def</span> <span class="nf">_annotate_binary</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> -</span><span id="TypeAnnotator-336"><a href="#TypeAnnotator-336"><span class="linenos">336</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_args</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="TypeAnnotator-337"><a href="#TypeAnnotator-337"><span class="linenos">337</span></a> -</span><span id="TypeAnnotator-338"><a href="#TypeAnnotator-338"><span class="linenos">338</span></a> <span class="n">left_type</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">left</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> -</span><span id="TypeAnnotator-339"><a href="#TypeAnnotator-339"><span class="linenos">339</span></a> <span class="n">right_type</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">right</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> -</span><span id="TypeAnnotator-340"><a href="#TypeAnnotator-340"><span class="linenos">340</span></a> -</span><span id="TypeAnnotator-341"><a href="#TypeAnnotator-341"><span class="linenos">341</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">)):</span> -</span><span id="TypeAnnotator-342"><a href="#TypeAnnotator-342"><span class="linenos">342</span></a> <span class="k">if</span> <span class="n">left_type</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NULL</span> <span class="ow">and</span> <span class="n">right_type</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NULL</span><span class="p">:</span> -</span><span id="TypeAnnotator-343"><a href="#TypeAnnotator-343"><span class="linenos">343</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NULL</span> -</span><span id="TypeAnnotator-344"><a href="#TypeAnnotator-344"><span class="linenos">344</span></a> <span class="k">elif</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NULL</span> <span class="ow">in</span> <span class="p">(</span><span class="n">left_type</span><span class="p">,</span> <span class="n">right_type</span><span class="p">):</span> -</span><span id="TypeAnnotator-345"><a href="#TypeAnnotator-345"><span class="linenos">345</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">build</span><span class="p">(</span> -</span><span id="TypeAnnotator-346"><a href="#TypeAnnotator-346"><span class="linenos">346</span></a> <span class="s2">"NULLABLE"</span><span class="p">,</span> <span class="n">expressions</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">build</span><span class="p">(</span><span class="s2">"BOOLEAN"</span><span class="p">)</span> -</span><span id="TypeAnnotator-347"><a href="#TypeAnnotator-347"><span class="linenos">347</span></a> <span class="p">)</span> -</span><span id="TypeAnnotator-348"><a href="#TypeAnnotator-348"><span class="linenos">348</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="TypeAnnotator-349"><a href="#TypeAnnotator-349"><span class="linenos">349</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BOOLEAN</span> -</span><span id="TypeAnnotator-350"><a href="#TypeAnnotator-350"><span class="linenos">350</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Predicate</span><span class="p">)):</span> -</span><span id="TypeAnnotator-351"><a href="#TypeAnnotator-351"><span class="linenos">351</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BOOLEAN</span> -</span><span id="TypeAnnotator-352"><a href="#TypeAnnotator-352"><span class="linenos">352</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="TypeAnnotator-353"><a href="#TypeAnnotator-353"><span class="linenos">353</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_maybe_coerce</span><span class="p">(</span><span class="n">left_type</span><span class="p">,</span> <span class="n">right_type</span><span class="p">)</span> +</span><span id="TypeAnnotator-333"><a href="#TypeAnnotator-333"><span class="linenos">333</span></a> <span class="k">def</span> <span class="nf">_annotate_binary</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> +</span><span id="TypeAnnotator-334"><a href="#TypeAnnotator-334"><span class="linenos">334</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_args</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="TypeAnnotator-335"><a href="#TypeAnnotator-335"><span class="linenos">335</span></a> +</span><span id="TypeAnnotator-336"><a href="#TypeAnnotator-336"><span class="linenos">336</span></a> <span class="n">left_type</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">left</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> +</span><span id="TypeAnnotator-337"><a href="#TypeAnnotator-337"><span class="linenos">337</span></a> <span class="n">right_type</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">right</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> +</span><span id="TypeAnnotator-338"><a href="#TypeAnnotator-338"><span class="linenos">338</span></a> +</span><span id="TypeAnnotator-339"><a href="#TypeAnnotator-339"><span class="linenos">339</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">)):</span> +</span><span id="TypeAnnotator-340"><a href="#TypeAnnotator-340"><span class="linenos">340</span></a> <span class="k">if</span> <span class="n">left_type</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NULL</span> <span class="ow">and</span> <span class="n">right_type</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NULL</span><span class="p">:</span> +</span><span id="TypeAnnotator-341"><a href="#TypeAnnotator-341"><span class="linenos">341</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NULL</span> +</span><span id="TypeAnnotator-342"><a href="#TypeAnnotator-342"><span class="linenos">342</span></a> <span class="k">elif</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">NULL</span> <span class="ow">in</span> <span class="p">(</span><span class="n">left_type</span><span class="p">,</span> <span class="n">right_type</span><span class="p">):</span> +</span><span id="TypeAnnotator-343"><a href="#TypeAnnotator-343"><span class="linenos">343</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">build</span><span class="p">(</span> +</span><span id="TypeAnnotator-344"><a href="#TypeAnnotator-344"><span class="linenos">344</span></a> <span class="s2">"NULLABLE"</span><span class="p">,</span> <span class="n">expressions</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">build</span><span class="p">(</span><span class="s2">"BOOLEAN"</span><span class="p">)</span> +</span><span id="TypeAnnotator-345"><a href="#TypeAnnotator-345"><span class="linenos">345</span></a> <span class="p">)</span> +</span><span id="TypeAnnotator-346"><a href="#TypeAnnotator-346"><span class="linenos">346</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="TypeAnnotator-347"><a href="#TypeAnnotator-347"><span class="linenos">347</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BOOLEAN</span> +</span><span id="TypeAnnotator-348"><a href="#TypeAnnotator-348"><span class="linenos">348</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Predicate</span><span class="p">)):</span> +</span><span id="TypeAnnotator-349"><a href="#TypeAnnotator-349"><span class="linenos">349</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BOOLEAN</span> +</span><span id="TypeAnnotator-350"><a href="#TypeAnnotator-350"><span class="linenos">350</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="TypeAnnotator-351"><a href="#TypeAnnotator-351"><span class="linenos">351</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_maybe_coerce</span><span class="p">(</span><span class="n">left_type</span><span class="p">,</span> <span class="n">right_type</span><span class="p">)</span> +</span><span id="TypeAnnotator-352"><a href="#TypeAnnotator-352"><span class="linenos">352</span></a> +</span><span id="TypeAnnotator-353"><a href="#TypeAnnotator-353"><span class="linenos">353</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="TypeAnnotator-354"><a href="#TypeAnnotator-354"><span class="linenos">354</span></a> -</span><span id="TypeAnnotator-355"><a href="#TypeAnnotator-355"><span class="linenos">355</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="TypeAnnotator-356"><a href="#TypeAnnotator-356"><span class="linenos">356</span></a> -</span><span id="TypeAnnotator-357"><a href="#TypeAnnotator-357"><span class="linenos">357</span></a> <span class="k">def</span> <span class="nf">_annotate_unary</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> -</span><span id="TypeAnnotator-358"><a href="#TypeAnnotator-358"><span class="linenos">358</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_args</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="TypeAnnotator-359"><a href="#TypeAnnotator-359"><span class="linenos">359</span></a> -</span><span id="TypeAnnotator-360"><a href="#TypeAnnotator-360"><span class="linenos">360</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Condition</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Paren</span><span class="p">):</span> -</span><span id="TypeAnnotator-361"><a href="#TypeAnnotator-361"><span class="linenos">361</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BOOLEAN</span> -</span><span id="TypeAnnotator-362"><a href="#TypeAnnotator-362"><span class="linenos">362</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="TypeAnnotator-363"><a href="#TypeAnnotator-363"><span class="linenos">363</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">type</span> +</span><span id="TypeAnnotator-355"><a href="#TypeAnnotator-355"><span class="linenos">355</span></a> <span class="k">def</span> <span class="nf">_annotate_unary</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> +</span><span id="TypeAnnotator-356"><a href="#TypeAnnotator-356"><span class="linenos">356</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_args</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="TypeAnnotator-357"><a href="#TypeAnnotator-357"><span class="linenos">357</span></a> +</span><span id="TypeAnnotator-358"><a href="#TypeAnnotator-358"><span class="linenos">358</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Condition</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Paren</span><span class="p">):</span> +</span><span id="TypeAnnotator-359"><a href="#TypeAnnotator-359"><span class="linenos">359</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BOOLEAN</span> +</span><span id="TypeAnnotator-360"><a href="#TypeAnnotator-360"><span class="linenos">360</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="TypeAnnotator-361"><a href="#TypeAnnotator-361"><span class="linenos">361</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">type</span> +</span><span id="TypeAnnotator-362"><a href="#TypeAnnotator-362"><span class="linenos">362</span></a> +</span><span id="TypeAnnotator-363"><a href="#TypeAnnotator-363"><span class="linenos">363</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="TypeAnnotator-364"><a href="#TypeAnnotator-364"><span class="linenos">364</span></a> -</span><span id="TypeAnnotator-365"><a href="#TypeAnnotator-365"><span class="linenos">365</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="TypeAnnotator-366"><a href="#TypeAnnotator-366"><span class="linenos">366</span></a> -</span><span id="TypeAnnotator-367"><a href="#TypeAnnotator-367"><span class="linenos">367</span></a> <span class="k">def</span> <span class="nf">_annotate_literal</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> -</span><span id="TypeAnnotator-368"><a href="#TypeAnnotator-368"><span class="linenos">368</span></a> <span class="k">if</span> <span class="n">expression</span><span class="o">.</span><span class="n">is_string</span><span class="p">:</span> -</span><span id="TypeAnnotator-369"><a href="#TypeAnnotator-369"><span class="linenos">369</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span> -</span><span id="TypeAnnotator-370"><a href="#TypeAnnotator-370"><span class="linenos">370</span></a> <span class="k">elif</span> <span class="n">expression</span><span class="o">.</span><span class="n">is_int</span><span class="p">:</span> -</span><span id="TypeAnnotator-371"><a href="#TypeAnnotator-371"><span class="linenos">371</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span> -</span><span id="TypeAnnotator-372"><a href="#TypeAnnotator-372"><span class="linenos">372</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="TypeAnnotator-373"><a href="#TypeAnnotator-373"><span class="linenos">373</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span> +</span><span id="TypeAnnotator-365"><a href="#TypeAnnotator-365"><span class="linenos">365</span></a> <span class="k">def</span> <span class="nf">_annotate_literal</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> +</span><span id="TypeAnnotator-366"><a href="#TypeAnnotator-366"><span class="linenos">366</span></a> <span class="k">if</span> <span class="n">expression</span><span class="o">.</span><span class="n">is_string</span><span class="p">:</span> +</span><span id="TypeAnnotator-367"><a href="#TypeAnnotator-367"><span class="linenos">367</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">VARCHAR</span> +</span><span id="TypeAnnotator-368"><a href="#TypeAnnotator-368"><span class="linenos">368</span></a> <span class="k">elif</span> <span class="n">expression</span><span class="o">.</span><span class="n">is_int</span><span class="p">:</span> +</span><span id="TypeAnnotator-369"><a href="#TypeAnnotator-369"><span class="linenos">369</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INT</span> +</span><span id="TypeAnnotator-370"><a href="#TypeAnnotator-370"><span class="linenos">370</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="TypeAnnotator-371"><a href="#TypeAnnotator-371"><span class="linenos">371</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span> +</span><span id="TypeAnnotator-372"><a href="#TypeAnnotator-372"><span class="linenos">372</span></a> +</span><span id="TypeAnnotator-373"><a href="#TypeAnnotator-373"><span class="linenos">373</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="TypeAnnotator-374"><a href="#TypeAnnotator-374"><span class="linenos">374</span></a> -</span><span id="TypeAnnotator-375"><a href="#TypeAnnotator-375"><span class="linenos">375</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="TypeAnnotator-376"><a href="#TypeAnnotator-376"><span class="linenos">376</span></a> -</span><span id="TypeAnnotator-377"><a href="#TypeAnnotator-377"><span class="linenos">377</span></a> <span class="k">def</span> <span class="nf">_annotate_with_type</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">,</span> <span class="n">target_type</span><span class="p">):</span> -</span><span id="TypeAnnotator-378"><a href="#TypeAnnotator-378"><span class="linenos">378</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">target_type</span> -</span><span id="TypeAnnotator-379"><a href="#TypeAnnotator-379"><span class="linenos">379</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_args</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="TypeAnnotator-380"><a href="#TypeAnnotator-380"><span class="linenos">380</span></a> -</span><span id="TypeAnnotator-381"><a href="#TypeAnnotator-381"><span class="linenos">381</span></a> <span class="k">def</span> <span class="nf">_annotate_by_args</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="n">promote</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> -</span><span id="TypeAnnotator-382"><a href="#TypeAnnotator-382"><span class="linenos">382</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_args</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="TypeAnnotator-383"><a href="#TypeAnnotator-383"><span class="linenos">383</span></a> <span class="n">expressions</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="TypeAnnotator-384"><a href="#TypeAnnotator-384"><span class="linenos">384</span></a> <span class="k">for</span> <span class="n">arg</span> <span class="ow">in</span> <span class="n">args</span><span class="p">:</span> -</span><span id="TypeAnnotator-385"><a href="#TypeAnnotator-385"><span class="linenos">385</span></a> <span class="n">arg_expr</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">arg</span><span class="p">)</span> -</span><span id="TypeAnnotator-386"><a href="#TypeAnnotator-386"><span class="linenos">386</span></a> <span class="n">expressions</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">expr</span> <span class="k">for</span> <span class="n">expr</span> <span class="ow">in</span> <span class="n">ensure_list</span><span class="p">(</span><span class="n">arg_expr</span><span class="p">)</span> <span class="k">if</span> <span class="n">expr</span><span class="p">)</span> -</span><span id="TypeAnnotator-387"><a href="#TypeAnnotator-387"><span class="linenos">387</span></a> -</span><span id="TypeAnnotator-388"><a href="#TypeAnnotator-388"><span class="linenos">388</span></a> <span class="n">last_datatype</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="TypeAnnotator-389"><a href="#TypeAnnotator-389"><span class="linenos">389</span></a> <span class="k">for</span> <span class="n">expr</span> <span class="ow">in</span> <span class="n">expressions</span><span class="p">:</span> -</span><span id="TypeAnnotator-390"><a href="#TypeAnnotator-390"><span class="linenos">390</span></a> <span class="n">last_datatype</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_maybe_coerce</span><span class="p">(</span><span class="n">last_datatype</span> <span class="ow">or</span> <span class="n">expr</span><span class="o">.</span><span class="n">type</span><span class="p">,</span> <span class="n">expr</span><span class="o">.</span><span class="n">type</span><span class="p">)</span> +</span><span id="TypeAnnotator-375"><a href="#TypeAnnotator-375"><span class="linenos">375</span></a> <span class="k">def</span> <span class="nf">_annotate_with_type</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">,</span> <span class="n">target_type</span><span class="p">):</span> +</span><span id="TypeAnnotator-376"><a href="#TypeAnnotator-376"><span class="linenos">376</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">target_type</span> +</span><span id="TypeAnnotator-377"><a href="#TypeAnnotator-377"><span class="linenos">377</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_args</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="TypeAnnotator-378"><a href="#TypeAnnotator-378"><span class="linenos">378</span></a> +</span><span id="TypeAnnotator-379"><a href="#TypeAnnotator-379"><span class="linenos">379</span></a> <span class="k">def</span> <span class="nf">_annotate_by_args</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="n">promote</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> +</span><span id="TypeAnnotator-380"><a href="#TypeAnnotator-380"><span class="linenos">380</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_annotate_args</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="TypeAnnotator-381"><a href="#TypeAnnotator-381"><span class="linenos">381</span></a> <span class="n">expressions</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="TypeAnnotator-382"><a href="#TypeAnnotator-382"><span class="linenos">382</span></a> <span class="k">for</span> <span class="n">arg</span> <span class="ow">in</span> <span class="n">args</span><span class="p">:</span> +</span><span id="TypeAnnotator-383"><a href="#TypeAnnotator-383"><span class="linenos">383</span></a> <span class="n">arg_expr</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">arg</span><span class="p">)</span> +</span><span id="TypeAnnotator-384"><a href="#TypeAnnotator-384"><span class="linenos">384</span></a> <span class="n">expressions</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">expr</span> <span class="k">for</span> <span class="n">expr</span> <span class="ow">in</span> <span class="n">ensure_list</span><span class="p">(</span><span class="n">arg_expr</span><span class="p">)</span> <span class="k">if</span> <span class="n">expr</span><span class="p">)</span> +</span><span id="TypeAnnotator-385"><a href="#TypeAnnotator-385"><span class="linenos">385</span></a> +</span><span id="TypeAnnotator-386"><a href="#TypeAnnotator-386"><span class="linenos">386</span></a> <span class="n">last_datatype</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="TypeAnnotator-387"><a href="#TypeAnnotator-387"><span class="linenos">387</span></a> <span class="k">for</span> <span class="n">expr</span> <span class="ow">in</span> <span class="n">expressions</span><span class="p">:</span> +</span><span id="TypeAnnotator-388"><a href="#TypeAnnotator-388"><span class="linenos">388</span></a> <span class="n">last_datatype</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_maybe_coerce</span><span class="p">(</span><span class="n">last_datatype</span> <span class="ow">or</span> <span class="n">expr</span><span class="o">.</span><span class="n">type</span><span class="p">,</span> <span class="n">expr</span><span class="o">.</span><span class="n">type</span><span class="p">)</span> +</span><span id="TypeAnnotator-389"><a href="#TypeAnnotator-389"><span class="linenos">389</span></a> +</span><span id="TypeAnnotator-390"><a href="#TypeAnnotator-390"><span class="linenos">390</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">last_datatype</span> <span class="ow">or</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">UNKNOWN</span> </span><span id="TypeAnnotator-391"><a href="#TypeAnnotator-391"><span class="linenos">391</span></a> -</span><span id="TypeAnnotator-392"><a href="#TypeAnnotator-392"><span class="linenos">392</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">last_datatype</span> <span class="ow">or</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">UNKNOWN</span> -</span><span id="TypeAnnotator-393"><a href="#TypeAnnotator-393"><span class="linenos">393</span></a> -</span><span id="TypeAnnotator-394"><a href="#TypeAnnotator-394"><span class="linenos">394</span></a> <span class="k">if</span> <span class="n">promote</span><span class="p">:</span> -</span><span id="TypeAnnotator-395"><a href="#TypeAnnotator-395"><span class="linenos">395</span></a> <span class="k">if</span> <span class="n">expression</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> <span class="ow">in</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">INTEGER_TYPES</span><span class="p">:</span> -</span><span id="TypeAnnotator-396"><a href="#TypeAnnotator-396"><span class="linenos">396</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BIGINT</span> -</span><span id="TypeAnnotator-397"><a href="#TypeAnnotator-397"><span class="linenos">397</span></a> <span class="k">elif</span> <span class="n">expression</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> <span class="ow">in</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">FLOAT_TYPES</span><span class="p">:</span> -</span><span id="TypeAnnotator-398"><a href="#TypeAnnotator-398"><span class="linenos">398</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span> -</span><span id="TypeAnnotator-399"><a href="#TypeAnnotator-399"><span class="linenos">399</span></a> -</span><span id="TypeAnnotator-400"><a href="#TypeAnnotator-400"><span class="linenos">400</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="TypeAnnotator-392"><a href="#TypeAnnotator-392"><span class="linenos">392</span></a> <span class="k">if</span> <span class="n">promote</span><span class="p">:</span> +</span><span id="TypeAnnotator-393"><a href="#TypeAnnotator-393"><span class="linenos">393</span></a> <span class="k">if</span> <span class="n">expression</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> <span class="ow">in</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">INTEGER_TYPES</span><span class="p">:</span> +</span><span id="TypeAnnotator-394"><a href="#TypeAnnotator-394"><span class="linenos">394</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">BIGINT</span> +</span><span id="TypeAnnotator-395"><a href="#TypeAnnotator-395"><span class="linenos">395</span></a> <span class="k">elif</span> <span class="n">expression</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> <span class="ow">in</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">FLOAT_TYPES</span><span class="p">:</span> +</span><span id="TypeAnnotator-396"><a href="#TypeAnnotator-396"><span class="linenos">396</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DOUBLE</span> +</span><span id="TypeAnnotator-397"><a href="#TypeAnnotator-397"><span class="linenos">397</span></a> +</span><span id="TypeAnnotator-398"><a href="#TypeAnnotator-398"><span class="linenos">398</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -937,10 +933,10 @@ Assumes that we've already executed the optimizer's qualify_columns step.</p> </div> <a class="headerlink" href="#TypeAnnotator.__init__"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="TypeAnnotator.__init__-250"><a href="#TypeAnnotator.__init__-250"><span class="linenos">250</span></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">schema</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">annotators</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">coerces_to</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> -</span><span id="TypeAnnotator.__init__-251"><a href="#TypeAnnotator.__init__-251"><span class="linenos">251</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span> -</span><span id="TypeAnnotator.__init__-252"><a href="#TypeAnnotator.__init__-252"><span class="linenos">252</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">annotators</span> <span class="o">=</span> <span class="n">annotators</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">ANNOTATORS</span> -</span><span id="TypeAnnotator.__init__-253"><a href="#TypeAnnotator.__init__-253"><span class="linenos">253</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">coerces_to</span> <span class="o">=</span> <span class="n">coerces_to</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">COERCES_TO</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="TypeAnnotator.__init__-252"><a href="#TypeAnnotator.__init__-252"><span class="linenos">252</span></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">schema</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">annotators</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">coerces_to</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> +</span><span id="TypeAnnotator.__init__-253"><a href="#TypeAnnotator.__init__-253"><span class="linenos">253</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span> +</span><span id="TypeAnnotator.__init__-254"><a href="#TypeAnnotator.__init__-254"><span class="linenos">254</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">annotators</span> <span class="o">=</span> <span class="n">annotators</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">ANNOTATORS</span> +</span><span id="TypeAnnotator.__init__-255"><a href="#TypeAnnotator.__init__-255"><span class="linenos">255</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">coerces_to</span> <span class="o">=</span> <span class="n">coerces_to</span> <span class="ow">or</span> <span class="bp">self</span><span class="o">.</span><span class="n">COERCES_TO</span> </span></pre></div> @@ -958,49 +954,49 @@ Assumes that we've already executed the optimizer's qualify_columns step.</p> </div> <a class="headerlink" href="#TypeAnnotator.annotate"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="TypeAnnotator.annotate-255"><a href="#TypeAnnotator.annotate-255"><span class="linenos">255</span></a> <span class="k">def</span> <span class="nf">annotate</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> -</span><span id="TypeAnnotator.annotate-256"><a href="#TypeAnnotator.annotate-256"><span class="linenos">256</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">TRAVERSABLES</span><span class="p">):</span> -</span><span id="TypeAnnotator.annotate-257"><a href="#TypeAnnotator.annotate-257"><span class="linenos">257</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="TypeAnnotator.annotate-258"><a href="#TypeAnnotator.annotate-258"><span class="linenos">258</span></a> <span class="n">selects</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="TypeAnnotator.annotate-259"><a href="#TypeAnnotator.annotate-259"><span class="linenos">259</span></a> <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">items</span><span class="p">():</span> -</span><span id="TypeAnnotator.annotate-260"><a href="#TypeAnnotator.annotate-260"><span class="linenos">260</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">):</span> -</span><span id="TypeAnnotator.annotate-261"><a href="#TypeAnnotator.annotate-261"><span class="linenos">261</span></a> <span class="k">continue</span> -</span><span id="TypeAnnotator.annotate-262"><a href="#TypeAnnotator.annotate-262"><span class="linenos">262</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">):</span> -</span><span id="TypeAnnotator.annotate-263"><a href="#TypeAnnotator.annotate-263"><span class="linenos">263</span></a> <span class="n">values</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="TypeAnnotator.annotate-264"><a href="#TypeAnnotator.annotate-264"><span class="linenos">264</span></a> -</span><span id="TypeAnnotator.annotate-265"><a href="#TypeAnnotator.annotate-265"><span class="linenos">265</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Lateral</span><span class="p">):</span> -</span><span id="TypeAnnotator.annotate-266"><a href="#TypeAnnotator.annotate-266"><span class="linenos">266</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Explode</span><span class="p">):</span> -</span><span id="TypeAnnotator.annotate-267"><a href="#TypeAnnotator.annotate-267"><span class="linenos">267</span></a> <span class="n">values</span> <span class="o">=</span> <span class="p">[</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">this</span><span class="p">]</span> -</span><span id="TypeAnnotator.annotate-268"><a href="#TypeAnnotator.annotate-268"><span class="linenos">268</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="TypeAnnotator.annotate-269"><a href="#TypeAnnotator.annotate-269"><span class="linenos">269</span></a> <span class="n">values</span> <span class="o">=</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">expressions</span> -</span><span id="TypeAnnotator.annotate-270"><a href="#TypeAnnotator.annotate-270"><span class="linenos">270</span></a> -</span><span id="TypeAnnotator.annotate-271"><a href="#TypeAnnotator.annotate-271"><span class="linenos">271</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">values</span><span class="p">:</span> -</span><span id="TypeAnnotator.annotate-272"><a href="#TypeAnnotator.annotate-272"><span class="linenos">272</span></a> <span class="k">continue</span> -</span><span id="TypeAnnotator.annotate-273"><a href="#TypeAnnotator.annotate-273"><span class="linenos">273</span></a> -</span><span id="TypeAnnotator.annotate-274"><a href="#TypeAnnotator.annotate-274"><span class="linenos">274</span></a> <span class="n">selects</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="p">{</span> -</span><span id="TypeAnnotator.annotate-275"><a href="#TypeAnnotator.annotate-275"><span class="linenos">275</span></a> <span class="n">alias</span><span class="p">:</span> <span class="n">column</span> -</span><span id="TypeAnnotator.annotate-276"><a href="#TypeAnnotator.annotate-276"><span class="linenos">276</span></a> <span class="k">for</span> <span class="n">alias</span><span class="p">,</span> <span class="n">column</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span> -</span><span id="TypeAnnotator.annotate-277"><a href="#TypeAnnotator.annotate-277"><span class="linenos">277</span></a> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span><span class="p">,</span> -</span><span id="TypeAnnotator.annotate-278"><a href="#TypeAnnotator.annotate-278"><span class="linenos">278</span></a> <span class="n">values</span><span class="p">,</span> -</span><span id="TypeAnnotator.annotate-279"><a href="#TypeAnnotator.annotate-279"><span class="linenos">279</span></a> <span class="p">)</span> -</span><span id="TypeAnnotator.annotate-280"><a href="#TypeAnnotator.annotate-280"><span class="linenos">280</span></a> <span class="p">}</span> -</span><span id="TypeAnnotator.annotate-281"><a href="#TypeAnnotator.annotate-281"><span class="linenos">281</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="TypeAnnotator.annotate-282"><a href="#TypeAnnotator.annotate-282"><span class="linenos">282</span></a> <span class="n">selects</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="p">{</span> -</span><span id="TypeAnnotator.annotate-283"><a href="#TypeAnnotator.annotate-283"><span class="linenos">283</span></a> <span class="n">select</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">:</span> <span class="n">select</span> <span class="k">for</span> <span class="n">select</span> <span class="ow">in</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span> -</span><span id="TypeAnnotator.annotate-284"><a href="#TypeAnnotator.annotate-284"><span class="linenos">284</span></a> <span class="p">}</span> -</span><span id="TypeAnnotator.annotate-285"><a href="#TypeAnnotator.annotate-285"><span class="linenos">285</span></a> <span class="c1"># First annotate the current scope's column references</span> -</span><span id="TypeAnnotator.annotate-286"><a href="#TypeAnnotator.annotate-286"><span class="linenos">286</span></a> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span> -</span><span id="TypeAnnotator.annotate-287"><a href="#TypeAnnotator.annotate-287"><span class="linenos">287</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">:</span> -</span><span id="TypeAnnotator.annotate-288"><a href="#TypeAnnotator.annotate-288"><span class="linenos">288</span></a> <span class="k">continue</span> -</span><span id="TypeAnnotator.annotate-289"><a href="#TypeAnnotator.annotate-289"><span class="linenos">289</span></a> -</span><span id="TypeAnnotator.annotate-290"><a href="#TypeAnnotator.annotate-290"><span class="linenos">290</span></a> <span class="n">source</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">)</span> -</span><span id="TypeAnnotator.annotate-291"><a href="#TypeAnnotator.annotate-291"><span class="linenos">291</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> -</span><span id="TypeAnnotator.annotate-292"><a href="#TypeAnnotator.annotate-292"><span class="linenos">292</span></a> <span class="n">col</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">get_column_type</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">col</span><span class="p">)</span> -</span><span id="TypeAnnotator.annotate-293"><a href="#TypeAnnotator.annotate-293"><span class="linenos">293</span></a> <span class="k">elif</span> <span class="n">source</span> <span class="ow">and</span> <span class="n">col</span><span class="o">.</span><span class="n">table</span> <span class="ow">in</span> <span class="n">selects</span> <span class="ow">and</span> <span class="n">col</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">selects</span><span class="p">[</span><span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">]:</span> -</span><span id="TypeAnnotator.annotate-294"><a href="#TypeAnnotator.annotate-294"><span class="linenos">294</span></a> <span class="n">col</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">selects</span><span class="p">[</span><span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">][</span><span class="n">col</span><span class="o">.</span><span class="n">name</span><span class="p">]</span><span class="o">.</span><span class="n">type</span> -</span><span id="TypeAnnotator.annotate-295"><a href="#TypeAnnotator.annotate-295"><span class="linenos">295</span></a> <span class="c1"># Then (possibly) annotate the remaining expressions in the scope</span> -</span><span id="TypeAnnotator.annotate-296"><a href="#TypeAnnotator.annotate-296"><span class="linenos">296</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_maybe_annotate</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">)</span> -</span><span id="TypeAnnotator.annotate-297"><a href="#TypeAnnotator.annotate-297"><span class="linenos">297</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_maybe_annotate</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> <span class="c1"># This takes care of non-traversable expressions</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="TypeAnnotator.annotate-257"><a href="#TypeAnnotator.annotate-257"><span class="linenos">257</span></a> <span class="k">def</span> <span class="nf">annotate</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">expression</span><span class="p">):</span> +</span><span id="TypeAnnotator.annotate-258"><a href="#TypeAnnotator.annotate-258"><span class="linenos">258</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">TRAVERSABLES</span><span class="p">):</span> +</span><span id="TypeAnnotator.annotate-259"><a href="#TypeAnnotator.annotate-259"><span class="linenos">259</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="TypeAnnotator.annotate-260"><a href="#TypeAnnotator.annotate-260"><span class="linenos">260</span></a> <span class="n">selects</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="TypeAnnotator.annotate-261"><a href="#TypeAnnotator.annotate-261"><span class="linenos">261</span></a> <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">items</span><span class="p">():</span> +</span><span id="TypeAnnotator.annotate-262"><a href="#TypeAnnotator.annotate-262"><span class="linenos">262</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">):</span> +</span><span id="TypeAnnotator.annotate-263"><a href="#TypeAnnotator.annotate-263"><span class="linenos">263</span></a> <span class="k">continue</span> +</span><span id="TypeAnnotator.annotate-264"><a href="#TypeAnnotator.annotate-264"><span class="linenos">264</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">):</span> +</span><span id="TypeAnnotator.annotate-265"><a href="#TypeAnnotator.annotate-265"><span class="linenos">265</span></a> <span class="n">values</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="TypeAnnotator.annotate-266"><a href="#TypeAnnotator.annotate-266"><span class="linenos">266</span></a> +</span><span id="TypeAnnotator.annotate-267"><a href="#TypeAnnotator.annotate-267"><span class="linenos">267</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Lateral</span><span class="p">):</span> +</span><span id="TypeAnnotator.annotate-268"><a href="#TypeAnnotator.annotate-268"><span class="linenos">268</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Explode</span><span class="p">):</span> +</span><span id="TypeAnnotator.annotate-269"><a href="#TypeAnnotator.annotate-269"><span class="linenos">269</span></a> <span class="n">values</span> <span class="o">=</span> <span class="p">[</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">this</span><span class="p">]</span> +</span><span id="TypeAnnotator.annotate-270"><a href="#TypeAnnotator.annotate-270"><span class="linenos">270</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="TypeAnnotator.annotate-271"><a href="#TypeAnnotator.annotate-271"><span class="linenos">271</span></a> <span class="n">values</span> <span class="o">=</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">expressions</span> +</span><span id="TypeAnnotator.annotate-272"><a href="#TypeAnnotator.annotate-272"><span class="linenos">272</span></a> +</span><span id="TypeAnnotator.annotate-273"><a href="#TypeAnnotator.annotate-273"><span class="linenos">273</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">values</span><span class="p">:</span> +</span><span id="TypeAnnotator.annotate-274"><a href="#TypeAnnotator.annotate-274"><span class="linenos">274</span></a> <span class="k">continue</span> +</span><span id="TypeAnnotator.annotate-275"><a href="#TypeAnnotator.annotate-275"><span class="linenos">275</span></a> +</span><span id="TypeAnnotator.annotate-276"><a href="#TypeAnnotator.annotate-276"><span class="linenos">276</span></a> <span class="n">selects</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="p">{</span> +</span><span id="TypeAnnotator.annotate-277"><a href="#TypeAnnotator.annotate-277"><span class="linenos">277</span></a> <span class="n">alias</span><span class="p">:</span> <span class="n">column</span> +</span><span id="TypeAnnotator.annotate-278"><a href="#TypeAnnotator.annotate-278"><span class="linenos">278</span></a> <span class="k">for</span> <span class="n">alias</span><span class="p">,</span> <span class="n">column</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span> +</span><span id="TypeAnnotator.annotate-279"><a href="#TypeAnnotator.annotate-279"><span class="linenos">279</span></a> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span><span class="p">,</span> +</span><span id="TypeAnnotator.annotate-280"><a href="#TypeAnnotator.annotate-280"><span class="linenos">280</span></a> <span class="n">values</span><span class="p">,</span> +</span><span id="TypeAnnotator.annotate-281"><a href="#TypeAnnotator.annotate-281"><span class="linenos">281</span></a> <span class="p">)</span> +</span><span id="TypeAnnotator.annotate-282"><a href="#TypeAnnotator.annotate-282"><span class="linenos">282</span></a> <span class="p">}</span> +</span><span id="TypeAnnotator.annotate-283"><a href="#TypeAnnotator.annotate-283"><span class="linenos">283</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="TypeAnnotator.annotate-284"><a href="#TypeAnnotator.annotate-284"><span class="linenos">284</span></a> <span class="n">selects</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="p">{</span> +</span><span id="TypeAnnotator.annotate-285"><a href="#TypeAnnotator.annotate-285"><span class="linenos">285</span></a> <span class="n">select</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">:</span> <span class="n">select</span> <span class="k">for</span> <span class="n">select</span> <span class="ow">in</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span> +</span><span id="TypeAnnotator.annotate-286"><a href="#TypeAnnotator.annotate-286"><span class="linenos">286</span></a> <span class="p">}</span> +</span><span id="TypeAnnotator.annotate-287"><a href="#TypeAnnotator.annotate-287"><span class="linenos">287</span></a> <span class="c1"># First annotate the current scope's column references</span> +</span><span id="TypeAnnotator.annotate-288"><a href="#TypeAnnotator.annotate-288"><span class="linenos">288</span></a> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span> +</span><span id="TypeAnnotator.annotate-289"><a href="#TypeAnnotator.annotate-289"><span class="linenos">289</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">:</span> +</span><span id="TypeAnnotator.annotate-290"><a href="#TypeAnnotator.annotate-290"><span class="linenos">290</span></a> <span class="k">continue</span> +</span><span id="TypeAnnotator.annotate-291"><a href="#TypeAnnotator.annotate-291"><span class="linenos">291</span></a> +</span><span id="TypeAnnotator.annotate-292"><a href="#TypeAnnotator.annotate-292"><span class="linenos">292</span></a> <span class="n">source</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">)</span> +</span><span id="TypeAnnotator.annotate-293"><a href="#TypeAnnotator.annotate-293"><span class="linenos">293</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> +</span><span id="TypeAnnotator.annotate-294"><a href="#TypeAnnotator.annotate-294"><span class="linenos">294</span></a> <span class="n">col</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">get_column_type</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">col</span><span class="p">)</span> +</span><span id="TypeAnnotator.annotate-295"><a href="#TypeAnnotator.annotate-295"><span class="linenos">295</span></a> <span class="k">elif</span> <span class="n">source</span> <span class="ow">and</span> <span class="n">col</span><span class="o">.</span><span class="n">table</span> <span class="ow">in</span> <span class="n">selects</span> <span class="ow">and</span> <span class="n">col</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">selects</span><span class="p">[</span><span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">]:</span> +</span><span id="TypeAnnotator.annotate-296"><a href="#TypeAnnotator.annotate-296"><span class="linenos">296</span></a> <span class="n">col</span><span class="o">.</span><span class="n">type</span> <span class="o">=</span> <span class="n">selects</span><span class="p">[</span><span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">][</span><span class="n">col</span><span class="o">.</span><span class="n">name</span><span class="p">]</span><span class="o">.</span><span class="n">type</span> +</span><span id="TypeAnnotator.annotate-297"><a href="#TypeAnnotator.annotate-297"><span class="linenos">297</span></a> <span class="c1"># Then (possibly) annotate the remaining expressions in the scope</span> +</span><span id="TypeAnnotator.annotate-298"><a href="#TypeAnnotator.annotate-298"><span class="linenos">298</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_maybe_annotate</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">)</span> +</span><span id="TypeAnnotator.annotate-299"><a href="#TypeAnnotator.annotate-299"><span class="linenos">299</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_maybe_annotate</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> <span class="c1"># This takes care of non-traversable expressions</span> </span></pre></div> diff --git a/docs/sqlglot/optimizer/canonicalize.html b/docs/sqlglot/optimizer/canonicalize.html index 386dfbd..bc73564 100644 --- a/docs/sqlglot/optimizer/canonicalize.html +++ b/docs/sqlglot/optimizer/canonicalize.html @@ -3,7 +3,7 @@ <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> - <meta name="generator" content="pdoc 13.0.0"/> + <meta name="generator" content="pdoc 13.0.1"/> <title>sqlglot.optimizer.canonicalize API documentation</title> <style>/*! * Bootstrap Reboot v5.0.0 (https://getbootstrap.com/) * Copyright 2011-2021 The Bootstrap Authors * Copyright 2011-2021 Twitter, Inc. * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE) * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md) */*,::after,::before{box-sizing:border-box}@media (prefers-reduced-motion:no-preference){:root{scroll-behavior:smooth}}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","Liberation Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";font-size:1rem;font-weight:400;line-height:1.5;color:#212529;background-color:#fff;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}hr{margin:1rem 0;color:inherit;background-color:currentColor;border:0;opacity:.25}hr:not([size]){height:1px}h1,h2,h3,h4,h5,h6{margin-top:0;margin-bottom:.5rem;font-weight:500;line-height:1.2}h1{font-size:calc(1.375rem + 1.5vw)}@media (min-width:1200px){h1{font-size:2.5rem}}h2{font-size:calc(1.325rem + .9vw)}@media (min-width:1200px){h2{font-size:2rem}}h3{font-size:calc(1.3rem + .6vw)}@media (min-width:1200px){h3{font-size:1.75rem}}h4{font-size:calc(1.275rem + .3vw)}@media (min-width:1200px){h4{font-size:1.5rem}}h5{font-size:1.25rem}h6{font-size:1rem}p{margin-top:0;margin-bottom:1rem}abbr[data-bs-original-title],abbr[title]{-webkit-text-decoration:underline dotted;text-decoration:underline dotted;cursor:help;-webkit-text-decoration-skip-ink:none;text-decoration-skip-ink:none}address{margin-bottom:1rem;font-style:normal;line-height:inherit}ol,ul{padding-left:2rem}dl,ol,ul{margin-top:0;margin-bottom:1rem}ol ol,ol ul,ul ol,ul ul{margin-bottom:0}dt{font-weight:700}dd{margin-bottom:.5rem;margin-left:0}blockquote{margin:0 0 1rem}b,strong{font-weight:bolder}small{font-size:.875em}mark{padding:.2em;background-color:#fcf8e3}sub,sup{position:relative;font-size:.75em;line-height:0;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}a{color:#0d6efd;text-decoration:underline}a:hover{color:#0a58ca}a:not([href]):not([class]),a:not([href]):not([class]):hover{color:inherit;text-decoration:none}code,kbd,pre,samp{font-family:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;font-size:1em;direction:ltr;unicode-bidi:bidi-override}pre{display:block;margin-top:0;margin-bottom:1rem;overflow:auto;font-size:.875em}pre code{font-size:inherit;color:inherit;word-break:normal}code{font-size:.875em;color:#d63384;word-wrap:break-word}a>code{color:inherit}kbd{padding:.2rem .4rem;font-size:.875em;color:#fff;background-color:#212529;border-radius:.2rem}kbd kbd{padding:0;font-size:1em;font-weight:700}figure{margin:0 0 1rem}img,svg{vertical-align:middle}table{caption-side:bottom;border-collapse:collapse}caption{padding-top:.5rem;padding-bottom:.5rem;color:#6c757d;text-align:left}th{text-align:inherit;text-align:-webkit-match-parent}tbody,td,tfoot,th,thead,tr{border-color:inherit;border-style:solid;border-width:0}label{display:inline-block}button{border-radius:0}button:focus:not(:focus-visible){outline:0}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,select{text-transform:none}[role=button]{cursor:pointer}select{word-wrap:normal}select:disabled{opacity:1}[list]::-webkit-calendar-picker-indicator{display:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]:not(:disabled),[type=reset]:not(:disabled),[type=submit]:not(:disabled),button:not(:disabled){cursor:pointer}::-moz-focus-inner{padding:0;border-style:none}textarea{resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{float:left;width:100%;padding:0;margin-bottom:.5rem;font-size:calc(1.275rem + .3vw);line-height:inherit}@media (min-width:1200px){legend{font-size:1.5rem}}legend+*{clear:left}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-fields-wrapper,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-text,::-webkit-datetime-edit-year-field{padding:0}::-webkit-inner-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:textfield}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-color-swatch-wrapper{padding:0}::file-selector-button{font:inherit}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}iframe{border:0}summary{display:list-item;cursor:pointer}progress{vertical-align:baseline}[hidden]{display:none!important}</style> @@ -28,8 +28,8 @@ - <h2>API Documentation</h2> - <ul class="memberlist"> + <h2>API Documentation</h2> + <ul class="memberlist"> <li> <a class="function" href="#canonicalize">canonicalize</a> </li> @@ -145,7 +145,7 @@ </span><span id="L-75"><a href="#L-75"><span class="linenos">75</span></a> <span class="n">a</span><span class="o">.</span><span class="n">type</span> </span><span id="L-76"><a href="#L-76"><span class="linenos">76</span></a> <span class="ow">and</span> <span class="n">a</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span> </span><span id="L-77"><a href="#L-77"><span class="linenos">77</span></a> <span class="ow">and</span> <span class="n">b</span><span class="o">.</span><span class="n">type</span> -</span><span id="L-78"><a href="#L-78"><span class="linenos">78</span></a> <span class="ow">and</span> <span class="n">b</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> <span class="o">!=</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span> +</span><span id="L-78"><a href="#L-78"><span class="linenos">78</span></a> <span class="ow">and</span> <span class="n">b</span><span class="o">.</span><span class="n">type</span><span class="o">.</span><span class="n">this</span> <span class="ow">not</span> <span class="ow">in</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">INTERVAL</span><span class="p">)</span> </span><span id="L-79"><a href="#L-79"><span class="linenos">79</span></a> <span class="p">):</span> </span><span id="L-80"><a href="#L-80"><span class="linenos">80</span></a> <span class="n">_replace_cast</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="s2">"date"</span><span class="p">)</span> </span><span id="L-81"><a href="#L-81"><span class="linenos">81</span></a> diff --git a/docs/sqlglot/optimizer/eliminate_ctes.html b/docs/sqlglot/optimizer/eliminate_ctes.html index ed0ddd1..1d1c21e 100644 --- a/docs/sqlglot/optimizer/eliminate_ctes.html +++ b/docs/sqlglot/optimizer/eliminate_ctes.html @@ -3,7 +3,7 @@ <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> - <meta name="generator" content="pdoc 13.0.0"/> + <meta name="generator" content="pdoc 13.0.1"/> <title>sqlglot.optimizer.eliminate_ctes API documentation</title> <style>/*! * Bootstrap Reboot v5.0.0 (https://getbootstrap.com/) * Copyright 2011-2021 The 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1rem}img,svg{vertical-align:middle}table{caption-side:bottom;border-collapse:collapse}caption{padding-top:.5rem;padding-bottom:.5rem;color:#6c757d;text-align:left}th{text-align:inherit;text-align:-webkit-match-parent}tbody,td,tfoot,th,thead,tr{border-color:inherit;border-style:solid;border-width:0}label{display:inline-block}button{border-radius:0}button:focus:not(:focus-visible){outline:0}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,select{text-transform:none}[role=button]{cursor:pointer}select{word-wrap:normal}select:disabled{opacity:1}[list]::-webkit-calendar-picker-indicator{display:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]:not(:disabled),[type=reset]:not(:disabled),[type=submit]:not(:disabled),button:not(:disabled){cursor:pointer}::-moz-focus-inner{padding:0;border-style:none}textarea{resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{float:left;width:100%;padding:0;margin-bottom:.5rem;font-size:calc(1.275rem + .3vw);line-height:inherit}@media (min-width:1200px){legend{font-size:1.5rem}}legend+*{clear:left}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-fields-wrapper,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-text,::-webkit-datetime-edit-year-field{padding:0}::-webkit-inner-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:textfield}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-color-swatch-wrapper{padding:0}::file-selector-button{font:inherit}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}iframe{border:0}summary{display:list-item;cursor:pointer}progress{vertical-align:baseline}[hidden]{display:none!important}</style> @@ -28,8 +28,8 @@ - <h2>API Documentation</h2> - <ul class="memberlist"> + <h2>API Documentation</h2> + <ul class="memberlist"> <li> <a class="function" href="#eliminate_ctes">eliminate_ctes</a> </li> diff --git a/docs/sqlglot/optimizer/eliminate_joins.html b/docs/sqlglot/optimizer/eliminate_joins.html index 8a0f2ff..30ff3d4 100644 --- a/docs/sqlglot/optimizer/eliminate_joins.html +++ b/docs/sqlglot/optimizer/eliminate_joins.html @@ -3,7 +3,7 @@ <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> - <meta name="generator" content="pdoc 13.0.0"/> + <meta name="generator" content="pdoc 13.0.1"/> <title>sqlglot.optimizer.eliminate_joins API documentation</title> <style>/*! * Bootstrap Reboot v5.0.0 (https://getbootstrap.com/) * Copyright 2011-2021 The Bootstrap Authors * Copyright 2011-2021 Twitter, Inc. * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE) * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md) */*,::after,::before{box-sizing:border-box}@media (prefers-reduced-motion:no-preference){:root{scroll-behavior:smooth}}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","Liberation Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";font-size:1rem;font-weight:400;line-height:1.5;color:#212529;background-color:#fff;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}hr{margin:1rem 0;color:inherit;background-color:currentColor;border:0;opacity:.25}hr:not([size]){height:1px}h1,h2,h3,h4,h5,h6{margin-top:0;margin-bottom:.5rem;font-weight:500;line-height:1.2}h1{font-size:calc(1.375rem + 1.5vw)}@media (min-width:1200px){h1{font-size:2.5rem}}h2{font-size:calc(1.325rem + .9vw)}@media (min-width:1200px){h2{font-size:2rem}}h3{font-size:calc(1.3rem + .6vw)}@media (min-width:1200px){h3{font-size:1.75rem}}h4{font-size:calc(1.275rem + .3vw)}@media 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1rem}b,strong{font-weight:bolder}small{font-size:.875em}mark{padding:.2em;background-color:#fcf8e3}sub,sup{position:relative;font-size:.75em;line-height:0;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}a{color:#0d6efd;text-decoration:underline}a:hover{color:#0a58ca}a:not([href]):not([class]),a:not([href]):not([class]):hover{color:inherit;text-decoration:none}code,kbd,pre,samp{font-family:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;font-size:1em;direction:ltr;unicode-bidi:bidi-override}pre{display:block;margin-top:0;margin-bottom:1rem;overflow:auto;font-size:.875em}pre code{font-size:inherit;color:inherit;word-break:normal}code{font-size:.875em;color:#d63384;word-wrap:break-word}a>code{color:inherit}kbd{padding:.2rem .4rem;font-size:.875em;color:#fff;background-color:#212529;border-radius:.2rem}kbd kbd{padding:0;font-size:1em;font-weight:700}figure{margin:0 0 1rem}img,svg{vertical-align:middle}table{caption-side:bottom;border-collapse:collapse}caption{padding-top:.5rem;padding-bottom:.5rem;color:#6c757d;text-align:left}th{text-align:inherit;text-align:-webkit-match-parent}tbody,td,tfoot,th,thead,tr{border-color:inherit;border-style:solid;border-width:0}label{display:inline-block}button{border-radius:0}button:focus:not(:focus-visible){outline:0}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,select{text-transform:none}[role=button]{cursor:pointer}select{word-wrap:normal}select:disabled{opacity:1}[list]::-webkit-calendar-picker-indicator{display:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]:not(:disabled),[type=reset]:not(:disabled),[type=submit]:not(:disabled),button:not(:disabled){cursor:pointer}::-moz-focus-inner{padding:0;border-style:none}textarea{resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{float:left;width:100%;padding:0;margin-bottom:.5rem;font-size:calc(1.275rem + .3vw);line-height:inherit}@media (min-width:1200px){legend{font-size:1.5rem}}legend+*{clear:left}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-fields-wrapper,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-text,::-webkit-datetime-edit-year-field{padding:0}::-webkit-inner-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:textfield}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-color-swatch-wrapper{padding:0}::file-selector-button{font:inherit}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}iframe{border:0}summary{display:list-item;cursor:pointer}progress{vertical-align:baseline}[hidden]{display:none!important}</style> @@ -28,8 +28,8 @@ - <h2>API Documentation</h2> - <ul class="memberlist"> + <h2>API Documentation</h2> + <ul class="memberlist"> <li> <a class="function" href="#eliminate_joins">eliminate_joins</a> </li> @@ -62,187 +62,184 @@ <div class="pdoc-code codehilite"><pre><span></span><span id="L-1"><a href="#L-1"><span class="linenos"> 1</span></a><span class="kn">from</span> <span class="nn">sqlglot</span> <span class="kn">import</span> <span class="n">expressions</span> <span class="k">as</span> <span class="n">exp</span> </span><span id="L-2"><a href="#L-2"><span class="linenos"> 2</span></a><span class="kn">from</span> <span class="nn">sqlglot.optimizer.normalize</span> <span class="kn">import</span> <span class="n">normalized</span> </span><span id="L-3"><a href="#L-3"><span class="linenos"> 3</span></a><span class="kn">from</span> <span class="nn">sqlglot.optimizer.scope</span> <span class="kn">import</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">traverse_scope</span> -</span><span id="L-4"><a href="#L-4"><span class="linenos"> 4</span></a><span class="kn">from</span> <span class="nn">sqlglot.optimizer.simplify</span> <span class="kn">import</span> <span class="n">simplify</span> +</span><span id="L-4"><a href="#L-4"><span class="linenos"> 4</span></a> </span><span id="L-5"><a href="#L-5"><span class="linenos"> 5</span></a> -</span><span id="L-6"><a href="#L-6"><span class="linenos"> 6</span></a> -</span><span id="L-7"><a href="#L-7"><span class="linenos"> 7</span></a><span class="k">def</span> <span class="nf">eliminate_joins</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-8"><a href="#L-8"><span class="linenos"> 8</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-9"><a href="#L-9"><span class="linenos"> 9</span></a><span class="sd"> Remove unused joins from an expression.</span> -</span><span id="L-10"><a href="#L-10"><span class="linenos"> 10</span></a> -</span><span id="L-11"><a href="#L-11"><span class="linenos"> 11</span></a><span class="sd"> This only removes joins when we know that the join condition doesn't produce duplicate rows.</span> -</span><span id="L-12"><a href="#L-12"><span class="linenos"> 12</span></a> -</span><span id="L-13"><a href="#L-13"><span class="linenos"> 13</span></a><span class="sd"> Example:</span> -</span><span id="L-14"><a href="#L-14"><span class="linenos"> 14</span></a><span class="sd"> >>> import sqlglot</span> -</span><span id="L-15"><a href="#L-15"><span class="linenos"> 15</span></a><span class="sd"> >>> sql = "SELECT x.a FROM x LEFT JOIN (SELECT DISTINCT y.b FROM y) AS y ON x.b = y.b"</span> -</span><span id="L-16"><a href="#L-16"><span class="linenos"> 16</span></a><span class="sd"> >>> expression = sqlglot.parse_one(sql)</span> -</span><span id="L-17"><a href="#L-17"><span class="linenos"> 17</span></a><span class="sd"> >>> eliminate_joins(expression).sql()</span> -</span><span id="L-18"><a href="#L-18"><span class="linenos"> 18</span></a><span class="sd"> 'SELECT x.a FROM x'</span> -</span><span id="L-19"><a href="#L-19"><span class="linenos"> 19</span></a> -</span><span id="L-20"><a href="#L-20"><span class="linenos"> 20</span></a><span class="sd"> Args:</span> -</span><span id="L-21"><a href="#L-21"><span class="linenos"> 21</span></a><span class="sd"> expression (sqlglot.Expression): expression to optimize</span> -</span><span id="L-22"><a href="#L-22"><span class="linenos"> 22</span></a><span class="sd"> Returns:</span> -</span><span id="L-23"><a href="#L-23"><span class="linenos"> 23</span></a><span class="sd"> sqlglot.Expression: optimized expression</span> -</span><span id="L-24"><a href="#L-24"><span class="linenos"> 24</span></a><span class="sd"> """</span> -</span><span id="L-25"><a href="#L-25"><span class="linenos"> 25</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-26"><a href="#L-26"><span class="linenos"> 26</span></a> <span class="c1"># If any columns in this scope aren't qualified, it's hard to determine if a join isn't used.</span> -</span><span id="L-27"><a href="#L-27"><span class="linenos"> 27</span></a> <span class="c1"># It's probably possible to infer this from the outputs of derived tables.</span> -</span><span id="L-28"><a href="#L-28"><span class="linenos"> 28</span></a> <span class="c1"># But for now, let's just skip this rule.</span> -</span><span id="L-29"><a href="#L-29"><span class="linenos"> 29</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">unqualified_columns</span><span class="p">:</span> -</span><span id="L-30"><a href="#L-30"><span class="linenos"> 30</span></a> <span class="k">continue</span> -</span><span id="L-31"><a href="#L-31"><span class="linenos"> 31</span></a> -</span><span id="L-32"><a href="#L-32"><span class="linenos"> 32</span></a> <span class="n">joins</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="p">[])</span> -</span><span id="L-33"><a href="#L-33"><span class="linenos"> 33</span></a> -</span><span id="L-34"><a href="#L-34"><span class="linenos"> 34</span></a> <span class="c1"># Reverse the joins so we can remove chains of unused joins</span> -</span><span id="L-35"><a href="#L-35"><span class="linenos"> 35</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="nb">reversed</span><span class="p">(</span><span class="n">joins</span><span class="p">):</span> -</span><span id="L-36"><a href="#L-36"><span class="linenos"> 36</span></a> <span class="n">alias</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">alias_or_name</span> -</span><span id="L-37"><a href="#L-37"><span class="linenos"> 37</span></a> <span class="k">if</span> <span class="n">_should_eliminate_join</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">join</span><span class="p">,</span> <span class="n">alias</span><span class="p">):</span> -</span><span id="L-38"><a href="#L-38"><span class="linenos"> 38</span></a> <span class="n">join</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span> -</span><span id="L-39"><a href="#L-39"><span class="linenos"> 39</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">remove_source</span><span class="p">(</span><span class="n">alias</span><span class="p">)</span> -</span><span id="L-40"><a href="#L-40"><span class="linenos"> 40</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-6"><a href="#L-6"><span class="linenos"> 6</span></a><span class="k">def</span> <span class="nf">eliminate_joins</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-7"><a href="#L-7"><span class="linenos"> 7</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-8"><a href="#L-8"><span class="linenos"> 8</span></a><span class="sd"> Remove unused joins from an expression.</span> +</span><span id="L-9"><a href="#L-9"><span class="linenos"> 9</span></a> +</span><span id="L-10"><a href="#L-10"><span class="linenos"> 10</span></a><span class="sd"> This only removes joins when we know that the join condition doesn't produce duplicate rows.</span> +</span><span id="L-11"><a href="#L-11"><span class="linenos"> 11</span></a> +</span><span id="L-12"><a href="#L-12"><span class="linenos"> 12</span></a><span class="sd"> Example:</span> +</span><span id="L-13"><a href="#L-13"><span class="linenos"> 13</span></a><span class="sd"> >>> import sqlglot</span> +</span><span id="L-14"><a href="#L-14"><span class="linenos"> 14</span></a><span class="sd"> >>> sql = "SELECT x.a FROM x LEFT JOIN (SELECT DISTINCT y.b FROM y) AS y ON x.b = y.b"</span> +</span><span id="L-15"><a href="#L-15"><span class="linenos"> 15</span></a><span class="sd"> >>> expression = sqlglot.parse_one(sql)</span> +</span><span id="L-16"><a href="#L-16"><span class="linenos"> 16</span></a><span class="sd"> >>> eliminate_joins(expression).sql()</span> +</span><span id="L-17"><a href="#L-17"><span class="linenos"> 17</span></a><span class="sd"> 'SELECT x.a FROM x'</span> +</span><span id="L-18"><a href="#L-18"><span class="linenos"> 18</span></a> +</span><span id="L-19"><a href="#L-19"><span class="linenos"> 19</span></a><span class="sd"> Args:</span> +</span><span id="L-20"><a href="#L-20"><span class="linenos"> 20</span></a><span class="sd"> expression (sqlglot.Expression): expression to optimize</span> +</span><span id="L-21"><a href="#L-21"><span class="linenos"> 21</span></a><span class="sd"> Returns:</span> +</span><span id="L-22"><a href="#L-22"><span class="linenos"> 22</span></a><span class="sd"> sqlglot.Expression: optimized expression</span> +</span><span id="L-23"><a href="#L-23"><span class="linenos"> 23</span></a><span class="sd"> """</span> +</span><span id="L-24"><a href="#L-24"><span class="linenos"> 24</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-25"><a href="#L-25"><span class="linenos"> 25</span></a> <span class="c1"># If any columns in this scope aren't qualified, it's hard to determine if a join isn't used.</span> +</span><span id="L-26"><a href="#L-26"><span class="linenos"> 26</span></a> <span class="c1"># It's probably possible to infer this from the outputs of derived tables.</span> +</span><span id="L-27"><a href="#L-27"><span class="linenos"> 27</span></a> <span class="c1"># But for now, let's just skip this rule.</span> +</span><span id="L-28"><a href="#L-28"><span class="linenos"> 28</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">unqualified_columns</span><span class="p">:</span> +</span><span id="L-29"><a href="#L-29"><span class="linenos"> 29</span></a> <span class="k">continue</span> +</span><span id="L-30"><a href="#L-30"><span class="linenos"> 30</span></a> +</span><span id="L-31"><a href="#L-31"><span class="linenos"> 31</span></a> <span class="n">joins</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="p">[])</span> +</span><span id="L-32"><a href="#L-32"><span class="linenos"> 32</span></a> +</span><span id="L-33"><a href="#L-33"><span class="linenos"> 33</span></a> <span class="c1"># Reverse the joins so we can remove chains of unused joins</span> +</span><span id="L-34"><a href="#L-34"><span class="linenos"> 34</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="nb">reversed</span><span class="p">(</span><span class="n">joins</span><span class="p">):</span> +</span><span id="L-35"><a href="#L-35"><span class="linenos"> 35</span></a> <span class="n">alias</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">alias_or_name</span> +</span><span id="L-36"><a href="#L-36"><span class="linenos"> 36</span></a> <span class="k">if</span> <span class="n">_should_eliminate_join</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">join</span><span class="p">,</span> <span class="n">alias</span><span class="p">):</span> +</span><span id="L-37"><a href="#L-37"><span class="linenos"> 37</span></a> <span class="n">join</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span> +</span><span id="L-38"><a href="#L-38"><span class="linenos"> 38</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">remove_source</span><span class="p">(</span><span class="n">alias</span><span class="p">)</span> +</span><span id="L-39"><a href="#L-39"><span class="linenos"> 39</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-40"><a href="#L-40"><span class="linenos"> 40</span></a> </span><span id="L-41"><a href="#L-41"><span class="linenos"> 41</span></a> -</span><span id="L-42"><a href="#L-42"><span class="linenos"> 42</span></a> -</span><span id="L-43"><a href="#L-43"><span class="linenos"> 43</span></a><span class="k">def</span> <span class="nf">_should_eliminate_join</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">join</span><span class="p">,</span> <span class="n">alias</span><span class="p">):</span> -</span><span id="L-44"><a href="#L-44"><span class="linenos"> 44</span></a> <span class="n">inner_source</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">alias</span><span class="p">)</span> -</span><span id="L-45"><a href="#L-45"><span class="linenos"> 45</span></a> <span class="k">return</span> <span class="p">(</span> -</span><span id="L-46"><a href="#L-46"><span class="linenos"> 46</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">inner_source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> -</span><span id="L-47"><a href="#L-47"><span class="linenos"> 47</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="n">_join_is_used</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">join</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> -</span><span id="L-48"><a href="#L-48"><span class="linenos"> 48</span></a> <span class="ow">and</span> <span class="p">(</span> -</span><span id="L-49"><a href="#L-49"><span class="linenos"> 49</span></a> <span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">side</span> <span class="o">==</span> <span class="s2">"LEFT"</span> <span class="ow">and</span> <span class="n">_is_joined_on_all_unique_outputs</span><span class="p">(</span><span class="n">inner_source</span><span class="p">,</span> <span class="n">join</span><span class="p">))</span> -</span><span id="L-50"><a href="#L-50"><span class="linenos"> 50</span></a> <span class="ow">or</span> <span class="p">(</span><span class="ow">not</span> <span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on"</span><span class="p">)</span> <span class="ow">and</span> <span class="n">_has_single_output_row</span><span class="p">(</span><span class="n">inner_source</span><span class="p">))</span> -</span><span id="L-51"><a href="#L-51"><span class="linenos"> 51</span></a> <span class="p">)</span> -</span><span id="L-52"><a href="#L-52"><span class="linenos"> 52</span></a> <span class="p">)</span> +</span><span id="L-42"><a href="#L-42"><span class="linenos"> 42</span></a><span class="k">def</span> <span class="nf">_should_eliminate_join</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">join</span><span class="p">,</span> <span class="n">alias</span><span class="p">):</span> +</span><span id="L-43"><a href="#L-43"><span class="linenos"> 43</span></a> <span class="n">inner_source</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">alias</span><span class="p">)</span> +</span><span id="L-44"><a href="#L-44"><span class="linenos"> 44</span></a> <span class="k">return</span> <span class="p">(</span> +</span><span id="L-45"><a href="#L-45"><span class="linenos"> 45</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">inner_source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> +</span><span id="L-46"><a href="#L-46"><span class="linenos"> 46</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="n">_join_is_used</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">join</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> +</span><span id="L-47"><a href="#L-47"><span class="linenos"> 47</span></a> <span class="ow">and</span> <span class="p">(</span> +</span><span id="L-48"><a href="#L-48"><span class="linenos"> 48</span></a> <span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">side</span> <span class="o">==</span> <span class="s2">"LEFT"</span> <span class="ow">and</span> <span class="n">_is_joined_on_all_unique_outputs</span><span class="p">(</span><span class="n">inner_source</span><span class="p">,</span> <span class="n">join</span><span class="p">))</span> +</span><span id="L-49"><a href="#L-49"><span class="linenos"> 49</span></a> <span class="ow">or</span> <span class="p">(</span><span class="ow">not</span> <span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on"</span><span class="p">)</span> <span class="ow">and</span> <span class="n">_has_single_output_row</span><span class="p">(</span><span class="n">inner_source</span><span class="p">))</span> +</span><span id="L-50"><a href="#L-50"><span class="linenos"> 50</span></a> <span class="p">)</span> +</span><span id="L-51"><a href="#L-51"><span class="linenos"> 51</span></a> <span class="p">)</span> +</span><span id="L-52"><a href="#L-52"><span class="linenos"> 52</span></a> </span><span id="L-53"><a href="#L-53"><span class="linenos"> 53</span></a> -</span><span id="L-54"><a href="#L-54"><span class="linenos"> 54</span></a> -</span><span id="L-55"><a href="#L-55"><span class="linenos"> 55</span></a><span class="k">def</span> <span class="nf">_join_is_used</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">join</span><span class="p">,</span> <span class="n">alias</span><span class="p">):</span> -</span><span id="L-56"><a href="#L-56"><span class="linenos"> 56</span></a> <span class="c1"># We need to find all columns that reference this join.</span> -</span><span id="L-57"><a href="#L-57"><span class="linenos"> 57</span></a> <span class="c1"># But columns in the ON clause shouldn't count.</span> -</span><span id="L-58"><a href="#L-58"><span class="linenos"> 58</span></a> <span class="n">on</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on"</span><span class="p">)</span> -</span><span id="L-59"><a href="#L-59"><span class="linenos"> 59</span></a> <span class="k">if</span> <span class="n">on</span><span class="p">:</span> -</span><span id="L-60"><a href="#L-60"><span class="linenos"> 60</span></a> <span class="n">on_clause_columns</span> <span class="o">=</span> <span class="p">{</span><span class="nb">id</span><span class="p">(</span><span class="n">column</span><span class="p">)</span> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">on</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">)}</span> -</span><span id="L-61"><a href="#L-61"><span class="linenos"> 61</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-62"><a href="#L-62"><span class="linenos"> 62</span></a> <span class="n">on_clause_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span> -</span><span id="L-63"><a href="#L-63"><span class="linenos"> 63</span></a> <span class="k">return</span> <span class="nb">any</span><span class="p">(</span> -</span><span id="L-64"><a href="#L-64"><span class="linenos"> 64</span></a> <span class="n">column</span> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">source_columns</span><span class="p">(</span><span class="n">alias</span><span class="p">)</span> <span class="k">if</span> <span class="nb">id</span><span class="p">(</span><span class="n">column</span><span class="p">)</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">on_clause_columns</span> -</span><span id="L-65"><a href="#L-65"><span class="linenos"> 65</span></a> <span class="p">)</span> +</span><span id="L-54"><a href="#L-54"><span class="linenos"> 54</span></a><span class="k">def</span> <span class="nf">_join_is_used</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">join</span><span class="p">,</span> <span class="n">alias</span><span class="p">):</span> +</span><span id="L-55"><a href="#L-55"><span class="linenos"> 55</span></a> <span class="c1"># We need to find all columns that reference this join.</span> +</span><span id="L-56"><a href="#L-56"><span class="linenos"> 56</span></a> <span class="c1"># But columns in the ON clause shouldn't count.</span> +</span><span id="L-57"><a href="#L-57"><span class="linenos"> 57</span></a> <span class="n">on</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on"</span><span class="p">)</span> +</span><span id="L-58"><a href="#L-58"><span class="linenos"> 58</span></a> <span class="k">if</span> <span class="n">on</span><span class="p">:</span> +</span><span id="L-59"><a href="#L-59"><span class="linenos"> 59</span></a> <span class="n">on_clause_columns</span> <span class="o">=</span> <span class="p">{</span><span class="nb">id</span><span class="p">(</span><span class="n">column</span><span class="p">)</span> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">on</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">)}</span> +</span><span id="L-60"><a href="#L-60"><span class="linenos"> 60</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-61"><a href="#L-61"><span class="linenos"> 61</span></a> <span class="n">on_clause_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span> +</span><span id="L-62"><a href="#L-62"><span class="linenos"> 62</span></a> <span class="k">return</span> <span class="nb">any</span><span class="p">(</span> +</span><span id="L-63"><a href="#L-63"><span class="linenos"> 63</span></a> <span class="n">column</span> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">source_columns</span><span class="p">(</span><span class="n">alias</span><span class="p">)</span> <span class="k">if</span> <span class="nb">id</span><span class="p">(</span><span class="n">column</span><span class="p">)</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">on_clause_columns</span> +</span><span id="L-64"><a href="#L-64"><span class="linenos"> 64</span></a> <span class="p">)</span> +</span><span id="L-65"><a href="#L-65"><span class="linenos"> 65</span></a> </span><span id="L-66"><a href="#L-66"><span class="linenos"> 66</span></a> -</span><span id="L-67"><a href="#L-67"><span class="linenos"> 67</span></a> -</span><span id="L-68"><a href="#L-68"><span class="linenos"> 68</span></a><span class="k">def</span> <span class="nf">_is_joined_on_all_unique_outputs</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">join</span><span class="p">):</span> -</span><span id="L-69"><a href="#L-69"><span class="linenos"> 69</span></a> <span class="n">unique_outputs</span> <span class="o">=</span> <span class="n">_unique_outputs</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> -</span><span id="L-70"><a href="#L-70"><span class="linenos"> 70</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">unique_outputs</span><span class="p">:</span> -</span><span id="L-71"><a href="#L-71"><span class="linenos"> 71</span></a> <span class="k">return</span> <span class="kc">False</span> -</span><span id="L-72"><a href="#L-72"><span class="linenos"> 72</span></a> -</span><span id="L-73"><a href="#L-73"><span class="linenos"> 73</span></a> <span class="n">_</span><span class="p">,</span> <span class="n">join_keys</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="n">join_condition</span><span class="p">(</span><span class="n">join</span><span class="p">)</span> -</span><span id="L-74"><a href="#L-74"><span class="linenos"> 74</span></a> <span class="n">remaining_unique_outputs</span> <span class="o">=</span> <span class="n">unique_outputs</span> <span class="o">-</span> <span class="p">{</span><span class="n">c</span><span class="o">.</span><span class="n">name</span> <span class="k">for</span> <span class="n">c</span> <span class="ow">in</span> <span class="n">join_keys</span><span class="p">}</span> -</span><span id="L-75"><a href="#L-75"><span class="linenos"> 75</span></a> <span class="k">return</span> <span class="ow">not</span> <span class="n">remaining_unique_outputs</span> +</span><span id="L-67"><a href="#L-67"><span class="linenos"> 67</span></a><span class="k">def</span> <span class="nf">_is_joined_on_all_unique_outputs</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">join</span><span class="p">):</span> +</span><span id="L-68"><a href="#L-68"><span class="linenos"> 68</span></a> <span class="n">unique_outputs</span> <span class="o">=</span> <span class="n">_unique_outputs</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> +</span><span id="L-69"><a href="#L-69"><span class="linenos"> 69</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">unique_outputs</span><span class="p">:</span> +</span><span id="L-70"><a href="#L-70"><span class="linenos"> 70</span></a> <span class="k">return</span> <span class="kc">False</span> +</span><span id="L-71"><a href="#L-71"><span class="linenos"> 71</span></a> +</span><span id="L-72"><a href="#L-72"><span class="linenos"> 72</span></a> <span class="n">_</span><span class="p">,</span> <span class="n">join_keys</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="n">join_condition</span><span class="p">(</span><span class="n">join</span><span class="p">)</span> +</span><span id="L-73"><a href="#L-73"><span class="linenos"> 73</span></a> <span class="n">remaining_unique_outputs</span> <span class="o">=</span> <span class="n">unique_outputs</span> <span class="o">-</span> <span class="p">{</span><span class="n">c</span><span class="o">.</span><span class="n">name</span> <span class="k">for</span> <span class="n">c</span> <span class="ow">in</span> <span class="n">join_keys</span><span class="p">}</span> +</span><span id="L-74"><a href="#L-74"><span class="linenos"> 74</span></a> <span class="k">return</span> <span class="ow">not</span> <span class="n">remaining_unique_outputs</span> +</span><span id="L-75"><a href="#L-75"><span class="linenos"> 75</span></a> </span><span id="L-76"><a href="#L-76"><span class="linenos"> 76</span></a> -</span><span id="L-77"><a href="#L-77"><span class="linenos"> 77</span></a> -</span><span id="L-78"><a href="#L-78"><span class="linenos"> 78</span></a><span class="k">def</span> <span class="nf">_unique_outputs</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> -</span><span id="L-79"><a href="#L-79"><span class="linenos"> 79</span></a><span class="w"> </span><span class="sd">"""Determine output columns of `scope` that must have a unique combination per row"""</span> -</span><span id="L-80"><a href="#L-80"><span class="linenos"> 80</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"distinct"</span><span class="p">):</span> -</span><span id="L-81"><a href="#L-81"><span class="linenos"> 81</span></a> <span class="k">return</span> <span class="nb">set</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">named_selects</span><span class="p">)</span> -</span><span id="L-82"><a href="#L-82"><span class="linenos"> 82</span></a> -</span><span id="L-83"><a href="#L-83"><span class="linenos"> 83</span></a> <span class="n">group</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"group"</span><span class="p">)</span> -</span><span id="L-84"><a href="#L-84"><span class="linenos"> 84</span></a> <span class="k">if</span> <span class="n">group</span><span class="p">:</span> -</span><span id="L-85"><a href="#L-85"><span class="linenos"> 85</span></a> <span class="n">grouped_expressions</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">group</span><span class="o">.</span><span class="n">expressions</span><span class="p">)</span> -</span><span id="L-86"><a href="#L-86"><span class="linenos"> 86</span></a> <span class="n">grouped_outputs</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span> -</span><span id="L-87"><a href="#L-87"><span class="linenos"> 87</span></a> -</span><span id="L-88"><a href="#L-88"><span class="linenos"> 88</span></a> <span class="n">unique_outputs</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span> -</span><span id="L-89"><a href="#L-89"><span class="linenos"> 89</span></a> <span class="k">for</span> <span class="n">select</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selects</span><span class="p">:</span> -</span><span id="L-90"><a href="#L-90"><span class="linenos"> 90</span></a> <span class="n">output</span> <span class="o">=</span> <span class="n">select</span><span class="o">.</span><span class="n">unalias</span><span class="p">()</span> -</span><span id="L-91"><a href="#L-91"><span class="linenos"> 91</span></a> <span class="k">if</span> <span class="n">output</span> <span class="ow">in</span> <span class="n">grouped_expressions</span><span class="p">:</span> -</span><span id="L-92"><a href="#L-92"><span class="linenos"> 92</span></a> <span class="n">grouped_outputs</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">output</span><span class="p">)</span> -</span><span id="L-93"><a href="#L-93"><span class="linenos"> 93</span></a> <span class="n">unique_outputs</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">select</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">)</span> -</span><span id="L-94"><a href="#L-94"><span class="linenos"> 94</span></a> -</span><span id="L-95"><a href="#L-95"><span class="linenos"> 95</span></a> <span class="c1"># All the grouped expressions must be in the output</span> -</span><span id="L-96"><a href="#L-96"><span class="linenos"> 96</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">grouped_expressions</span><span class="o">.</span><span class="n">difference</span><span class="p">(</span><span class="n">grouped_outputs</span><span class="p">):</span> -</span><span id="L-97"><a href="#L-97"><span class="linenos"> 97</span></a> <span class="k">return</span> <span class="n">unique_outputs</span> -</span><span id="L-98"><a href="#L-98"><span class="linenos"> 98</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-99"><a href="#L-99"><span class="linenos"> 99</span></a> <span class="k">return</span> <span class="nb">set</span><span class="p">()</span> -</span><span id="L-100"><a href="#L-100"><span class="linenos">100</span></a> -</span><span id="L-101"><a href="#L-101"><span class="linenos">101</span></a> <span class="k">if</span> <span class="n">_has_single_output_row</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> -</span><span id="L-102"><a href="#L-102"><span class="linenos">102</span></a> <span class="k">return</span> <span class="nb">set</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">named_selects</span><span class="p">)</span> -</span><span id="L-103"><a href="#L-103"><span class="linenos">103</span></a> -</span><span id="L-104"><a href="#L-104"><span class="linenos">104</span></a> <span class="k">return</span> <span class="nb">set</span><span class="p">()</span> +</span><span id="L-77"><a href="#L-77"><span class="linenos"> 77</span></a><span class="k">def</span> <span class="nf">_unique_outputs</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> +</span><span id="L-78"><a href="#L-78"><span class="linenos"> 78</span></a><span class="w"> </span><span class="sd">"""Determine output columns of `scope` that must have a unique combination per row"""</span> +</span><span id="L-79"><a href="#L-79"><span class="linenos"> 79</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"distinct"</span><span class="p">):</span> +</span><span id="L-80"><a href="#L-80"><span class="linenos"> 80</span></a> <span class="k">return</span> <span class="nb">set</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">named_selects</span><span class="p">)</span> +</span><span id="L-81"><a href="#L-81"><span class="linenos"> 81</span></a> +</span><span id="L-82"><a href="#L-82"><span class="linenos"> 82</span></a> <span class="n">group</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"group"</span><span class="p">)</span> +</span><span id="L-83"><a href="#L-83"><span class="linenos"> 83</span></a> <span class="k">if</span> <span class="n">group</span><span class="p">:</span> +</span><span id="L-84"><a href="#L-84"><span class="linenos"> 84</span></a> <span class="n">grouped_expressions</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">group</span><span class="o">.</span><span class="n">expressions</span><span class="p">)</span> +</span><span id="L-85"><a href="#L-85"><span class="linenos"> 85</span></a> <span class="n">grouped_outputs</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span> +</span><span id="L-86"><a href="#L-86"><span class="linenos"> 86</span></a> +</span><span id="L-87"><a href="#L-87"><span class="linenos"> 87</span></a> <span class="n">unique_outputs</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span> +</span><span id="L-88"><a href="#L-88"><span class="linenos"> 88</span></a> <span class="k">for</span> <span class="n">select</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selects</span><span class="p">:</span> +</span><span id="L-89"><a href="#L-89"><span class="linenos"> 89</span></a> <span class="n">output</span> <span class="o">=</span> <span class="n">select</span><span class="o">.</span><span class="n">unalias</span><span class="p">()</span> +</span><span id="L-90"><a href="#L-90"><span class="linenos"> 90</span></a> <span class="k">if</span> <span class="n">output</span> <span class="ow">in</span> <span class="n">grouped_expressions</span><span class="p">:</span> +</span><span id="L-91"><a href="#L-91"><span class="linenos"> 91</span></a> <span class="n">grouped_outputs</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">output</span><span class="p">)</span> +</span><span id="L-92"><a href="#L-92"><span class="linenos"> 92</span></a> <span class="n">unique_outputs</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">select</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">)</span> +</span><span id="L-93"><a href="#L-93"><span class="linenos"> 93</span></a> +</span><span id="L-94"><a href="#L-94"><span class="linenos"> 94</span></a> <span class="c1"># All the grouped expressions must be in the output</span> +</span><span id="L-95"><a href="#L-95"><span class="linenos"> 95</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">grouped_expressions</span><span class="o">.</span><span class="n">difference</span><span class="p">(</span><span class="n">grouped_outputs</span><span class="p">):</span> +</span><span id="L-96"><a href="#L-96"><span class="linenos"> 96</span></a> <span class="k">return</span> <span class="n">unique_outputs</span> +</span><span id="L-97"><a href="#L-97"><span class="linenos"> 97</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-98"><a href="#L-98"><span class="linenos"> 98</span></a> <span class="k">return</span> <span class="nb">set</span><span class="p">()</span> +</span><span id="L-99"><a href="#L-99"><span class="linenos"> 99</span></a> +</span><span id="L-100"><a href="#L-100"><span class="linenos">100</span></a> <span class="k">if</span> <span class="n">_has_single_output_row</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> +</span><span id="L-101"><a href="#L-101"><span class="linenos">101</span></a> <span class="k">return</span> <span class="nb">set</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">named_selects</span><span class="p">)</span> +</span><span id="L-102"><a href="#L-102"><span class="linenos">102</span></a> +</span><span id="L-103"><a href="#L-103"><span class="linenos">103</span></a> <span class="k">return</span> <span class="nb">set</span><span class="p">()</span> +</span><span id="L-104"><a href="#L-104"><span class="linenos">104</span></a> </span><span id="L-105"><a href="#L-105"><span class="linenos">105</span></a> -</span><span id="L-106"><a href="#L-106"><span class="linenos">106</span></a> -</span><span id="L-107"><a href="#L-107"><span class="linenos">107</span></a><span class="k">def</span> <span class="nf">_has_single_output_row</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> -</span><span id="L-108"><a href="#L-108"><span class="linenos">108</span></a> <span class="k">return</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span> -</span><span id="L-109"><a href="#L-109"><span class="linenos">109</span></a> <span class="nb">all</span><span class="p">(</span><span class="nb">isinstance</span><span class="p">(</span><span class="n">e</span><span class="o">.</span><span class="n">unalias</span><span class="p">(),</span> <span class="n">exp</span><span class="o">.</span><span class="n">AggFunc</span><span class="p">)</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selects</span><span class="p">)</span> -</span><span id="L-110"><a href="#L-110"><span class="linenos">110</span></a> <span class="ow">or</span> <span class="n">_is_limit_1</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> -</span><span id="L-111"><a href="#L-111"><span class="linenos">111</span></a> <span class="ow">or</span> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"from"</span><span class="p">)</span> -</span><span id="L-112"><a href="#L-112"><span class="linenos">112</span></a> <span class="p">)</span> +</span><span id="L-106"><a href="#L-106"><span class="linenos">106</span></a><span class="k">def</span> <span class="nf">_has_single_output_row</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> +</span><span id="L-107"><a href="#L-107"><span class="linenos">107</span></a> <span class="k">return</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span> +</span><span id="L-108"><a href="#L-108"><span class="linenos">108</span></a> <span class="nb">all</span><span class="p">(</span><span class="nb">isinstance</span><span class="p">(</span><span class="n">e</span><span class="o">.</span><span class="n">unalias</span><span class="p">(),</span> <span class="n">exp</span><span class="o">.</span><span class="n">AggFunc</span><span class="p">)</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selects</span><span class="p">)</span> +</span><span id="L-109"><a href="#L-109"><span class="linenos">109</span></a> <span class="ow">or</span> <span class="n">_is_limit_1</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> +</span><span id="L-110"><a href="#L-110"><span class="linenos">110</span></a> <span class="ow">or</span> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"from"</span><span class="p">)</span> +</span><span id="L-111"><a href="#L-111"><span class="linenos">111</span></a> <span class="p">)</span> +</span><span id="L-112"><a href="#L-112"><span class="linenos">112</span></a> </span><span id="L-113"><a href="#L-113"><span class="linenos">113</span></a> -</span><span id="L-114"><a href="#L-114"><span class="linenos">114</span></a> -</span><span id="L-115"><a href="#L-115"><span class="linenos">115</span></a><span class="k">def</span> <span class="nf">_is_limit_1</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> -</span><span id="L-116"><a href="#L-116"><span class="linenos">116</span></a> <span class="n">limit</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"limit"</span><span class="p">)</span> -</span><span id="L-117"><a href="#L-117"><span class="linenos">117</span></a> <span class="k">return</span> <span class="n">limit</span> <span class="ow">and</span> <span class="n">limit</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="s2">"1"</span> +</span><span id="L-114"><a href="#L-114"><span class="linenos">114</span></a><span class="k">def</span> <span class="nf">_is_limit_1</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> +</span><span id="L-115"><a href="#L-115"><span class="linenos">115</span></a> <span class="n">limit</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"limit"</span><span class="p">)</span> +</span><span id="L-116"><a href="#L-116"><span class="linenos">116</span></a> <span class="k">return</span> <span class="n">limit</span> <span class="ow">and</span> <span class="n">limit</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="s2">"1"</span> +</span><span id="L-117"><a href="#L-117"><span class="linenos">117</span></a> </span><span id="L-118"><a href="#L-118"><span class="linenos">118</span></a> -</span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a> -</span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a><span class="k">def</span> <span class="nf">join_condition</span><span class="p">(</span><span class="n">join</span><span class="p">):</span> -</span><span id="L-121"><a href="#L-121"><span class="linenos">121</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a><span class="sd"> Extract the join condition from a join expression.</span> -</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a> -</span><span id="L-124"><a href="#L-124"><span class="linenos">124</span></a><span class="sd"> Args:</span> -</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a><span class="sd"> join (exp.Join)</span> -</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a><span class="sd"> Returns:</span> -</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a><span class="sd"> tuple[list[str], list[str], exp.Expression]:</span> -</span><span id="L-128"><a href="#L-128"><span class="linenos">128</span></a><span class="sd"> Tuple of (source key, join key, remaining predicate)</span> -</span><span id="L-129"><a href="#L-129"><span class="linenos">129</span></a><span class="sd"> """</span> -</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">alias_or_name</span> -</span><span id="L-131"><a href="#L-131"><span class="linenos">131</span></a> <span class="n">on</span> <span class="o">=</span> <span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on"</span><span class="p">)</span> <span class="ow">or</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span><span class="o">.</span><span class="n">copy</span><span class="p">()</span> -</span><span id="L-132"><a href="#L-132"><span class="linenos">132</span></a> <span class="n">source_key</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-133"><a href="#L-133"><span class="linenos">133</span></a> <span class="n">join_key</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-134"><a href="#L-134"><span class="linenos">134</span></a> -</span><span id="L-135"><a href="#L-135"><span class="linenos">135</span></a> <span class="k">def</span> <span class="nf">extract_condition</span><span class="p">(</span><span class="n">condition</span><span class="p">):</span> -</span><span id="L-136"><a href="#L-136"><span class="linenos">136</span></a> <span class="n">left</span><span class="p">,</span> <span class="n">right</span> <span class="o">=</span> <span class="n">condition</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">()</span> -</span><span id="L-137"><a href="#L-137"><span class="linenos">137</span></a> <span class="n">left_tables</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">column_table_names</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> -</span><span id="L-138"><a href="#L-138"><span class="linenos">138</span></a> <span class="n">right_tables</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">column_table_names</span><span class="p">(</span><span class="n">right</span><span class="p">)</span> -</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a> -</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">left_tables</span> <span class="ow">and</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">right_tables</span><span class="p">:</span> -</span><span id="L-141"><a href="#L-141"><span class="linenos">141</span></a> <span class="n">join_key</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> -</span><span id="L-142"><a href="#L-142"><span class="linenos">142</span></a> <span class="n">source_key</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">right</span><span class="p">)</span> -</span><span id="L-143"><a href="#L-143"><span class="linenos">143</span></a> <span class="n">condition</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span> -</span><span id="L-144"><a href="#L-144"><span class="linenos">144</span></a> <span class="k">elif</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">right_tables</span> <span class="ow">and</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">left_tables</span><span class="p">:</span> -</span><span id="L-145"><a href="#L-145"><span class="linenos">145</span></a> <span class="n">join_key</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">right</span><span class="p">)</span> -</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a> <span class="n">source_key</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> -</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a> <span class="n">condition</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span> -</span><span id="L-148"><a href="#L-148"><span class="linenos">148</span></a> -</span><span id="L-149"><a href="#L-149"><span class="linenos">149</span></a> <span class="c1"># find the join keys</span> -</span><span id="L-150"><a href="#L-150"><span class="linenos">150</span></a> <span class="c1"># SELECT</span> -</span><span id="L-151"><a href="#L-151"><span class="linenos">151</span></a> <span class="c1"># FROM x</span> -</span><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a> <span class="c1"># JOIN y</span> -</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a> <span class="c1"># ON x.a = y.b AND y.b > 1</span> -</span><span id="L-154"><a href="#L-154"><span class="linenos">154</span></a> <span class="c1">#</span> -</span><span id="L-155"><a href="#L-155"><span class="linenos">155</span></a> <span class="c1"># should pull y.b as the join key and x.a as the source key</span> -</span><span id="L-156"><a href="#L-156"><span class="linenos">156</span></a> <span class="k">if</span> <span class="n">normalized</span><span class="p">(</span><span class="n">on</span><span class="p">):</span> -</span><span id="L-157"><a href="#L-157"><span class="linenos">157</span></a> <span class="n">on</span> <span class="o">=</span> <span class="n">on</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">on</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span><span class="n">on</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span> -</span><span id="L-158"><a href="#L-158"><span class="linenos">158</span></a> -</span><span id="L-159"><a href="#L-159"><span class="linenos">159</span></a> <span class="k">for</span> <span class="n">condition</span> <span class="ow">in</span> <span class="n">on</span><span class="o">.</span><span class="n">flatten</span><span class="p">():</span> -</span><span id="L-160"><a href="#L-160"><span class="linenos">160</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">):</span> -</span><span id="L-161"><a href="#L-161"><span class="linenos">161</span></a> <span class="n">extract_condition</span><span class="p">(</span><span class="n">condition</span><span class="p">)</span> -</span><span id="L-162"><a href="#L-162"><span class="linenos">162</span></a> <span class="k">elif</span> <span class="n">normalized</span><span class="p">(</span><span class="n">on</span><span class="p">,</span> <span class="n">dnf</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> -</span><span id="L-163"><a href="#L-163"><span class="linenos">163</span></a> <span class="n">conditions</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-164"><a href="#L-164"><span class="linenos">164</span></a> -</span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a> <span class="k">for</span> <span class="n">condition</span> <span class="ow">in</span> <span class="n">on</span><span class="o">.</span><span class="n">flatten</span><span class="p">():</span> -</span><span id="L-166"><a href="#L-166"><span class="linenos">166</span></a> <span class="n">parts</span> <span class="o">=</span> <span class="p">[</span><span class="n">part</span> <span class="k">for</span> <span class="n">part</span> <span class="ow">in</span> <span class="n">condition</span><span class="o">.</span><span class="n">flatten</span><span class="p">()</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">part</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">)]</span> -</span><span id="L-167"><a href="#L-167"><span class="linenos">167</span></a> <span class="k">if</span> <span class="n">conditions</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> -</span><span id="L-168"><a href="#L-168"><span class="linenos">168</span></a> <span class="n">conditions</span> <span class="o">=</span> <span class="n">parts</span> -</span><span id="L-169"><a href="#L-169"><span class="linenos">169</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-170"><a href="#L-170"><span class="linenos">170</span></a> <span class="n">temp</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-171"><a href="#L-171"><span class="linenos">171</span></a> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">parts</span><span class="p">:</span> -</span><span id="L-172"><a href="#L-172"><span class="linenos">172</span></a> <span class="n">cs</span> <span class="o">=</span> <span class="p">[</span><span class="n">c</span> <span class="k">for</span> <span class="n">c</span> <span class="ow">in</span> <span class="n">conditions</span> <span class="k">if</span> <span class="n">p</span> <span class="o">==</span> <span class="n">c</span><span class="p">]</span> -</span><span id="L-173"><a href="#L-173"><span class="linenos">173</span></a> -</span><span id="L-174"><a href="#L-174"><span class="linenos">174</span></a> <span class="k">if</span> <span class="n">cs</span><span class="p">:</span> -</span><span id="L-175"><a href="#L-175"><span class="linenos">175</span></a> <span class="n">temp</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">p</span><span class="p">)</span> -</span><span id="L-176"><a href="#L-176"><span class="linenos">176</span></a> <span class="n">temp</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">cs</span><span class="p">)</span> -</span><span id="L-177"><a href="#L-177"><span class="linenos">177</span></a> <span class="n">conditions</span> <span class="o">=</span> <span class="n">temp</span> -</span><span id="L-178"><a href="#L-178"><span class="linenos">178</span></a> -</span><span id="L-179"><a href="#L-179"><span class="linenos">179</span></a> <span class="k">for</span> <span class="n">condition</span> <span class="ow">in</span> <span class="n">conditions</span><span class="p">:</span> -</span><span id="L-180"><a href="#L-180"><span class="linenos">180</span></a> <span class="n">extract_condition</span><span class="p">(</span><span class="n">condition</span><span class="p">)</span> -</span><span id="L-181"><a href="#L-181"><span class="linenos">181</span></a> -</span><span id="L-182"><a href="#L-182"><span class="linenos">182</span></a> <span class="n">on</span> <span class="o">=</span> <span class="n">simplify</span><span class="p">(</span><span class="n">on</span><span class="p">)</span> -</span><span id="L-183"><a href="#L-183"><span class="linenos">183</span></a> <span class="n">remaining_condition</span> <span class="o">=</span> <span class="kc">None</span> <span class="k">if</span> <span class="n">on</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">else</span> <span class="n">on</span> -</span><span id="L-184"><a href="#L-184"><span class="linenos">184</span></a> <span class="k">return</span> <span class="n">source_key</span><span class="p">,</span> <span class="n">join_key</span><span class="p">,</span> <span class="n">remaining_condition</span> +</span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a><span class="k">def</span> <span class="nf">join_condition</span><span class="p">(</span><span class="n">join</span><span class="p">):</span> +</span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-121"><a href="#L-121"><span class="linenos">121</span></a><span class="sd"> Extract the join condition from a join expression.</span> +</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a> +</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a><span class="sd"> Args:</span> +</span><span id="L-124"><a href="#L-124"><span class="linenos">124</span></a><span class="sd"> join (exp.Join)</span> +</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a><span class="sd"> Returns:</span> +</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a><span class="sd"> tuple[list[str], list[str], exp.Expression]:</span> +</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a><span class="sd"> Tuple of (source key, join key, remaining predicate)</span> +</span><span id="L-128"><a href="#L-128"><span class="linenos">128</span></a><span class="sd"> """</span> +</span><span id="L-129"><a href="#L-129"><span class="linenos">129</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">alias_or_name</span> +</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a> <span class="n">on</span> <span class="o">=</span> <span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on"</span><span class="p">)</span> <span class="ow">or</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span><span class="o">.</span><span class="n">copy</span><span class="p">()</span> +</span><span id="L-131"><a href="#L-131"><span class="linenos">131</span></a> <span class="n">source_key</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-132"><a href="#L-132"><span class="linenos">132</span></a> <span class="n">join_key</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-133"><a href="#L-133"><span class="linenos">133</span></a> +</span><span id="L-134"><a href="#L-134"><span class="linenos">134</span></a> <span class="k">def</span> <span class="nf">extract_condition</span><span class="p">(</span><span class="n">condition</span><span class="p">):</span> +</span><span id="L-135"><a href="#L-135"><span class="linenos">135</span></a> <span class="n">left</span><span class="p">,</span> <span class="n">right</span> <span class="o">=</span> <span class="n">condition</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">()</span> +</span><span id="L-136"><a href="#L-136"><span class="linenos">136</span></a> <span class="n">left_tables</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">column_table_names</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> +</span><span id="L-137"><a href="#L-137"><span class="linenos">137</span></a> <span class="n">right_tables</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">column_table_names</span><span class="p">(</span><span class="n">right</span><span class="p">)</span> +</span><span id="L-138"><a href="#L-138"><span class="linenos">138</span></a> +</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">left_tables</span> <span class="ow">and</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">right_tables</span><span class="p">:</span> +</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a> <span class="n">join_key</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> +</span><span id="L-141"><a href="#L-141"><span class="linenos">141</span></a> <span class="n">source_key</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">right</span><span class="p">)</span> +</span><span id="L-142"><a href="#L-142"><span class="linenos">142</span></a> <span class="n">condition</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span> +</span><span id="L-143"><a href="#L-143"><span class="linenos">143</span></a> <span class="k">elif</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">right_tables</span> <span class="ow">and</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">left_tables</span><span class="p">:</span> +</span><span id="L-144"><a href="#L-144"><span class="linenos">144</span></a> <span class="n">join_key</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">right</span><span class="p">)</span> +</span><span id="L-145"><a href="#L-145"><span class="linenos">145</span></a> <span class="n">source_key</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> +</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a> <span class="n">condition</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span> +</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a> +</span><span id="L-148"><a href="#L-148"><span class="linenos">148</span></a> <span class="c1"># find the join keys</span> +</span><span id="L-149"><a href="#L-149"><span class="linenos">149</span></a> <span class="c1"># SELECT</span> +</span><span id="L-150"><a href="#L-150"><span class="linenos">150</span></a> <span class="c1"># FROM x</span> +</span><span id="L-151"><a href="#L-151"><span class="linenos">151</span></a> <span class="c1"># JOIN y</span> +</span><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a> <span class="c1"># ON x.a = y.b AND y.b > 1</span> +</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a> <span class="c1">#</span> +</span><span id="L-154"><a href="#L-154"><span class="linenos">154</span></a> <span class="c1"># should pull y.b as the join key and x.a as the source key</span> +</span><span id="L-155"><a href="#L-155"><span class="linenos">155</span></a> <span class="k">if</span> <span class="n">normalized</span><span class="p">(</span><span class="n">on</span><span class="p">):</span> +</span><span id="L-156"><a href="#L-156"><span class="linenos">156</span></a> <span class="n">on</span> <span class="o">=</span> <span class="n">on</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">on</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span><span class="n">on</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span> +</span><span id="L-157"><a href="#L-157"><span class="linenos">157</span></a> +</span><span id="L-158"><a href="#L-158"><span class="linenos">158</span></a> <span class="k">for</span> <span class="n">condition</span> <span class="ow">in</span> <span class="n">on</span><span class="o">.</span><span class="n">flatten</span><span class="p">():</span> +</span><span id="L-159"><a href="#L-159"><span class="linenos">159</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">):</span> +</span><span id="L-160"><a href="#L-160"><span class="linenos">160</span></a> <span class="n">extract_condition</span><span class="p">(</span><span class="n">condition</span><span class="p">)</span> +</span><span id="L-161"><a href="#L-161"><span class="linenos">161</span></a> <span class="k">elif</span> <span class="n">normalized</span><span class="p">(</span><span class="n">on</span><span class="p">,</span> <span class="n">dnf</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> +</span><span id="L-162"><a href="#L-162"><span class="linenos">162</span></a> <span class="n">conditions</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-163"><a href="#L-163"><span class="linenos">163</span></a> +</span><span id="L-164"><a href="#L-164"><span class="linenos">164</span></a> <span class="k">for</span> <span class="n">condition</span> <span class="ow">in</span> <span class="n">on</span><span class="o">.</span><span class="n">flatten</span><span class="p">():</span> +</span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a> <span class="n">parts</span> <span class="o">=</span> <span class="p">[</span><span class="n">part</span> <span class="k">for</span> <span class="n">part</span> <span class="ow">in</span> <span class="n">condition</span><span class="o">.</span><span class="n">flatten</span><span class="p">()</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">part</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">)]</span> +</span><span id="L-166"><a href="#L-166"><span class="linenos">166</span></a> <span class="k">if</span> <span class="n">conditions</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> +</span><span id="L-167"><a href="#L-167"><span class="linenos">167</span></a> <span class="n">conditions</span> <span class="o">=</span> <span class="n">parts</span> +</span><span id="L-168"><a href="#L-168"><span class="linenos">168</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-169"><a href="#L-169"><span class="linenos">169</span></a> <span class="n">temp</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-170"><a href="#L-170"><span class="linenos">170</span></a> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">parts</span><span class="p">:</span> +</span><span id="L-171"><a href="#L-171"><span class="linenos">171</span></a> <span class="n">cs</span> <span class="o">=</span> <span class="p">[</span><span class="n">c</span> <span class="k">for</span> <span class="n">c</span> <span class="ow">in</span> <span class="n">conditions</span> <span class="k">if</span> <span class="n">p</span> <span class="o">==</span> <span class="n">c</span><span class="p">]</span> +</span><span id="L-172"><a href="#L-172"><span class="linenos">172</span></a> +</span><span id="L-173"><a href="#L-173"><span class="linenos">173</span></a> <span class="k">if</span> <span class="n">cs</span><span class="p">:</span> +</span><span id="L-174"><a href="#L-174"><span class="linenos">174</span></a> <span class="n">temp</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">p</span><span class="p">)</span> +</span><span id="L-175"><a href="#L-175"><span class="linenos">175</span></a> <span class="n">temp</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">cs</span><span class="p">)</span> +</span><span id="L-176"><a href="#L-176"><span class="linenos">176</span></a> <span class="n">conditions</span> <span class="o">=</span> <span class="n">temp</span> +</span><span id="L-177"><a href="#L-177"><span class="linenos">177</span></a> +</span><span id="L-178"><a href="#L-178"><span class="linenos">178</span></a> <span class="k">for</span> <span class="n">condition</span> <span class="ow">in</span> <span class="n">conditions</span><span class="p">:</span> +</span><span id="L-179"><a href="#L-179"><span class="linenos">179</span></a> <span class="n">extract_condition</span><span class="p">(</span><span class="n">condition</span><span class="p">)</span> +</span><span id="L-180"><a href="#L-180"><span class="linenos">180</span></a> +</span><span id="L-181"><a href="#L-181"><span class="linenos">181</span></a> <span class="k">return</span> <span class="n">source_key</span><span class="p">,</span> <span class="n">join_key</span><span class="p">,</span> <span class="n">on</span> </span></pre></div> @@ -258,40 +255,40 @@ </div> <a class="headerlink" href="#eliminate_joins"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="eliminate_joins-8"><a href="#eliminate_joins-8"><span class="linenos"> 8</span></a><span class="k">def</span> <span class="nf">eliminate_joins</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="eliminate_joins-9"><a href="#eliminate_joins-9"><span class="linenos"> 9</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="eliminate_joins-10"><a href="#eliminate_joins-10"><span class="linenos">10</span></a><span class="sd"> Remove unused joins from an expression.</span> -</span><span id="eliminate_joins-11"><a href="#eliminate_joins-11"><span class="linenos">11</span></a> -</span><span id="eliminate_joins-12"><a href="#eliminate_joins-12"><span class="linenos">12</span></a><span class="sd"> This only removes joins when we know that the join condition doesn't produce duplicate rows.</span> -</span><span id="eliminate_joins-13"><a href="#eliminate_joins-13"><span class="linenos">13</span></a> -</span><span id="eliminate_joins-14"><a href="#eliminate_joins-14"><span class="linenos">14</span></a><span class="sd"> Example:</span> -</span><span id="eliminate_joins-15"><a href="#eliminate_joins-15"><span class="linenos">15</span></a><span class="sd"> >>> import sqlglot</span> -</span><span id="eliminate_joins-16"><a href="#eliminate_joins-16"><span class="linenos">16</span></a><span class="sd"> >>> sql = "SELECT x.a FROM x LEFT JOIN (SELECT DISTINCT y.b FROM y) AS y ON x.b = y.b"</span> -</span><span id="eliminate_joins-17"><a href="#eliminate_joins-17"><span class="linenos">17</span></a><span class="sd"> >>> expression = sqlglot.parse_one(sql)</span> -</span><span id="eliminate_joins-18"><a href="#eliminate_joins-18"><span class="linenos">18</span></a><span class="sd"> >>> eliminate_joins(expression).sql()</span> -</span><span id="eliminate_joins-19"><a href="#eliminate_joins-19"><span class="linenos">19</span></a><span class="sd"> 'SELECT x.a FROM x'</span> -</span><span id="eliminate_joins-20"><a href="#eliminate_joins-20"><span class="linenos">20</span></a> -</span><span id="eliminate_joins-21"><a href="#eliminate_joins-21"><span class="linenos">21</span></a><span class="sd"> Args:</span> -</span><span id="eliminate_joins-22"><a href="#eliminate_joins-22"><span class="linenos">22</span></a><span class="sd"> expression (sqlglot.Expression): expression to optimize</span> -</span><span id="eliminate_joins-23"><a href="#eliminate_joins-23"><span class="linenos">23</span></a><span class="sd"> Returns:</span> -</span><span id="eliminate_joins-24"><a href="#eliminate_joins-24"><span class="linenos">24</span></a><span class="sd"> sqlglot.Expression: optimized expression</span> -</span><span id="eliminate_joins-25"><a href="#eliminate_joins-25"><span class="linenos">25</span></a><span class="sd"> """</span> -</span><span id="eliminate_joins-26"><a href="#eliminate_joins-26"><span class="linenos">26</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="eliminate_joins-27"><a href="#eliminate_joins-27"><span class="linenos">27</span></a> <span class="c1"># If any columns in this scope aren't qualified, it's hard to determine if a join isn't used.</span> -</span><span id="eliminate_joins-28"><a href="#eliminate_joins-28"><span class="linenos">28</span></a> <span class="c1"># It's probably possible to infer this from the outputs of derived tables.</span> -</span><span id="eliminate_joins-29"><a href="#eliminate_joins-29"><span class="linenos">29</span></a> <span class="c1"># But for now, let's just skip this rule.</span> -</span><span id="eliminate_joins-30"><a href="#eliminate_joins-30"><span class="linenos">30</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">unqualified_columns</span><span class="p">:</span> -</span><span id="eliminate_joins-31"><a href="#eliminate_joins-31"><span class="linenos">31</span></a> <span class="k">continue</span> -</span><span id="eliminate_joins-32"><a href="#eliminate_joins-32"><span class="linenos">32</span></a> -</span><span id="eliminate_joins-33"><a href="#eliminate_joins-33"><span class="linenos">33</span></a> <span class="n">joins</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="p">[])</span> -</span><span id="eliminate_joins-34"><a href="#eliminate_joins-34"><span class="linenos">34</span></a> -</span><span id="eliminate_joins-35"><a href="#eliminate_joins-35"><span class="linenos">35</span></a> <span class="c1"># Reverse the joins so we can remove chains of unused joins</span> -</span><span id="eliminate_joins-36"><a href="#eliminate_joins-36"><span class="linenos">36</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="nb">reversed</span><span class="p">(</span><span class="n">joins</span><span class="p">):</span> -</span><span id="eliminate_joins-37"><a href="#eliminate_joins-37"><span class="linenos">37</span></a> <span class="n">alias</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">alias_or_name</span> -</span><span id="eliminate_joins-38"><a href="#eliminate_joins-38"><span class="linenos">38</span></a> <span class="k">if</span> <span class="n">_should_eliminate_join</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">join</span><span class="p">,</span> <span class="n">alias</span><span class="p">):</span> -</span><span id="eliminate_joins-39"><a href="#eliminate_joins-39"><span class="linenos">39</span></a> <span class="n">join</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span> -</span><span id="eliminate_joins-40"><a href="#eliminate_joins-40"><span class="linenos">40</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">remove_source</span><span class="p">(</span><span class="n">alias</span><span class="p">)</span> -</span><span id="eliminate_joins-41"><a href="#eliminate_joins-41"><span class="linenos">41</span></a> <span class="k">return</span> <span class="n">expression</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="eliminate_joins-7"><a href="#eliminate_joins-7"><span class="linenos"> 7</span></a><span class="k">def</span> <span class="nf">eliminate_joins</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="eliminate_joins-8"><a href="#eliminate_joins-8"><span class="linenos"> 8</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="eliminate_joins-9"><a href="#eliminate_joins-9"><span class="linenos"> 9</span></a><span class="sd"> Remove unused joins from an expression.</span> +</span><span id="eliminate_joins-10"><a href="#eliminate_joins-10"><span class="linenos">10</span></a> +</span><span id="eliminate_joins-11"><a href="#eliminate_joins-11"><span class="linenos">11</span></a><span class="sd"> This only removes joins when we know that the join condition doesn't produce duplicate rows.</span> +</span><span id="eliminate_joins-12"><a href="#eliminate_joins-12"><span class="linenos">12</span></a> +</span><span id="eliminate_joins-13"><a href="#eliminate_joins-13"><span class="linenos">13</span></a><span class="sd"> Example:</span> +</span><span id="eliminate_joins-14"><a href="#eliminate_joins-14"><span class="linenos">14</span></a><span class="sd"> >>> import sqlglot</span> +</span><span id="eliminate_joins-15"><a href="#eliminate_joins-15"><span class="linenos">15</span></a><span class="sd"> >>> sql = "SELECT x.a FROM x LEFT JOIN (SELECT DISTINCT y.b FROM y) AS y ON x.b = y.b"</span> +</span><span id="eliminate_joins-16"><a href="#eliminate_joins-16"><span class="linenos">16</span></a><span class="sd"> >>> expression = sqlglot.parse_one(sql)</span> +</span><span id="eliminate_joins-17"><a href="#eliminate_joins-17"><span class="linenos">17</span></a><span class="sd"> >>> eliminate_joins(expression).sql()</span> +</span><span id="eliminate_joins-18"><a href="#eliminate_joins-18"><span class="linenos">18</span></a><span class="sd"> 'SELECT x.a FROM x'</span> +</span><span id="eliminate_joins-19"><a href="#eliminate_joins-19"><span class="linenos">19</span></a> +</span><span id="eliminate_joins-20"><a href="#eliminate_joins-20"><span class="linenos">20</span></a><span class="sd"> Args:</span> +</span><span id="eliminate_joins-21"><a href="#eliminate_joins-21"><span class="linenos">21</span></a><span class="sd"> expression (sqlglot.Expression): expression to optimize</span> +</span><span id="eliminate_joins-22"><a href="#eliminate_joins-22"><span class="linenos">22</span></a><span class="sd"> Returns:</span> +</span><span id="eliminate_joins-23"><a href="#eliminate_joins-23"><span class="linenos">23</span></a><span class="sd"> sqlglot.Expression: optimized expression</span> +</span><span id="eliminate_joins-24"><a href="#eliminate_joins-24"><span class="linenos">24</span></a><span class="sd"> """</span> +</span><span id="eliminate_joins-25"><a href="#eliminate_joins-25"><span class="linenos">25</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="eliminate_joins-26"><a href="#eliminate_joins-26"><span class="linenos">26</span></a> <span class="c1"># If any columns in this scope aren't qualified, it's hard to determine if a join isn't used.</span> +</span><span id="eliminate_joins-27"><a href="#eliminate_joins-27"><span class="linenos">27</span></a> <span class="c1"># It's probably possible to infer this from the outputs of derived tables.</span> +</span><span id="eliminate_joins-28"><a href="#eliminate_joins-28"><span class="linenos">28</span></a> <span class="c1"># But for now, let's just skip this rule.</span> +</span><span id="eliminate_joins-29"><a href="#eliminate_joins-29"><span class="linenos">29</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">unqualified_columns</span><span class="p">:</span> +</span><span id="eliminate_joins-30"><a href="#eliminate_joins-30"><span class="linenos">30</span></a> <span class="k">continue</span> +</span><span id="eliminate_joins-31"><a href="#eliminate_joins-31"><span class="linenos">31</span></a> +</span><span id="eliminate_joins-32"><a href="#eliminate_joins-32"><span class="linenos">32</span></a> <span class="n">joins</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="p">[])</span> +</span><span id="eliminate_joins-33"><a href="#eliminate_joins-33"><span class="linenos">33</span></a> +</span><span id="eliminate_joins-34"><a href="#eliminate_joins-34"><span class="linenos">34</span></a> <span class="c1"># Reverse the joins so we can remove chains of unused joins</span> +</span><span id="eliminate_joins-35"><a href="#eliminate_joins-35"><span class="linenos">35</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="nb">reversed</span><span class="p">(</span><span class="n">joins</span><span class="p">):</span> +</span><span id="eliminate_joins-36"><a href="#eliminate_joins-36"><span class="linenos">36</span></a> <span class="n">alias</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">alias_or_name</span> +</span><span id="eliminate_joins-37"><a href="#eliminate_joins-37"><span class="linenos">37</span></a> <span class="k">if</span> <span class="n">_should_eliminate_join</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">join</span><span class="p">,</span> <span class="n">alias</span><span class="p">):</span> +</span><span id="eliminate_joins-38"><a href="#eliminate_joins-38"><span class="linenos">38</span></a> <span class="n">join</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span> +</span><span id="eliminate_joins-39"><a href="#eliminate_joins-39"><span class="linenos">39</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">remove_source</span><span class="p">(</span><span class="n">alias</span><span class="p">)</span> +</span><span id="eliminate_joins-40"><a href="#eliminate_joins-40"><span class="linenos">40</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -338,71 +335,69 @@ </div> <a class="headerlink" href="#join_condition"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="join_condition-121"><a href="#join_condition-121"><span class="linenos">121</span></a><span class="k">def</span> <span class="nf">join_condition</span><span class="p">(</span><span class="n">join</span><span class="p">):</span> -</span><span id="join_condition-122"><a href="#join_condition-122"><span class="linenos">122</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="join_condition-123"><a href="#join_condition-123"><span class="linenos">123</span></a><span class="sd"> Extract the join condition from a join expression.</span> -</span><span id="join_condition-124"><a href="#join_condition-124"><span class="linenos">124</span></a> -</span><span id="join_condition-125"><a href="#join_condition-125"><span class="linenos">125</span></a><span class="sd"> Args:</span> -</span><span id="join_condition-126"><a href="#join_condition-126"><span class="linenos">126</span></a><span class="sd"> join (exp.Join)</span> -</span><span id="join_condition-127"><a href="#join_condition-127"><span class="linenos">127</span></a><span class="sd"> Returns:</span> -</span><span id="join_condition-128"><a href="#join_condition-128"><span class="linenos">128</span></a><span class="sd"> tuple[list[str], list[str], exp.Expression]:</span> -</span><span id="join_condition-129"><a href="#join_condition-129"><span class="linenos">129</span></a><span class="sd"> Tuple of (source key, join key, remaining predicate)</span> -</span><span id="join_condition-130"><a href="#join_condition-130"><span class="linenos">130</span></a><span class="sd"> """</span> -</span><span id="join_condition-131"><a href="#join_condition-131"><span class="linenos">131</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">alias_or_name</span> -</span><span id="join_condition-132"><a href="#join_condition-132"><span class="linenos">132</span></a> <span class="n">on</span> <span class="o">=</span> <span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on"</span><span class="p">)</span> <span class="ow">or</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span><span class="o">.</span><span class="n">copy</span><span class="p">()</span> -</span><span id="join_condition-133"><a href="#join_condition-133"><span class="linenos">133</span></a> <span class="n">source_key</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="join_condition-134"><a href="#join_condition-134"><span class="linenos">134</span></a> <span class="n">join_key</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="join_condition-135"><a href="#join_condition-135"><span class="linenos">135</span></a> -</span><span id="join_condition-136"><a href="#join_condition-136"><span class="linenos">136</span></a> <span class="k">def</span> <span class="nf">extract_condition</span><span class="p">(</span><span class="n">condition</span><span class="p">):</span> -</span><span id="join_condition-137"><a href="#join_condition-137"><span class="linenos">137</span></a> <span class="n">left</span><span class="p">,</span> <span class="n">right</span> <span class="o">=</span> <span class="n">condition</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">()</span> -</span><span id="join_condition-138"><a href="#join_condition-138"><span class="linenos">138</span></a> <span class="n">left_tables</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">column_table_names</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> -</span><span id="join_condition-139"><a href="#join_condition-139"><span class="linenos">139</span></a> <span class="n">right_tables</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">column_table_names</span><span class="p">(</span><span class="n">right</span><span class="p">)</span> -</span><span id="join_condition-140"><a href="#join_condition-140"><span class="linenos">140</span></a> -</span><span id="join_condition-141"><a href="#join_condition-141"><span class="linenos">141</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">left_tables</span> <span class="ow">and</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">right_tables</span><span class="p">:</span> -</span><span id="join_condition-142"><a href="#join_condition-142"><span class="linenos">142</span></a> <span class="n">join_key</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> -</span><span id="join_condition-143"><a href="#join_condition-143"><span class="linenos">143</span></a> <span class="n">source_key</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">right</span><span class="p">)</span> -</span><span id="join_condition-144"><a href="#join_condition-144"><span class="linenos">144</span></a> <span class="n">condition</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span> -</span><span id="join_condition-145"><a href="#join_condition-145"><span class="linenos">145</span></a> <span class="k">elif</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">right_tables</span> <span class="ow">and</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">left_tables</span><span class="p">:</span> -</span><span id="join_condition-146"><a href="#join_condition-146"><span class="linenos">146</span></a> <span class="n">join_key</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">right</span><span class="p">)</span> -</span><span id="join_condition-147"><a href="#join_condition-147"><span class="linenos">147</span></a> <span class="n">source_key</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> -</span><span id="join_condition-148"><a href="#join_condition-148"><span class="linenos">148</span></a> <span class="n">condition</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span> -</span><span id="join_condition-149"><a href="#join_condition-149"><span class="linenos">149</span></a> -</span><span id="join_condition-150"><a href="#join_condition-150"><span class="linenos">150</span></a> <span class="c1"># find the join keys</span> -</span><span id="join_condition-151"><a href="#join_condition-151"><span class="linenos">151</span></a> <span class="c1"># SELECT</span> -</span><span id="join_condition-152"><a href="#join_condition-152"><span class="linenos">152</span></a> <span class="c1"># FROM x</span> -</span><span id="join_condition-153"><a href="#join_condition-153"><span class="linenos">153</span></a> <span class="c1"># JOIN y</span> -</span><span id="join_condition-154"><a href="#join_condition-154"><span class="linenos">154</span></a> <span class="c1"># ON x.a = y.b AND y.b > 1</span> -</span><span id="join_condition-155"><a href="#join_condition-155"><span class="linenos">155</span></a> <span class="c1">#</span> -</span><span id="join_condition-156"><a href="#join_condition-156"><span class="linenos">156</span></a> <span class="c1"># should pull y.b as the join key and x.a as the source key</span> -</span><span id="join_condition-157"><a href="#join_condition-157"><span class="linenos">157</span></a> <span class="k">if</span> <span class="n">normalized</span><span class="p">(</span><span class="n">on</span><span class="p">):</span> -</span><span id="join_condition-158"><a href="#join_condition-158"><span class="linenos">158</span></a> <span class="n">on</span> <span class="o">=</span> <span class="n">on</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">on</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span><span class="n">on</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span> -</span><span id="join_condition-159"><a href="#join_condition-159"><span class="linenos">159</span></a> -</span><span id="join_condition-160"><a href="#join_condition-160"><span class="linenos">160</span></a> <span class="k">for</span> <span class="n">condition</span> <span class="ow">in</span> <span class="n">on</span><span class="o">.</span><span class="n">flatten</span><span class="p">():</span> -</span><span id="join_condition-161"><a href="#join_condition-161"><span class="linenos">161</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">):</span> -</span><span id="join_condition-162"><a href="#join_condition-162"><span class="linenos">162</span></a> <span class="n">extract_condition</span><span class="p">(</span><span class="n">condition</span><span class="p">)</span> -</span><span id="join_condition-163"><a href="#join_condition-163"><span class="linenos">163</span></a> <span class="k">elif</span> <span class="n">normalized</span><span class="p">(</span><span class="n">on</span><span class="p">,</span> <span class="n">dnf</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> -</span><span id="join_condition-164"><a href="#join_condition-164"><span class="linenos">164</span></a> <span class="n">conditions</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="join_condition-165"><a href="#join_condition-165"><span class="linenos">165</span></a> -</span><span id="join_condition-166"><a href="#join_condition-166"><span class="linenos">166</span></a> <span class="k">for</span> <span class="n">condition</span> <span class="ow">in</span> <span class="n">on</span><span class="o">.</span><span class="n">flatten</span><span class="p">():</span> -</span><span id="join_condition-167"><a href="#join_condition-167"><span class="linenos">167</span></a> <span class="n">parts</span> <span class="o">=</span> <span class="p">[</span><span class="n">part</span> <span class="k">for</span> <span class="n">part</span> <span class="ow">in</span> <span class="n">condition</span><span class="o">.</span><span class="n">flatten</span><span class="p">()</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">part</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">)]</span> -</span><span id="join_condition-168"><a href="#join_condition-168"><span class="linenos">168</span></a> <span class="k">if</span> <span class="n">conditions</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> -</span><span id="join_condition-169"><a href="#join_condition-169"><span class="linenos">169</span></a> <span class="n">conditions</span> <span class="o">=</span> <span class="n">parts</span> -</span><span id="join_condition-170"><a href="#join_condition-170"><span class="linenos">170</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="join_condition-171"><a href="#join_condition-171"><span class="linenos">171</span></a> <span class="n">temp</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="join_condition-172"><a href="#join_condition-172"><span class="linenos">172</span></a> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">parts</span><span class="p">:</span> -</span><span id="join_condition-173"><a href="#join_condition-173"><span class="linenos">173</span></a> <span class="n">cs</span> <span class="o">=</span> <span class="p">[</span><span class="n">c</span> <span class="k">for</span> <span class="n">c</span> <span class="ow">in</span> <span class="n">conditions</span> <span class="k">if</span> <span class="n">p</span> <span class="o">==</span> <span class="n">c</span><span class="p">]</span> -</span><span id="join_condition-174"><a href="#join_condition-174"><span class="linenos">174</span></a> -</span><span id="join_condition-175"><a href="#join_condition-175"><span class="linenos">175</span></a> <span class="k">if</span> <span class="n">cs</span><span class="p">:</span> -</span><span id="join_condition-176"><a href="#join_condition-176"><span class="linenos">176</span></a> <span class="n">temp</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">p</span><span class="p">)</span> -</span><span id="join_condition-177"><a href="#join_condition-177"><span class="linenos">177</span></a> <span class="n">temp</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">cs</span><span class="p">)</span> -</span><span id="join_condition-178"><a href="#join_condition-178"><span class="linenos">178</span></a> <span class="n">conditions</span> <span class="o">=</span> <span class="n">temp</span> -</span><span id="join_condition-179"><a href="#join_condition-179"><span class="linenos">179</span></a> -</span><span id="join_condition-180"><a href="#join_condition-180"><span class="linenos">180</span></a> <span class="k">for</span> <span class="n">condition</span> <span class="ow">in</span> <span class="n">conditions</span><span class="p">:</span> -</span><span id="join_condition-181"><a href="#join_condition-181"><span class="linenos">181</span></a> <span class="n">extract_condition</span><span class="p">(</span><span class="n">condition</span><span class="p">)</span> -</span><span id="join_condition-182"><a href="#join_condition-182"><span class="linenos">182</span></a> -</span><span id="join_condition-183"><a href="#join_condition-183"><span class="linenos">183</span></a> <span class="n">on</span> <span class="o">=</span> <span class="n">simplify</span><span class="p">(</span><span class="n">on</span><span class="p">)</span> -</span><span id="join_condition-184"><a href="#join_condition-184"><span class="linenos">184</span></a> <span class="n">remaining_condition</span> <span class="o">=</span> <span class="kc">None</span> <span class="k">if</span> <span class="n">on</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">else</span> <span class="n">on</span> -</span><span id="join_condition-185"><a href="#join_condition-185"><span class="linenos">185</span></a> <span class="k">return</span> <span class="n">source_key</span><span class="p">,</span> <span class="n">join_key</span><span class="p">,</span> <span class="n">remaining_condition</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="join_condition-120"><a href="#join_condition-120"><span class="linenos">120</span></a><span class="k">def</span> <span class="nf">join_condition</span><span class="p">(</span><span class="n">join</span><span class="p">):</span> +</span><span id="join_condition-121"><a href="#join_condition-121"><span class="linenos">121</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="join_condition-122"><a href="#join_condition-122"><span class="linenos">122</span></a><span class="sd"> Extract the join condition from a join expression.</span> +</span><span id="join_condition-123"><a href="#join_condition-123"><span class="linenos">123</span></a> +</span><span id="join_condition-124"><a href="#join_condition-124"><span class="linenos">124</span></a><span class="sd"> Args:</span> +</span><span id="join_condition-125"><a href="#join_condition-125"><span class="linenos">125</span></a><span class="sd"> join (exp.Join)</span> +</span><span id="join_condition-126"><a href="#join_condition-126"><span class="linenos">126</span></a><span class="sd"> Returns:</span> +</span><span id="join_condition-127"><a href="#join_condition-127"><span class="linenos">127</span></a><span class="sd"> tuple[list[str], list[str], exp.Expression]:</span> +</span><span id="join_condition-128"><a href="#join_condition-128"><span class="linenos">128</span></a><span class="sd"> Tuple of (source key, join key, remaining predicate)</span> +</span><span id="join_condition-129"><a href="#join_condition-129"><span class="linenos">129</span></a><span class="sd"> """</span> +</span><span id="join_condition-130"><a href="#join_condition-130"><span class="linenos">130</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">alias_or_name</span> +</span><span id="join_condition-131"><a href="#join_condition-131"><span class="linenos">131</span></a> <span class="n">on</span> <span class="o">=</span> <span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on"</span><span class="p">)</span> <span class="ow">or</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span><span class="o">.</span><span class="n">copy</span><span class="p">()</span> +</span><span id="join_condition-132"><a href="#join_condition-132"><span class="linenos">132</span></a> <span class="n">source_key</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="join_condition-133"><a href="#join_condition-133"><span class="linenos">133</span></a> <span class="n">join_key</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="join_condition-134"><a href="#join_condition-134"><span class="linenos">134</span></a> +</span><span id="join_condition-135"><a href="#join_condition-135"><span class="linenos">135</span></a> <span class="k">def</span> <span class="nf">extract_condition</span><span class="p">(</span><span class="n">condition</span><span class="p">):</span> +</span><span id="join_condition-136"><a href="#join_condition-136"><span class="linenos">136</span></a> <span class="n">left</span><span class="p">,</span> <span class="n">right</span> <span class="o">=</span> <span class="n">condition</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">()</span> +</span><span id="join_condition-137"><a href="#join_condition-137"><span class="linenos">137</span></a> <span class="n">left_tables</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">column_table_names</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> +</span><span id="join_condition-138"><a href="#join_condition-138"><span class="linenos">138</span></a> <span class="n">right_tables</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">column_table_names</span><span class="p">(</span><span class="n">right</span><span class="p">)</span> +</span><span id="join_condition-139"><a href="#join_condition-139"><span class="linenos">139</span></a> +</span><span id="join_condition-140"><a href="#join_condition-140"><span class="linenos">140</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">left_tables</span> <span class="ow">and</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">right_tables</span><span class="p">:</span> +</span><span id="join_condition-141"><a href="#join_condition-141"><span class="linenos">141</span></a> <span class="n">join_key</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> +</span><span id="join_condition-142"><a href="#join_condition-142"><span class="linenos">142</span></a> <span class="n">source_key</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">right</span><span class="p">)</span> +</span><span id="join_condition-143"><a href="#join_condition-143"><span class="linenos">143</span></a> <span class="n">condition</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span> +</span><span id="join_condition-144"><a href="#join_condition-144"><span class="linenos">144</span></a> <span class="k">elif</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">right_tables</span> <span class="ow">and</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">left_tables</span><span class="p">:</span> +</span><span id="join_condition-145"><a href="#join_condition-145"><span class="linenos">145</span></a> <span class="n">join_key</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">right</span><span class="p">)</span> +</span><span id="join_condition-146"><a href="#join_condition-146"><span class="linenos">146</span></a> <span class="n">source_key</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> +</span><span id="join_condition-147"><a href="#join_condition-147"><span class="linenos">147</span></a> <span class="n">condition</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span> +</span><span id="join_condition-148"><a href="#join_condition-148"><span class="linenos">148</span></a> +</span><span id="join_condition-149"><a href="#join_condition-149"><span class="linenos">149</span></a> <span class="c1"># find the join keys</span> +</span><span id="join_condition-150"><a href="#join_condition-150"><span class="linenos">150</span></a> <span class="c1"># SELECT</span> +</span><span id="join_condition-151"><a href="#join_condition-151"><span class="linenos">151</span></a> <span class="c1"># FROM x</span> +</span><span id="join_condition-152"><a href="#join_condition-152"><span class="linenos">152</span></a> <span class="c1"># JOIN y</span> +</span><span id="join_condition-153"><a href="#join_condition-153"><span class="linenos">153</span></a> <span class="c1"># ON x.a = y.b AND y.b > 1</span> +</span><span id="join_condition-154"><a href="#join_condition-154"><span class="linenos">154</span></a> <span class="c1">#</span> +</span><span id="join_condition-155"><a href="#join_condition-155"><span class="linenos">155</span></a> <span class="c1"># should pull y.b as the join key and x.a as the source key</span> +</span><span id="join_condition-156"><a href="#join_condition-156"><span class="linenos">156</span></a> <span class="k">if</span> <span class="n">normalized</span><span class="p">(</span><span class="n">on</span><span class="p">):</span> +</span><span id="join_condition-157"><a href="#join_condition-157"><span class="linenos">157</span></a> <span class="n">on</span> <span class="o">=</span> <span class="n">on</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">on</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span><span class="n">on</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span> +</span><span id="join_condition-158"><a href="#join_condition-158"><span class="linenos">158</span></a> +</span><span id="join_condition-159"><a href="#join_condition-159"><span class="linenos">159</span></a> <span class="k">for</span> <span class="n">condition</span> <span class="ow">in</span> <span class="n">on</span><span class="o">.</span><span class="n">flatten</span><span class="p">():</span> +</span><span id="join_condition-160"><a href="#join_condition-160"><span class="linenos">160</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">):</span> +</span><span id="join_condition-161"><a href="#join_condition-161"><span class="linenos">161</span></a> <span class="n">extract_condition</span><span class="p">(</span><span class="n">condition</span><span class="p">)</span> +</span><span id="join_condition-162"><a href="#join_condition-162"><span class="linenos">162</span></a> <span class="k">elif</span> <span class="n">normalized</span><span class="p">(</span><span class="n">on</span><span class="p">,</span> <span class="n">dnf</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> +</span><span id="join_condition-163"><a href="#join_condition-163"><span class="linenos">163</span></a> <span class="n">conditions</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="join_condition-164"><a href="#join_condition-164"><span class="linenos">164</span></a> +</span><span id="join_condition-165"><a href="#join_condition-165"><span class="linenos">165</span></a> <span class="k">for</span> <span class="n">condition</span> <span class="ow">in</span> <span class="n">on</span><span class="o">.</span><span class="n">flatten</span><span class="p">():</span> +</span><span id="join_condition-166"><a href="#join_condition-166"><span class="linenos">166</span></a> <span class="n">parts</span> <span class="o">=</span> <span class="p">[</span><span class="n">part</span> <span class="k">for</span> <span class="n">part</span> <span class="ow">in</span> <span class="n">condition</span><span class="o">.</span><span class="n">flatten</span><span class="p">()</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">part</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">)]</span> +</span><span id="join_condition-167"><a href="#join_condition-167"><span class="linenos">167</span></a> <span class="k">if</span> <span class="n">conditions</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> +</span><span id="join_condition-168"><a href="#join_condition-168"><span class="linenos">168</span></a> <span class="n">conditions</span> <span class="o">=</span> <span class="n">parts</span> +</span><span id="join_condition-169"><a href="#join_condition-169"><span class="linenos">169</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="join_condition-170"><a href="#join_condition-170"><span class="linenos">170</span></a> <span class="n">temp</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="join_condition-171"><a href="#join_condition-171"><span class="linenos">171</span></a> <span class="k">for</span> <span class="n">p</span> <span class="ow">in</span> <span class="n">parts</span><span class="p">:</span> +</span><span id="join_condition-172"><a href="#join_condition-172"><span class="linenos">172</span></a> <span class="n">cs</span> <span class="o">=</span> <span class="p">[</span><span class="n">c</span> <span class="k">for</span> <span class="n">c</span> <span class="ow">in</span> <span class="n">conditions</span> <span class="k">if</span> <span class="n">p</span> <span class="o">==</span> <span class="n">c</span><span class="p">]</span> +</span><span id="join_condition-173"><a href="#join_condition-173"><span class="linenos">173</span></a> +</span><span id="join_condition-174"><a href="#join_condition-174"><span class="linenos">174</span></a> <span class="k">if</span> <span class="n">cs</span><span class="p">:</span> +</span><span id="join_condition-175"><a href="#join_condition-175"><span class="linenos">175</span></a> <span class="n">temp</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">p</span><span class="p">)</span> +</span><span id="join_condition-176"><a href="#join_condition-176"><span class="linenos">176</span></a> <span class="n">temp</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">cs</span><span class="p">)</span> +</span><span id="join_condition-177"><a href="#join_condition-177"><span class="linenos">177</span></a> <span class="n">conditions</span> <span class="o">=</span> <span class="n">temp</span> +</span><span id="join_condition-178"><a href="#join_condition-178"><span class="linenos">178</span></a> +</span><span id="join_condition-179"><a href="#join_condition-179"><span class="linenos">179</span></a> <span class="k">for</span> <span class="n">condition</span> <span class="ow">in</span> <span class="n">conditions</span><span class="p">:</span> +</span><span id="join_condition-180"><a href="#join_condition-180"><span class="linenos">180</span></a> <span class="n">extract_condition</span><span class="p">(</span><span class="n">condition</span><span class="p">)</span> +</span><span id="join_condition-181"><a href="#join_condition-181"><span class="linenos">181</span></a> +</span><span id="join_condition-182"><a href="#join_condition-182"><span class="linenos">182</span></a> <span class="k">return</span> <span class="n">source_key</span><span class="p">,</span> <span class="n">join_key</span><span class="p">,</span> <span class="n">on</span> </span></pre></div> diff --git a/docs/sqlglot/optimizer/eliminate_subqueries.html b/docs/sqlglot/optimizer/eliminate_subqueries.html index 309c76d..28b01b3 100644 --- a/docs/sqlglot/optimizer/eliminate_subqueries.html +++ b/docs/sqlglot/optimizer/eliminate_subqueries.html @@ -3,7 +3,7 @@ <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> - <meta name="generator" content="pdoc 13.0.0"/> + <meta name="generator" content="pdoc 13.0.1"/> <title>sqlglot.optimizer.eliminate_subqueries API documentation</title> <style>/*! * Bootstrap Reboot v5.0.0 (https://getbootstrap.com/) * Copyright 2011-2021 The Bootstrap Authors * Copyright 2011-2021 Twitter, Inc. * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE) * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md) */*,::after,::before{box-sizing:border-box}@media (prefers-reduced-motion:no-preference){:root{scroll-behavior:smooth}}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","Liberation Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color 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code{font-size:inherit;color:inherit;word-break:normal}code{font-size:.875em;color:#d63384;word-wrap:break-word}a>code{color:inherit}kbd{padding:.2rem .4rem;font-size:.875em;color:#fff;background-color:#212529;border-radius:.2rem}kbd kbd{padding:0;font-size:1em;font-weight:700}figure{margin:0 0 1rem}img,svg{vertical-align:middle}table{caption-side:bottom;border-collapse:collapse}caption{padding-top:.5rem;padding-bottom:.5rem;color:#6c757d;text-align:left}th{text-align:inherit;text-align:-webkit-match-parent}tbody,td,tfoot,th,thead,tr{border-color:inherit;border-style:solid;border-width:0}label{display:inline-block}button{border-radius:0}button:focus:not(:focus-visible){outline:0}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,select{text-transform:none}[role=button]{cursor:pointer}select{word-wrap:normal}select:disabled{opacity:1}[list]::-webkit-calendar-picker-indicator{display:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]:not(:disabled),[type=reset]:not(:disabled),[type=submit]:not(:disabled),button:not(:disabled){cursor:pointer}::-moz-focus-inner{padding:0;border-style:none}textarea{resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{float:left;width:100%;padding:0;margin-bottom:.5rem;font-size:calc(1.275rem + .3vw);line-height:inherit}@media (min-width:1200px){legend{font-size:1.5rem}}legend+*{clear:left}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-fields-wrapper,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-text,::-webkit-datetime-edit-year-field{padding:0}::-webkit-inner-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:textfield}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-color-swatch-wrapper{padding:0}::file-selector-button{font:inherit}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}iframe{border:0}summary{display:list-item;cursor:pointer}progress{vertical-align:baseline}[hidden]{display:none!important}</style> @@ -28,8 +28,8 @@ - <h2>API Documentation</h2> - <ul class="memberlist"> + <h2>API Documentation</h2> + <ul class="memberlist"> <li> <a class="function" href="#eliminate_subqueries">eliminate_subqueries</a> </li> @@ -61,194 +61,192 @@ </span><span id="L-3"><a href="#L-3"><span class="linenos"> 3</span></a><span class="kn">from</span> <span class="nn">sqlglot</span> <span class="kn">import</span> <span class="n">expressions</span> <span class="k">as</span> <span class="n">exp</span> </span><span id="L-4"><a href="#L-4"><span class="linenos"> 4</span></a><span class="kn">from</span> <span class="nn">sqlglot.helper</span> <span class="kn">import</span> <span class="n">find_new_name</span> </span><span id="L-5"><a href="#L-5"><span class="linenos"> 5</span></a><span class="kn">from</span> <span class="nn">sqlglot.optimizer.scope</span> <span class="kn">import</span> <span class="n">build_scope</span> -</span><span id="L-6"><a href="#L-6"><span class="linenos"> 6</span></a><span class="kn">from</span> <span class="nn">sqlglot.optimizer.simplify</span> <span class="kn">import</span> <span class="n">simplify</span> +</span><span id="L-6"><a href="#L-6"><span class="linenos"> 6</span></a> </span><span id="L-7"><a href="#L-7"><span class="linenos"> 7</span></a> -</span><span id="L-8"><a href="#L-8"><span class="linenos"> 8</span></a> -</span><span id="L-9"><a href="#L-9"><span class="linenos"> 9</span></a><span class="k">def</span> <span class="nf">eliminate_subqueries</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-10"><a href="#L-10"><span class="linenos"> 10</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-11"><a href="#L-11"><span class="linenos"> 11</span></a><span class="sd"> Rewrite derived tables as CTES, deduplicating if possible.</span> -</span><span id="L-12"><a href="#L-12"><span class="linenos"> 12</span></a> -</span><span id="L-13"><a href="#L-13"><span class="linenos"> 13</span></a><span class="sd"> Example:</span> -</span><span id="L-14"><a href="#L-14"><span class="linenos"> 14</span></a><span class="sd"> >>> import sqlglot</span> -</span><span id="L-15"><a href="#L-15"><span class="linenos"> 15</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT a FROM (SELECT * FROM x) AS y")</span> -</span><span id="L-16"><a href="#L-16"><span class="linenos"> 16</span></a><span class="sd"> >>> eliminate_subqueries(expression).sql()</span> -</span><span id="L-17"><a href="#L-17"><span class="linenos"> 17</span></a><span class="sd"> 'WITH y AS (SELECT * FROM x) SELECT a FROM y AS y'</span> -</span><span id="L-18"><a href="#L-18"><span class="linenos"> 18</span></a> -</span><span id="L-19"><a href="#L-19"><span class="linenos"> 19</span></a><span class="sd"> This also deduplicates common subqueries:</span> -</span><span id="L-20"><a href="#L-20"><span class="linenos"> 20</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT a FROM (SELECT * FROM x) AS y JOIN (SELECT * FROM x) AS z")</span> -</span><span id="L-21"><a href="#L-21"><span class="linenos"> 21</span></a><span class="sd"> >>> eliminate_subqueries(expression).sql()</span> -</span><span id="L-22"><a href="#L-22"><span class="linenos"> 22</span></a><span class="sd"> 'WITH y AS (SELECT * FROM x) SELECT a FROM y AS y JOIN y AS z'</span> -</span><span id="L-23"><a href="#L-23"><span class="linenos"> 23</span></a> -</span><span id="L-24"><a href="#L-24"><span class="linenos"> 24</span></a><span class="sd"> Args:</span> -</span><span id="L-25"><a href="#L-25"><span class="linenos"> 25</span></a><span class="sd"> expression (sqlglot.Expression): expression</span> -</span><span id="L-26"><a href="#L-26"><span class="linenos"> 26</span></a><span class="sd"> Returns:</span> -</span><span id="L-27"><a href="#L-27"><span class="linenos"> 27</span></a><span class="sd"> sqlglot.Expression: expression</span> -</span><span id="L-28"><a href="#L-28"><span class="linenos"> 28</span></a><span class="sd"> """</span> -</span><span id="L-29"><a href="#L-29"><span class="linenos"> 29</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">):</span> -</span><span id="L-30"><a href="#L-30"><span class="linenos"> 30</span></a> <span class="c1"># It's possible to have subqueries at the root, e.g. (SELECT * FROM x) LIMIT 1</span> -</span><span id="L-31"><a href="#L-31"><span class="linenos"> 31</span></a> <span class="n">eliminate_subqueries</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> -</span><span id="L-32"><a href="#L-32"><span class="linenos"> 32</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-33"><a href="#L-33"><span class="linenos"> 33</span></a> -</span><span id="L-34"><a href="#L-34"><span class="linenos"> 34</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-35"><a href="#L-35"><span class="linenos"> 35</span></a> <span class="n">root</span> <span class="o">=</span> <span class="n">build_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-36"><a href="#L-36"><span class="linenos"> 36</span></a> -</span><span id="L-37"><a href="#L-37"><span class="linenos"> 37</span></a> <span class="c1"># Map of alias->Scope|Table</span> -</span><span id="L-38"><a href="#L-38"><span class="linenos"> 38</span></a> <span class="c1"># These are all aliases that are already used in the expression.</span> -</span><span id="L-39"><a href="#L-39"><span class="linenos"> 39</span></a> <span class="c1"># We don't want to create new CTEs that conflict with these names.</span> -</span><span id="L-40"><a href="#L-40"><span class="linenos"> 40</span></a> <span class="n">taken</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="L-41"><a href="#L-41"><span class="linenos"> 41</span></a> -</span><span id="L-42"><a href="#L-42"><span class="linenos"> 42</span></a> <span class="c1"># All CTE aliases in the root scope are taken</span> -</span><span id="L-43"><a href="#L-43"><span class="linenos"> 43</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">root</span><span class="o">.</span><span class="n">cte_scopes</span><span class="p">:</span> -</span><span id="L-44"><a href="#L-44"><span class="linenos"> 44</span></a> <span class="n">taken</span><span class="p">[</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">alias</span><span class="p">]</span> <span class="o">=</span> <span class="n">scope</span> -</span><span id="L-45"><a href="#L-45"><span class="linenos"> 45</span></a> -</span><span id="L-46"><a href="#L-46"><span class="linenos"> 46</span></a> <span class="c1"># All table names are taken</span> -</span><span id="L-47"><a href="#L-47"><span class="linenos"> 47</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">root</span><span class="o">.</span><span class="n">traverse</span><span class="p">():</span> -</span><span id="L-48"><a href="#L-48"><span class="linenos"> 48</span></a> <span class="n">taken</span><span class="o">.</span><span class="n">update</span><span class="p">(</span> -</span><span id="L-49"><a href="#L-49"><span class="linenos"> 49</span></a> <span class="p">{</span> -</span><span id="L-50"><a href="#L-50"><span class="linenos"> 50</span></a> <span class="n">source</span><span class="o">.</span><span class="n">name</span><span class="p">:</span> <span class="n">source</span> -</span><span id="L-51"><a href="#L-51"><span class="linenos"> 51</span></a> <span class="k">for</span> <span class="n">_</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> -</span><span id="L-52"><a href="#L-52"><span class="linenos"> 52</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">)</span> -</span><span id="L-53"><a href="#L-53"><span class="linenos"> 53</span></a> <span class="p">}</span> -</span><span id="L-54"><a href="#L-54"><span class="linenos"> 54</span></a> <span class="p">)</span> -</span><span id="L-55"><a href="#L-55"><span class="linenos"> 55</span></a> -</span><span id="L-56"><a href="#L-56"><span class="linenos"> 56</span></a> <span class="c1"># Map of Expression->alias</span> -</span><span id="L-57"><a href="#L-57"><span class="linenos"> 57</span></a> <span class="c1"># Existing CTES in the root expression. We'll use this for deduplication.</span> -</span><span id="L-58"><a href="#L-58"><span class="linenos"> 58</span></a> <span class="n">existing_ctes</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="L-59"><a href="#L-59"><span class="linenos"> 59</span></a> -</span><span id="L-60"><a href="#L-60"><span class="linenos"> 60</span></a> <span class="n">with_</span> <span class="o">=</span> <span class="n">root</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"with"</span><span class="p">)</span> -</span><span id="L-61"><a href="#L-61"><span class="linenos"> 61</span></a> <span class="n">recursive</span> <span class="o">=</span> <span class="kc">False</span> -</span><span id="L-62"><a href="#L-62"><span class="linenos"> 62</span></a> <span class="k">if</span> <span class="n">with_</span><span class="p">:</span> -</span><span id="L-63"><a href="#L-63"><span class="linenos"> 63</span></a> <span class="n">recursive</span> <span class="o">=</span> <span class="n">with_</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"recursive"</span><span class="p">)</span> -</span><span id="L-64"><a href="#L-64"><span class="linenos"> 64</span></a> <span class="k">for</span> <span class="n">cte</span> <span class="ow">in</span> <span class="n">with_</span><span class="o">.</span><span class="n">expressions</span><span class="p">:</span> -</span><span id="L-65"><a href="#L-65"><span class="linenos"> 65</span></a> <span class="n">existing_ctes</span><span class="p">[</span><span class="n">cte</span><span class="o">.</span><span class="n">this</span><span class="p">]</span> <span class="o">=</span> <span class="n">cte</span><span class="o">.</span><span class="n">alias</span> -</span><span id="L-66"><a href="#L-66"><span class="linenos"> 66</span></a> <span class="n">new_ctes</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-67"><a href="#L-67"><span class="linenos"> 67</span></a> -</span><span id="L-68"><a href="#L-68"><span class="linenos"> 68</span></a> <span class="c1"># We're adding more CTEs, but we want to maintain the DAG order.</span> -</span><span id="L-69"><a href="#L-69"><span class="linenos"> 69</span></a> <span class="c1"># Derived tables within an existing CTE need to come before the existing CTE.</span> -</span><span id="L-70"><a href="#L-70"><span class="linenos"> 70</span></a> <span class="k">for</span> <span class="n">cte_scope</span> <span class="ow">in</span> <span class="n">root</span><span class="o">.</span><span class="n">cte_scopes</span><span class="p">:</span> -</span><span id="L-71"><a href="#L-71"><span class="linenos"> 71</span></a> <span class="c1"># Append all the new CTEs from this existing CTE</span> -</span><span id="L-72"><a href="#L-72"><span class="linenos"> 72</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">cte_scope</span><span class="o">.</span><span class="n">traverse</span><span class="p">():</span> -</span><span id="L-73"><a href="#L-73"><span class="linenos"> 73</span></a> <span class="k">if</span> <span class="n">scope</span> <span class="ow">is</span> <span class="n">cte_scope</span><span class="p">:</span> -</span><span id="L-74"><a href="#L-74"><span class="linenos"> 74</span></a> <span class="c1"># Don't try to eliminate this CTE itself</span> -</span><span id="L-75"><a href="#L-75"><span class="linenos"> 75</span></a> <span class="k">continue</span> -</span><span id="L-76"><a href="#L-76"><span class="linenos"> 76</span></a> <span class="n">new_cte</span> <span class="o">=</span> <span class="n">_eliminate</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">)</span> -</span><span id="L-77"><a href="#L-77"><span class="linenos"> 77</span></a> <span class="k">if</span> <span class="n">new_cte</span><span class="p">:</span> -</span><span id="L-78"><a href="#L-78"><span class="linenos"> 78</span></a> <span class="n">new_ctes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">new_cte</span><span class="p">)</span> -</span><span id="L-79"><a href="#L-79"><span class="linenos"> 79</span></a> -</span><span id="L-80"><a href="#L-80"><span class="linenos"> 80</span></a> <span class="c1"># Append the existing CTE itself</span> -</span><span id="L-81"><a href="#L-81"><span class="linenos"> 81</span></a> <span class="n">new_ctes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">cte_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span><span class="p">)</span> -</span><span id="L-82"><a href="#L-82"><span class="linenos"> 82</span></a> -</span><span id="L-83"><a href="#L-83"><span class="linenos"> 83</span></a> <span class="c1"># Now append the rest</span> -</span><span id="L-84"><a href="#L-84"><span class="linenos"> 84</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="n">root</span><span class="o">.</span><span class="n">union_scopes</span><span class="p">,</span> <span class="n">root</span><span class="o">.</span><span class="n">subquery_scopes</span><span class="p">,</span> <span class="n">root</span><span class="o">.</span><span class="n">table_scopes</span><span class="p">):</span> -</span><span id="L-85"><a href="#L-85"><span class="linenos"> 85</span></a> <span class="k">for</span> <span class="n">child_scope</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">traverse</span><span class="p">():</span> -</span><span id="L-86"><a href="#L-86"><span class="linenos"> 86</span></a> <span class="n">new_cte</span> <span class="o">=</span> <span class="n">_eliminate</span><span class="p">(</span><span class="n">child_scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">)</span> -</span><span id="L-87"><a href="#L-87"><span class="linenos"> 87</span></a> <span class="k">if</span> <span class="n">new_cte</span><span class="p">:</span> -</span><span id="L-88"><a href="#L-88"><span class="linenos"> 88</span></a> <span class="n">new_ctes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">new_cte</span><span class="p">)</span> -</span><span id="L-89"><a href="#L-89"><span class="linenos"> 89</span></a> -</span><span id="L-90"><a href="#L-90"><span class="linenos"> 90</span></a> <span class="k">if</span> <span class="n">new_ctes</span><span class="p">:</span> -</span><span id="L-91"><a href="#L-91"><span class="linenos"> 91</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"with"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">With</span><span class="p">(</span><span class="n">expressions</span><span class="o">=</span><span class="n">new_ctes</span><span class="p">,</span> <span class="n">recursive</span><span class="o">=</span><span class="n">recursive</span><span class="p">))</span> +</span><span id="L-8"><a href="#L-8"><span class="linenos"> 8</span></a><span class="k">def</span> <span class="nf">eliminate_subqueries</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-9"><a href="#L-9"><span class="linenos"> 9</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-10"><a href="#L-10"><span class="linenos"> 10</span></a><span class="sd"> Rewrite derived tables as CTES, deduplicating if possible.</span> +</span><span id="L-11"><a href="#L-11"><span class="linenos"> 11</span></a> +</span><span id="L-12"><a href="#L-12"><span class="linenos"> 12</span></a><span class="sd"> Example:</span> +</span><span id="L-13"><a href="#L-13"><span class="linenos"> 13</span></a><span class="sd"> >>> import sqlglot</span> +</span><span id="L-14"><a href="#L-14"><span class="linenos"> 14</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT a FROM (SELECT * FROM x) AS y")</span> +</span><span id="L-15"><a href="#L-15"><span class="linenos"> 15</span></a><span class="sd"> >>> eliminate_subqueries(expression).sql()</span> +</span><span id="L-16"><a href="#L-16"><span class="linenos"> 16</span></a><span class="sd"> 'WITH y AS (SELECT * FROM x) SELECT a FROM y AS y'</span> +</span><span id="L-17"><a href="#L-17"><span class="linenos"> 17</span></a> +</span><span id="L-18"><a href="#L-18"><span class="linenos"> 18</span></a><span class="sd"> This also deduplicates common subqueries:</span> +</span><span id="L-19"><a href="#L-19"><span class="linenos"> 19</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT a FROM (SELECT * FROM x) AS y JOIN (SELECT * FROM x) AS z")</span> +</span><span id="L-20"><a href="#L-20"><span class="linenos"> 20</span></a><span class="sd"> >>> eliminate_subqueries(expression).sql()</span> +</span><span id="L-21"><a href="#L-21"><span class="linenos"> 21</span></a><span class="sd"> 'WITH y AS (SELECT * FROM x) SELECT a FROM y AS y JOIN y AS z'</span> +</span><span id="L-22"><a href="#L-22"><span class="linenos"> 22</span></a> +</span><span id="L-23"><a href="#L-23"><span class="linenos"> 23</span></a><span class="sd"> Args:</span> +</span><span id="L-24"><a href="#L-24"><span class="linenos"> 24</span></a><span class="sd"> expression (sqlglot.Expression): expression</span> +</span><span id="L-25"><a href="#L-25"><span class="linenos"> 25</span></a><span class="sd"> Returns:</span> +</span><span id="L-26"><a href="#L-26"><span class="linenos"> 26</span></a><span class="sd"> sqlglot.Expression: expression</span> +</span><span id="L-27"><a href="#L-27"><span class="linenos"> 27</span></a><span class="sd"> """</span> +</span><span id="L-28"><a href="#L-28"><span class="linenos"> 28</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">):</span> +</span><span id="L-29"><a href="#L-29"><span class="linenos"> 29</span></a> <span class="c1"># It's possible to have subqueries at the root, e.g. (SELECT * FROM x) LIMIT 1</span> +</span><span id="L-30"><a href="#L-30"><span class="linenos"> 30</span></a> <span class="n">eliminate_subqueries</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> +</span><span id="L-31"><a href="#L-31"><span class="linenos"> 31</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-32"><a href="#L-32"><span class="linenos"> 32</span></a> +</span><span id="L-33"><a href="#L-33"><span class="linenos"> 33</span></a> <span class="n">root</span> <span class="o">=</span> <span class="n">build_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="L-34"><a href="#L-34"><span class="linenos"> 34</span></a> +</span><span id="L-35"><a href="#L-35"><span class="linenos"> 35</span></a> <span class="c1"># Map of alias->Scope|Table</span> +</span><span id="L-36"><a href="#L-36"><span class="linenos"> 36</span></a> <span class="c1"># These are all aliases that are already used in the expression.</span> +</span><span id="L-37"><a href="#L-37"><span class="linenos"> 37</span></a> <span class="c1"># We don't want to create new CTEs that conflict with these names.</span> +</span><span id="L-38"><a href="#L-38"><span class="linenos"> 38</span></a> <span class="n">taken</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="L-39"><a href="#L-39"><span class="linenos"> 39</span></a> +</span><span id="L-40"><a href="#L-40"><span class="linenos"> 40</span></a> <span class="c1"># All CTE aliases in the root scope are taken</span> +</span><span id="L-41"><a href="#L-41"><span class="linenos"> 41</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">root</span><span class="o">.</span><span class="n">cte_scopes</span><span class="p">:</span> +</span><span id="L-42"><a href="#L-42"><span class="linenos"> 42</span></a> <span class="n">taken</span><span class="p">[</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">alias</span><span class="p">]</span> <span class="o">=</span> <span class="n">scope</span> +</span><span id="L-43"><a href="#L-43"><span class="linenos"> 43</span></a> +</span><span id="L-44"><a href="#L-44"><span class="linenos"> 44</span></a> <span class="c1"># All table names are taken</span> +</span><span id="L-45"><a href="#L-45"><span class="linenos"> 45</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">root</span><span class="o">.</span><span class="n">traverse</span><span class="p">():</span> +</span><span id="L-46"><a href="#L-46"><span class="linenos"> 46</span></a> <span class="n">taken</span><span class="o">.</span><span class="n">update</span><span class="p">(</span> +</span><span id="L-47"><a href="#L-47"><span class="linenos"> 47</span></a> <span class="p">{</span> +</span><span id="L-48"><a href="#L-48"><span class="linenos"> 48</span></a> <span class="n">source</span><span class="o">.</span><span class="n">name</span><span class="p">:</span> <span class="n">source</span> +</span><span id="L-49"><a href="#L-49"><span class="linenos"> 49</span></a> <span class="k">for</span> <span class="n">_</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> +</span><span id="L-50"><a href="#L-50"><span class="linenos"> 50</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">)</span> +</span><span id="L-51"><a href="#L-51"><span class="linenos"> 51</span></a> <span class="p">}</span> +</span><span id="L-52"><a href="#L-52"><span class="linenos"> 52</span></a> <span class="p">)</span> +</span><span id="L-53"><a href="#L-53"><span class="linenos"> 53</span></a> +</span><span id="L-54"><a href="#L-54"><span class="linenos"> 54</span></a> <span class="c1"># Map of Expression->alias</span> +</span><span id="L-55"><a href="#L-55"><span class="linenos"> 55</span></a> <span class="c1"># Existing CTES in the root expression. We'll use this for deduplication.</span> +</span><span id="L-56"><a href="#L-56"><span class="linenos"> 56</span></a> <span class="n">existing_ctes</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="L-57"><a href="#L-57"><span class="linenos"> 57</span></a> +</span><span id="L-58"><a href="#L-58"><span class="linenos"> 58</span></a> <span class="n">with_</span> <span class="o">=</span> <span class="n">root</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"with"</span><span class="p">)</span> +</span><span id="L-59"><a href="#L-59"><span class="linenos"> 59</span></a> <span class="n">recursive</span> <span class="o">=</span> <span class="kc">False</span> +</span><span id="L-60"><a href="#L-60"><span class="linenos"> 60</span></a> <span class="k">if</span> <span class="n">with_</span><span class="p">:</span> +</span><span id="L-61"><a href="#L-61"><span class="linenos"> 61</span></a> <span class="n">recursive</span> <span class="o">=</span> <span class="n">with_</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"recursive"</span><span class="p">)</span> +</span><span id="L-62"><a href="#L-62"><span class="linenos"> 62</span></a> <span class="k">for</span> <span class="n">cte</span> <span class="ow">in</span> <span class="n">with_</span><span class="o">.</span><span class="n">expressions</span><span class="p">:</span> +</span><span id="L-63"><a href="#L-63"><span class="linenos"> 63</span></a> <span class="n">existing_ctes</span><span class="p">[</span><span class="n">cte</span><span class="o">.</span><span class="n">this</span><span class="p">]</span> <span class="o">=</span> <span class="n">cte</span><span class="o">.</span><span class="n">alias</span> +</span><span id="L-64"><a href="#L-64"><span class="linenos"> 64</span></a> <span class="n">new_ctes</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-65"><a href="#L-65"><span class="linenos"> 65</span></a> +</span><span id="L-66"><a href="#L-66"><span class="linenos"> 66</span></a> <span class="c1"># We're adding more CTEs, but we want to maintain the DAG order.</span> +</span><span id="L-67"><a href="#L-67"><span class="linenos"> 67</span></a> <span class="c1"># Derived tables within an existing CTE need to come before the existing CTE.</span> +</span><span id="L-68"><a href="#L-68"><span class="linenos"> 68</span></a> <span class="k">for</span> <span class="n">cte_scope</span> <span class="ow">in</span> <span class="n">root</span><span class="o">.</span><span class="n">cte_scopes</span><span class="p">:</span> +</span><span id="L-69"><a href="#L-69"><span class="linenos"> 69</span></a> <span class="c1"># Append all the new CTEs from this existing CTE</span> +</span><span id="L-70"><a href="#L-70"><span class="linenos"> 70</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">cte_scope</span><span class="o">.</span><span class="n">traverse</span><span class="p">():</span> +</span><span id="L-71"><a href="#L-71"><span class="linenos"> 71</span></a> <span class="k">if</span> <span class="n">scope</span> <span class="ow">is</span> <span class="n">cte_scope</span><span class="p">:</span> +</span><span id="L-72"><a href="#L-72"><span class="linenos"> 72</span></a> <span class="c1"># Don't try to eliminate this CTE itself</span> +</span><span id="L-73"><a href="#L-73"><span class="linenos"> 73</span></a> <span class="k">continue</span> +</span><span id="L-74"><a href="#L-74"><span class="linenos"> 74</span></a> <span class="n">new_cte</span> <span class="o">=</span> <span class="n">_eliminate</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">)</span> +</span><span id="L-75"><a href="#L-75"><span class="linenos"> 75</span></a> <span class="k">if</span> <span class="n">new_cte</span><span class="p">:</span> +</span><span id="L-76"><a href="#L-76"><span class="linenos"> 76</span></a> <span class="n">new_ctes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">new_cte</span><span class="p">)</span> +</span><span id="L-77"><a href="#L-77"><span class="linenos"> 77</span></a> +</span><span id="L-78"><a href="#L-78"><span class="linenos"> 78</span></a> <span class="c1"># Append the existing CTE itself</span> +</span><span id="L-79"><a href="#L-79"><span class="linenos"> 79</span></a> <span class="n">new_ctes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">cte_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span><span class="p">)</span> +</span><span id="L-80"><a href="#L-80"><span class="linenos"> 80</span></a> +</span><span id="L-81"><a href="#L-81"><span class="linenos"> 81</span></a> <span class="c1"># Now append the rest</span> +</span><span id="L-82"><a href="#L-82"><span class="linenos"> 82</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="n">root</span><span class="o">.</span><span class="n">union_scopes</span><span class="p">,</span> <span class="n">root</span><span class="o">.</span><span class="n">subquery_scopes</span><span class="p">,</span> <span class="n">root</span><span class="o">.</span><span class="n">table_scopes</span><span class="p">):</span> +</span><span id="L-83"><a href="#L-83"><span class="linenos"> 83</span></a> <span class="k">for</span> <span class="n">child_scope</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">traverse</span><span class="p">():</span> +</span><span id="L-84"><a href="#L-84"><span class="linenos"> 84</span></a> <span class="n">new_cte</span> <span class="o">=</span> <span class="n">_eliminate</span><span class="p">(</span><span class="n">child_scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">)</span> +</span><span id="L-85"><a href="#L-85"><span class="linenos"> 85</span></a> <span class="k">if</span> <span class="n">new_cte</span><span class="p">:</span> +</span><span id="L-86"><a href="#L-86"><span class="linenos"> 86</span></a> <span class="n">new_ctes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">new_cte</span><span class="p">)</span> +</span><span id="L-87"><a href="#L-87"><span class="linenos"> 87</span></a> +</span><span id="L-88"><a href="#L-88"><span class="linenos"> 88</span></a> <span class="k">if</span> <span class="n">new_ctes</span><span class="p">:</span> +</span><span id="L-89"><a href="#L-89"><span class="linenos"> 89</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"with"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">With</span><span class="p">(</span><span class="n">expressions</span><span class="o">=</span><span class="n">new_ctes</span><span class="p">,</span> <span class="n">recursive</span><span class="o">=</span><span class="n">recursive</span><span class="p">))</span> +</span><span id="L-90"><a href="#L-90"><span class="linenos"> 90</span></a> +</span><span id="L-91"><a href="#L-91"><span class="linenos"> 91</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="L-92"><a href="#L-92"><span class="linenos"> 92</span></a> -</span><span id="L-93"><a href="#L-93"><span class="linenos"> 93</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-94"><a href="#L-94"><span class="linenos"> 94</span></a> -</span><span id="L-95"><a href="#L-95"><span class="linenos"> 95</span></a> -</span><span id="L-96"><a href="#L-96"><span class="linenos"> 96</span></a><span class="k">def</span> <span class="nf">_eliminate</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">):</span> -</span><span id="L-97"><a href="#L-97"><span class="linenos"> 97</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">is_union</span><span class="p">:</span> -</span><span id="L-98"><a href="#L-98"><span class="linenos"> 98</span></a> <span class="k">return</span> <span class="n">_eliminate_union</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">)</span> -</span><span id="L-99"><a href="#L-99"><span class="linenos"> 99</span></a> -</span><span id="L-100"><a href="#L-100"><span class="linenos">100</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">is_derived_table</span><span class="p">:</span> -</span><span id="L-101"><a href="#L-101"><span class="linenos">101</span></a> <span class="k">return</span> <span class="n">_eliminate_derived_table</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">)</span> -</span><span id="L-102"><a href="#L-102"><span class="linenos">102</span></a> -</span><span id="L-103"><a href="#L-103"><span class="linenos">103</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">is_cte</span><span class="p">:</span> -</span><span id="L-104"><a href="#L-104"><span class="linenos">104</span></a> <span class="k">return</span> <span class="n">_eliminate_cte</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">)</span> -</span><span id="L-105"><a href="#L-105"><span class="linenos">105</span></a> -</span><span id="L-106"><a href="#L-106"><span class="linenos">106</span></a> -</span><span id="L-107"><a href="#L-107"><span class="linenos">107</span></a><span class="k">def</span> <span class="nf">_eliminate_union</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">):</span> -</span><span id="L-108"><a href="#L-108"><span class="linenos">108</span></a> <span class="n">duplicate_cte_alias</span> <span class="o">=</span> <span class="n">existing_ctes</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">)</span> +</span><span id="L-93"><a href="#L-93"><span class="linenos"> 93</span></a> +</span><span id="L-94"><a href="#L-94"><span class="linenos"> 94</span></a><span class="k">def</span> <span class="nf">_eliminate</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">):</span> +</span><span id="L-95"><a href="#L-95"><span class="linenos"> 95</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">is_union</span><span class="p">:</span> +</span><span id="L-96"><a href="#L-96"><span class="linenos"> 96</span></a> <span class="k">return</span> <span class="n">_eliminate_union</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">)</span> +</span><span id="L-97"><a href="#L-97"><span class="linenos"> 97</span></a> +</span><span id="L-98"><a href="#L-98"><span class="linenos"> 98</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">is_derived_table</span><span class="p">:</span> +</span><span id="L-99"><a href="#L-99"><span class="linenos"> 99</span></a> <span class="k">return</span> <span class="n">_eliminate_derived_table</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">)</span> +</span><span id="L-100"><a href="#L-100"><span class="linenos">100</span></a> +</span><span id="L-101"><a href="#L-101"><span class="linenos">101</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">is_cte</span><span class="p">:</span> +</span><span id="L-102"><a href="#L-102"><span class="linenos">102</span></a> <span class="k">return</span> <span class="n">_eliminate_cte</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">)</span> +</span><span id="L-103"><a href="#L-103"><span class="linenos">103</span></a> +</span><span id="L-104"><a href="#L-104"><span class="linenos">104</span></a> +</span><span id="L-105"><a href="#L-105"><span class="linenos">105</span></a><span class="k">def</span> <span class="nf">_eliminate_union</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">):</span> +</span><span id="L-106"><a href="#L-106"><span class="linenos">106</span></a> <span class="n">duplicate_cte_alias</span> <span class="o">=</span> <span class="n">existing_ctes</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">)</span> +</span><span id="L-107"><a href="#L-107"><span class="linenos">107</span></a> +</span><span id="L-108"><a href="#L-108"><span class="linenos">108</span></a> <span class="n">alias</span> <span class="o">=</span> <span class="n">duplicate_cte_alias</span> <span class="ow">or</span> <span class="n">find_new_name</span><span class="p">(</span><span class="n">taken</span><span class="o">=</span><span class="n">taken</span><span class="p">,</span> <span class="n">base</span><span class="o">=</span><span class="s2">"cte"</span><span class="p">)</span> </span><span id="L-109"><a href="#L-109"><span class="linenos">109</span></a> -</span><span id="L-110"><a href="#L-110"><span class="linenos">110</span></a> <span class="n">alias</span> <span class="o">=</span> <span class="n">duplicate_cte_alias</span> <span class="ow">or</span> <span class="n">find_new_name</span><span class="p">(</span><span class="n">taken</span><span class="o">=</span><span class="n">taken</span><span class="p">,</span> <span class="n">base</span><span class="o">=</span><span class="s2">"cte"</span><span class="p">)</span> +</span><span id="L-110"><a href="#L-110"><span class="linenos">110</span></a> <span class="n">taken</span><span class="p">[</span><span class="n">alias</span><span class="p">]</span> <span class="o">=</span> <span class="n">scope</span> </span><span id="L-111"><a href="#L-111"><span class="linenos">111</span></a> -</span><span id="L-112"><a href="#L-112"><span class="linenos">112</span></a> <span class="n">taken</span><span class="p">[</span><span class="n">alias</span><span class="p">]</span> <span class="o">=</span> <span class="n">scope</span> -</span><span id="L-113"><a href="#L-113"><span class="linenos">113</span></a> -</span><span id="L-114"><a href="#L-114"><span class="linenos">114</span></a> <span class="c1"># Try to maintain the selections</span> -</span><span id="L-115"><a href="#L-115"><span class="linenos">115</span></a> <span class="n">expressions</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">selects</span> -</span><span id="L-116"><a href="#L-116"><span class="linenos">116</span></a> <span class="n">selects</span> <span class="o">=</span> <span class="p">[</span> -</span><span id="L-117"><a href="#L-117"><span class="linenos">117</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">alias_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">e</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">alias</span><span class="p">),</span> <span class="n">alias</span><span class="o">=</span><span class="n">e</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">)</span> -</span><span id="L-118"><a href="#L-118"><span class="linenos">118</span></a> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">expressions</span> -</span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a> <span class="k">if</span> <span class="n">e</span><span class="o">.</span><span class="n">alias_or_name</span> -</span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a> <span class="p">]</span> -</span><span id="L-121"><a href="#L-121"><span class="linenos">121</span></a> <span class="c1"># If not all selections have an alias, just select *</span> -</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">selects</span><span class="p">)</span> <span class="o">!=</span> <span class="nb">len</span><span class="p">(</span><span class="n">expressions</span><span class="p">):</span> -</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a> <span class="n">selects</span> <span class="o">=</span> <span class="p">[</span><span class="s2">"*"</span><span class="p">]</span> +</span><span id="L-112"><a href="#L-112"><span class="linenos">112</span></a> <span class="c1"># Try to maintain the selections</span> +</span><span id="L-113"><a href="#L-113"><span class="linenos">113</span></a> <span class="n">expressions</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">selects</span> +</span><span id="L-114"><a href="#L-114"><span class="linenos">114</span></a> <span class="n">selects</span> <span class="o">=</span> <span class="p">[</span> +</span><span id="L-115"><a href="#L-115"><span class="linenos">115</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">alias_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">e</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">alias</span><span class="p">),</span> <span class="n">alias</span><span class="o">=</span><span class="n">e</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">)</span> +</span><span id="L-116"><a href="#L-116"><span class="linenos">116</span></a> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">expressions</span> +</span><span id="L-117"><a href="#L-117"><span class="linenos">117</span></a> <span class="k">if</span> <span class="n">e</span><span class="o">.</span><span class="n">alias_or_name</span> +</span><span id="L-118"><a href="#L-118"><span class="linenos">118</span></a> <span class="p">]</span> +</span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a> <span class="c1"># If not all selections have an alias, just select *</span> +</span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">selects</span><span class="p">)</span> <span class="o">!=</span> <span class="nb">len</span><span class="p">(</span><span class="n">expressions</span><span class="p">):</span> +</span><span id="L-121"><a href="#L-121"><span class="linenos">121</span></a> <span class="n">selects</span> <span class="o">=</span> <span class="p">[</span><span class="s2">"*"</span><span class="p">]</span> +</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a> +</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">select</span><span class="p">(</span><span class="o">*</span><span class="n">selects</span><span class="p">)</span><span class="o">.</span><span class="n">from_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">alias_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">table_</span><span class="p">(</span><span class="n">alias</span><span class="p">),</span> <span class="n">alias</span><span class="o">=</span><span class="n">alias</span><span class="p">)))</span> </span><span id="L-124"><a href="#L-124"><span class="linenos">124</span></a> -</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">select</span><span class="p">(</span><span class="o">*</span><span class="n">selects</span><span class="p">)</span><span class="o">.</span><span class="n">from_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">alias_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">table_</span><span class="p">(</span><span class="n">alias</span><span class="p">),</span> <span class="n">alias</span><span class="o">=</span><span class="n">alias</span><span class="p">)))</span> -</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a> -</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">duplicate_cte_alias</span><span class="p">:</span> -</span><span id="L-128"><a href="#L-128"><span class="linenos">128</span></a> <span class="n">existing_ctes</span><span class="p">[</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">]</span> <span class="o">=</span> <span class="n">alias</span> -</span><span id="L-129"><a href="#L-129"><span class="linenos">129</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">CTE</span><span class="p">(</span> -</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a> <span class="n">this</span><span class="o">=</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> -</span><span id="L-131"><a href="#L-131"><span class="linenos">131</span></a> <span class="n">alias</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">alias</span><span class="p">)),</span> -</span><span id="L-132"><a href="#L-132"><span class="linenos">132</span></a> <span class="p">)</span> -</span><span id="L-133"><a href="#L-133"><span class="linenos">133</span></a> -</span><span id="L-134"><a href="#L-134"><span class="linenos">134</span></a> -</span><span id="L-135"><a href="#L-135"><span class="linenos">135</span></a><span class="k">def</span> <span class="nf">_eliminate_derived_table</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">):</span> -</span><span id="L-136"><a href="#L-136"><span class="linenos">136</span></a> <span class="n">parent</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span> -</span><span id="L-137"><a href="#L-137"><span class="linenos">137</span></a> <span class="n">name</span><span class="p">,</span> <span class="n">cte</span> <span class="o">=</span> <span class="n">_new_cte</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">)</span> -</span><span id="L-138"><a href="#L-138"><span class="linenos">138</span></a> -</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a> <span class="n">table</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">alias_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">table_</span><span class="p">(</span><span class="n">name</span><span class="p">),</span> <span class="n">alias</span><span class="o">=</span><span class="n">parent</span><span class="o">.</span><span class="n">alias</span> <span class="ow">or</span> <span class="n">name</span><span class="p">)</span> -</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a> <span class="n">parent</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">table</span><span class="p">)</span> +</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">duplicate_cte_alias</span><span class="p">:</span> +</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a> <span class="n">existing_ctes</span><span class="p">[</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">]</span> <span class="o">=</span> <span class="n">alias</span> +</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">CTE</span><span class="p">(</span> +</span><span id="L-128"><a href="#L-128"><span class="linenos">128</span></a> <span class="n">this</span><span class="o">=</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> +</span><span id="L-129"><a href="#L-129"><span class="linenos">129</span></a> <span class="n">alias</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">alias</span><span class="p">)),</span> +</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a> <span class="p">)</span> +</span><span id="L-131"><a href="#L-131"><span class="linenos">131</span></a> +</span><span id="L-132"><a href="#L-132"><span class="linenos">132</span></a> +</span><span id="L-133"><a href="#L-133"><span class="linenos">133</span></a><span class="k">def</span> <span class="nf">_eliminate_derived_table</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">):</span> +</span><span id="L-134"><a href="#L-134"><span class="linenos">134</span></a> <span class="n">parent</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span> +</span><span id="L-135"><a href="#L-135"><span class="linenos">135</span></a> <span class="n">name</span><span class="p">,</span> <span class="n">cte</span> <span class="o">=</span> <span class="n">_new_cte</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">)</span> +</span><span id="L-136"><a href="#L-136"><span class="linenos">136</span></a> +</span><span id="L-137"><a href="#L-137"><span class="linenos">137</span></a> <span class="n">table</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">alias_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">table_</span><span class="p">(</span><span class="n">name</span><span class="p">),</span> <span class="n">alias</span><span class="o">=</span><span class="n">parent</span><span class="o">.</span><span class="n">alias</span> <span class="ow">or</span> <span class="n">name</span><span class="p">)</span> +</span><span id="L-138"><a href="#L-138"><span class="linenos">138</span></a> <span class="n">parent</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">table</span><span class="p">)</span> +</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a> +</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a> <span class="k">return</span> <span class="n">cte</span> </span><span id="L-141"><a href="#L-141"><span class="linenos">141</span></a> -</span><span id="L-142"><a href="#L-142"><span class="linenos">142</span></a> <span class="k">return</span> <span class="n">cte</span> -</span><span id="L-143"><a href="#L-143"><span class="linenos">143</span></a> -</span><span id="L-144"><a href="#L-144"><span class="linenos">144</span></a> -</span><span id="L-145"><a href="#L-145"><span class="linenos">145</span></a><span class="k">def</span> <span class="nf">_eliminate_cte</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">):</span> -</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a> <span class="n">parent</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span> -</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a> <span class="n">name</span><span class="p">,</span> <span class="n">cte</span> <span class="o">=</span> <span class="n">_new_cte</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">)</span> -</span><span id="L-148"><a href="#L-148"><span class="linenos">148</span></a> -</span><span id="L-149"><a href="#L-149"><span class="linenos">149</span></a> <span class="n">with_</span> <span class="o">=</span> <span class="n">parent</span><span class="o">.</span><span class="n">parent</span> -</span><span id="L-150"><a href="#L-150"><span class="linenos">150</span></a> <span class="n">parent</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span> -</span><span id="L-151"><a href="#L-151"><span class="linenos">151</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">with_</span><span class="o">.</span><span class="n">expressions</span><span class="p">:</span> -</span><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a> <span class="n">with_</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span> -</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a> -</span><span id="L-154"><a href="#L-154"><span class="linenos">154</span></a> <span class="c1"># Rename references to this CTE</span> -</span><span id="L-155"><a href="#L-155"><span class="linenos">155</span></a> <span class="k">for</span> <span class="n">child_scope</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">traverse</span><span class="p">():</span> -</span><span id="L-156"><a href="#L-156"><span class="linenos">156</span></a> <span class="k">for</span> <span class="n">table</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">child_scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> -</span><span id="L-157"><a href="#L-157"><span class="linenos">157</span></a> <span class="k">if</span> <span class="n">source</span> <span class="ow">is</span> <span class="n">scope</span><span class="p">:</span> -</span><span id="L-158"><a href="#L-158"><span class="linenos">158</span></a> <span class="n">new_table</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">alias_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">table_</span><span class="p">(</span><span class="n">name</span><span class="p">),</span> <span class="n">alias</span><span class="o">=</span><span class="n">table</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">)</span> -</span><span id="L-159"><a href="#L-159"><span class="linenos">159</span></a> <span class="n">table</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">new_table</span><span class="p">)</span> +</span><span id="L-142"><a href="#L-142"><span class="linenos">142</span></a> +</span><span id="L-143"><a href="#L-143"><span class="linenos">143</span></a><span class="k">def</span> <span class="nf">_eliminate_cte</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">):</span> +</span><span id="L-144"><a href="#L-144"><span class="linenos">144</span></a> <span class="n">parent</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span> +</span><span id="L-145"><a href="#L-145"><span class="linenos">145</span></a> <span class="n">name</span><span class="p">,</span> <span class="n">cte</span> <span class="o">=</span> <span class="n">_new_cte</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">)</span> +</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a> +</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a> <span class="n">with_</span> <span class="o">=</span> <span class="n">parent</span><span class="o">.</span><span class="n">parent</span> +</span><span id="L-148"><a href="#L-148"><span class="linenos">148</span></a> <span class="n">parent</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span> +</span><span id="L-149"><a href="#L-149"><span class="linenos">149</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">with_</span><span class="o">.</span><span class="n">expressions</span><span class="p">:</span> +</span><span id="L-150"><a href="#L-150"><span class="linenos">150</span></a> <span class="n">with_</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span> +</span><span id="L-151"><a href="#L-151"><span class="linenos">151</span></a> +</span><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a> <span class="c1"># Rename references to this CTE</span> +</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a> <span class="k">for</span> <span class="n">child_scope</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">traverse</span><span class="p">():</span> +</span><span id="L-154"><a href="#L-154"><span class="linenos">154</span></a> <span class="k">for</span> <span class="n">table</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">child_scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> +</span><span id="L-155"><a href="#L-155"><span class="linenos">155</span></a> <span class="k">if</span> <span class="n">source</span> <span class="ow">is</span> <span class="n">scope</span><span class="p">:</span> +</span><span id="L-156"><a href="#L-156"><span class="linenos">156</span></a> <span class="n">new_table</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">alias_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">table_</span><span class="p">(</span><span class="n">name</span><span class="p">),</span> <span class="n">alias</span><span class="o">=</span><span class="n">table</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">)</span> +</span><span id="L-157"><a href="#L-157"><span class="linenos">157</span></a> <span class="n">table</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">new_table</span><span class="p">)</span> +</span><span id="L-158"><a href="#L-158"><span class="linenos">158</span></a> +</span><span id="L-159"><a href="#L-159"><span class="linenos">159</span></a> <span class="k">return</span> <span class="n">cte</span> </span><span id="L-160"><a href="#L-160"><span class="linenos">160</span></a> -</span><span id="L-161"><a href="#L-161"><span class="linenos">161</span></a> <span class="k">return</span> <span class="n">cte</span> -</span><span id="L-162"><a href="#L-162"><span class="linenos">162</span></a> -</span><span id="L-163"><a href="#L-163"><span class="linenos">163</span></a> -</span><span id="L-164"><a href="#L-164"><span class="linenos">164</span></a><span class="k">def</span> <span class="nf">_new_cte</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">):</span> -</span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-166"><a href="#L-166"><span class="linenos">166</span></a><span class="sd"> Returns:</span> -</span><span id="L-167"><a href="#L-167"><span class="linenos">167</span></a><span class="sd"> tuple of (name, cte)</span> -</span><span id="L-168"><a href="#L-168"><span class="linenos">168</span></a><span class="sd"> where `name` is a new name for this CTE in the root scope and `cte` is a new CTE instance.</span> -</span><span id="L-169"><a href="#L-169"><span class="linenos">169</span></a><span class="sd"> If this CTE duplicates an existing CTE, `cte` will be None.</span> -</span><span id="L-170"><a href="#L-170"><span class="linenos">170</span></a><span class="sd"> """</span> -</span><span id="L-171"><a href="#L-171"><span class="linenos">171</span></a> <span class="n">duplicate_cte_alias</span> <span class="o">=</span> <span class="n">existing_ctes</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-172"><a href="#L-172"><span class="linenos">172</span></a> <span class="n">parent</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span> -</span><span id="L-173"><a href="#L-173"><span class="linenos">173</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">parent</span><span class="o">.</span><span class="n">alias</span> -</span><span id="L-174"><a href="#L-174"><span class="linenos">174</span></a> -</span><span id="L-175"><a href="#L-175"><span class="linenos">175</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">name</span><span class="p">:</span> -</span><span id="L-176"><a href="#L-176"><span class="linenos">176</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">find_new_name</span><span class="p">(</span><span class="n">taken</span><span class="o">=</span><span class="n">taken</span><span class="p">,</span> <span class="n">base</span><span class="o">=</span><span class="s2">"cte"</span><span class="p">)</span> -</span><span id="L-177"><a href="#L-177"><span class="linenos">177</span></a> -</span><span id="L-178"><a href="#L-178"><span class="linenos">178</span></a> <span class="k">if</span> <span class="n">duplicate_cte_alias</span><span class="p">:</span> -</span><span id="L-179"><a href="#L-179"><span class="linenos">179</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">duplicate_cte_alias</span> -</span><span id="L-180"><a href="#L-180"><span class="linenos">180</span></a> <span class="k">elif</span> <span class="n">taken</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">name</span><span class="p">):</span> -</span><span id="L-181"><a href="#L-181"><span class="linenos">181</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">find_new_name</span><span class="p">(</span><span class="n">taken</span><span class="o">=</span><span class="n">taken</span><span class="p">,</span> <span class="n">base</span><span class="o">=</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-161"><a href="#L-161"><span class="linenos">161</span></a> +</span><span id="L-162"><a href="#L-162"><span class="linenos">162</span></a><span class="k">def</span> <span class="nf">_new_cte</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">):</span> +</span><span id="L-163"><a href="#L-163"><span class="linenos">163</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-164"><a href="#L-164"><span class="linenos">164</span></a><span class="sd"> Returns:</span> +</span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a><span class="sd"> tuple of (name, cte)</span> +</span><span id="L-166"><a href="#L-166"><span class="linenos">166</span></a><span class="sd"> where `name` is a new name for this CTE in the root scope and `cte` is a new CTE instance.</span> +</span><span id="L-167"><a href="#L-167"><span class="linenos">167</span></a><span class="sd"> If this CTE duplicates an existing CTE, `cte` will be None.</span> +</span><span id="L-168"><a href="#L-168"><span class="linenos">168</span></a><span class="sd"> """</span> +</span><span id="L-169"><a href="#L-169"><span class="linenos">169</span></a> <span class="n">duplicate_cte_alias</span> <span class="o">=</span> <span class="n">existing_ctes</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">)</span> +</span><span id="L-170"><a href="#L-170"><span class="linenos">170</span></a> <span class="n">parent</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span> +</span><span id="L-171"><a href="#L-171"><span class="linenos">171</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">parent</span><span class="o">.</span><span class="n">alias</span> +</span><span id="L-172"><a href="#L-172"><span class="linenos">172</span></a> +</span><span id="L-173"><a href="#L-173"><span class="linenos">173</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">name</span><span class="p">:</span> +</span><span id="L-174"><a href="#L-174"><span class="linenos">174</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">find_new_name</span><span class="p">(</span><span class="n">taken</span><span class="o">=</span><span class="n">taken</span><span class="p">,</span> <span class="n">base</span><span class="o">=</span><span class="s2">"cte"</span><span class="p">)</span> +</span><span id="L-175"><a href="#L-175"><span class="linenos">175</span></a> +</span><span id="L-176"><a href="#L-176"><span class="linenos">176</span></a> <span class="k">if</span> <span class="n">duplicate_cte_alias</span><span class="p">:</span> +</span><span id="L-177"><a href="#L-177"><span class="linenos">177</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">duplicate_cte_alias</span> +</span><span id="L-178"><a href="#L-178"><span class="linenos">178</span></a> <span class="k">elif</span> <span class="n">taken</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">name</span><span class="p">):</span> +</span><span id="L-179"><a href="#L-179"><span class="linenos">179</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">find_new_name</span><span class="p">(</span><span class="n">taken</span><span class="o">=</span><span class="n">taken</span><span class="p">,</span> <span class="n">base</span><span class="o">=</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-180"><a href="#L-180"><span class="linenos">180</span></a> +</span><span id="L-181"><a href="#L-181"><span class="linenos">181</span></a> <span class="n">taken</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">scope</span> </span><span id="L-182"><a href="#L-182"><span class="linenos">182</span></a> -</span><span id="L-183"><a href="#L-183"><span class="linenos">183</span></a> <span class="n">taken</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">scope</span> -</span><span id="L-184"><a href="#L-184"><span class="linenos">184</span></a> -</span><span id="L-185"><a href="#L-185"><span class="linenos">185</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">duplicate_cte_alias</span><span class="p">:</span> -</span><span id="L-186"><a href="#L-186"><span class="linenos">186</span></a> <span class="n">existing_ctes</span><span class="p">[</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">]</span> <span class="o">=</span> <span class="n">name</span> -</span><span id="L-187"><a href="#L-187"><span class="linenos">187</span></a> <span class="n">cte</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">CTE</span><span class="p">(</span> -</span><span id="L-188"><a href="#L-188"><span class="linenos">188</span></a> <span class="n">this</span><span class="o">=</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> -</span><span id="L-189"><a href="#L-189"><span class="linenos">189</span></a> <span class="n">alias</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">name</span><span class="p">)),</span> -</span><span id="L-190"><a href="#L-190"><span class="linenos">190</span></a> <span class="p">)</span> -</span><span id="L-191"><a href="#L-191"><span class="linenos">191</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-192"><a href="#L-192"><span class="linenos">192</span></a> <span class="n">cte</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-193"><a href="#L-193"><span class="linenos">193</span></a> <span class="k">return</span> <span class="n">name</span><span class="p">,</span> <span class="n">cte</span> +</span><span id="L-183"><a href="#L-183"><span class="linenos">183</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">duplicate_cte_alias</span><span class="p">:</span> +</span><span id="L-184"><a href="#L-184"><span class="linenos">184</span></a> <span class="n">existing_ctes</span><span class="p">[</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">]</span> <span class="o">=</span> <span class="n">name</span> +</span><span id="L-185"><a href="#L-185"><span class="linenos">185</span></a> <span class="n">cte</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">CTE</span><span class="p">(</span> +</span><span id="L-186"><a href="#L-186"><span class="linenos">186</span></a> <span class="n">this</span><span class="o">=</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> +</span><span id="L-187"><a href="#L-187"><span class="linenos">187</span></a> <span class="n">alias</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">name</span><span class="p">)),</span> +</span><span id="L-188"><a href="#L-188"><span class="linenos">188</span></a> <span class="p">)</span> +</span><span id="L-189"><a href="#L-189"><span class="linenos">189</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-190"><a href="#L-190"><span class="linenos">190</span></a> <span class="n">cte</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-191"><a href="#L-191"><span class="linenos">191</span></a> <span class="k">return</span> <span class="n">name</span><span class="p">,</span> <span class="n">cte</span> </span></pre></div> @@ -264,91 +262,90 @@ </div> <a class="headerlink" href="#eliminate_subqueries"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="eliminate_subqueries-10"><a href="#eliminate_subqueries-10"><span class="linenos">10</span></a><span class="k">def</span> <span class="nf">eliminate_subqueries</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="eliminate_subqueries-11"><a href="#eliminate_subqueries-11"><span class="linenos">11</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="eliminate_subqueries-12"><a href="#eliminate_subqueries-12"><span class="linenos">12</span></a><span class="sd"> Rewrite derived tables as CTES, deduplicating if possible.</span> -</span><span id="eliminate_subqueries-13"><a href="#eliminate_subqueries-13"><span class="linenos">13</span></a> -</span><span id="eliminate_subqueries-14"><a href="#eliminate_subqueries-14"><span class="linenos">14</span></a><span class="sd"> Example:</span> -</span><span id="eliminate_subqueries-15"><a href="#eliminate_subqueries-15"><span class="linenos">15</span></a><span class="sd"> >>> import sqlglot</span> -</span><span id="eliminate_subqueries-16"><a href="#eliminate_subqueries-16"><span class="linenos">16</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT a FROM (SELECT * FROM x) AS y")</span> -</span><span id="eliminate_subqueries-17"><a href="#eliminate_subqueries-17"><span class="linenos">17</span></a><span class="sd"> >>> eliminate_subqueries(expression).sql()</span> -</span><span id="eliminate_subqueries-18"><a href="#eliminate_subqueries-18"><span class="linenos">18</span></a><span class="sd"> 'WITH y AS (SELECT * FROM x) SELECT a FROM y AS y'</span> -</span><span id="eliminate_subqueries-19"><a href="#eliminate_subqueries-19"><span class="linenos">19</span></a> -</span><span id="eliminate_subqueries-20"><a href="#eliminate_subqueries-20"><span class="linenos">20</span></a><span class="sd"> This also deduplicates common subqueries:</span> -</span><span id="eliminate_subqueries-21"><a href="#eliminate_subqueries-21"><span class="linenos">21</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT a FROM (SELECT * FROM x) AS y JOIN (SELECT * FROM x) AS z")</span> -</span><span id="eliminate_subqueries-22"><a href="#eliminate_subqueries-22"><span class="linenos">22</span></a><span class="sd"> >>> eliminate_subqueries(expression).sql()</span> -</span><span id="eliminate_subqueries-23"><a href="#eliminate_subqueries-23"><span class="linenos">23</span></a><span class="sd"> 'WITH y AS (SELECT * FROM x) SELECT a FROM y AS y JOIN y AS z'</span> -</span><span id="eliminate_subqueries-24"><a href="#eliminate_subqueries-24"><span class="linenos">24</span></a> -</span><span id="eliminate_subqueries-25"><a href="#eliminate_subqueries-25"><span class="linenos">25</span></a><span class="sd"> Args:</span> -</span><span id="eliminate_subqueries-26"><a href="#eliminate_subqueries-26"><span class="linenos">26</span></a><span class="sd"> expression (sqlglot.Expression): expression</span> -</span><span id="eliminate_subqueries-27"><a href="#eliminate_subqueries-27"><span class="linenos">27</span></a><span class="sd"> Returns:</span> -</span><span id="eliminate_subqueries-28"><a href="#eliminate_subqueries-28"><span class="linenos">28</span></a><span class="sd"> sqlglot.Expression: expression</span> -</span><span id="eliminate_subqueries-29"><a href="#eliminate_subqueries-29"><span class="linenos">29</span></a><span class="sd"> """</span> -</span><span id="eliminate_subqueries-30"><a href="#eliminate_subqueries-30"><span class="linenos">30</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">):</span> -</span><span id="eliminate_subqueries-31"><a href="#eliminate_subqueries-31"><span class="linenos">31</span></a> <span class="c1"># It's possible to have subqueries at the root, e.g. (SELECT * FROM x) LIMIT 1</span> -</span><span id="eliminate_subqueries-32"><a href="#eliminate_subqueries-32"><span class="linenos">32</span></a> <span class="n">eliminate_subqueries</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> -</span><span id="eliminate_subqueries-33"><a href="#eliminate_subqueries-33"><span class="linenos">33</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="eliminate_subqueries-34"><a href="#eliminate_subqueries-34"><span class="linenos">34</span></a> -</span><span id="eliminate_subqueries-35"><a href="#eliminate_subqueries-35"><span class="linenos">35</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="eliminate_subqueries-36"><a href="#eliminate_subqueries-36"><span class="linenos">36</span></a> <span class="n">root</span> <span class="o">=</span> <span class="n">build_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="eliminate_subqueries-37"><a href="#eliminate_subqueries-37"><span class="linenos">37</span></a> -</span><span id="eliminate_subqueries-38"><a href="#eliminate_subqueries-38"><span class="linenos">38</span></a> <span class="c1"># Map of alias->Scope|Table</span> -</span><span id="eliminate_subqueries-39"><a href="#eliminate_subqueries-39"><span class="linenos">39</span></a> <span class="c1"># These are all aliases that are already used in the expression.</span> -</span><span id="eliminate_subqueries-40"><a href="#eliminate_subqueries-40"><span class="linenos">40</span></a> <span class="c1"># We don't want to create new CTEs that conflict with these names.</span> -</span><span id="eliminate_subqueries-41"><a href="#eliminate_subqueries-41"><span class="linenos">41</span></a> <span class="n">taken</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="eliminate_subqueries-42"><a href="#eliminate_subqueries-42"><span class="linenos">42</span></a> -</span><span id="eliminate_subqueries-43"><a href="#eliminate_subqueries-43"><span class="linenos">43</span></a> <span class="c1"># All CTE aliases in the root scope are taken</span> -</span><span id="eliminate_subqueries-44"><a href="#eliminate_subqueries-44"><span class="linenos">44</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">root</span><span class="o">.</span><span class="n">cte_scopes</span><span class="p">:</span> -</span><span id="eliminate_subqueries-45"><a href="#eliminate_subqueries-45"><span class="linenos">45</span></a> <span class="n">taken</span><span class="p">[</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">alias</span><span class="p">]</span> <span class="o">=</span> <span class="n">scope</span> -</span><span id="eliminate_subqueries-46"><a href="#eliminate_subqueries-46"><span class="linenos">46</span></a> -</span><span id="eliminate_subqueries-47"><a href="#eliminate_subqueries-47"><span class="linenos">47</span></a> <span class="c1"># All table names are taken</span> -</span><span id="eliminate_subqueries-48"><a href="#eliminate_subqueries-48"><span class="linenos">48</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">root</span><span class="o">.</span><span class="n">traverse</span><span class="p">():</span> -</span><span id="eliminate_subqueries-49"><a href="#eliminate_subqueries-49"><span class="linenos">49</span></a> <span class="n">taken</span><span class="o">.</span><span class="n">update</span><span class="p">(</span> -</span><span id="eliminate_subqueries-50"><a href="#eliminate_subqueries-50"><span class="linenos">50</span></a> <span class="p">{</span> -</span><span id="eliminate_subqueries-51"><a href="#eliminate_subqueries-51"><span class="linenos">51</span></a> <span class="n">source</span><span class="o">.</span><span class="n">name</span><span class="p">:</span> <span class="n">source</span> -</span><span id="eliminate_subqueries-52"><a href="#eliminate_subqueries-52"><span class="linenos">52</span></a> <span class="k">for</span> <span class="n">_</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> -</span><span id="eliminate_subqueries-53"><a href="#eliminate_subqueries-53"><span class="linenos">53</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">)</span> -</span><span id="eliminate_subqueries-54"><a href="#eliminate_subqueries-54"><span class="linenos">54</span></a> <span class="p">}</span> -</span><span id="eliminate_subqueries-55"><a href="#eliminate_subqueries-55"><span class="linenos">55</span></a> <span class="p">)</span> -</span><span id="eliminate_subqueries-56"><a href="#eliminate_subqueries-56"><span class="linenos">56</span></a> -</span><span id="eliminate_subqueries-57"><a href="#eliminate_subqueries-57"><span class="linenos">57</span></a> <span class="c1"># Map of Expression->alias</span> -</span><span id="eliminate_subqueries-58"><a href="#eliminate_subqueries-58"><span class="linenos">58</span></a> <span class="c1"># Existing CTES in the root expression. We'll use this for deduplication.</span> -</span><span id="eliminate_subqueries-59"><a href="#eliminate_subqueries-59"><span class="linenos">59</span></a> <span class="n">existing_ctes</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="eliminate_subqueries-60"><a href="#eliminate_subqueries-60"><span class="linenos">60</span></a> -</span><span id="eliminate_subqueries-61"><a href="#eliminate_subqueries-61"><span class="linenos">61</span></a> <span class="n">with_</span> <span class="o">=</span> <span class="n">root</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"with"</span><span class="p">)</span> -</span><span id="eliminate_subqueries-62"><a href="#eliminate_subqueries-62"><span class="linenos">62</span></a> <span class="n">recursive</span> <span class="o">=</span> <span class="kc">False</span> -</span><span id="eliminate_subqueries-63"><a href="#eliminate_subqueries-63"><span class="linenos">63</span></a> <span class="k">if</span> <span class="n">with_</span><span class="p">:</span> -</span><span id="eliminate_subqueries-64"><a href="#eliminate_subqueries-64"><span class="linenos">64</span></a> <span class="n">recursive</span> <span class="o">=</span> <span class="n">with_</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"recursive"</span><span class="p">)</span> -</span><span id="eliminate_subqueries-65"><a href="#eliminate_subqueries-65"><span class="linenos">65</span></a> <span class="k">for</span> <span class="n">cte</span> <span class="ow">in</span> <span class="n">with_</span><span class="o">.</span><span class="n">expressions</span><span class="p">:</span> -</span><span id="eliminate_subqueries-66"><a href="#eliminate_subqueries-66"><span class="linenos">66</span></a> <span class="n">existing_ctes</span><span class="p">[</span><span class="n">cte</span><span class="o">.</span><span class="n">this</span><span class="p">]</span> <span class="o">=</span> <span class="n">cte</span><span class="o">.</span><span class="n">alias</span> -</span><span id="eliminate_subqueries-67"><a href="#eliminate_subqueries-67"><span class="linenos">67</span></a> <span class="n">new_ctes</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="eliminate_subqueries-68"><a href="#eliminate_subqueries-68"><span class="linenos">68</span></a> -</span><span id="eliminate_subqueries-69"><a href="#eliminate_subqueries-69"><span class="linenos">69</span></a> <span class="c1"># We're adding more CTEs, but we want to maintain the DAG order.</span> -</span><span id="eliminate_subqueries-70"><a href="#eliminate_subqueries-70"><span class="linenos">70</span></a> <span class="c1"># Derived tables within an existing CTE need to come before the existing CTE.</span> -</span><span id="eliminate_subqueries-71"><a href="#eliminate_subqueries-71"><span class="linenos">71</span></a> <span class="k">for</span> <span class="n">cte_scope</span> <span class="ow">in</span> <span class="n">root</span><span class="o">.</span><span class="n">cte_scopes</span><span class="p">:</span> -</span><span id="eliminate_subqueries-72"><a href="#eliminate_subqueries-72"><span class="linenos">72</span></a> <span class="c1"># Append all the new CTEs from this existing CTE</span> -</span><span id="eliminate_subqueries-73"><a href="#eliminate_subqueries-73"><span class="linenos">73</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">cte_scope</span><span class="o">.</span><span class="n">traverse</span><span class="p">():</span> -</span><span id="eliminate_subqueries-74"><a href="#eliminate_subqueries-74"><span class="linenos">74</span></a> <span class="k">if</span> <span class="n">scope</span> <span class="ow">is</span> <span class="n">cte_scope</span><span class="p">:</span> -</span><span id="eliminate_subqueries-75"><a href="#eliminate_subqueries-75"><span class="linenos">75</span></a> <span class="c1"># Don't try to eliminate this CTE itself</span> -</span><span id="eliminate_subqueries-76"><a href="#eliminate_subqueries-76"><span class="linenos">76</span></a> <span class="k">continue</span> -</span><span id="eliminate_subqueries-77"><a href="#eliminate_subqueries-77"><span class="linenos">77</span></a> <span class="n">new_cte</span> <span class="o">=</span> <span class="n">_eliminate</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">)</span> -</span><span id="eliminate_subqueries-78"><a href="#eliminate_subqueries-78"><span class="linenos">78</span></a> <span class="k">if</span> <span class="n">new_cte</span><span class="p">:</span> -</span><span id="eliminate_subqueries-79"><a href="#eliminate_subqueries-79"><span class="linenos">79</span></a> <span class="n">new_ctes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">new_cte</span><span class="p">)</span> -</span><span id="eliminate_subqueries-80"><a href="#eliminate_subqueries-80"><span class="linenos">80</span></a> -</span><span id="eliminate_subqueries-81"><a href="#eliminate_subqueries-81"><span class="linenos">81</span></a> <span class="c1"># Append the existing CTE itself</span> -</span><span id="eliminate_subqueries-82"><a href="#eliminate_subqueries-82"><span class="linenos">82</span></a> <span class="n">new_ctes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">cte_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span><span class="p">)</span> -</span><span id="eliminate_subqueries-83"><a href="#eliminate_subqueries-83"><span class="linenos">83</span></a> -</span><span id="eliminate_subqueries-84"><a href="#eliminate_subqueries-84"><span class="linenos">84</span></a> <span class="c1"># Now append the rest</span> -</span><span id="eliminate_subqueries-85"><a href="#eliminate_subqueries-85"><span class="linenos">85</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="n">root</span><span class="o">.</span><span class="n">union_scopes</span><span class="p">,</span> <span class="n">root</span><span class="o">.</span><span class="n">subquery_scopes</span><span class="p">,</span> <span class="n">root</span><span class="o">.</span><span class="n">table_scopes</span><span class="p">):</span> -</span><span id="eliminate_subqueries-86"><a href="#eliminate_subqueries-86"><span class="linenos">86</span></a> <span class="k">for</span> <span class="n">child_scope</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">traverse</span><span class="p">():</span> -</span><span id="eliminate_subqueries-87"><a href="#eliminate_subqueries-87"><span class="linenos">87</span></a> <span class="n">new_cte</span> <span class="o">=</span> <span class="n">_eliminate</span><span class="p">(</span><span class="n">child_scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">)</span> -</span><span id="eliminate_subqueries-88"><a href="#eliminate_subqueries-88"><span class="linenos">88</span></a> <span class="k">if</span> <span class="n">new_cte</span><span class="p">:</span> -</span><span id="eliminate_subqueries-89"><a href="#eliminate_subqueries-89"><span class="linenos">89</span></a> <span class="n">new_ctes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">new_cte</span><span class="p">)</span> -</span><span id="eliminate_subqueries-90"><a href="#eliminate_subqueries-90"><span class="linenos">90</span></a> -</span><span id="eliminate_subqueries-91"><a href="#eliminate_subqueries-91"><span class="linenos">91</span></a> <span class="k">if</span> <span class="n">new_ctes</span><span class="p">:</span> -</span><span id="eliminate_subqueries-92"><a href="#eliminate_subqueries-92"><span class="linenos">92</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"with"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">With</span><span class="p">(</span><span class="n">expressions</span><span class="o">=</span><span class="n">new_ctes</span><span class="p">,</span> <span class="n">recursive</span><span class="o">=</span><span class="n">recursive</span><span class="p">))</span> -</span><span id="eliminate_subqueries-93"><a href="#eliminate_subqueries-93"><span class="linenos">93</span></a> -</span><span id="eliminate_subqueries-94"><a href="#eliminate_subqueries-94"><span class="linenos">94</span></a> <span class="k">return</span> <span class="n">expression</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="eliminate_subqueries-9"><a href="#eliminate_subqueries-9"><span class="linenos"> 9</span></a><span class="k">def</span> <span class="nf">eliminate_subqueries</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="eliminate_subqueries-10"><a href="#eliminate_subqueries-10"><span class="linenos">10</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="eliminate_subqueries-11"><a href="#eliminate_subqueries-11"><span class="linenos">11</span></a><span class="sd"> Rewrite derived tables as CTES, deduplicating if possible.</span> +</span><span id="eliminate_subqueries-12"><a href="#eliminate_subqueries-12"><span class="linenos">12</span></a> +</span><span id="eliminate_subqueries-13"><a href="#eliminate_subqueries-13"><span class="linenos">13</span></a><span class="sd"> Example:</span> +</span><span id="eliminate_subqueries-14"><a href="#eliminate_subqueries-14"><span class="linenos">14</span></a><span class="sd"> >>> import sqlglot</span> +</span><span id="eliminate_subqueries-15"><a href="#eliminate_subqueries-15"><span class="linenos">15</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT a FROM (SELECT * FROM x) AS y")</span> +</span><span id="eliminate_subqueries-16"><a href="#eliminate_subqueries-16"><span class="linenos">16</span></a><span class="sd"> >>> eliminate_subqueries(expression).sql()</span> +</span><span id="eliminate_subqueries-17"><a href="#eliminate_subqueries-17"><span class="linenos">17</span></a><span class="sd"> 'WITH y AS (SELECT * FROM x) SELECT a FROM y AS y'</span> +</span><span id="eliminate_subqueries-18"><a href="#eliminate_subqueries-18"><span class="linenos">18</span></a> +</span><span id="eliminate_subqueries-19"><a href="#eliminate_subqueries-19"><span class="linenos">19</span></a><span class="sd"> This also deduplicates common subqueries:</span> +</span><span id="eliminate_subqueries-20"><a href="#eliminate_subqueries-20"><span class="linenos">20</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT a FROM (SELECT * FROM x) AS y JOIN (SELECT * FROM x) AS z")</span> +</span><span id="eliminate_subqueries-21"><a href="#eliminate_subqueries-21"><span class="linenos">21</span></a><span class="sd"> >>> eliminate_subqueries(expression).sql()</span> +</span><span id="eliminate_subqueries-22"><a href="#eliminate_subqueries-22"><span class="linenos">22</span></a><span class="sd"> 'WITH y AS (SELECT * FROM x) SELECT a FROM y AS y JOIN y AS z'</span> +</span><span id="eliminate_subqueries-23"><a href="#eliminate_subqueries-23"><span class="linenos">23</span></a> +</span><span id="eliminate_subqueries-24"><a href="#eliminate_subqueries-24"><span class="linenos">24</span></a><span class="sd"> Args:</span> +</span><span id="eliminate_subqueries-25"><a href="#eliminate_subqueries-25"><span class="linenos">25</span></a><span class="sd"> expression (sqlglot.Expression): expression</span> +</span><span id="eliminate_subqueries-26"><a href="#eliminate_subqueries-26"><span class="linenos">26</span></a><span class="sd"> Returns:</span> +</span><span id="eliminate_subqueries-27"><a href="#eliminate_subqueries-27"><span class="linenos">27</span></a><span class="sd"> sqlglot.Expression: expression</span> +</span><span id="eliminate_subqueries-28"><a href="#eliminate_subqueries-28"><span class="linenos">28</span></a><span class="sd"> """</span> +</span><span id="eliminate_subqueries-29"><a href="#eliminate_subqueries-29"><span class="linenos">29</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">):</span> +</span><span id="eliminate_subqueries-30"><a href="#eliminate_subqueries-30"><span class="linenos">30</span></a> <span class="c1"># It's possible to have subqueries at the root, e.g. (SELECT * FROM x) LIMIT 1</span> +</span><span id="eliminate_subqueries-31"><a href="#eliminate_subqueries-31"><span class="linenos">31</span></a> <span class="n">eliminate_subqueries</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> +</span><span id="eliminate_subqueries-32"><a href="#eliminate_subqueries-32"><span class="linenos">32</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="eliminate_subqueries-33"><a href="#eliminate_subqueries-33"><span class="linenos">33</span></a> +</span><span id="eliminate_subqueries-34"><a href="#eliminate_subqueries-34"><span class="linenos">34</span></a> <span class="n">root</span> <span class="o">=</span> <span class="n">build_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="eliminate_subqueries-35"><a href="#eliminate_subqueries-35"><span class="linenos">35</span></a> +</span><span id="eliminate_subqueries-36"><a href="#eliminate_subqueries-36"><span class="linenos">36</span></a> <span class="c1"># Map of alias->Scope|Table</span> +</span><span id="eliminate_subqueries-37"><a href="#eliminate_subqueries-37"><span class="linenos">37</span></a> <span class="c1"># These are all aliases that are already used in the expression.</span> +</span><span id="eliminate_subqueries-38"><a href="#eliminate_subqueries-38"><span class="linenos">38</span></a> <span class="c1"># We don't want to create new CTEs that conflict with these names.</span> +</span><span id="eliminate_subqueries-39"><a href="#eliminate_subqueries-39"><span class="linenos">39</span></a> <span class="n">taken</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="eliminate_subqueries-40"><a href="#eliminate_subqueries-40"><span class="linenos">40</span></a> +</span><span id="eliminate_subqueries-41"><a href="#eliminate_subqueries-41"><span class="linenos">41</span></a> <span class="c1"># All CTE aliases in the root scope are taken</span> +</span><span id="eliminate_subqueries-42"><a href="#eliminate_subqueries-42"><span class="linenos">42</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">root</span><span class="o">.</span><span class="n">cte_scopes</span><span class="p">:</span> +</span><span id="eliminate_subqueries-43"><a href="#eliminate_subqueries-43"><span class="linenos">43</span></a> <span class="n">taken</span><span class="p">[</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">alias</span><span class="p">]</span> <span class="o">=</span> <span class="n">scope</span> +</span><span id="eliminate_subqueries-44"><a href="#eliminate_subqueries-44"><span class="linenos">44</span></a> +</span><span id="eliminate_subqueries-45"><a href="#eliminate_subqueries-45"><span class="linenos">45</span></a> <span class="c1"># All table names are taken</span> +</span><span id="eliminate_subqueries-46"><a href="#eliminate_subqueries-46"><span class="linenos">46</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">root</span><span class="o">.</span><span class="n">traverse</span><span class="p">():</span> +</span><span id="eliminate_subqueries-47"><a href="#eliminate_subqueries-47"><span class="linenos">47</span></a> <span class="n">taken</span><span class="o">.</span><span class="n">update</span><span class="p">(</span> +</span><span id="eliminate_subqueries-48"><a href="#eliminate_subqueries-48"><span class="linenos">48</span></a> <span class="p">{</span> +</span><span id="eliminate_subqueries-49"><a href="#eliminate_subqueries-49"><span class="linenos">49</span></a> <span class="n">source</span><span class="o">.</span><span class="n">name</span><span class="p">:</span> <span class="n">source</span> +</span><span id="eliminate_subqueries-50"><a href="#eliminate_subqueries-50"><span class="linenos">50</span></a> <span class="k">for</span> <span class="n">_</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> +</span><span id="eliminate_subqueries-51"><a href="#eliminate_subqueries-51"><span class="linenos">51</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">)</span> +</span><span id="eliminate_subqueries-52"><a href="#eliminate_subqueries-52"><span class="linenos">52</span></a> <span class="p">}</span> +</span><span id="eliminate_subqueries-53"><a href="#eliminate_subqueries-53"><span class="linenos">53</span></a> <span class="p">)</span> +</span><span id="eliminate_subqueries-54"><a href="#eliminate_subqueries-54"><span class="linenos">54</span></a> +</span><span id="eliminate_subqueries-55"><a href="#eliminate_subqueries-55"><span class="linenos">55</span></a> <span class="c1"># Map of Expression->alias</span> +</span><span id="eliminate_subqueries-56"><a href="#eliminate_subqueries-56"><span class="linenos">56</span></a> <span class="c1"># Existing CTES in the root expression. We'll use this for deduplication.</span> +</span><span id="eliminate_subqueries-57"><a href="#eliminate_subqueries-57"><span class="linenos">57</span></a> <span class="n">existing_ctes</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="eliminate_subqueries-58"><a href="#eliminate_subqueries-58"><span class="linenos">58</span></a> +</span><span id="eliminate_subqueries-59"><a href="#eliminate_subqueries-59"><span class="linenos">59</span></a> <span class="n">with_</span> <span class="o">=</span> <span class="n">root</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"with"</span><span class="p">)</span> +</span><span id="eliminate_subqueries-60"><a href="#eliminate_subqueries-60"><span class="linenos">60</span></a> <span class="n">recursive</span> <span class="o">=</span> <span class="kc">False</span> +</span><span id="eliminate_subqueries-61"><a href="#eliminate_subqueries-61"><span class="linenos">61</span></a> <span class="k">if</span> <span class="n">with_</span><span class="p">:</span> +</span><span id="eliminate_subqueries-62"><a href="#eliminate_subqueries-62"><span class="linenos">62</span></a> <span class="n">recursive</span> <span class="o">=</span> <span class="n">with_</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"recursive"</span><span class="p">)</span> +</span><span id="eliminate_subqueries-63"><a href="#eliminate_subqueries-63"><span class="linenos">63</span></a> <span class="k">for</span> <span class="n">cte</span> <span class="ow">in</span> <span class="n">with_</span><span class="o">.</span><span class="n">expressions</span><span class="p">:</span> +</span><span id="eliminate_subqueries-64"><a href="#eliminate_subqueries-64"><span class="linenos">64</span></a> <span class="n">existing_ctes</span><span class="p">[</span><span class="n">cte</span><span class="o">.</span><span class="n">this</span><span class="p">]</span> <span class="o">=</span> <span class="n">cte</span><span class="o">.</span><span class="n">alias</span> +</span><span id="eliminate_subqueries-65"><a href="#eliminate_subqueries-65"><span class="linenos">65</span></a> <span class="n">new_ctes</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="eliminate_subqueries-66"><a href="#eliminate_subqueries-66"><span class="linenos">66</span></a> +</span><span id="eliminate_subqueries-67"><a href="#eliminate_subqueries-67"><span class="linenos">67</span></a> <span class="c1"># We're adding more CTEs, but we want to maintain the DAG order.</span> +</span><span id="eliminate_subqueries-68"><a href="#eliminate_subqueries-68"><span class="linenos">68</span></a> <span class="c1"># Derived tables within an existing CTE need to come before the existing CTE.</span> +</span><span id="eliminate_subqueries-69"><a href="#eliminate_subqueries-69"><span class="linenos">69</span></a> <span class="k">for</span> <span class="n">cte_scope</span> <span class="ow">in</span> <span class="n">root</span><span class="o">.</span><span class="n">cte_scopes</span><span class="p">:</span> +</span><span id="eliminate_subqueries-70"><a href="#eliminate_subqueries-70"><span class="linenos">70</span></a> <span class="c1"># Append all the new CTEs from this existing CTE</span> +</span><span id="eliminate_subqueries-71"><a href="#eliminate_subqueries-71"><span class="linenos">71</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">cte_scope</span><span class="o">.</span><span class="n">traverse</span><span class="p">():</span> +</span><span id="eliminate_subqueries-72"><a href="#eliminate_subqueries-72"><span class="linenos">72</span></a> <span class="k">if</span> <span class="n">scope</span> <span class="ow">is</span> <span class="n">cte_scope</span><span class="p">:</span> +</span><span id="eliminate_subqueries-73"><a href="#eliminate_subqueries-73"><span class="linenos">73</span></a> <span class="c1"># Don't try to eliminate this CTE itself</span> +</span><span id="eliminate_subqueries-74"><a href="#eliminate_subqueries-74"><span class="linenos">74</span></a> <span class="k">continue</span> +</span><span id="eliminate_subqueries-75"><a href="#eliminate_subqueries-75"><span class="linenos">75</span></a> <span class="n">new_cte</span> <span class="o">=</span> <span class="n">_eliminate</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">)</span> +</span><span id="eliminate_subqueries-76"><a href="#eliminate_subqueries-76"><span class="linenos">76</span></a> <span class="k">if</span> <span class="n">new_cte</span><span class="p">:</span> +</span><span id="eliminate_subqueries-77"><a href="#eliminate_subqueries-77"><span class="linenos">77</span></a> <span class="n">new_ctes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">new_cte</span><span class="p">)</span> +</span><span id="eliminate_subqueries-78"><a href="#eliminate_subqueries-78"><span class="linenos">78</span></a> +</span><span id="eliminate_subqueries-79"><a href="#eliminate_subqueries-79"><span class="linenos">79</span></a> <span class="c1"># Append the existing CTE itself</span> +</span><span id="eliminate_subqueries-80"><a href="#eliminate_subqueries-80"><span class="linenos">80</span></a> <span class="n">new_ctes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">cte_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span><span class="p">)</span> +</span><span id="eliminate_subqueries-81"><a href="#eliminate_subqueries-81"><span class="linenos">81</span></a> +</span><span id="eliminate_subqueries-82"><a href="#eliminate_subqueries-82"><span class="linenos">82</span></a> <span class="c1"># Now append the rest</span> +</span><span id="eliminate_subqueries-83"><a href="#eliminate_subqueries-83"><span class="linenos">83</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="n">root</span><span class="o">.</span><span class="n">union_scopes</span><span class="p">,</span> <span class="n">root</span><span class="o">.</span><span class="n">subquery_scopes</span><span class="p">,</span> <span class="n">root</span><span class="o">.</span><span class="n">table_scopes</span><span class="p">):</span> +</span><span id="eliminate_subqueries-84"><a href="#eliminate_subqueries-84"><span class="linenos">84</span></a> <span class="k">for</span> <span class="n">child_scope</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">traverse</span><span class="p">():</span> +</span><span id="eliminate_subqueries-85"><a href="#eliminate_subqueries-85"><span class="linenos">85</span></a> <span class="n">new_cte</span> <span class="o">=</span> <span class="n">_eliminate</span><span class="p">(</span><span class="n">child_scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">)</span> +</span><span id="eliminate_subqueries-86"><a href="#eliminate_subqueries-86"><span class="linenos">86</span></a> <span class="k">if</span> <span class="n">new_cte</span><span class="p">:</span> +</span><span id="eliminate_subqueries-87"><a href="#eliminate_subqueries-87"><span class="linenos">87</span></a> <span class="n">new_ctes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">new_cte</span><span class="p">)</span> +</span><span id="eliminate_subqueries-88"><a href="#eliminate_subqueries-88"><span class="linenos">88</span></a> +</span><span id="eliminate_subqueries-89"><a href="#eliminate_subqueries-89"><span class="linenos">89</span></a> <span class="k">if</span> <span class="n">new_ctes</span><span class="p">:</span> +</span><span id="eliminate_subqueries-90"><a href="#eliminate_subqueries-90"><span class="linenos">90</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"with"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">With</span><span class="p">(</span><span class="n">expressions</span><span class="o">=</span><span class="n">new_ctes</span><span class="p">,</span> <span class="n">recursive</span><span class="o">=</span><span class="n">recursive</span><span class="p">))</span> +</span><span id="eliminate_subqueries-91"><a href="#eliminate_subqueries-91"><span class="linenos">91</span></a> +</span><span id="eliminate_subqueries-92"><a href="#eliminate_subqueries-92"><span class="linenos">92</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> diff --git a/docs/sqlglot/optimizer/expand_laterals.html b/docs/sqlglot/optimizer/expand_laterals.html index eaf5199..98dce0a 100644 --- a/docs/sqlglot/optimizer/expand_laterals.html +++ b/docs/sqlglot/optimizer/expand_laterals.html @@ -3,7 +3,7 @@ <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> - <meta name="generator" content="pdoc 13.0.0"/> + <meta name="generator" content="pdoc 13.0.1"/> <title>sqlglot.optimizer.expand_laterals API documentation</title> <style>/*! * Bootstrap Reboot v5.0.0 (https://getbootstrap.com/) * Copyright 2011-2021 The Bootstrap Authors * Copyright 2011-2021 Twitter, Inc. * Licensed under MIT 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(min-width:1200px){h2{font-size:2rem}}h3{font-size:calc(1.3rem + .6vw)}@media (min-width:1200px){h3{font-size:1.75rem}}h4{font-size:calc(1.275rem + .3vw)}@media (min-width:1200px){h4{font-size:1.5rem}}h5{font-size:1.25rem}h6{font-size:1rem}p{margin-top:0;margin-bottom:1rem}abbr[data-bs-original-title],abbr[title]{-webkit-text-decoration:underline dotted;text-decoration:underline dotted;cursor:help;-webkit-text-decoration-skip-ink:none;text-decoration-skip-ink:none}address{margin-bottom:1rem;font-style:normal;line-height:inherit}ol,ul{padding-left:2rem}dl,ol,ul{margin-top:0;margin-bottom:1rem}ol ol,ol ul,ul ol,ul ul{margin-bottom:0}dt{font-weight:700}dd{margin-bottom:.5rem;margin-left:0}blockquote{margin:0 0 1rem}b,strong{font-weight:bolder}small{font-size:.875em}mark{padding:.2em;background-color:#fcf8e3}sub,sup{position:relative;font-size:.75em;line-height:0;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}a{color:#0d6efd;text-decoration:underline}a:hover{color:#0a58ca}a:not([href]):not([class]),a:not([href]):not([class]):hover{color:inherit;text-decoration:none}code,kbd,pre,samp{font-family:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;font-size:1em;direction:ltr;unicode-bidi:bidi-override}pre{display:block;margin-top:0;margin-bottom:1rem;overflow:auto;font-size:.875em}pre code{font-size:inherit;color:inherit;word-break:normal}code{font-size:.875em;color:#d63384;word-wrap:break-word}a>code{color:inherit}kbd{padding:.2rem .4rem;font-size:.875em;color:#fff;background-color:#212529;border-radius:.2rem}kbd kbd{padding:0;font-size:1em;font-weight:700}figure{margin:0 0 1rem}img,svg{vertical-align:middle}table{caption-side:bottom;border-collapse:collapse}caption{padding-top:.5rem;padding-bottom:.5rem;color:#6c757d;text-align:left}th{text-align:inherit;text-align:-webkit-match-parent}tbody,td,tfoot,th,thead,tr{border-color:inherit;border-style:solid;border-width:0}label{display:inline-block}button{border-radius:0}button:focus:not(:focus-visible){outline:0}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,select{text-transform:none}[role=button]{cursor:pointer}select{word-wrap:normal}select:disabled{opacity:1}[list]::-webkit-calendar-picker-indicator{display:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]:not(:disabled),[type=reset]:not(:disabled),[type=submit]:not(:disabled),button:not(:disabled){cursor:pointer}::-moz-focus-inner{padding:0;border-style:none}textarea{resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{float:left;width:100%;padding:0;margin-bottom:.5rem;font-size:calc(1.275rem + .3vw);line-height:inherit}@media (min-width:1200px){legend{font-size:1.5rem}}legend+*{clear:left}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-fields-wrapper,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-text,::-webkit-datetime-edit-year-field{padding:0}::-webkit-inner-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:textfield}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-color-swatch-wrapper{padding:0}::file-selector-button{font:inherit}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}iframe{border:0}summary{display:list-item;cursor:pointer}progress{vertical-align:baseline}[hidden]{display:none!important}</style> @@ -28,8 +28,8 @@ - <h2>API Documentation</h2> - <ul class="memberlist"> + <h2>API Documentation</h2> + <ul class="memberlist"> <li> <a class="function" href="#expand_laterals">expand_laterals</a> </li> diff --git a/docs/sqlglot/optimizer/expand_multi_table_selects.html b/docs/sqlglot/optimizer/expand_multi_table_selects.html index 7f780ad..db8f56e 100644 --- a/docs/sqlglot/optimizer/expand_multi_table_selects.html +++ b/docs/sqlglot/optimizer/expand_multi_table_selects.html @@ -3,7 +3,7 @@ <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> - <meta name="generator" content="pdoc 13.0.0"/> + <meta name="generator" content="pdoc 13.0.1"/> <title>sqlglot.optimizer.expand_multi_table_selects API documentation</title> <style>/*! * Bootstrap Reboot v5.0.0 (https://getbootstrap.com/) * Copyright 2011-2021 The Bootstrap Authors * Copyright 2011-2021 Twitter, Inc. * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE) * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md) */*,::after,::before{box-sizing:border-box}@media (prefers-reduced-motion:no-preference){:root{scroll-behavior:smooth}}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","Liberation Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";font-size:1rem;font-weight:400;line-height:1.5;color:#212529;background-color:#fff;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}hr{margin:1rem 0;color:inherit;background-color:currentColor;border:0;opacity:.25}hr:not([size]){height:1px}h1,h2,h3,h4,h5,h6{margin-top:0;margin-bottom:.5rem;font-weight:500;line-height:1.2}h1{font-size:calc(1.375rem + 1.5vw)}@media (min-width:1200px){h1{font-size:2.5rem}}h2{font-size:calc(1.325rem + .9vw)}@media (min-width:1200px){h2{font-size:2rem}}h3{font-size:calc(1.3rem + .6vw)}@media (min-width:1200px){h3{font-size:1.75rem}}h4{font-size:calc(1.275rem + .3vw)}@media (min-width:1200px){h4{font-size:1.5rem}}h5{font-size:1.25rem}h6{font-size:1rem}p{margin-top:0;margin-bottom:1rem}abbr[data-bs-original-title],abbr[title]{-webkit-text-decoration:underline dotted;text-decoration:underline dotted;cursor:help;-webkit-text-decoration-skip-ink:none;text-decoration-skip-ink:none}address{margin-bottom:1rem;font-style:normal;line-height:inherit}ol,ul{padding-left:2rem}dl,ol,ul{margin-top:0;margin-bottom:1rem}ol ol,ol ul,ul ol,ul ul{margin-bottom:0}dt{font-weight:700}dd{margin-bottom:.5rem;margin-left:0}blockquote{margin:0 0 1rem}b,strong{font-weight:bolder}small{font-size:.875em}mark{padding:.2em;background-color:#fcf8e3}sub,sup{position:relative;font-size:.75em;line-height:0;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}a{color:#0d6efd;text-decoration:underline}a:hover{color:#0a58ca}a:not([href]):not([class]),a:not([href]):not([class]):hover{color:inherit;text-decoration:none}code,kbd,pre,samp{font-family:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;font-size:1em;direction:ltr;unicode-bidi:bidi-override}pre{display:block;margin-top:0;margin-bottom:1rem;overflow:auto;font-size:.875em}pre code{font-size:inherit;color:inherit;word-break:normal}code{font-size:.875em;color:#d63384;word-wrap:break-word}a>code{color:inherit}kbd{padding:.2rem .4rem;font-size:.875em;color:#fff;background-color:#212529;border-radius:.2rem}kbd kbd{padding:0;font-size:1em;font-weight:700}figure{margin:0 0 1rem}img,svg{vertical-align:middle}table{caption-side:bottom;border-collapse:collapse}caption{padding-top:.5rem;padding-bottom:.5rem;color:#6c757d;text-align:left}th{text-align:inherit;text-align:-webkit-match-parent}tbody,td,tfoot,th,thead,tr{border-color:inherit;border-style:solid;border-width:0}label{display:inline-block}button{border-radius:0}button:focus:not(:focus-visible){outline:0}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,select{text-transform:none}[role=button]{cursor:pointer}select{word-wrap:normal}select:disabled{opacity:1}[list]::-webkit-calendar-picker-indicator{display:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]:not(:disabled),[type=reset]:not(:disabled),[type=submit]:not(:disabled),button:not(:disabled){cursor:pointer}::-moz-focus-inner{padding:0;border-style:none}textarea{resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{float:left;width:100%;padding:0;margin-bottom:.5rem;font-size:calc(1.275rem + .3vw);line-height:inherit}@media (min-width:1200px){legend{font-size:1.5rem}}legend+*{clear:left}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-fields-wrapper,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-text,::-webkit-datetime-edit-year-field{padding:0}::-webkit-inner-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:textfield}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-color-swatch-wrapper{padding:0}::file-selector-button{font:inherit}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}iframe{border:0}summary{display:list-item;cursor:pointer}progress{vertical-align:baseline}[hidden]{display:none!important}</style> @@ -28,8 +28,8 @@ - <h2>API Documentation</h2> - <ul class="memberlist"> + <h2>API Documentation</h2> + <ul class="memberlist"> <li> <a class="function" href="#expand_multi_table_selects">expand_multi_table_selects</a> </li> diff --git a/docs/sqlglot/optimizer/isolate_table_selects.html b/docs/sqlglot/optimizer/isolate_table_selects.html index 164d720..09d0cbe 100644 --- a/docs/sqlglot/optimizer/isolate_table_selects.html +++ b/docs/sqlglot/optimizer/isolate_table_selects.html @@ -3,7 +3,7 @@ <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> - <meta name="generator" content="pdoc 13.0.0"/> + <meta name="generator" content="pdoc 13.0.1"/> <title>sqlglot.optimizer.isolate_table_selects API documentation</title> <style>/*! * Bootstrap Reboot v5.0.0 (https://getbootstrap.com/) * Copyright 2011-2021 The Bootstrap Authors * Copyright 2011-2021 Twitter, Inc. * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE) * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md) */*,::after,::before{box-sizing:border-box}@media (prefers-reduced-motion:no-preference){:root{scroll-behavior:smooth}}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","Liberation Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";font-size:1rem;font-weight:400;line-height:1.5;color:#212529;background-color:#fff;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}hr{margin:1rem 0;color:inherit;background-color:currentColor;border:0;opacity:.25}hr:not([size]){height:1px}h1,h2,h3,h4,h5,h6{margin-top:0;margin-bottom:.5rem;font-weight:500;line-height:1.2}h1{font-size:calc(1.375rem + 1.5vw)}@media (min-width:1200px){h1{font-size:2.5rem}}h2{font-size:calc(1.325rem + .9vw)}@media (min-width:1200px){h2{font-size:2rem}}h3{font-size:calc(1.3rem + .6vw)}@media (min-width:1200px){h3{font-size:1.75rem}}h4{font-size:calc(1.275rem + .3vw)}@media 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1rem}b,strong{font-weight:bolder}small{font-size:.875em}mark{padding:.2em;background-color:#fcf8e3}sub,sup{position:relative;font-size:.75em;line-height:0;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}a{color:#0d6efd;text-decoration:underline}a:hover{color:#0a58ca}a:not([href]):not([class]),a:not([href]):not([class]):hover{color:inherit;text-decoration:none}code,kbd,pre,samp{font-family:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;font-size:1em;direction:ltr;unicode-bidi:bidi-override}pre{display:block;margin-top:0;margin-bottom:1rem;overflow:auto;font-size:.875em}pre code{font-size:inherit;color:inherit;word-break:normal}code{font-size:.875em;color:#d63384;word-wrap:break-word}a>code{color:inherit}kbd{padding:.2rem .4rem;font-size:.875em;color:#fff;background-color:#212529;border-radius:.2rem}kbd kbd{padding:0;font-size:1em;font-weight:700}figure{margin:0 0 1rem}img,svg{vertical-align:middle}table{caption-side:bottom;border-collapse:collapse}caption{padding-top:.5rem;padding-bottom:.5rem;color:#6c757d;text-align:left}th{text-align:inherit;text-align:-webkit-match-parent}tbody,td,tfoot,th,thead,tr{border-color:inherit;border-style:solid;border-width:0}label{display:inline-block}button{border-radius:0}button:focus:not(:focus-visible){outline:0}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,select{text-transform:none}[role=button]{cursor:pointer}select{word-wrap:normal}select:disabled{opacity:1}[list]::-webkit-calendar-picker-indicator{display:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]:not(:disabled),[type=reset]:not(:disabled),[type=submit]:not(:disabled),button:not(:disabled){cursor:pointer}::-moz-focus-inner{padding:0;border-style:none}textarea{resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{float:left;width:100%;padding:0;margin-bottom:.5rem;font-size:calc(1.275rem + .3vw);line-height:inherit}@media (min-width:1200px){legend{font-size:1.5rem}}legend+*{clear:left}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-fields-wrapper,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-text,::-webkit-datetime-edit-year-field{padding:0}::-webkit-inner-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:textfield}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-color-swatch-wrapper{padding:0}::file-selector-button{font:inherit}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}iframe{border:0}summary{display:list-item;cursor:pointer}progress{vertical-align:baseline}[hidden]{display:none!important}</style> @@ -28,8 +28,8 @@ - <h2>API Documentation</h2> - <ul class="memberlist"> + <h2>API Documentation</h2> + <ul class="memberlist"> <li> <a class="function" href="#isolate_table_selects">isolate_table_selects</a> </li> diff --git a/docs/sqlglot/optimizer/lower_identities.html b/docs/sqlglot/optimizer/lower_identities.html index 866415a..43f7e5a 100644 --- a/docs/sqlglot/optimizer/lower_identities.html +++ b/docs/sqlglot/optimizer/lower_identities.html @@ -3,7 +3,7 @@ <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> - <meta name="generator" content="pdoc 13.0.0"/> + <meta name="generator" content="pdoc 13.0.1"/> <title>sqlglot.optimizer.lower_identities API documentation</title> <style>/*! * Bootstrap Reboot v5.0.0 (https://getbootstrap.com/) * Copyright 2011-2021 The Bootstrap Authors * Copyright 2011-2021 Twitter, Inc. * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE) * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md) */*,::after,::before{box-sizing:border-box}@media 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1rem}img,svg{vertical-align:middle}table{caption-side:bottom;border-collapse:collapse}caption{padding-top:.5rem;padding-bottom:.5rem;color:#6c757d;text-align:left}th{text-align:inherit;text-align:-webkit-match-parent}tbody,td,tfoot,th,thead,tr{border-color:inherit;border-style:solid;border-width:0}label{display:inline-block}button{border-radius:0}button:focus:not(:focus-visible){outline:0}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,select{text-transform:none}[role=button]{cursor:pointer}select{word-wrap:normal}select:disabled{opacity:1}[list]::-webkit-calendar-picker-indicator{display:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]:not(:disabled),[type=reset]:not(:disabled),[type=submit]:not(:disabled),button:not(:disabled){cursor:pointer}::-moz-focus-inner{padding:0;border-style:none}textarea{resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{float:left;width:100%;padding:0;margin-bottom:.5rem;font-size:calc(1.275rem + .3vw);line-height:inherit}@media (min-width:1200px){legend{font-size:1.5rem}}legend+*{clear:left}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-fields-wrapper,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-text,::-webkit-datetime-edit-year-field{padding:0}::-webkit-inner-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:textfield}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-color-swatch-wrapper{padding:0}::file-selector-button{font:inherit}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}iframe{border:0}summary{display:list-item;cursor:pointer}progress{vertical-align:baseline}[hidden]{display:none!important}</style> @@ -28,8 +28,8 @@ - <h2>API Documentation</h2> - <ul class="memberlist"> + <h2>API Documentation</h2> + <ul class="memberlist"> <li> <a class="function" href="#lower_identities">lower_identities</a> </li> @@ -57,97 +57,93 @@ <label class="view-source-button" for="mod-lower_identities-view-source"><span>View Source</span></label> <div class="pdoc-code codehilite"><pre><span></span><span id="L-1"><a href="#L-1"><span class="linenos"> 1</span></a><span class="kn">from</span> <span class="nn">sqlglot</span> <span class="kn">import</span> <span class="n">exp</span> -</span><span id="L-2"><a href="#L-2"><span class="linenos"> 2</span></a><span class="kn">from</span> <span class="nn">sqlglot.helper</span> <span class="kn">import</span> <span class="n">ensure_collection</span> +</span><span id="L-2"><a href="#L-2"><span class="linenos"> 2</span></a> </span><span id="L-3"><a href="#L-3"><span class="linenos"> 3</span></a> -</span><span id="L-4"><a href="#L-4"><span class="linenos"> 4</span></a> -</span><span id="L-5"><a href="#L-5"><span class="linenos"> 5</span></a><span class="k">def</span> <span class="nf">lower_identities</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-6"><a href="#L-6"><span class="linenos"> 6</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-7"><a href="#L-7"><span class="linenos"> 7</span></a><span class="sd"> Convert all unquoted identifiers to lower case.</span> -</span><span id="L-8"><a href="#L-8"><span class="linenos"> 8</span></a> -</span><span id="L-9"><a href="#L-9"><span class="linenos"> 9</span></a><span class="sd"> Assuming the schema is all lower case, this essentially makes identifiers case-insensitive.</span> -</span><span id="L-10"><a href="#L-10"><span class="linenos">10</span></a> -</span><span id="L-11"><a href="#L-11"><span class="linenos">11</span></a><span class="sd"> Example:</span> -</span><span id="L-12"><a href="#L-12"><span class="linenos">12</span></a><span class="sd"> >>> import sqlglot</span> -</span><span id="L-13"><a href="#L-13"><span class="linenos">13</span></a><span class="sd"> >>> expression = sqlglot.parse_one('SELECT Bar.A AS A FROM "Foo".Bar')</span> -</span><span id="L-14"><a href="#L-14"><span class="linenos">14</span></a><span class="sd"> >>> lower_identities(expression).sql()</span> -</span><span id="L-15"><a href="#L-15"><span class="linenos">15</span></a><span class="sd"> 'SELECT bar.a AS A FROM "Foo".bar'</span> -</span><span id="L-16"><a href="#L-16"><span class="linenos">16</span></a> -</span><span id="L-17"><a href="#L-17"><span class="linenos">17</span></a><span class="sd"> Args:</span> -</span><span id="L-18"><a href="#L-18"><span class="linenos">18</span></a><span class="sd"> expression (sqlglot.Expression): expression to quote</span> -</span><span id="L-19"><a href="#L-19"><span class="linenos">19</span></a><span class="sd"> Returns:</span> -</span><span id="L-20"><a href="#L-20"><span class="linenos">20</span></a><span class="sd"> sqlglot.Expression: quoted expression</span> -</span><span id="L-21"><a href="#L-21"><span class="linenos">21</span></a><span class="sd"> """</span> -</span><span id="L-22"><a href="#L-22"><span class="linenos">22</span></a> <span class="c1"># We need to leave the output aliases unchanged, so the selects need special handling</span> -</span><span id="L-23"><a href="#L-23"><span class="linenos">23</span></a> <span class="n">_lower_selects</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-24"><a href="#L-24"><span class="linenos">24</span></a> -</span><span id="L-25"><a href="#L-25"><span class="linenos">25</span></a> <span class="c1"># These clauses can reference output aliases and also need special handling</span> -</span><span id="L-26"><a href="#L-26"><span class="linenos">26</span></a> <span class="n">_lower_order</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-27"><a href="#L-27"><span class="linenos">27</span></a> <span class="n">_lower_having</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-28"><a href="#L-28"><span class="linenos">28</span></a> -</span><span id="L-29"><a href="#L-29"><span class="linenos">29</span></a> <span class="c1"># We've already handled these args, so don't traverse into them</span> -</span><span id="L-30"><a href="#L-30"><span class="linenos">30</span></a> <span class="n">traversed</span> <span class="o">=</span> <span class="p">{</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="s2">"order"</span><span class="p">,</span> <span class="s2">"having"</span><span class="p">}</span> -</span><span id="L-31"><a href="#L-31"><span class="linenos">31</span></a> -</span><span id="L-32"><a href="#L-32"><span class="linenos">32</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">):</span> -</span><span id="L-33"><a href="#L-33"><span class="linenos">33</span></a> <span class="c1"># Root subquery, e.g. (SELECT A AS A FROM X) LIMIT 1</span> -</span><span id="L-34"><a href="#L-34"><span class="linenos">34</span></a> <span class="n">lower_identities</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> -</span><span id="L-35"><a href="#L-35"><span class="linenos">35</span></a> <span class="n">traversed</span> <span class="o">|=</span> <span class="p">{</span><span class="s2">"this"</span><span class="p">}</span> -</span><span id="L-36"><a href="#L-36"><span class="linenos">36</span></a> -</span><span id="L-37"><a href="#L-37"><span class="linenos">37</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Union</span><span class="p">):</span> -</span><span id="L-38"><a href="#L-38"><span class="linenos">38</span></a> <span class="c1"># Union, e.g. SELECT A AS A FROM X UNION SELECT A AS A FROM X</span> -</span><span id="L-39"><a href="#L-39"><span class="linenos">39</span></a> <span class="n">lower_identities</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">left</span><span class="p">)</span> -</span><span id="L-40"><a href="#L-40"><span class="linenos">40</span></a> <span class="n">lower_identities</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">right</span><span class="p">)</span> -</span><span id="L-41"><a href="#L-41"><span class="linenos">41</span></a> <span class="n">traversed</span> <span class="o">|=</span> <span class="p">{</span><span class="s2">"this"</span><span class="p">,</span> <span class="s2">"expression"</span><span class="p">}</span> -</span><span id="L-42"><a href="#L-42"><span class="linenos">42</span></a> -</span><span id="L-43"><a href="#L-43"><span class="linenos">43</span></a> <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">items</span><span class="p">():</span> -</span><span id="L-44"><a href="#L-44"><span class="linenos">44</span></a> <span class="k">if</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">traversed</span><span class="p">:</span> -</span><span id="L-45"><a href="#L-45"><span class="linenos">45</span></a> <span class="k">continue</span> +</span><span id="L-4"><a href="#L-4"><span class="linenos"> 4</span></a><span class="k">def</span> <span class="nf">lower_identities</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-5"><a href="#L-5"><span class="linenos"> 5</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-6"><a href="#L-6"><span class="linenos"> 6</span></a><span class="sd"> Convert all unquoted identifiers to lower case.</span> +</span><span id="L-7"><a href="#L-7"><span class="linenos"> 7</span></a> +</span><span id="L-8"><a href="#L-8"><span class="linenos"> 8</span></a><span class="sd"> Assuming the schema is all lower case, this essentially makes identifiers case-insensitive.</span> +</span><span id="L-9"><a href="#L-9"><span class="linenos"> 9</span></a> +</span><span id="L-10"><a href="#L-10"><span class="linenos">10</span></a><span class="sd"> Example:</span> +</span><span id="L-11"><a href="#L-11"><span class="linenos">11</span></a><span class="sd"> >>> import sqlglot</span> +</span><span id="L-12"><a href="#L-12"><span class="linenos">12</span></a><span class="sd"> >>> expression = sqlglot.parse_one('SELECT Bar.A AS A FROM "Foo".Bar')</span> +</span><span id="L-13"><a href="#L-13"><span class="linenos">13</span></a><span class="sd"> >>> lower_identities(expression).sql()</span> +</span><span id="L-14"><a href="#L-14"><span class="linenos">14</span></a><span class="sd"> 'SELECT bar.a AS A FROM "Foo".bar'</span> +</span><span id="L-15"><a href="#L-15"><span class="linenos">15</span></a> +</span><span id="L-16"><a href="#L-16"><span class="linenos">16</span></a><span class="sd"> Args:</span> +</span><span id="L-17"><a href="#L-17"><span class="linenos">17</span></a><span class="sd"> expression (sqlglot.Expression): expression to quote</span> +</span><span id="L-18"><a href="#L-18"><span class="linenos">18</span></a><span class="sd"> Returns:</span> +</span><span id="L-19"><a href="#L-19"><span class="linenos">19</span></a><span class="sd"> sqlglot.Expression: quoted expression</span> +</span><span id="L-20"><a href="#L-20"><span class="linenos">20</span></a><span class="sd"> """</span> +</span><span id="L-21"><a href="#L-21"><span class="linenos">21</span></a> <span class="c1"># We need to leave the output aliases unchanged, so the selects need special handling</span> +</span><span id="L-22"><a href="#L-22"><span class="linenos">22</span></a> <span class="n">_lower_selects</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="L-23"><a href="#L-23"><span class="linenos">23</span></a> +</span><span id="L-24"><a href="#L-24"><span class="linenos">24</span></a> <span class="c1"># These clauses can reference output aliases and also need special handling</span> +</span><span id="L-25"><a href="#L-25"><span class="linenos">25</span></a> <span class="n">_lower_order</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="L-26"><a href="#L-26"><span class="linenos">26</span></a> <span class="n">_lower_having</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="L-27"><a href="#L-27"><span class="linenos">27</span></a> +</span><span id="L-28"><a href="#L-28"><span class="linenos">28</span></a> <span class="c1"># We've already handled these args, so don't traverse into them</span> +</span><span id="L-29"><a href="#L-29"><span class="linenos">29</span></a> <span class="n">traversed</span> <span class="o">=</span> <span class="p">{</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="s2">"order"</span><span class="p">,</span> <span class="s2">"having"</span><span class="p">}</span> +</span><span id="L-30"><a href="#L-30"><span class="linenos">30</span></a> +</span><span id="L-31"><a href="#L-31"><span class="linenos">31</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">):</span> +</span><span id="L-32"><a href="#L-32"><span class="linenos">32</span></a> <span class="c1"># Root subquery, e.g. (SELECT A AS A FROM X) LIMIT 1</span> +</span><span id="L-33"><a href="#L-33"><span class="linenos">33</span></a> <span class="n">lower_identities</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> +</span><span id="L-34"><a href="#L-34"><span class="linenos">34</span></a> <span class="n">traversed</span> <span class="o">|=</span> <span class="p">{</span><span class="s2">"this"</span><span class="p">}</span> +</span><span id="L-35"><a href="#L-35"><span class="linenos">35</span></a> +</span><span id="L-36"><a href="#L-36"><span class="linenos">36</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Union</span><span class="p">):</span> +</span><span id="L-37"><a href="#L-37"><span class="linenos">37</span></a> <span class="c1"># Union, e.g. SELECT A AS A FROM X UNION SELECT A AS A FROM X</span> +</span><span id="L-38"><a href="#L-38"><span class="linenos">38</span></a> <span class="n">lower_identities</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">left</span><span class="p">)</span> +</span><span id="L-39"><a href="#L-39"><span class="linenos">39</span></a> <span class="n">lower_identities</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">right</span><span class="p">)</span> +</span><span id="L-40"><a href="#L-40"><span class="linenos">40</span></a> <span class="n">traversed</span> <span class="o">|=</span> <span class="p">{</span><span class="s2">"this"</span><span class="p">,</span> <span class="s2">"expression"</span><span class="p">}</span> +</span><span id="L-41"><a href="#L-41"><span class="linenos">41</span></a> +</span><span id="L-42"><a href="#L-42"><span class="linenos">42</span></a> <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">iter_expressions</span><span class="p">():</span> +</span><span id="L-43"><a href="#L-43"><span class="linenos">43</span></a> <span class="k">if</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">traversed</span><span class="p">:</span> +</span><span id="L-44"><a href="#L-44"><span class="linenos">44</span></a> <span class="k">continue</span> +</span><span id="L-45"><a href="#L-45"><span class="linenos">45</span></a> <span class="n">v</span><span class="o">.</span><span class="n">transform</span><span class="p">(</span><span class="n">_lower</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> </span><span id="L-46"><a href="#L-46"><span class="linenos">46</span></a> -</span><span id="L-47"><a href="#L-47"><span class="linenos">47</span></a> <span class="k">for</span> <span class="n">child</span> <span class="ow">in</span> <span class="n">ensure_collection</span><span class="p">(</span><span class="n">v</span><span class="p">):</span> -</span><span id="L-48"><a href="#L-48"><span class="linenos">48</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">child</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">):</span> -</span><span id="L-49"><a href="#L-49"><span class="linenos">49</span></a> <span class="n">child</span><span class="o">.</span><span class="n">transform</span><span class="p">(</span><span class="n">_lower</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> -</span><span id="L-50"><a href="#L-50"><span class="linenos">50</span></a> -</span><span id="L-51"><a href="#L-51"><span class="linenos">51</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-52"><a href="#L-52"><span class="linenos">52</span></a> -</span><span id="L-53"><a href="#L-53"><span class="linenos">53</span></a> -</span><span id="L-54"><a href="#L-54"><span class="linenos">54</span></a><span class="k">def</span> <span class="nf">_lower_selects</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-55"><a href="#L-55"><span class="linenos">55</span></a> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">expressions</span><span class="p">:</span> -</span><span id="L-56"><a href="#L-56"><span class="linenos">56</span></a> <span class="c1"># Leave output aliases as-is</span> -</span><span id="L-57"><a href="#L-57"><span class="linenos">57</span></a> <span class="n">e</span><span class="o">.</span><span class="n">unalias</span><span class="p">()</span><span class="o">.</span><span class="n">transform</span><span class="p">(</span><span class="n">_lower</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> +</span><span id="L-47"><a href="#L-47"><span class="linenos">47</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-48"><a href="#L-48"><span class="linenos">48</span></a> +</span><span id="L-49"><a href="#L-49"><span class="linenos">49</span></a> +</span><span id="L-50"><a href="#L-50"><span class="linenos">50</span></a><span class="k">def</span> <span class="nf">_lower_selects</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-51"><a href="#L-51"><span class="linenos">51</span></a> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">expressions</span><span class="p">:</span> +</span><span id="L-52"><a href="#L-52"><span class="linenos">52</span></a> <span class="c1"># Leave output aliases as-is</span> +</span><span id="L-53"><a href="#L-53"><span class="linenos">53</span></a> <span class="n">e</span><span class="o">.</span><span class="n">unalias</span><span class="p">()</span><span class="o">.</span><span class="n">transform</span><span class="p">(</span><span class="n">_lower</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> +</span><span id="L-54"><a href="#L-54"><span class="linenos">54</span></a> +</span><span id="L-55"><a href="#L-55"><span class="linenos">55</span></a> +</span><span id="L-56"><a href="#L-56"><span class="linenos">56</span></a><span class="k">def</span> <span class="nf">_lower_order</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-57"><a href="#L-57"><span class="linenos">57</span></a> <span class="n">order</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"order"</span><span class="p">)</span> </span><span id="L-58"><a href="#L-58"><span class="linenos">58</span></a> -</span><span id="L-59"><a href="#L-59"><span class="linenos">59</span></a> -</span><span id="L-60"><a href="#L-60"><span class="linenos">60</span></a><span class="k">def</span> <span class="nf">_lower_order</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-61"><a href="#L-61"><span class="linenos">61</span></a> <span class="n">order</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"order"</span><span class="p">)</span> -</span><span id="L-62"><a href="#L-62"><span class="linenos">62</span></a> -</span><span id="L-63"><a href="#L-63"><span class="linenos">63</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">order</span><span class="p">:</span> -</span><span id="L-64"><a href="#L-64"><span class="linenos">64</span></a> <span class="k">return</span> -</span><span id="L-65"><a href="#L-65"><span class="linenos">65</span></a> -</span><span id="L-66"><a href="#L-66"><span class="linenos">66</span></a> <span class="n">output_aliases</span> <span class="o">=</span> <span class="p">{</span><span class="n">e</span><span class="o">.</span><span class="n">alias</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">expressions</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Alias</span><span class="p">)}</span> -</span><span id="L-67"><a href="#L-67"><span class="linenos">67</span></a> -</span><span id="L-68"><a href="#L-68"><span class="linenos">68</span></a> <span class="k">for</span> <span class="n">ordered</span> <span class="ow">in</span> <span class="n">order</span><span class="o">.</span><span class="n">expressions</span><span class="p">:</span> -</span><span id="L-69"><a href="#L-69"><span class="linenos">69</span></a> <span class="c1"># Don't lower references to output aliases</span> -</span><span id="L-70"><a href="#L-70"><span class="linenos">70</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="p">(</span> -</span><span id="L-71"><a href="#L-71"><span class="linenos">71</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">ordered</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">)</span> -</span><span id="L-72"><a href="#L-72"><span class="linenos">72</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="n">ordered</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">table</span> -</span><span id="L-73"><a href="#L-73"><span class="linenos">73</span></a> <span class="ow">and</span> <span class="n">ordered</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">output_aliases</span> -</span><span id="L-74"><a href="#L-74"><span class="linenos">74</span></a> <span class="p">):</span> -</span><span id="L-75"><a href="#L-75"><span class="linenos">75</span></a> <span class="n">ordered</span><span class="o">.</span><span class="n">transform</span><span class="p">(</span><span class="n">_lower</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> +</span><span id="L-59"><a href="#L-59"><span class="linenos">59</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">order</span><span class="p">:</span> +</span><span id="L-60"><a href="#L-60"><span class="linenos">60</span></a> <span class="k">return</span> +</span><span id="L-61"><a href="#L-61"><span class="linenos">61</span></a> +</span><span id="L-62"><a href="#L-62"><span class="linenos">62</span></a> <span class="n">output_aliases</span> <span class="o">=</span> <span class="p">{</span><span class="n">e</span><span class="o">.</span><span class="n">alias</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">expressions</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Alias</span><span class="p">)}</span> +</span><span id="L-63"><a href="#L-63"><span class="linenos">63</span></a> +</span><span id="L-64"><a href="#L-64"><span class="linenos">64</span></a> <span class="k">for</span> <span class="n">ordered</span> <span class="ow">in</span> <span class="n">order</span><span class="o">.</span><span class="n">expressions</span><span class="p">:</span> +</span><span id="L-65"><a href="#L-65"><span class="linenos">65</span></a> <span class="c1"># Don't lower references to output aliases</span> +</span><span id="L-66"><a href="#L-66"><span class="linenos">66</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="p">(</span> +</span><span id="L-67"><a href="#L-67"><span class="linenos">67</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">ordered</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">)</span> +</span><span id="L-68"><a href="#L-68"><span class="linenos">68</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="n">ordered</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">table</span> +</span><span id="L-69"><a href="#L-69"><span class="linenos">69</span></a> <span class="ow">and</span> <span class="n">ordered</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">output_aliases</span> +</span><span id="L-70"><a href="#L-70"><span class="linenos">70</span></a> <span class="p">):</span> +</span><span id="L-71"><a href="#L-71"><span class="linenos">71</span></a> <span class="n">ordered</span><span class="o">.</span><span class="n">transform</span><span class="p">(</span><span class="n">_lower</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> +</span><span id="L-72"><a href="#L-72"><span class="linenos">72</span></a> +</span><span id="L-73"><a href="#L-73"><span class="linenos">73</span></a> +</span><span id="L-74"><a href="#L-74"><span class="linenos">74</span></a><span class="k">def</span> <span class="nf">_lower_having</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-75"><a href="#L-75"><span class="linenos">75</span></a> <span class="n">having</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"having"</span><span class="p">)</span> </span><span id="L-76"><a href="#L-76"><span class="linenos">76</span></a> -</span><span id="L-77"><a href="#L-77"><span class="linenos">77</span></a> -</span><span id="L-78"><a href="#L-78"><span class="linenos">78</span></a><span class="k">def</span> <span class="nf">_lower_having</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-79"><a href="#L-79"><span class="linenos">79</span></a> <span class="n">having</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"having"</span><span class="p">)</span> -</span><span id="L-80"><a href="#L-80"><span class="linenos">80</span></a> -</span><span id="L-81"><a href="#L-81"><span class="linenos">81</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">having</span><span class="p">:</span> -</span><span id="L-82"><a href="#L-82"><span class="linenos">82</span></a> <span class="k">return</span> +</span><span id="L-77"><a href="#L-77"><span class="linenos">77</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">having</span><span class="p">:</span> +</span><span id="L-78"><a href="#L-78"><span class="linenos">78</span></a> <span class="k">return</span> +</span><span id="L-79"><a href="#L-79"><span class="linenos">79</span></a> +</span><span id="L-80"><a href="#L-80"><span class="linenos">80</span></a> <span class="c1"># Don't lower references to output aliases</span> +</span><span id="L-81"><a href="#L-81"><span class="linenos">81</span></a> <span class="k">for</span> <span class="n">agg</span> <span class="ow">in</span> <span class="n">having</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">AggFunc</span><span class="p">):</span> +</span><span id="L-82"><a href="#L-82"><span class="linenos">82</span></a> <span class="n">agg</span><span class="o">.</span><span class="n">transform</span><span class="p">(</span><span class="n">_lower</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> </span><span id="L-83"><a href="#L-83"><span class="linenos">83</span></a> -</span><span id="L-84"><a href="#L-84"><span class="linenos">84</span></a> <span class="c1"># Don't lower references to output aliases</span> -</span><span id="L-85"><a href="#L-85"><span class="linenos">85</span></a> <span class="k">for</span> <span class="n">agg</span> <span class="ow">in</span> <span class="n">having</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">AggFunc</span><span class="p">):</span> -</span><span id="L-86"><a href="#L-86"><span class="linenos">86</span></a> <span class="n">agg</span><span class="o">.</span><span class="n">transform</span><span class="p">(</span><span class="n">_lower</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> -</span><span id="L-87"><a href="#L-87"><span class="linenos">87</span></a> -</span><span id="L-88"><a href="#L-88"><span class="linenos">88</span></a> -</span><span id="L-89"><a href="#L-89"><span class="linenos">89</span></a><span class="k">def</span> <span class="nf">_lower</span><span class="p">(</span><span class="n">node</span><span class="p">):</span> -</span><span id="L-90"><a href="#L-90"><span class="linenos">90</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">node</span><span class="o">.</span><span class="n">quoted</span><span class="p">:</span> -</span><span id="L-91"><a href="#L-91"><span class="linenos">91</span></a> <span class="n">node</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"this"</span><span class="p">,</span> <span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">lower</span><span class="p">())</span> -</span><span id="L-92"><a href="#L-92"><span class="linenos">92</span></a> <span class="k">return</span> <span class="n">node</span> +</span><span id="L-84"><a href="#L-84"><span class="linenos">84</span></a> +</span><span id="L-85"><a href="#L-85"><span class="linenos">85</span></a><span class="k">def</span> <span class="nf">_lower</span><span class="p">(</span><span class="n">node</span><span class="p">):</span> +</span><span id="L-86"><a href="#L-86"><span class="linenos">86</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">node</span><span class="o">.</span><span class="n">quoted</span><span class="p">:</span> +</span><span id="L-87"><a href="#L-87"><span class="linenos">87</span></a> <span class="n">node</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"this"</span><span class="p">,</span> <span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">lower</span><span class="p">())</span> +</span><span id="L-88"><a href="#L-88"><span class="linenos">88</span></a> <span class="k">return</span> <span class="n">node</span> </span></pre></div> @@ -163,53 +159,50 @@ </div> <a class="headerlink" href="#lower_identities"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="lower_identities-6"><a href="#lower_identities-6"><span class="linenos"> 6</span></a><span class="k">def</span> <span class="nf">lower_identities</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="lower_identities-7"><a href="#lower_identities-7"><span class="linenos"> 7</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="lower_identities-8"><a href="#lower_identities-8"><span class="linenos"> 8</span></a><span class="sd"> Convert all unquoted identifiers to lower case.</span> -</span><span id="lower_identities-9"><a href="#lower_identities-9"><span class="linenos"> 9</span></a> -</span><span id="lower_identities-10"><a href="#lower_identities-10"><span class="linenos">10</span></a><span class="sd"> Assuming the schema is all lower case, this essentially makes identifiers case-insensitive.</span> -</span><span id="lower_identities-11"><a href="#lower_identities-11"><span class="linenos">11</span></a> -</span><span id="lower_identities-12"><a href="#lower_identities-12"><span class="linenos">12</span></a><span class="sd"> Example:</span> -</span><span id="lower_identities-13"><a href="#lower_identities-13"><span class="linenos">13</span></a><span class="sd"> >>> import sqlglot</span> -</span><span id="lower_identities-14"><a href="#lower_identities-14"><span class="linenos">14</span></a><span class="sd"> >>> expression = sqlglot.parse_one('SELECT Bar.A AS A FROM "Foo".Bar')</span> -</span><span id="lower_identities-15"><a href="#lower_identities-15"><span class="linenos">15</span></a><span class="sd"> >>> lower_identities(expression).sql()</span> -</span><span id="lower_identities-16"><a href="#lower_identities-16"><span class="linenos">16</span></a><span class="sd"> 'SELECT bar.a AS A FROM "Foo".bar'</span> -</span><span id="lower_identities-17"><a href="#lower_identities-17"><span class="linenos">17</span></a> -</span><span id="lower_identities-18"><a href="#lower_identities-18"><span class="linenos">18</span></a><span class="sd"> Args:</span> -</span><span id="lower_identities-19"><a href="#lower_identities-19"><span class="linenos">19</span></a><span class="sd"> expression (sqlglot.Expression): expression to quote</span> -</span><span id="lower_identities-20"><a href="#lower_identities-20"><span class="linenos">20</span></a><span class="sd"> Returns:</span> -</span><span id="lower_identities-21"><a href="#lower_identities-21"><span class="linenos">21</span></a><span class="sd"> sqlglot.Expression: quoted expression</span> -</span><span id="lower_identities-22"><a href="#lower_identities-22"><span class="linenos">22</span></a><span class="sd"> """</span> -</span><span id="lower_identities-23"><a href="#lower_identities-23"><span class="linenos">23</span></a> <span class="c1"># We need to leave the output aliases unchanged, so the selects need special handling</span> -</span><span id="lower_identities-24"><a href="#lower_identities-24"><span class="linenos">24</span></a> <span class="n">_lower_selects</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="lower_identities-25"><a href="#lower_identities-25"><span class="linenos">25</span></a> -</span><span id="lower_identities-26"><a href="#lower_identities-26"><span class="linenos">26</span></a> <span class="c1"># These clauses can reference output aliases and also need special handling</span> -</span><span id="lower_identities-27"><a href="#lower_identities-27"><span class="linenos">27</span></a> <span class="n">_lower_order</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="lower_identities-28"><a href="#lower_identities-28"><span class="linenos">28</span></a> <span class="n">_lower_having</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="lower_identities-29"><a href="#lower_identities-29"><span class="linenos">29</span></a> -</span><span id="lower_identities-30"><a href="#lower_identities-30"><span class="linenos">30</span></a> <span class="c1"># We've already handled these args, so don't traverse into them</span> -</span><span id="lower_identities-31"><a href="#lower_identities-31"><span class="linenos">31</span></a> <span class="n">traversed</span> <span class="o">=</span> <span class="p">{</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="s2">"order"</span><span class="p">,</span> <span class="s2">"having"</span><span class="p">}</span> -</span><span id="lower_identities-32"><a href="#lower_identities-32"><span class="linenos">32</span></a> -</span><span id="lower_identities-33"><a href="#lower_identities-33"><span class="linenos">33</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">):</span> -</span><span id="lower_identities-34"><a href="#lower_identities-34"><span class="linenos">34</span></a> <span class="c1"># Root subquery, e.g. (SELECT A AS A FROM X) LIMIT 1</span> -</span><span id="lower_identities-35"><a href="#lower_identities-35"><span class="linenos">35</span></a> <span class="n">lower_identities</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> -</span><span id="lower_identities-36"><a href="#lower_identities-36"><span class="linenos">36</span></a> <span class="n">traversed</span> <span class="o">|=</span> <span class="p">{</span><span class="s2">"this"</span><span class="p">}</span> -</span><span id="lower_identities-37"><a href="#lower_identities-37"><span class="linenos">37</span></a> -</span><span id="lower_identities-38"><a href="#lower_identities-38"><span class="linenos">38</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Union</span><span class="p">):</span> -</span><span id="lower_identities-39"><a href="#lower_identities-39"><span class="linenos">39</span></a> <span class="c1"># Union, e.g. SELECT A AS A FROM X UNION SELECT A AS A FROM X</span> -</span><span id="lower_identities-40"><a href="#lower_identities-40"><span class="linenos">40</span></a> <span class="n">lower_identities</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">left</span><span class="p">)</span> -</span><span id="lower_identities-41"><a href="#lower_identities-41"><span class="linenos">41</span></a> <span class="n">lower_identities</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">right</span><span class="p">)</span> -</span><span id="lower_identities-42"><a href="#lower_identities-42"><span class="linenos">42</span></a> <span class="n">traversed</span> <span class="o">|=</span> <span class="p">{</span><span class="s2">"this"</span><span class="p">,</span> <span class="s2">"expression"</span><span class="p">}</span> -</span><span id="lower_identities-43"><a href="#lower_identities-43"><span class="linenos">43</span></a> -</span><span id="lower_identities-44"><a href="#lower_identities-44"><span class="linenos">44</span></a> <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">items</span><span class="p">():</span> -</span><span id="lower_identities-45"><a href="#lower_identities-45"><span class="linenos">45</span></a> <span class="k">if</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">traversed</span><span class="p">:</span> -</span><span id="lower_identities-46"><a href="#lower_identities-46"><span class="linenos">46</span></a> <span class="k">continue</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="lower_identities-5"><a href="#lower_identities-5"><span class="linenos"> 5</span></a><span class="k">def</span> <span class="nf">lower_identities</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="lower_identities-6"><a href="#lower_identities-6"><span class="linenos"> 6</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="lower_identities-7"><a href="#lower_identities-7"><span class="linenos"> 7</span></a><span class="sd"> Convert all unquoted identifiers to lower case.</span> +</span><span id="lower_identities-8"><a href="#lower_identities-8"><span class="linenos"> 8</span></a> +</span><span id="lower_identities-9"><a href="#lower_identities-9"><span class="linenos"> 9</span></a><span class="sd"> Assuming the schema is all lower case, this essentially makes identifiers case-insensitive.</span> +</span><span id="lower_identities-10"><a href="#lower_identities-10"><span class="linenos">10</span></a> +</span><span id="lower_identities-11"><a href="#lower_identities-11"><span class="linenos">11</span></a><span class="sd"> Example:</span> +</span><span id="lower_identities-12"><a href="#lower_identities-12"><span class="linenos">12</span></a><span class="sd"> >>> import sqlglot</span> +</span><span id="lower_identities-13"><a href="#lower_identities-13"><span class="linenos">13</span></a><span class="sd"> >>> expression = sqlglot.parse_one('SELECT Bar.A AS A FROM "Foo".Bar')</span> +</span><span id="lower_identities-14"><a href="#lower_identities-14"><span class="linenos">14</span></a><span class="sd"> >>> lower_identities(expression).sql()</span> +</span><span id="lower_identities-15"><a href="#lower_identities-15"><span class="linenos">15</span></a><span class="sd"> 'SELECT bar.a AS A FROM "Foo".bar'</span> +</span><span id="lower_identities-16"><a href="#lower_identities-16"><span class="linenos">16</span></a> +</span><span id="lower_identities-17"><a href="#lower_identities-17"><span class="linenos">17</span></a><span class="sd"> Args:</span> +</span><span id="lower_identities-18"><a href="#lower_identities-18"><span class="linenos">18</span></a><span class="sd"> expression (sqlglot.Expression): expression to quote</span> +</span><span id="lower_identities-19"><a href="#lower_identities-19"><span class="linenos">19</span></a><span class="sd"> Returns:</span> +</span><span id="lower_identities-20"><a href="#lower_identities-20"><span class="linenos">20</span></a><span class="sd"> sqlglot.Expression: quoted expression</span> +</span><span id="lower_identities-21"><a href="#lower_identities-21"><span class="linenos">21</span></a><span class="sd"> """</span> +</span><span id="lower_identities-22"><a href="#lower_identities-22"><span class="linenos">22</span></a> <span class="c1"># We need to leave the output aliases unchanged, so the selects need special handling</span> +</span><span id="lower_identities-23"><a href="#lower_identities-23"><span class="linenos">23</span></a> <span class="n">_lower_selects</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="lower_identities-24"><a href="#lower_identities-24"><span class="linenos">24</span></a> +</span><span id="lower_identities-25"><a href="#lower_identities-25"><span class="linenos">25</span></a> <span class="c1"># These clauses can reference output aliases and also need special handling</span> +</span><span id="lower_identities-26"><a href="#lower_identities-26"><span class="linenos">26</span></a> <span class="n">_lower_order</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="lower_identities-27"><a href="#lower_identities-27"><span class="linenos">27</span></a> <span class="n">_lower_having</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="lower_identities-28"><a href="#lower_identities-28"><span class="linenos">28</span></a> +</span><span id="lower_identities-29"><a href="#lower_identities-29"><span class="linenos">29</span></a> <span class="c1"># We've already handled these args, so don't traverse into them</span> +</span><span id="lower_identities-30"><a href="#lower_identities-30"><span class="linenos">30</span></a> <span class="n">traversed</span> <span class="o">=</span> <span class="p">{</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="s2">"order"</span><span class="p">,</span> <span class="s2">"having"</span><span class="p">}</span> +</span><span id="lower_identities-31"><a href="#lower_identities-31"><span class="linenos">31</span></a> +</span><span id="lower_identities-32"><a href="#lower_identities-32"><span class="linenos">32</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">):</span> +</span><span id="lower_identities-33"><a href="#lower_identities-33"><span class="linenos">33</span></a> <span class="c1"># Root subquery, e.g. (SELECT A AS A FROM X) LIMIT 1</span> +</span><span id="lower_identities-34"><a href="#lower_identities-34"><span class="linenos">34</span></a> <span class="n">lower_identities</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> +</span><span id="lower_identities-35"><a href="#lower_identities-35"><span class="linenos">35</span></a> <span class="n">traversed</span> <span class="o">|=</span> <span class="p">{</span><span class="s2">"this"</span><span class="p">}</span> +</span><span id="lower_identities-36"><a href="#lower_identities-36"><span class="linenos">36</span></a> +</span><span id="lower_identities-37"><a href="#lower_identities-37"><span class="linenos">37</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Union</span><span class="p">):</span> +</span><span id="lower_identities-38"><a href="#lower_identities-38"><span class="linenos">38</span></a> <span class="c1"># Union, e.g. SELECT A AS A FROM X UNION SELECT A AS A FROM X</span> +</span><span id="lower_identities-39"><a href="#lower_identities-39"><span class="linenos">39</span></a> <span class="n">lower_identities</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">left</span><span class="p">)</span> +</span><span id="lower_identities-40"><a href="#lower_identities-40"><span class="linenos">40</span></a> <span class="n">lower_identities</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">right</span><span class="p">)</span> +</span><span id="lower_identities-41"><a href="#lower_identities-41"><span class="linenos">41</span></a> <span class="n">traversed</span> <span class="o">|=</span> <span class="p">{</span><span class="s2">"this"</span><span class="p">,</span> <span class="s2">"expression"</span><span class="p">}</span> +</span><span id="lower_identities-42"><a href="#lower_identities-42"><span class="linenos">42</span></a> +</span><span id="lower_identities-43"><a href="#lower_identities-43"><span class="linenos">43</span></a> <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">iter_expressions</span><span class="p">():</span> +</span><span id="lower_identities-44"><a href="#lower_identities-44"><span class="linenos">44</span></a> <span class="k">if</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">traversed</span><span class="p">:</span> +</span><span id="lower_identities-45"><a href="#lower_identities-45"><span class="linenos">45</span></a> <span class="k">continue</span> +</span><span id="lower_identities-46"><a href="#lower_identities-46"><span class="linenos">46</span></a> <span class="n">v</span><span class="o">.</span><span class="n">transform</span><span class="p">(</span><span class="n">_lower</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> </span><span id="lower_identities-47"><a href="#lower_identities-47"><span class="linenos">47</span></a> -</span><span id="lower_identities-48"><a href="#lower_identities-48"><span class="linenos">48</span></a> <span class="k">for</span> <span class="n">child</span> <span class="ow">in</span> <span class="n">ensure_collection</span><span class="p">(</span><span class="n">v</span><span class="p">):</span> -</span><span id="lower_identities-49"><a href="#lower_identities-49"><span class="linenos">49</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">child</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">):</span> -</span><span id="lower_identities-50"><a href="#lower_identities-50"><span class="linenos">50</span></a> <span class="n">child</span><span class="o">.</span><span class="n">transform</span><span class="p">(</span><span class="n">_lower</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> -</span><span id="lower_identities-51"><a href="#lower_identities-51"><span class="linenos">51</span></a> -</span><span id="lower_identities-52"><a href="#lower_identities-52"><span class="linenos">52</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="lower_identities-48"><a href="#lower_identities-48"><span class="linenos">48</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> diff --git a/docs/sqlglot/optimizer/merge_subqueries.html b/docs/sqlglot/optimizer/merge_subqueries.html index 1842f90..8081d87 100644 --- a/docs/sqlglot/optimizer/merge_subqueries.html +++ b/docs/sqlglot/optimizer/merge_subqueries.html 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+ .3vw);line-height:inherit}@media (min-width:1200px){legend{font-size:1.5rem}}legend+*{clear:left}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-fields-wrapper,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-text,::-webkit-datetime-edit-year-field{padding:0}::-webkit-inner-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:textfield}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-color-swatch-wrapper{padding:0}::file-selector-button{font:inherit}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}iframe{border:0}summary{display:list-item;cursor:pointer}progress{vertical-align:baseline}[hidden]{display:none!important}</style> @@ -28,8 +28,8 @@ - <h2>API Documentation</h2> - <ul class="memberlist"> + <h2>API Documentation</h2> + <ul class="memberlist"> <li> <a class="function" href="#merge_subqueries">merge_subqueries</a> </li> @@ -67,385 +67,384 @@ </span><span id="L-3"><a href="#L-3"><span class="linenos"> 3</span></a><span class="kn">from</span> <span class="nn">sqlglot</span> <span class="kn">import</span> <span class="n">expressions</span> <span class="k">as</span> <span class="n">exp</span> </span><span id="L-4"><a href="#L-4"><span class="linenos"> 4</span></a><span class="kn">from</span> <span class="nn">sqlglot.helper</span> <span class="kn">import</span> <span class="n">find_new_name</span> </span><span id="L-5"><a href="#L-5"><span class="linenos"> 5</span></a><span class="kn">from</span> <span class="nn">sqlglot.optimizer.scope</span> <span class="kn">import</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">traverse_scope</span> -</span><span id="L-6"><a href="#L-6"><span class="linenos"> 6</span></a><span class="kn">from</span> <span class="nn">sqlglot.optimizer.simplify</span> <span class="kn">import</span> <span class="n">simplify</span> +</span><span id="L-6"><a href="#L-6"><span class="linenos"> 6</span></a> </span><span id="L-7"><a href="#L-7"><span class="linenos"> 7</span></a> -</span><span id="L-8"><a href="#L-8"><span class="linenos"> 8</span></a> -</span><span id="L-9"><a href="#L-9"><span class="linenos"> 9</span></a><span class="k">def</span> <span class="nf">merge_subqueries</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> -</span><span id="L-10"><a href="#L-10"><span class="linenos"> 10</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-11"><a href="#L-11"><span class="linenos"> 11</span></a><span class="sd"> Rewrite sqlglot AST to merge derived tables into the outer query.</span> -</span><span id="L-12"><a href="#L-12"><span class="linenos"> 12</span></a> -</span><span id="L-13"><a href="#L-13"><span class="linenos"> 13</span></a><span class="sd"> This also merges CTEs if they are selected from only once.</span> -</span><span id="L-14"><a href="#L-14"><span class="linenos"> 14</span></a> -</span><span id="L-15"><a href="#L-15"><span class="linenos"> 15</span></a><span class="sd"> Example:</span> -</span><span id="L-16"><a href="#L-16"><span class="linenos"> 16</span></a><span class="sd"> >>> import sqlglot</span> -</span><span id="L-17"><a href="#L-17"><span class="linenos"> 17</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT a FROM (SELECT x.a FROM x) JOIN y")</span> -</span><span id="L-18"><a href="#L-18"><span class="linenos"> 18</span></a><span class="sd"> >>> merge_subqueries(expression).sql()</span> -</span><span id="L-19"><a href="#L-19"><span class="linenos"> 19</span></a><span class="sd"> 'SELECT x.a FROM x JOIN y'</span> -</span><span id="L-20"><a href="#L-20"><span class="linenos"> 20</span></a> -</span><span id="L-21"><a href="#L-21"><span class="linenos"> 21</span></a><span class="sd"> If `leave_tables_isolated` is True, this will not merge inner queries into outer</span> -</span><span id="L-22"><a href="#L-22"><span class="linenos"> 22</span></a><span class="sd"> queries if it would result in multiple table selects in a single query:</span> -</span><span id="L-23"><a href="#L-23"><span class="linenos"> 23</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT a FROM (SELECT x.a FROM x) JOIN y")</span> -</span><span id="L-24"><a href="#L-24"><span class="linenos"> 24</span></a><span class="sd"> >>> merge_subqueries(expression, leave_tables_isolated=True).sql()</span> -</span><span id="L-25"><a href="#L-25"><span class="linenos"> 25</span></a><span class="sd"> 'SELECT a FROM (SELECT x.a FROM x) JOIN y'</span> -</span><span id="L-26"><a href="#L-26"><span class="linenos"> 26</span></a> -</span><span id="L-27"><a href="#L-27"><span class="linenos"> 27</span></a><span class="sd"> Inspired by https://dev.mysql.com/doc/refman/8.0/en/derived-table-optimization.html</span> -</span><span id="L-28"><a href="#L-28"><span class="linenos"> 28</span></a> -</span><span id="L-29"><a href="#L-29"><span class="linenos"> 29</span></a><span class="sd"> Args:</span> -</span><span id="L-30"><a href="#L-30"><span class="linenos"> 30</span></a><span class="sd"> expression (sqlglot.Expression): expression to optimize</span> -</span><span id="L-31"><a href="#L-31"><span class="linenos"> 31</span></a><span class="sd"> leave_tables_isolated (bool):</span> -</span><span id="L-32"><a href="#L-32"><span class="linenos"> 32</span></a><span class="sd"> Returns:</span> -</span><span id="L-33"><a href="#L-33"><span class="linenos"> 33</span></a><span class="sd"> sqlglot.Expression: optimized expression</span> -</span><span id="L-34"><a href="#L-34"><span class="linenos"> 34</span></a><span class="sd"> """</span> -</span><span id="L-35"><a href="#L-35"><span class="linenos"> 35</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">merge_ctes</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="p">)</span> -</span><span id="L-36"><a href="#L-36"><span class="linenos"> 36</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">merge_derived_tables</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="p">)</span> -</span><span id="L-37"><a href="#L-37"><span class="linenos"> 37</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-8"><a href="#L-8"><span class="linenos"> 8</span></a><span class="k">def</span> <span class="nf">merge_subqueries</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> +</span><span id="L-9"><a href="#L-9"><span class="linenos"> 9</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-10"><a href="#L-10"><span class="linenos"> 10</span></a><span class="sd"> Rewrite sqlglot AST to merge derived tables into the outer query.</span> +</span><span id="L-11"><a href="#L-11"><span class="linenos"> 11</span></a> +</span><span id="L-12"><a href="#L-12"><span class="linenos"> 12</span></a><span class="sd"> This also merges CTEs if they are selected from only once.</span> +</span><span id="L-13"><a href="#L-13"><span class="linenos"> 13</span></a> +</span><span id="L-14"><a href="#L-14"><span class="linenos"> 14</span></a><span class="sd"> Example:</span> +</span><span id="L-15"><a href="#L-15"><span class="linenos"> 15</span></a><span class="sd"> >>> import sqlglot</span> +</span><span id="L-16"><a href="#L-16"><span class="linenos"> 16</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT a FROM (SELECT x.a FROM x) JOIN y")</span> +</span><span id="L-17"><a href="#L-17"><span class="linenos"> 17</span></a><span class="sd"> >>> merge_subqueries(expression).sql()</span> +</span><span id="L-18"><a href="#L-18"><span class="linenos"> 18</span></a><span class="sd"> 'SELECT x.a FROM x JOIN y'</span> +</span><span id="L-19"><a href="#L-19"><span class="linenos"> 19</span></a> +</span><span id="L-20"><a href="#L-20"><span class="linenos"> 20</span></a><span class="sd"> If `leave_tables_isolated` is True, this will not merge inner queries into outer</span> +</span><span id="L-21"><a href="#L-21"><span class="linenos"> 21</span></a><span class="sd"> queries if it would result in multiple table selects in a single query:</span> +</span><span id="L-22"><a href="#L-22"><span class="linenos"> 22</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT a FROM (SELECT x.a FROM x) JOIN y")</span> +</span><span id="L-23"><a href="#L-23"><span class="linenos"> 23</span></a><span class="sd"> >>> merge_subqueries(expression, leave_tables_isolated=True).sql()</span> +</span><span id="L-24"><a href="#L-24"><span class="linenos"> 24</span></a><span class="sd"> 'SELECT a FROM (SELECT x.a FROM x) JOIN y'</span> +</span><span id="L-25"><a href="#L-25"><span class="linenos"> 25</span></a> +</span><span id="L-26"><a href="#L-26"><span class="linenos"> 26</span></a><span class="sd"> Inspired by https://dev.mysql.com/doc/refman/8.0/en/derived-table-optimization.html</span> +</span><span id="L-27"><a href="#L-27"><span class="linenos"> 27</span></a> +</span><span id="L-28"><a href="#L-28"><span class="linenos"> 28</span></a><span class="sd"> Args:</span> +</span><span id="L-29"><a href="#L-29"><span class="linenos"> 29</span></a><span class="sd"> expression (sqlglot.Expression): expression to optimize</span> +</span><span id="L-30"><a href="#L-30"><span class="linenos"> 30</span></a><span class="sd"> leave_tables_isolated (bool):</span> +</span><span id="L-31"><a href="#L-31"><span class="linenos"> 31</span></a><span class="sd"> Returns:</span> +</span><span id="L-32"><a href="#L-32"><span class="linenos"> 32</span></a><span class="sd"> sqlglot.Expression: optimized expression</span> +</span><span id="L-33"><a href="#L-33"><span class="linenos"> 33</span></a><span class="sd"> """</span> +</span><span id="L-34"><a href="#L-34"><span class="linenos"> 34</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">merge_ctes</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="p">)</span> +</span><span id="L-35"><a href="#L-35"><span class="linenos"> 35</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">merge_derived_tables</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="p">)</span> +</span><span id="L-36"><a href="#L-36"><span class="linenos"> 36</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-37"><a href="#L-37"><span class="linenos"> 37</span></a> </span><span id="L-38"><a href="#L-38"><span class="linenos"> 38</span></a> -</span><span id="L-39"><a href="#L-39"><span class="linenos"> 39</span></a> -</span><span id="L-40"><a href="#L-40"><span class="linenos"> 40</span></a><span class="c1"># If a derived table has these Select args, it can't be merged</span> -</span><span id="L-41"><a href="#L-41"><span class="linenos"> 41</span></a><span class="n">UNMERGABLE_ARGS</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="o">.</span><span class="n">arg_types</span><span class="p">)</span> <span class="o">-</span> <span class="p">{</span> -</span><span id="L-42"><a href="#L-42"><span class="linenos"> 42</span></a> <span class="s2">"expressions"</span><span class="p">,</span> -</span><span id="L-43"><a href="#L-43"><span class="linenos"> 43</span></a> <span class="s2">"from"</span><span class="p">,</span> -</span><span id="L-44"><a href="#L-44"><span class="linenos"> 44</span></a> <span class="s2">"joins"</span><span class="p">,</span> -</span><span id="L-45"><a href="#L-45"><span class="linenos"> 45</span></a> <span class="s2">"where"</span><span class="p">,</span> -</span><span id="L-46"><a href="#L-46"><span class="linenos"> 46</span></a> <span class="s2">"order"</span><span class="p">,</span> -</span><span id="L-47"><a href="#L-47"><span class="linenos"> 47</span></a> <span class="s2">"hint"</span><span class="p">,</span> -</span><span id="L-48"><a href="#L-48"><span class="linenos"> 48</span></a><span class="p">}</span> +</span><span id="L-39"><a href="#L-39"><span class="linenos"> 39</span></a><span class="c1"># If a derived table has these Select args, it can't be merged</span> +</span><span id="L-40"><a href="#L-40"><span class="linenos"> 40</span></a><span class="n">UNMERGABLE_ARGS</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="o">.</span><span class="n">arg_types</span><span class="p">)</span> <span class="o">-</span> <span class="p">{</span> +</span><span id="L-41"><a href="#L-41"><span class="linenos"> 41</span></a> <span class="s2">"expressions"</span><span class="p">,</span> +</span><span id="L-42"><a href="#L-42"><span class="linenos"> 42</span></a> <span class="s2">"from"</span><span class="p">,</span> +</span><span id="L-43"><a href="#L-43"><span class="linenos"> 43</span></a> <span class="s2">"joins"</span><span class="p">,</span> +</span><span id="L-44"><a href="#L-44"><span class="linenos"> 44</span></a> <span class="s2">"where"</span><span class="p">,</span> +</span><span id="L-45"><a href="#L-45"><span class="linenos"> 45</span></a> <span class="s2">"order"</span><span class="p">,</span> +</span><span id="L-46"><a href="#L-46"><span class="linenos"> 46</span></a> <span class="s2">"hint"</span><span class="p">,</span> +</span><span id="L-47"><a href="#L-47"><span class="linenos"> 47</span></a><span class="p">}</span> +</span><span id="L-48"><a href="#L-48"><span class="linenos"> 48</span></a> </span><span id="L-49"><a href="#L-49"><span class="linenos"> 49</span></a> -</span><span id="L-50"><a href="#L-50"><span class="linenos"> 50</span></a> -</span><span id="L-51"><a href="#L-51"><span class="linenos"> 51</span></a><span class="k">def</span> <span class="nf">merge_ctes</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> -</span><span id="L-52"><a href="#L-52"><span class="linenos"> 52</span></a> <span class="n">scopes</span> <span class="o">=</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-53"><a href="#L-53"><span class="linenos"> 53</span></a> -</span><span id="L-54"><a href="#L-54"><span class="linenos"> 54</span></a> <span class="c1"># All places where we select from CTEs.</span> -</span><span id="L-55"><a href="#L-55"><span class="linenos"> 55</span></a> <span class="c1"># We key on the CTE scope so we can detect CTES that are selected from multiple times.</span> -</span><span id="L-56"><a href="#L-56"><span class="linenos"> 56</span></a> <span class="n">cte_selections</span> <span class="o">=</span> <span class="n">defaultdict</span><span class="p">(</span><span class="nb">list</span><span class="p">)</span> -</span><span id="L-57"><a href="#L-57"><span class="linenos"> 57</span></a> <span class="k">for</span> <span class="n">outer_scope</span> <span class="ow">in</span> <span class="n">scopes</span><span class="p">:</span> -</span><span id="L-58"><a href="#L-58"><span class="linenos"> 58</span></a> <span class="k">for</span> <span class="n">table</span><span class="p">,</span> <span class="n">inner_scope</span> <span class="ow">in</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> -</span><span id="L-59"><a href="#L-59"><span class="linenos"> 59</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">inner_scope</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">is_cte</span><span class="p">:</span> -</span><span id="L-60"><a href="#L-60"><span class="linenos"> 60</span></a> <span class="n">cte_selections</span><span class="p">[</span><span class="nb">id</span><span class="p">(</span><span class="n">inner_scope</span><span class="p">)]</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> -</span><span id="L-61"><a href="#L-61"><span class="linenos"> 61</span></a> <span class="p">(</span> -</span><span id="L-62"><a href="#L-62"><span class="linenos"> 62</span></a> <span class="n">outer_scope</span><span class="p">,</span> -</span><span id="L-63"><a href="#L-63"><span class="linenos"> 63</span></a> <span class="n">inner_scope</span><span class="p">,</span> -</span><span id="L-64"><a href="#L-64"><span class="linenos"> 64</span></a> <span class="n">table</span><span class="p">,</span> -</span><span id="L-65"><a href="#L-65"><span class="linenos"> 65</span></a> <span class="p">)</span> -</span><span id="L-66"><a href="#L-66"><span class="linenos"> 66</span></a> <span class="p">)</span> -</span><span id="L-67"><a href="#L-67"><span class="linenos"> 67</span></a> -</span><span id="L-68"><a href="#L-68"><span class="linenos"> 68</span></a> <span class="n">singular_cte_selections</span> <span class="o">=</span> <span class="p">[</span><span class="n">v</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">cte_selections</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">v</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">]</span> -</span><span id="L-69"><a href="#L-69"><span class="linenos"> 69</span></a> <span class="k">for</span> <span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">singular_cte_selections</span><span class="p">:</span> -</span><span id="L-70"><a href="#L-70"><span class="linenos"> 70</span></a> <span class="n">from_or_join</span> <span class="o">=</span> <span class="n">table</span><span class="o">.</span><span class="n">find_ancestor</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">From</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">)</span> -</span><span id="L-71"><a href="#L-71"><span class="linenos"> 71</span></a> <span class="k">if</span> <span class="n">_mergeable</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">):</span> -</span><span id="L-72"><a href="#L-72"><span class="linenos"> 72</span></a> <span class="n">alias</span> <span class="o">=</span> <span class="n">table</span><span class="o">.</span><span class="n">alias_or_name</span> -</span><span id="L-73"><a href="#L-73"><span class="linenos"> 73</span></a> <span class="n">_rename_inner_sources</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> -</span><span id="L-74"><a href="#L-74"><span class="linenos"> 74</span></a> <span class="n">_merge_from</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">table</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> -</span><span id="L-75"><a href="#L-75"><span class="linenos"> 75</span></a> <span class="n">_merge_expressions</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> -</span><span id="L-76"><a href="#L-76"><span class="linenos"> 76</span></a> <span class="n">_merge_joins</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">)</span> -</span><span id="L-77"><a href="#L-77"><span class="linenos"> 77</span></a> <span class="n">_merge_where</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">)</span> -</span><span id="L-78"><a href="#L-78"><span class="linenos"> 78</span></a> <span class="n">_merge_order</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">)</span> -</span><span id="L-79"><a href="#L-79"><span class="linenos"> 79</span></a> <span class="n">_merge_hints</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">)</span> -</span><span id="L-80"><a href="#L-80"><span class="linenos"> 80</span></a> <span class="n">_pop_cte</span><span class="p">(</span><span class="n">inner_scope</span><span class="p">)</span> -</span><span id="L-81"><a href="#L-81"><span class="linenos"> 81</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> -</span><span id="L-82"><a href="#L-82"><span class="linenos"> 82</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-50"><a href="#L-50"><span class="linenos"> 50</span></a><span class="k">def</span> <span class="nf">merge_ctes</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> +</span><span id="L-51"><a href="#L-51"><span class="linenos"> 51</span></a> <span class="n">scopes</span> <span class="o">=</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="L-52"><a href="#L-52"><span class="linenos"> 52</span></a> +</span><span id="L-53"><a href="#L-53"><span class="linenos"> 53</span></a> <span class="c1"># All places where we select from CTEs.</span> +</span><span id="L-54"><a href="#L-54"><span class="linenos"> 54</span></a> <span class="c1"># We key on the CTE scope so we can detect CTES that are selected from multiple times.</span> +</span><span id="L-55"><a href="#L-55"><span class="linenos"> 55</span></a> <span class="n">cte_selections</span> <span class="o">=</span> <span class="n">defaultdict</span><span class="p">(</span><span class="nb">list</span><span class="p">)</span> +</span><span id="L-56"><a href="#L-56"><span class="linenos"> 56</span></a> <span class="k">for</span> <span class="n">outer_scope</span> <span class="ow">in</span> <span class="n">scopes</span><span class="p">:</span> +</span><span id="L-57"><a href="#L-57"><span class="linenos"> 57</span></a> <span class="k">for</span> <span class="n">table</span><span class="p">,</span> <span class="n">inner_scope</span> <span class="ow">in</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> +</span><span id="L-58"><a href="#L-58"><span class="linenos"> 58</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">inner_scope</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">is_cte</span><span class="p">:</span> +</span><span id="L-59"><a href="#L-59"><span class="linenos"> 59</span></a> <span class="n">cte_selections</span><span class="p">[</span><span class="nb">id</span><span class="p">(</span><span class="n">inner_scope</span><span class="p">)]</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> +</span><span id="L-60"><a href="#L-60"><span class="linenos"> 60</span></a> <span class="p">(</span> +</span><span id="L-61"><a href="#L-61"><span class="linenos"> 61</span></a> <span class="n">outer_scope</span><span class="p">,</span> +</span><span id="L-62"><a href="#L-62"><span class="linenos"> 62</span></a> <span class="n">inner_scope</span><span class="p">,</span> +</span><span id="L-63"><a href="#L-63"><span class="linenos"> 63</span></a> <span class="n">table</span><span class="p">,</span> +</span><span id="L-64"><a href="#L-64"><span class="linenos"> 64</span></a> <span class="p">)</span> +</span><span id="L-65"><a href="#L-65"><span class="linenos"> 65</span></a> <span class="p">)</span> +</span><span id="L-66"><a href="#L-66"><span class="linenos"> 66</span></a> +</span><span id="L-67"><a href="#L-67"><span class="linenos"> 67</span></a> <span class="n">singular_cte_selections</span> <span class="o">=</span> <span class="p">[</span><span class="n">v</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">cte_selections</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">v</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">]</span> +</span><span id="L-68"><a href="#L-68"><span class="linenos"> 68</span></a> <span class="k">for</span> <span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">singular_cte_selections</span><span class="p">:</span> +</span><span id="L-69"><a href="#L-69"><span class="linenos"> 69</span></a> <span class="n">from_or_join</span> <span class="o">=</span> <span class="n">table</span><span class="o">.</span><span class="n">find_ancestor</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">From</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">)</span> +</span><span id="L-70"><a href="#L-70"><span class="linenos"> 70</span></a> <span class="k">if</span> <span class="n">_mergeable</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">):</span> +</span><span id="L-71"><a href="#L-71"><span class="linenos"> 71</span></a> <span class="n">alias</span> <span class="o">=</span> <span class="n">table</span><span class="o">.</span><span class="n">alias_or_name</span> +</span><span id="L-72"><a href="#L-72"><span class="linenos"> 72</span></a> <span class="n">_rename_inner_sources</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> +</span><span id="L-73"><a href="#L-73"><span class="linenos"> 73</span></a> <span class="n">_merge_from</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">table</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> +</span><span id="L-74"><a href="#L-74"><span class="linenos"> 74</span></a> <span class="n">_merge_expressions</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> +</span><span id="L-75"><a href="#L-75"><span class="linenos"> 75</span></a> <span class="n">_merge_joins</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">)</span> +</span><span id="L-76"><a href="#L-76"><span class="linenos"> 76</span></a> <span class="n">_merge_where</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">)</span> +</span><span id="L-77"><a href="#L-77"><span class="linenos"> 77</span></a> <span class="n">_merge_order</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">)</span> +</span><span id="L-78"><a href="#L-78"><span class="linenos"> 78</span></a> <span class="n">_merge_hints</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">)</span> +</span><span id="L-79"><a href="#L-79"><span class="linenos"> 79</span></a> <span class="n">_pop_cte</span><span class="p">(</span><span class="n">inner_scope</span><span class="p">)</span> +</span><span id="L-80"><a href="#L-80"><span class="linenos"> 80</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> +</span><span id="L-81"><a href="#L-81"><span class="linenos"> 81</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-82"><a href="#L-82"><span class="linenos"> 82</span></a> </span><span id="L-83"><a href="#L-83"><span class="linenos"> 83</span></a> -</span><span id="L-84"><a href="#L-84"><span class="linenos"> 84</span></a> -</span><span id="L-85"><a href="#L-85"><span class="linenos"> 85</span></a><span class="k">def</span> <span class="nf">merge_derived_tables</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> -</span><span id="L-86"><a href="#L-86"><span class="linenos"> 86</span></a> <span class="k">for</span> <span class="n">outer_scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-87"><a href="#L-87"><span class="linenos"> 87</span></a> <span class="k">for</span> <span class="n">subquery</span> <span class="ow">in</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">derived_tables</span><span class="p">:</span> -</span><span id="L-88"><a href="#L-88"><span class="linenos"> 88</span></a> <span class="n">from_or_join</span> <span class="o">=</span> <span class="n">subquery</span><span class="o">.</span><span class="n">find_ancestor</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">From</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">)</span> -</span><span id="L-89"><a href="#L-89"><span class="linenos"> 89</span></a> <span class="n">alias</span> <span class="o">=</span> <span class="n">subquery</span><span class="o">.</span><span class="n">alias_or_name</span> -</span><span id="L-90"><a href="#L-90"><span class="linenos"> 90</span></a> <span class="n">inner_scope</span> <span class="o">=</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">alias</span><span class="p">]</span> -</span><span id="L-91"><a href="#L-91"><span class="linenos"> 91</span></a> <span class="k">if</span> <span class="n">_mergeable</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">):</span> -</span><span id="L-92"><a href="#L-92"><span class="linenos"> 92</span></a> <span class="n">_rename_inner_sources</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> -</span><span id="L-93"><a href="#L-93"><span class="linenos"> 93</span></a> <span class="n">_merge_from</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">subquery</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> -</span><span id="L-94"><a href="#L-94"><span class="linenos"> 94</span></a> <span class="n">_merge_expressions</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> -</span><span id="L-95"><a href="#L-95"><span class="linenos"> 95</span></a> <span class="n">_merge_joins</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">)</span> -</span><span id="L-96"><a href="#L-96"><span class="linenos"> 96</span></a> <span class="n">_merge_where</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">)</span> -</span><span id="L-97"><a href="#L-97"><span class="linenos"> 97</span></a> <span class="n">_merge_order</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">)</span> -</span><span id="L-98"><a href="#L-98"><span class="linenos"> 98</span></a> <span class="n">_merge_hints</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">)</span> -</span><span id="L-99"><a href="#L-99"><span class="linenos"> 99</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> -</span><span id="L-100"><a href="#L-100"><span class="linenos">100</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-84"><a href="#L-84"><span class="linenos"> 84</span></a><span class="k">def</span> <span class="nf">merge_derived_tables</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> +</span><span id="L-85"><a href="#L-85"><span class="linenos"> 85</span></a> <span class="k">for</span> <span class="n">outer_scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-86"><a href="#L-86"><span class="linenos"> 86</span></a> <span class="k">for</span> <span class="n">subquery</span> <span class="ow">in</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">derived_tables</span><span class="p">:</span> +</span><span id="L-87"><a href="#L-87"><span class="linenos"> 87</span></a> <span class="n">from_or_join</span> <span class="o">=</span> <span class="n">subquery</span><span class="o">.</span><span class="n">find_ancestor</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">From</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">)</span> +</span><span id="L-88"><a href="#L-88"><span class="linenos"> 88</span></a> <span class="n">alias</span> <span class="o">=</span> <span class="n">subquery</span><span class="o">.</span><span class="n">alias_or_name</span> +</span><span id="L-89"><a href="#L-89"><span class="linenos"> 89</span></a> <span class="n">inner_scope</span> <span class="o">=</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">alias</span><span class="p">]</span> +</span><span id="L-90"><a href="#L-90"><span class="linenos"> 90</span></a> <span class="k">if</span> <span class="n">_mergeable</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">):</span> +</span><span id="L-91"><a href="#L-91"><span class="linenos"> 91</span></a> <span class="n">_rename_inner_sources</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> +</span><span id="L-92"><a href="#L-92"><span class="linenos"> 92</span></a> <span class="n">_merge_from</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">subquery</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> +</span><span id="L-93"><a href="#L-93"><span class="linenos"> 93</span></a> <span class="n">_merge_expressions</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> +</span><span id="L-94"><a href="#L-94"><span class="linenos"> 94</span></a> <span class="n">_merge_joins</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">)</span> +</span><span id="L-95"><a href="#L-95"><span class="linenos"> 95</span></a> <span class="n">_merge_where</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">)</span> +</span><span id="L-96"><a href="#L-96"><span class="linenos"> 96</span></a> <span class="n">_merge_order</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">)</span> +</span><span id="L-97"><a href="#L-97"><span class="linenos"> 97</span></a> <span class="n">_merge_hints</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">)</span> +</span><span id="L-98"><a href="#L-98"><span class="linenos"> 98</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> +</span><span id="L-99"><a href="#L-99"><span class="linenos"> 99</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-100"><a href="#L-100"><span class="linenos">100</span></a> </span><span id="L-101"><a href="#L-101"><span class="linenos">101</span></a> -</span><span id="L-102"><a href="#L-102"><span class="linenos">102</span></a> -</span><span id="L-103"><a href="#L-103"><span class="linenos">103</span></a><span class="k">def</span> <span class="nf">_mergeable</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">):</span> -</span><span id="L-104"><a href="#L-104"><span class="linenos">104</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-105"><a href="#L-105"><span class="linenos">105</span></a><span class="sd"> Return True if `inner_select` can be merged into outer query.</span> -</span><span id="L-106"><a href="#L-106"><span class="linenos">106</span></a> -</span><span id="L-107"><a href="#L-107"><span class="linenos">107</span></a><span class="sd"> Args:</span> -</span><span id="L-108"><a href="#L-108"><span class="linenos">108</span></a><span class="sd"> outer_scope (Scope)</span> -</span><span id="L-109"><a href="#L-109"><span class="linenos">109</span></a><span class="sd"> inner_scope (Scope)</span> -</span><span id="L-110"><a href="#L-110"><span class="linenos">110</span></a><span class="sd"> leave_tables_isolated (bool)</span> -</span><span id="L-111"><a href="#L-111"><span class="linenos">111</span></a><span class="sd"> from_or_join (exp.From|exp.Join)</span> -</span><span id="L-112"><a href="#L-112"><span class="linenos">112</span></a><span class="sd"> Returns:</span> -</span><span id="L-113"><a href="#L-113"><span class="linenos">113</span></a><span class="sd"> bool: True if can be merged</span> -</span><span id="L-114"><a href="#L-114"><span class="linenos">114</span></a><span class="sd"> """</span> -</span><span id="L-115"><a href="#L-115"><span class="linenos">115</span></a> <span class="n">inner_select</span> <span class="o">=</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span> -</span><span id="L-116"><a href="#L-116"><span class="linenos">116</span></a> -</span><span id="L-117"><a href="#L-117"><span class="linenos">117</span></a> <span class="k">def</span> <span class="nf">_is_a_window_expression_in_unmergable_operation</span><span class="p">():</span> -</span><span id="L-118"><a href="#L-118"><span class="linenos">118</span></a> <span class="n">window_expressions</span> <span class="o">=</span> <span class="n">inner_select</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Window</span><span class="p">)</span> -</span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a> <span class="n">window_alias_names</span> <span class="o">=</span> <span class="p">{</span><span class="n">window</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">alias_or_name</span> <span class="k">for</span> <span class="n">window</span> <span class="ow">in</span> <span class="n">window_expressions</span><span class="p">}</span> -</span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a> <span class="n">inner_select_name</span> <span class="o">=</span> <span class="n">inner_select</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">alias_or_name</span> -</span><span id="L-121"><a href="#L-121"><span class="linenos">121</span></a> <span class="n">unmergable_window_columns</span> <span class="o">=</span> <span class="p">[</span> -</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a> <span class="n">column</span> -</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">columns</span> -</span><span id="L-124"><a href="#L-124"><span class="linenos">124</span></a> <span class="k">if</span> <span class="n">column</span><span class="o">.</span><span class="n">find_ancestor</span><span class="p">(</span> -</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Where</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Group</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Order</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Having</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">AggFunc</span> -</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a> <span class="p">)</span> -</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a> <span class="p">]</span> -</span><span id="L-128"><a href="#L-128"><span class="linenos">128</span></a> <span class="n">window_expressions_in_unmergable</span> <span class="o">=</span> <span class="p">[</span> -</span><span id="L-129"><a href="#L-129"><span class="linenos">129</span></a> <span class="n">column</span> -</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">unmergable_window_columns</span> -</span><span id="L-131"><a href="#L-131"><span class="linenos">131</span></a> <span class="k">if</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> <span class="o">==</span> <span class="n">inner_select_name</span> <span class="ow">and</span> <span class="n">column</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">window_alias_names</span> -</span><span id="L-132"><a href="#L-132"><span class="linenos">132</span></a> <span class="p">]</span> -</span><span id="L-133"><a href="#L-133"><span class="linenos">133</span></a> <span class="k">return</span> <span class="nb">any</span><span class="p">(</span><span class="n">window_expressions_in_unmergable</span><span class="p">)</span> -</span><span id="L-134"><a href="#L-134"><span class="linenos">134</span></a> -</span><span id="L-135"><a href="#L-135"><span class="linenos">135</span></a> <span class="k">def</span> <span class="nf">_outer_select_joins_on_inner_select_join</span><span class="p">():</span> -</span><span id="L-136"><a href="#L-136"><span class="linenos">136</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-137"><a href="#L-137"><span class="linenos">137</span></a><span class="sd"> All columns from the inner select in the ON clause must be from the first FROM table.</span> -</span><span id="L-138"><a href="#L-138"><span class="linenos">138</span></a> -</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a><span class="sd"> That is, this can be merged:</span> -</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a><span class="sd"> SELECT * FROM x JOIN (SELECT y.a AS a FROM y JOIN z) AS q ON x.a = q.a</span> -</span><span id="L-141"><a href="#L-141"><span class="linenos">141</span></a><span class="sd"> ^^^ ^</span> -</span><span id="L-142"><a href="#L-142"><span class="linenos">142</span></a><span class="sd"> But this can't:</span> -</span><span id="L-143"><a href="#L-143"><span class="linenos">143</span></a><span class="sd"> SELECT * FROM x JOIN (SELECT z.a AS a FROM y JOIN z) AS q ON x.a = q.a</span> -</span><span id="L-144"><a href="#L-144"><span class="linenos">144</span></a><span class="sd"> ^^^ ^</span> -</span><span id="L-145"><a href="#L-145"><span class="linenos">145</span></a><span class="sd"> """</span> -</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">from_or_join</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">):</span> -</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a> <span class="k">return</span> <span class="kc">False</span> -</span><span id="L-148"><a href="#L-148"><span class="linenos">148</span></a> -</span><span id="L-149"><a href="#L-149"><span class="linenos">149</span></a> <span class="n">alias</span> <span class="o">=</span> <span class="n">from_or_join</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">alias_or_name</span> -</span><span id="L-150"><a href="#L-150"><span class="linenos">150</span></a> -</span><span id="L-151"><a href="#L-151"><span class="linenos">151</span></a> <span class="n">on</span> <span class="o">=</span> <span class="n">from_or_join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on"</span><span class="p">)</span> -</span><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">on</span><span class="p">:</span> -</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a> <span class="k">return</span> <span class="kc">False</span> -</span><span id="L-154"><a href="#L-154"><span class="linenos">154</span></a> <span class="n">selections</span> <span class="o">=</span> <span class="p">[</span><span class="n">c</span><span class="o">.</span><span class="n">name</span> <span class="k">for</span> <span class="n">c</span> <span class="ow">in</span> <span class="n">on</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">)</span> <span class="k">if</span> <span class="n">c</span><span class="o">.</span><span class="n">table</span> <span class="o">==</span> <span class="n">alias</span><span class="p">]</span> -</span><span id="L-155"><a href="#L-155"><span class="linenos">155</span></a> <span class="n">inner_from</span> <span class="o">=</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"from"</span><span class="p">)</span> -</span><span id="L-156"><a href="#L-156"><span class="linenos">156</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">inner_from</span><span class="p">:</span> -</span><span id="L-157"><a href="#L-157"><span class="linenos">157</span></a> <span class="k">return</span> <span class="kc">False</span> -</span><span id="L-158"><a href="#L-158"><span class="linenos">158</span></a> <span class="n">inner_from_table</span> <span class="o">=</span> <span class="n">inner_from</span><span class="o">.</span><span class="n">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias_or_name</span> -</span><span id="L-159"><a href="#L-159"><span class="linenos">159</span></a> <span class="n">inner_projections</span> <span class="o">=</span> <span class="p">{</span><span class="n">s</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">:</span> <span class="n">s</span> <span class="k">for</span> <span class="n">s</span> <span class="ow">in</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">selects</span><span class="p">}</span> -</span><span id="L-160"><a href="#L-160"><span class="linenos">160</span></a> <span class="k">return</span> <span class="nb">any</span><span class="p">(</span> -</span><span id="L-161"><a href="#L-161"><span class="linenos">161</span></a> <span class="n">col</span><span class="o">.</span><span class="n">table</span> <span class="o">!=</span> <span class="n">inner_from_table</span> -</span><span id="L-162"><a href="#L-162"><span class="linenos">162</span></a> <span class="k">for</span> <span class="n">selection</span> <span class="ow">in</span> <span class="n">selections</span> -</span><span id="L-163"><a href="#L-163"><span class="linenos">163</span></a> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">inner_projections</span><span class="p">[</span><span class="n">selection</span><span class="p">]</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">)</span> -</span><span id="L-164"><a href="#L-164"><span class="linenos">164</span></a> <span class="p">)</span> -</span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a> -</span><span id="L-166"><a href="#L-166"><span class="linenos">166</span></a> <span class="k">return</span> <span class="p">(</span> -</span><span id="L-167"><a href="#L-167"><span class="linenos">167</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">outer_scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">)</span> -</span><span id="L-168"><a href="#L-168"><span class="linenos">168</span></a> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">inner_select</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">)</span> -</span><span id="L-169"><a href="#L-169"><span class="linenos">169</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">any</span><span class="p">(</span><span class="n">inner_select</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">arg</span><span class="p">)</span> <span class="k">for</span> <span class="n">arg</span> <span class="ow">in</span> <span class="n">UNMERGABLE_ARGS</span><span class="p">)</span> -</span><span id="L-170"><a href="#L-170"><span class="linenos">170</span></a> <span class="ow">and</span> <span class="n">inner_select</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"from"</span><span class="p">)</span> -</span><span id="L-171"><a href="#L-171"><span class="linenos">171</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">any</span><span class="p">(</span><span class="n">e</span><span class="o">.</span><span class="n">find</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">AggFunc</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">)</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">inner_select</span><span class="o">.</span><span class="n">expressions</span><span class="p">)</span> -</span><span id="L-172"><a href="#L-172"><span class="linenos">172</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="p">(</span><span class="n">leave_tables_isolated</span> <span class="ow">and</span> <span class="nb">len</span><span class="p">(</span><span class="n">outer_scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">)</span> <span class="o">></span> <span class="mi">1</span><span class="p">)</span> -</span><span id="L-173"><a href="#L-173"><span class="linenos">173</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="p">(</span> -</span><span id="L-174"><a href="#L-174"><span class="linenos">174</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">from_or_join</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">)</span> -</span><span id="L-175"><a href="#L-175"><span class="linenos">175</span></a> <span class="ow">and</span> <span class="n">inner_select</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"where"</span><span class="p">)</span> -</span><span id="L-176"><a href="#L-176"><span class="linenos">176</span></a> <span class="ow">and</span> <span class="n">from_or_join</span><span class="o">.</span><span class="n">side</span> <span class="ow">in</span> <span class="p">{</span><span class="s2">"FULL"</span><span class="p">,</span> <span class="s2">"LEFT"</span><span class="p">,</span> <span class="s2">"RIGHT"</span><span class="p">}</span> -</span><span id="L-177"><a href="#L-177"><span class="linenos">177</span></a> <span class="p">)</span> -</span><span id="L-178"><a href="#L-178"><span class="linenos">178</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="p">(</span> -</span><span id="L-179"><a href="#L-179"><span class="linenos">179</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">from_or_join</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">From</span><span class="p">)</span> -</span><span id="L-180"><a href="#L-180"><span class="linenos">180</span></a> <span class="ow">and</span> <span class="n">inner_select</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"where"</span><span class="p">)</span> -</span><span id="L-181"><a href="#L-181"><span class="linenos">181</span></a> <span class="ow">and</span> <span class="nb">any</span><span class="p">(</span> -</span><span id="L-182"><a href="#L-182"><span class="linenos">182</span></a> <span class="n">j</span><span class="o">.</span><span class="n">side</span> <span class="ow">in</span> <span class="p">{</span><span class="s2">"FULL"</span><span class="p">,</span> <span class="s2">"RIGHT"</span><span class="p">}</span> <span class="k">for</span> <span class="n">j</span> <span class="ow">in</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="p">[])</span> -</span><span id="L-183"><a href="#L-183"><span class="linenos">183</span></a> <span class="p">)</span> -</span><span id="L-184"><a href="#L-184"><span class="linenos">184</span></a> <span class="p">)</span> -</span><span id="L-185"><a href="#L-185"><span class="linenos">185</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="n">_outer_select_joins_on_inner_select_join</span><span class="p">()</span> -</span><span id="L-186"><a href="#L-186"><span class="linenos">186</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="n">_is_a_window_expression_in_unmergable_operation</span><span class="p">()</span> -</span><span id="L-187"><a href="#L-187"><span class="linenos">187</span></a> <span class="p">)</span> +</span><span id="L-102"><a href="#L-102"><span class="linenos">102</span></a><span class="k">def</span> <span class="nf">_mergeable</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">):</span> +</span><span id="L-103"><a href="#L-103"><span class="linenos">103</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-104"><a href="#L-104"><span class="linenos">104</span></a><span class="sd"> Return True if `inner_select` can be merged into outer query.</span> +</span><span id="L-105"><a href="#L-105"><span class="linenos">105</span></a> +</span><span id="L-106"><a href="#L-106"><span class="linenos">106</span></a><span class="sd"> Args:</span> +</span><span id="L-107"><a href="#L-107"><span class="linenos">107</span></a><span class="sd"> outer_scope (Scope)</span> +</span><span id="L-108"><a href="#L-108"><span class="linenos">108</span></a><span class="sd"> inner_scope (Scope)</span> +</span><span id="L-109"><a href="#L-109"><span class="linenos">109</span></a><span class="sd"> leave_tables_isolated (bool)</span> +</span><span id="L-110"><a href="#L-110"><span class="linenos">110</span></a><span class="sd"> from_or_join (exp.From|exp.Join)</span> +</span><span id="L-111"><a href="#L-111"><span class="linenos">111</span></a><span class="sd"> Returns:</span> +</span><span id="L-112"><a href="#L-112"><span class="linenos">112</span></a><span class="sd"> bool: True if can be merged</span> +</span><span id="L-113"><a href="#L-113"><span class="linenos">113</span></a><span class="sd"> """</span> +</span><span id="L-114"><a href="#L-114"><span class="linenos">114</span></a> <span class="n">inner_select</span> <span class="o">=</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span> +</span><span id="L-115"><a href="#L-115"><span class="linenos">115</span></a> +</span><span id="L-116"><a href="#L-116"><span class="linenos">116</span></a> <span class="k">def</span> <span class="nf">_is_a_window_expression_in_unmergable_operation</span><span class="p">():</span> +</span><span id="L-117"><a href="#L-117"><span class="linenos">117</span></a> <span class="n">window_expressions</span> <span class="o">=</span> <span class="n">inner_select</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Window</span><span class="p">)</span> +</span><span id="L-118"><a href="#L-118"><span class="linenos">118</span></a> <span class="n">window_alias_names</span> <span class="o">=</span> <span class="p">{</span><span class="n">window</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">alias_or_name</span> <span class="k">for</span> <span class="n">window</span> <span class="ow">in</span> <span class="n">window_expressions</span><span class="p">}</span> +</span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a> <span class="n">inner_select_name</span> <span class="o">=</span> <span class="n">inner_select</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">alias_or_name</span> +</span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a> <span class="n">unmergable_window_columns</span> <span class="o">=</span> <span class="p">[</span> +</span><span id="L-121"><a href="#L-121"><span class="linenos">121</span></a> <span class="n">column</span> +</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">columns</span> +</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a> <span class="k">if</span> <span class="n">column</span><span class="o">.</span><span class="n">find_ancestor</span><span class="p">(</span> +</span><span id="L-124"><a href="#L-124"><span class="linenos">124</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Where</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Group</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Order</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Having</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">AggFunc</span> +</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a> <span class="p">)</span> +</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a> <span class="p">]</span> +</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a> <span class="n">window_expressions_in_unmergable</span> <span class="o">=</span> <span class="p">[</span> +</span><span id="L-128"><a href="#L-128"><span class="linenos">128</span></a> <span class="n">column</span> +</span><span id="L-129"><a href="#L-129"><span class="linenos">129</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">unmergable_window_columns</span> +</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a> <span class="k">if</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> <span class="o">==</span> <span class="n">inner_select_name</span> <span class="ow">and</span> <span class="n">column</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">window_alias_names</span> +</span><span id="L-131"><a href="#L-131"><span class="linenos">131</span></a> <span class="p">]</span> +</span><span id="L-132"><a href="#L-132"><span class="linenos">132</span></a> <span class="k">return</span> <span class="nb">any</span><span class="p">(</span><span class="n">window_expressions_in_unmergable</span><span class="p">)</span> +</span><span id="L-133"><a href="#L-133"><span class="linenos">133</span></a> +</span><span id="L-134"><a href="#L-134"><span class="linenos">134</span></a> <span class="k">def</span> <span class="nf">_outer_select_joins_on_inner_select_join</span><span class="p">():</span> +</span><span id="L-135"><a href="#L-135"><span class="linenos">135</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-136"><a href="#L-136"><span class="linenos">136</span></a><span class="sd"> All columns from the inner select in the ON clause must be from the first FROM table.</span> +</span><span id="L-137"><a href="#L-137"><span class="linenos">137</span></a> +</span><span id="L-138"><a href="#L-138"><span class="linenos">138</span></a><span class="sd"> That is, this can be merged:</span> +</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a><span class="sd"> SELECT * FROM x JOIN (SELECT y.a AS a FROM y JOIN z) AS q ON x.a = q.a</span> +</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a><span class="sd"> ^^^ ^</span> +</span><span id="L-141"><a href="#L-141"><span class="linenos">141</span></a><span class="sd"> But this can't:</span> +</span><span id="L-142"><a href="#L-142"><span class="linenos">142</span></a><span class="sd"> SELECT * FROM x JOIN (SELECT z.a AS a FROM y JOIN z) AS q ON x.a = q.a</span> +</span><span id="L-143"><a href="#L-143"><span class="linenos">143</span></a><span class="sd"> ^^^ ^</span> +</span><span id="L-144"><a href="#L-144"><span class="linenos">144</span></a><span class="sd"> """</span> +</span><span id="L-145"><a href="#L-145"><span class="linenos">145</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">from_or_join</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">):</span> +</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a> <span class="k">return</span> <span class="kc">False</span> +</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a> +</span><span id="L-148"><a href="#L-148"><span class="linenos">148</span></a> <span class="n">alias</span> <span class="o">=</span> <span class="n">from_or_join</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">alias_or_name</span> +</span><span id="L-149"><a href="#L-149"><span class="linenos">149</span></a> +</span><span id="L-150"><a href="#L-150"><span class="linenos">150</span></a> <span class="n">on</span> <span class="o">=</span> <span class="n">from_or_join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on"</span><span class="p">)</span> +</span><span id="L-151"><a href="#L-151"><span class="linenos">151</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">on</span><span class="p">:</span> +</span><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a> <span class="k">return</span> <span class="kc">False</span> +</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a> <span class="n">selections</span> <span class="o">=</span> <span class="p">[</span><span class="n">c</span><span class="o">.</span><span class="n">name</span> <span class="k">for</span> <span class="n">c</span> <span class="ow">in</span> <span class="n">on</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">)</span> <span class="k">if</span> <span class="n">c</span><span class="o">.</span><span class="n">table</span> <span class="o">==</span> <span class="n">alias</span><span class="p">]</span> +</span><span id="L-154"><a href="#L-154"><span class="linenos">154</span></a> <span class="n">inner_from</span> <span class="o">=</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"from"</span><span class="p">)</span> +</span><span id="L-155"><a href="#L-155"><span class="linenos">155</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">inner_from</span><span class="p">:</span> +</span><span id="L-156"><a href="#L-156"><span class="linenos">156</span></a> <span class="k">return</span> <span class="kc">False</span> +</span><span id="L-157"><a href="#L-157"><span class="linenos">157</span></a> <span class="n">inner_from_table</span> <span class="o">=</span> <span class="n">inner_from</span><span class="o">.</span><span class="n">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias_or_name</span> +</span><span id="L-158"><a href="#L-158"><span class="linenos">158</span></a> <span class="n">inner_projections</span> <span class="o">=</span> <span class="p">{</span><span class="n">s</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">:</span> <span class="n">s</span> <span class="k">for</span> <span class="n">s</span> <span class="ow">in</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">selects</span><span class="p">}</span> +</span><span id="L-159"><a href="#L-159"><span class="linenos">159</span></a> <span class="k">return</span> <span class="nb">any</span><span class="p">(</span> +</span><span id="L-160"><a href="#L-160"><span class="linenos">160</span></a> <span class="n">col</span><span class="o">.</span><span class="n">table</span> <span class="o">!=</span> <span class="n">inner_from_table</span> +</span><span id="L-161"><a href="#L-161"><span class="linenos">161</span></a> <span class="k">for</span> <span class="n">selection</span> <span class="ow">in</span> <span class="n">selections</span> +</span><span id="L-162"><a href="#L-162"><span class="linenos">162</span></a> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">inner_projections</span><span class="p">[</span><span class="n">selection</span><span class="p">]</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">)</span> +</span><span id="L-163"><a href="#L-163"><span class="linenos">163</span></a> <span class="p">)</span> +</span><span id="L-164"><a href="#L-164"><span class="linenos">164</span></a> +</span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a> <span class="k">return</span> <span class="p">(</span> +</span><span id="L-166"><a href="#L-166"><span class="linenos">166</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">outer_scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">)</span> +</span><span id="L-167"><a href="#L-167"><span class="linenos">167</span></a> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">inner_select</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">)</span> +</span><span id="L-168"><a href="#L-168"><span class="linenos">168</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">any</span><span class="p">(</span><span class="n">inner_select</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">arg</span><span class="p">)</span> <span class="k">for</span> <span class="n">arg</span> <span class="ow">in</span> <span class="n">UNMERGABLE_ARGS</span><span class="p">)</span> +</span><span id="L-169"><a href="#L-169"><span class="linenos">169</span></a> <span class="ow">and</span> <span class="n">inner_select</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"from"</span><span class="p">)</span> +</span><span id="L-170"><a href="#L-170"><span class="linenos">170</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">any</span><span class="p">(</span><span class="n">e</span><span class="o">.</span><span class="n">find</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">AggFunc</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">)</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">inner_select</span><span class="o">.</span><span class="n">expressions</span><span class="p">)</span> +</span><span id="L-171"><a href="#L-171"><span class="linenos">171</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="p">(</span><span class="n">leave_tables_isolated</span> <span class="ow">and</span> <span class="nb">len</span><span class="p">(</span><span class="n">outer_scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">)</span> <span class="o">></span> <span class="mi">1</span><span class="p">)</span> +</span><span id="L-172"><a href="#L-172"><span class="linenos">172</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="p">(</span> +</span><span id="L-173"><a href="#L-173"><span class="linenos">173</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">from_or_join</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">)</span> +</span><span id="L-174"><a href="#L-174"><span class="linenos">174</span></a> <span class="ow">and</span> <span class="n">inner_select</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"where"</span><span class="p">)</span> +</span><span id="L-175"><a href="#L-175"><span class="linenos">175</span></a> <span class="ow">and</span> <span class="n">from_or_join</span><span class="o">.</span><span class="n">side</span> <span class="ow">in</span> <span class="p">{</span><span class="s2">"FULL"</span><span class="p">,</span> <span class="s2">"LEFT"</span><span class="p">,</span> <span class="s2">"RIGHT"</span><span class="p">}</span> +</span><span id="L-176"><a href="#L-176"><span class="linenos">176</span></a> <span class="p">)</span> +</span><span id="L-177"><a href="#L-177"><span class="linenos">177</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="p">(</span> +</span><span id="L-178"><a href="#L-178"><span class="linenos">178</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">from_or_join</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">From</span><span class="p">)</span> +</span><span id="L-179"><a href="#L-179"><span class="linenos">179</span></a> <span class="ow">and</span> <span class="n">inner_select</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"where"</span><span class="p">)</span> +</span><span id="L-180"><a href="#L-180"><span class="linenos">180</span></a> <span class="ow">and</span> <span class="nb">any</span><span class="p">(</span> +</span><span id="L-181"><a href="#L-181"><span class="linenos">181</span></a> <span class="n">j</span><span class="o">.</span><span class="n">side</span> <span class="ow">in</span> <span class="p">{</span><span class="s2">"FULL"</span><span class="p">,</span> <span class="s2">"RIGHT"</span><span class="p">}</span> <span class="k">for</span> <span class="n">j</span> <span class="ow">in</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="p">[])</span> +</span><span id="L-182"><a href="#L-182"><span class="linenos">182</span></a> <span class="p">)</span> +</span><span id="L-183"><a href="#L-183"><span class="linenos">183</span></a> <span class="p">)</span> +</span><span id="L-184"><a href="#L-184"><span class="linenos">184</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="n">_outer_select_joins_on_inner_select_join</span><span class="p">()</span> +</span><span id="L-185"><a href="#L-185"><span class="linenos">185</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="n">_is_a_window_expression_in_unmergable_operation</span><span class="p">()</span> +</span><span id="L-186"><a href="#L-186"><span class="linenos">186</span></a> <span class="p">)</span> +</span><span id="L-187"><a href="#L-187"><span class="linenos">187</span></a> </span><span id="L-188"><a href="#L-188"><span class="linenos">188</span></a> -</span><span id="L-189"><a href="#L-189"><span class="linenos">189</span></a> -</span><span id="L-190"><a href="#L-190"><span class="linenos">190</span></a><span class="k">def</span> <span class="nf">_rename_inner_sources</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">alias</span><span class="p">):</span> -</span><span id="L-191"><a href="#L-191"><span class="linenos">191</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-192"><a href="#L-192"><span class="linenos">192</span></a><span class="sd"> Renames any sources in the inner query that conflict with names in the outer query.</span> -</span><span id="L-193"><a href="#L-193"><span class="linenos">193</span></a> -</span><span id="L-194"><a href="#L-194"><span class="linenos">194</span></a><span class="sd"> Args:</span> -</span><span id="L-195"><a href="#L-195"><span class="linenos">195</span></a><span class="sd"> outer_scope (sqlglot.optimizer.scope.Scope)</span> -</span><span id="L-196"><a href="#L-196"><span class="linenos">196</span></a><span class="sd"> inner_scope (sqlglot.optimizer.scope.Scope)</span> -</span><span id="L-197"><a href="#L-197"><span class="linenos">197</span></a><span class="sd"> alias (str)</span> -</span><span id="L-198"><a href="#L-198"><span class="linenos">198</span></a><span class="sd"> """</span> -</span><span id="L-199"><a href="#L-199"><span class="linenos">199</span></a> <span class="n">taken</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">outer_scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">)</span> -</span><span id="L-200"><a href="#L-200"><span class="linenos">200</span></a> <span class="n">conflicts</span> <span class="o">=</span> <span class="n">taken</span><span class="o">.</span><span class="n">intersection</span><span class="p">(</span><span class="nb">set</span><span class="p">(</span><span class="n">inner_scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">))</span> -</span><span id="L-201"><a href="#L-201"><span class="linenos">201</span></a> <span class="n">conflicts</span> <span class="o">-=</span> <span class="p">{</span><span class="n">alias</span><span class="p">}</span> -</span><span id="L-202"><a href="#L-202"><span class="linenos">202</span></a> -</span><span id="L-203"><a href="#L-203"><span class="linenos">203</span></a> <span class="k">for</span> <span class="n">conflict</span> <span class="ow">in</span> <span class="n">conflicts</span><span class="p">:</span> -</span><span id="L-204"><a href="#L-204"><span class="linenos">204</span></a> <span class="n">new_name</span> <span class="o">=</span> <span class="n">find_new_name</span><span class="p">(</span><span class="n">taken</span><span class="p">,</span> <span class="n">conflict</span><span class="p">)</span> -</span><span id="L-205"><a href="#L-205"><span class="linenos">205</span></a> -</span><span id="L-206"><a href="#L-206"><span class="linenos">206</span></a> <span class="n">source</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">[</span><span class="n">conflict</span><span class="p">]</span> -</span><span id="L-207"><a href="#L-207"><span class="linenos">207</span></a> <span class="n">new_alias</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">new_name</span><span class="p">)</span> -</span><span id="L-208"><a href="#L-208"><span class="linenos">208</span></a> -</span><span id="L-209"><a href="#L-209"><span class="linenos">209</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">):</span> -</span><span id="L-210"><a href="#L-210"><span class="linenos">210</span></a> <span class="n">source</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">new_alias</span><span class="p">))</span> -</span><span id="L-211"><a href="#L-211"><span class="linenos">211</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">)</span> <span class="ow">and</span> <span class="n">source</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span> -</span><span id="L-212"><a href="#L-212"><span class="linenos">212</span></a> <span class="n">source</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">new_alias</span><span class="p">)</span> -</span><span id="L-213"><a href="#L-213"><span class="linenos">213</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> -</span><span id="L-214"><a href="#L-214"><span class="linenos">214</span></a> <span class="n">source</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">alias_</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">new_alias</span><span class="p">))</span> -</span><span id="L-215"><a href="#L-215"><span class="linenos">215</span></a> -</span><span id="L-216"><a href="#L-216"><span class="linenos">216</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">source_columns</span><span class="p">(</span><span class="n">conflict</span><span class="p">):</span> -</span><span id="L-217"><a href="#L-217"><span class="linenos">217</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">new_name</span><span class="p">))</span> -</span><span id="L-218"><a href="#L-218"><span class="linenos">218</span></a> -</span><span id="L-219"><a href="#L-219"><span class="linenos">219</span></a> <span class="n">inner_scope</span><span class="o">.</span><span class="n">rename_source</span><span class="p">(</span><span class="n">conflict</span><span class="p">,</span> <span class="n">new_name</span><span class="p">)</span> +</span><span id="L-189"><a href="#L-189"><span class="linenos">189</span></a><span class="k">def</span> <span class="nf">_rename_inner_sources</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">alias</span><span class="p">):</span> +</span><span id="L-190"><a href="#L-190"><span class="linenos">190</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-191"><a href="#L-191"><span class="linenos">191</span></a><span class="sd"> Renames any sources in the inner query that conflict with names in the outer query.</span> +</span><span id="L-192"><a href="#L-192"><span class="linenos">192</span></a> +</span><span id="L-193"><a href="#L-193"><span class="linenos">193</span></a><span class="sd"> Args:</span> +</span><span id="L-194"><a href="#L-194"><span class="linenos">194</span></a><span class="sd"> outer_scope (sqlglot.optimizer.scope.Scope)</span> +</span><span id="L-195"><a href="#L-195"><span class="linenos">195</span></a><span class="sd"> inner_scope (sqlglot.optimizer.scope.Scope)</span> +</span><span id="L-196"><a href="#L-196"><span class="linenos">196</span></a><span class="sd"> alias (str)</span> +</span><span id="L-197"><a href="#L-197"><span class="linenos">197</span></a><span class="sd"> """</span> +</span><span id="L-198"><a href="#L-198"><span class="linenos">198</span></a> <span class="n">taken</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">outer_scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">)</span> +</span><span id="L-199"><a href="#L-199"><span class="linenos">199</span></a> <span class="n">conflicts</span> <span class="o">=</span> <span class="n">taken</span><span class="o">.</span><span class="n">intersection</span><span class="p">(</span><span class="nb">set</span><span class="p">(</span><span class="n">inner_scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">))</span> +</span><span id="L-200"><a href="#L-200"><span class="linenos">200</span></a> <span class="n">conflicts</span> <span class="o">-=</span> <span class="p">{</span><span class="n">alias</span><span class="p">}</span> +</span><span id="L-201"><a href="#L-201"><span class="linenos">201</span></a> +</span><span id="L-202"><a href="#L-202"><span class="linenos">202</span></a> <span class="k">for</span> <span class="n">conflict</span> <span class="ow">in</span> <span class="n">conflicts</span><span class="p">:</span> +</span><span id="L-203"><a href="#L-203"><span class="linenos">203</span></a> <span class="n">new_name</span> <span class="o">=</span> <span class="n">find_new_name</span><span class="p">(</span><span class="n">taken</span><span class="p">,</span> <span class="n">conflict</span><span class="p">)</span> +</span><span id="L-204"><a href="#L-204"><span class="linenos">204</span></a> +</span><span id="L-205"><a href="#L-205"><span class="linenos">205</span></a> <span class="n">source</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">[</span><span class="n">conflict</span><span class="p">]</span> +</span><span id="L-206"><a href="#L-206"><span class="linenos">206</span></a> <span class="n">new_alias</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">new_name</span><span class="p">)</span> +</span><span id="L-207"><a href="#L-207"><span class="linenos">207</span></a> +</span><span id="L-208"><a href="#L-208"><span class="linenos">208</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">):</span> +</span><span id="L-209"><a href="#L-209"><span class="linenos">209</span></a> <span class="n">source</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">new_alias</span><span class="p">))</span> +</span><span id="L-210"><a href="#L-210"><span class="linenos">210</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">)</span> <span class="ow">and</span> <span class="n">source</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span> +</span><span id="L-211"><a href="#L-211"><span class="linenos">211</span></a> <span class="n">source</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">new_alias</span><span class="p">)</span> +</span><span id="L-212"><a href="#L-212"><span class="linenos">212</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> +</span><span id="L-213"><a href="#L-213"><span class="linenos">213</span></a> <span class="n">source</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">alias_</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">new_alias</span><span class="p">))</span> +</span><span id="L-214"><a href="#L-214"><span class="linenos">214</span></a> +</span><span id="L-215"><a href="#L-215"><span class="linenos">215</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">source_columns</span><span class="p">(</span><span class="n">conflict</span><span class="p">):</span> +</span><span id="L-216"><a href="#L-216"><span class="linenos">216</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">new_name</span><span class="p">))</span> +</span><span id="L-217"><a href="#L-217"><span class="linenos">217</span></a> +</span><span id="L-218"><a href="#L-218"><span class="linenos">218</span></a> <span class="n">inner_scope</span><span class="o">.</span><span class="n">rename_source</span><span class="p">(</span><span class="n">conflict</span><span class="p">,</span> <span class="n">new_name</span><span class="p">)</span> +</span><span id="L-219"><a href="#L-219"><span class="linenos">219</span></a> </span><span id="L-220"><a href="#L-220"><span class="linenos">220</span></a> -</span><span id="L-221"><a href="#L-221"><span class="linenos">221</span></a> -</span><span id="L-222"><a href="#L-222"><span class="linenos">222</span></a><span class="k">def</span> <span class="nf">_merge_from</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">node_to_replace</span><span class="p">,</span> <span class="n">alias</span><span class="p">):</span> -</span><span id="L-223"><a href="#L-223"><span class="linenos">223</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-224"><a href="#L-224"><span class="linenos">224</span></a><span class="sd"> Merge FROM clause of inner query into outer query.</span> -</span><span id="L-225"><a href="#L-225"><span class="linenos">225</span></a> -</span><span id="L-226"><a href="#L-226"><span class="linenos">226</span></a><span class="sd"> Args:</span> -</span><span id="L-227"><a href="#L-227"><span class="linenos">227</span></a><span class="sd"> outer_scope (sqlglot.optimizer.scope.Scope)</span> -</span><span id="L-228"><a href="#L-228"><span class="linenos">228</span></a><span class="sd"> inner_scope (sqlglot.optimizer.scope.Scope)</span> -</span><span id="L-229"><a href="#L-229"><span class="linenos">229</span></a><span class="sd"> node_to_replace (exp.Subquery|exp.Table)</span> -</span><span id="L-230"><a href="#L-230"><span class="linenos">230</span></a><span class="sd"> alias (str)</span> -</span><span id="L-231"><a href="#L-231"><span class="linenos">231</span></a><span class="sd"> """</span> -</span><span id="L-232"><a href="#L-232"><span class="linenos">232</span></a> <span class="n">new_subquery</span> <span class="o">=</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"from"</span><span class="p">)</span><span class="o">.</span><span class="n">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> -</span><span id="L-233"><a href="#L-233"><span class="linenos">233</span></a> <span class="n">node_to_replace</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">new_subquery</span><span class="p">)</span> -</span><span id="L-234"><a href="#L-234"><span class="linenos">234</span></a> <span class="k">for</span> <span class="n">join_hint</span> <span class="ow">in</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">join_hints</span><span class="p">:</span> -</span><span id="L-235"><a href="#L-235"><span class="linenos">235</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="n">join_hint</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">)</span> -</span><span id="L-236"><a href="#L-236"><span class="linenos">236</span></a> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> -</span><span id="L-237"><a href="#L-237"><span class="linenos">237</span></a> <span class="k">if</span> <span class="n">table</span><span class="o">.</span><span class="n">alias_or_name</span> <span class="o">==</span> <span class="n">node_to_replace</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">:</span> -</span><span id="L-238"><a href="#L-238"><span class="linenos">238</span></a> <span class="n">table</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"this"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">new_subquery</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">))</span> -</span><span id="L-239"><a href="#L-239"><span class="linenos">239</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">remove_source</span><span class="p">(</span><span class="n">alias</span><span class="p">)</span> -</span><span id="L-240"><a href="#L-240"><span class="linenos">240</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">add_source</span><span class="p">(</span> -</span><span id="L-241"><a href="#L-241"><span class="linenos">241</span></a> <span class="n">new_subquery</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">,</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">new_subquery</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">]</span> -</span><span id="L-242"><a href="#L-242"><span class="linenos">242</span></a> <span class="p">)</span> +</span><span id="L-221"><a href="#L-221"><span class="linenos">221</span></a><span class="k">def</span> <span class="nf">_merge_from</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">node_to_replace</span><span class="p">,</span> <span class="n">alias</span><span class="p">):</span> +</span><span id="L-222"><a href="#L-222"><span class="linenos">222</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-223"><a href="#L-223"><span class="linenos">223</span></a><span class="sd"> Merge FROM clause of inner query into outer query.</span> +</span><span id="L-224"><a href="#L-224"><span class="linenos">224</span></a> +</span><span id="L-225"><a href="#L-225"><span class="linenos">225</span></a><span class="sd"> Args:</span> +</span><span id="L-226"><a href="#L-226"><span class="linenos">226</span></a><span class="sd"> outer_scope (sqlglot.optimizer.scope.Scope)</span> +</span><span id="L-227"><a href="#L-227"><span class="linenos">227</span></a><span class="sd"> inner_scope (sqlglot.optimizer.scope.Scope)</span> +</span><span id="L-228"><a href="#L-228"><span class="linenos">228</span></a><span class="sd"> node_to_replace (exp.Subquery|exp.Table)</span> +</span><span id="L-229"><a href="#L-229"><span class="linenos">229</span></a><span class="sd"> alias (str)</span> +</span><span id="L-230"><a href="#L-230"><span class="linenos">230</span></a><span class="sd"> """</span> +</span><span id="L-231"><a href="#L-231"><span class="linenos">231</span></a> <span class="n">new_subquery</span> <span class="o">=</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"from"</span><span class="p">)</span><span class="o">.</span><span class="n">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> +</span><span id="L-232"><a href="#L-232"><span class="linenos">232</span></a> <span class="n">node_to_replace</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">new_subquery</span><span class="p">)</span> +</span><span id="L-233"><a href="#L-233"><span class="linenos">233</span></a> <span class="k">for</span> <span class="n">join_hint</span> <span class="ow">in</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">join_hints</span><span class="p">:</span> +</span><span id="L-234"><a href="#L-234"><span class="linenos">234</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="n">join_hint</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">)</span> +</span><span id="L-235"><a href="#L-235"><span class="linenos">235</span></a> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> +</span><span id="L-236"><a href="#L-236"><span class="linenos">236</span></a> <span class="k">if</span> <span class="n">table</span><span class="o">.</span><span class="n">alias_or_name</span> <span class="o">==</span> <span class="n">node_to_replace</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">:</span> +</span><span id="L-237"><a href="#L-237"><span class="linenos">237</span></a> <span class="n">table</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"this"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">new_subquery</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">))</span> +</span><span id="L-238"><a href="#L-238"><span class="linenos">238</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">remove_source</span><span class="p">(</span><span class="n">alias</span><span class="p">)</span> +</span><span id="L-239"><a href="#L-239"><span class="linenos">239</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">add_source</span><span class="p">(</span> +</span><span id="L-240"><a href="#L-240"><span class="linenos">240</span></a> <span class="n">new_subquery</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">,</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">new_subquery</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">]</span> +</span><span id="L-241"><a href="#L-241"><span class="linenos">241</span></a> <span class="p">)</span> +</span><span id="L-242"><a href="#L-242"><span class="linenos">242</span></a> </span><span id="L-243"><a href="#L-243"><span class="linenos">243</span></a> -</span><span id="L-244"><a href="#L-244"><span class="linenos">244</span></a> -</span><span id="L-245"><a href="#L-245"><span class="linenos">245</span></a><span class="k">def</span> <span class="nf">_merge_joins</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">):</span> -</span><span id="L-246"><a href="#L-246"><span class="linenos">246</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-247"><a href="#L-247"><span class="linenos">247</span></a><span class="sd"> Merge JOIN clauses of inner query into outer query.</span> -</span><span id="L-248"><a href="#L-248"><span class="linenos">248</span></a> -</span><span id="L-249"><a href="#L-249"><span class="linenos">249</span></a><span class="sd"> Args:</span> -</span><span id="L-250"><a href="#L-250"><span class="linenos">250</span></a><span class="sd"> outer_scope (sqlglot.optimizer.scope.Scope)</span> -</span><span id="L-251"><a href="#L-251"><span class="linenos">251</span></a><span class="sd"> inner_scope (sqlglot.optimizer.scope.Scope)</span> -</span><span id="L-252"><a href="#L-252"><span class="linenos">252</span></a><span class="sd"> from_or_join (exp.From|exp.Join)</span> -</span><span id="L-253"><a href="#L-253"><span class="linenos">253</span></a><span class="sd"> """</span> -</span><span id="L-254"><a href="#L-254"><span class="linenos">254</span></a> -</span><span id="L-255"><a href="#L-255"><span class="linenos">255</span></a> <span class="n">new_joins</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-256"><a href="#L-256"><span class="linenos">256</span></a> <span class="n">comma_joins</span> <span class="o">=</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"from"</span><span class="p">)</span><span class="o">.</span><span class="n">expressions</span><span class="p">[</span><span class="mi">1</span><span class="p">:]</span> -</span><span id="L-257"><a href="#L-257"><span class="linenos">257</span></a> <span class="k">for</span> <span class="n">subquery</span> <span class="ow">in</span> <span class="n">comma_joins</span><span class="p">:</span> -</span><span id="L-258"><a href="#L-258"><span class="linenos">258</span></a> <span class="n">new_joins</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">subquery</span><span class="p">,</span> <span class="n">kind</span><span class="o">=</span><span class="s2">"CROSS"</span><span class="p">))</span> -</span><span id="L-259"><a href="#L-259"><span class="linenos">259</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">add_source</span><span class="p">(</span><span class="n">subquery</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">,</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">subquery</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">])</span> -</span><span id="L-260"><a href="#L-260"><span class="linenos">260</span></a> -</span><span id="L-261"><a href="#L-261"><span class="linenos">261</span></a> <span class="n">joins</span> <span class="o">=</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">)</span> <span class="ow">or</span> <span class="p">[]</span> -</span><span id="L-262"><a href="#L-262"><span class="linenos">262</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">joins</span><span class="p">:</span> -</span><span id="L-263"><a href="#L-263"><span class="linenos">263</span></a> <span class="n">new_joins</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">join</span><span class="p">)</span> -</span><span id="L-264"><a href="#L-264"><span class="linenos">264</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">add_source</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">,</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">join</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">])</span> -</span><span id="L-265"><a href="#L-265"><span class="linenos">265</span></a> -</span><span id="L-266"><a href="#L-266"><span class="linenos">266</span></a> <span class="k">if</span> <span class="n">new_joins</span><span class="p">:</span> -</span><span id="L-267"><a href="#L-267"><span class="linenos">267</span></a> <span class="n">outer_joins</span> <span class="o">=</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="p">[])</span> -</span><span id="L-268"><a href="#L-268"><span class="linenos">268</span></a> -</span><span id="L-269"><a href="#L-269"><span class="linenos">269</span></a> <span class="c1"># Maintain the join order</span> -</span><span id="L-270"><a href="#L-270"><span class="linenos">270</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">from_or_join</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">From</span><span class="p">):</span> -</span><span id="L-271"><a href="#L-271"><span class="linenos">271</span></a> <span class="n">position</span> <span class="o">=</span> <span class="mi">0</span> -</span><span id="L-272"><a href="#L-272"><span class="linenos">272</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-273"><a href="#L-273"><span class="linenos">273</span></a> <span class="n">position</span> <span class="o">=</span> <span class="n">outer_joins</span><span class="o">.</span><span class="n">index</span><span class="p">(</span><span class="n">from_or_join</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span> -</span><span id="L-274"><a href="#L-274"><span class="linenos">274</span></a> <span class="n">outer_joins</span><span class="p">[</span><span class="n">position</span><span class="p">:</span><span class="n">position</span><span class="p">]</span> <span class="o">=</span> <span class="n">new_joins</span> -</span><span id="L-275"><a href="#L-275"><span class="linenos">275</span></a> -</span><span id="L-276"><a href="#L-276"><span class="linenos">276</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="n">outer_joins</span><span class="p">)</span> +</span><span id="L-244"><a href="#L-244"><span class="linenos">244</span></a><span class="k">def</span> <span class="nf">_merge_joins</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">):</span> +</span><span id="L-245"><a href="#L-245"><span class="linenos">245</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-246"><a href="#L-246"><span class="linenos">246</span></a><span class="sd"> Merge JOIN clauses of inner query into outer query.</span> +</span><span id="L-247"><a href="#L-247"><span class="linenos">247</span></a> +</span><span id="L-248"><a href="#L-248"><span class="linenos">248</span></a><span class="sd"> Args:</span> +</span><span id="L-249"><a href="#L-249"><span class="linenos">249</span></a><span class="sd"> outer_scope (sqlglot.optimizer.scope.Scope)</span> +</span><span id="L-250"><a href="#L-250"><span class="linenos">250</span></a><span class="sd"> inner_scope (sqlglot.optimizer.scope.Scope)</span> +</span><span id="L-251"><a href="#L-251"><span class="linenos">251</span></a><span class="sd"> from_or_join (exp.From|exp.Join)</span> +</span><span id="L-252"><a href="#L-252"><span class="linenos">252</span></a><span class="sd"> """</span> +</span><span id="L-253"><a href="#L-253"><span class="linenos">253</span></a> +</span><span id="L-254"><a href="#L-254"><span class="linenos">254</span></a> <span class="n">new_joins</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-255"><a href="#L-255"><span class="linenos">255</span></a> <span class="n">comma_joins</span> <span class="o">=</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"from"</span><span class="p">)</span><span class="o">.</span><span class="n">expressions</span><span class="p">[</span><span class="mi">1</span><span class="p">:]</span> +</span><span id="L-256"><a href="#L-256"><span class="linenos">256</span></a> <span class="k">for</span> <span class="n">subquery</span> <span class="ow">in</span> <span class="n">comma_joins</span><span class="p">:</span> +</span><span id="L-257"><a href="#L-257"><span class="linenos">257</span></a> <span class="n">new_joins</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">subquery</span><span class="p">,</span> <span class="n">kind</span><span class="o">=</span><span class="s2">"CROSS"</span><span class="p">))</span> +</span><span id="L-258"><a href="#L-258"><span class="linenos">258</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">add_source</span><span class="p">(</span><span class="n">subquery</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">,</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">subquery</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">])</span> +</span><span id="L-259"><a href="#L-259"><span class="linenos">259</span></a> +</span><span id="L-260"><a href="#L-260"><span class="linenos">260</span></a> <span class="n">joins</span> <span class="o">=</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">)</span> <span class="ow">or</span> <span class="p">[]</span> +</span><span id="L-261"><a href="#L-261"><span class="linenos">261</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">joins</span><span class="p">:</span> +</span><span id="L-262"><a href="#L-262"><span class="linenos">262</span></a> <span class="n">new_joins</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">join</span><span class="p">)</span> +</span><span id="L-263"><a href="#L-263"><span class="linenos">263</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">add_source</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">,</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">join</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">])</span> +</span><span id="L-264"><a href="#L-264"><span class="linenos">264</span></a> +</span><span id="L-265"><a href="#L-265"><span class="linenos">265</span></a> <span class="k">if</span> <span class="n">new_joins</span><span class="p">:</span> +</span><span id="L-266"><a href="#L-266"><span class="linenos">266</span></a> <span class="n">outer_joins</span> <span class="o">=</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="p">[])</span> +</span><span id="L-267"><a href="#L-267"><span class="linenos">267</span></a> +</span><span id="L-268"><a href="#L-268"><span class="linenos">268</span></a> <span class="c1"># Maintain the join order</span> +</span><span id="L-269"><a href="#L-269"><span class="linenos">269</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">from_or_join</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">From</span><span class="p">):</span> +</span><span id="L-270"><a href="#L-270"><span class="linenos">270</span></a> <span class="n">position</span> <span class="o">=</span> <span class="mi">0</span> +</span><span id="L-271"><a href="#L-271"><span class="linenos">271</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-272"><a href="#L-272"><span class="linenos">272</span></a> <span class="n">position</span> <span class="o">=</span> <span class="n">outer_joins</span><span class="o">.</span><span class="n">index</span><span class="p">(</span><span class="n">from_or_join</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span> +</span><span id="L-273"><a href="#L-273"><span class="linenos">273</span></a> <span class="n">outer_joins</span><span class="p">[</span><span class="n">position</span><span class="p">:</span><span class="n">position</span><span class="p">]</span> <span class="o">=</span> <span class="n">new_joins</span> +</span><span id="L-274"><a href="#L-274"><span class="linenos">274</span></a> +</span><span id="L-275"><a href="#L-275"><span class="linenos">275</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="n">outer_joins</span><span class="p">)</span> +</span><span id="L-276"><a href="#L-276"><span class="linenos">276</span></a> </span><span id="L-277"><a href="#L-277"><span class="linenos">277</span></a> -</span><span id="L-278"><a href="#L-278"><span class="linenos">278</span></a> -</span><span id="L-279"><a href="#L-279"><span class="linenos">279</span></a><span class="k">def</span> <span class="nf">_merge_expressions</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">alias</span><span class="p">):</span> -</span><span id="L-280"><a href="#L-280"><span class="linenos">280</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-281"><a href="#L-281"><span class="linenos">281</span></a><span class="sd"> Merge projections of inner query into outer query.</span> -</span><span id="L-282"><a href="#L-282"><span class="linenos">282</span></a> -</span><span id="L-283"><a href="#L-283"><span class="linenos">283</span></a><span class="sd"> Args:</span> -</span><span id="L-284"><a href="#L-284"><span class="linenos">284</span></a><span class="sd"> outer_scope (sqlglot.optimizer.scope.Scope)</span> -</span><span id="L-285"><a href="#L-285"><span class="linenos">285</span></a><span class="sd"> inner_scope (sqlglot.optimizer.scope.Scope)</span> -</span><span id="L-286"><a href="#L-286"><span class="linenos">286</span></a><span class="sd"> alias (str)</span> -</span><span id="L-287"><a href="#L-287"><span class="linenos">287</span></a><span class="sd"> """</span> -</span><span id="L-288"><a href="#L-288"><span class="linenos">288</span></a> <span class="c1"># Collect all columns that reference the alias of the inner query</span> -</span><span id="L-289"><a href="#L-289"><span class="linenos">289</span></a> <span class="n">outer_columns</span> <span class="o">=</span> <span class="n">defaultdict</span><span class="p">(</span><span class="nb">list</span><span class="p">)</span> -</span><span id="L-290"><a href="#L-290"><span class="linenos">290</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span> -</span><span id="L-291"><a href="#L-291"><span class="linenos">291</span></a> <span class="k">if</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> <span class="o">==</span> <span class="n">alias</span><span class="p">:</span> -</span><span id="L-292"><a href="#L-292"><span class="linenos">292</span></a> <span class="n">outer_columns</span><span class="p">[</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">]</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">column</span><span class="p">)</span> -</span><span id="L-293"><a href="#L-293"><span class="linenos">293</span></a> -</span><span id="L-294"><a href="#L-294"><span class="linenos">294</span></a> <span class="c1"># Replace columns with the projection expression in the inner query</span> -</span><span id="L-295"><a href="#L-295"><span class="linenos">295</span></a> <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">expressions</span><span class="p">:</span> -</span><span id="L-296"><a href="#L-296"><span class="linenos">296</span></a> <span class="n">projection_name</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">alias_or_name</span> -</span><span id="L-297"><a href="#L-297"><span class="linenos">297</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">projection_name</span><span class="p">:</span> -</span><span id="L-298"><a href="#L-298"><span class="linenos">298</span></a> <span class="k">continue</span> -</span><span id="L-299"><a href="#L-299"><span class="linenos">299</span></a> <span class="n">columns_to_replace</span> <span class="o">=</span> <span class="n">outer_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">projection_name</span><span class="p">,</span> <span class="p">[])</span> -</span><span id="L-300"><a href="#L-300"><span class="linenos">300</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns_to_replace</span><span class="p">:</span> -</span><span id="L-301"><a href="#L-301"><span class="linenos">301</span></a> <span class="n">column</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">unalias</span><span class="p">()</span><span class="o">.</span><span class="n">copy</span><span class="p">())</span> +</span><span id="L-278"><a href="#L-278"><span class="linenos">278</span></a><span class="k">def</span> <span class="nf">_merge_expressions</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">alias</span><span class="p">):</span> +</span><span id="L-279"><a href="#L-279"><span class="linenos">279</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-280"><a href="#L-280"><span class="linenos">280</span></a><span class="sd"> Merge projections of inner query into outer query.</span> +</span><span id="L-281"><a href="#L-281"><span class="linenos">281</span></a> +</span><span id="L-282"><a href="#L-282"><span class="linenos">282</span></a><span class="sd"> Args:</span> +</span><span id="L-283"><a href="#L-283"><span class="linenos">283</span></a><span class="sd"> outer_scope (sqlglot.optimizer.scope.Scope)</span> +</span><span id="L-284"><a href="#L-284"><span class="linenos">284</span></a><span class="sd"> inner_scope (sqlglot.optimizer.scope.Scope)</span> +</span><span id="L-285"><a href="#L-285"><span class="linenos">285</span></a><span class="sd"> alias (str)</span> +</span><span id="L-286"><a href="#L-286"><span class="linenos">286</span></a><span class="sd"> """</span> +</span><span id="L-287"><a href="#L-287"><span class="linenos">287</span></a> <span class="c1"># Collect all columns that reference the alias of the inner query</span> +</span><span id="L-288"><a href="#L-288"><span class="linenos">288</span></a> <span class="n">outer_columns</span> <span class="o">=</span> <span class="n">defaultdict</span><span class="p">(</span><span class="nb">list</span><span class="p">)</span> +</span><span id="L-289"><a href="#L-289"><span class="linenos">289</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span> +</span><span id="L-290"><a href="#L-290"><span class="linenos">290</span></a> <span class="k">if</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> <span class="o">==</span> <span class="n">alias</span><span class="p">:</span> +</span><span id="L-291"><a href="#L-291"><span class="linenos">291</span></a> <span class="n">outer_columns</span><span class="p">[</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">]</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">column</span><span class="p">)</span> +</span><span id="L-292"><a href="#L-292"><span class="linenos">292</span></a> +</span><span id="L-293"><a href="#L-293"><span class="linenos">293</span></a> <span class="c1"># Replace columns with the projection expression in the inner query</span> +</span><span id="L-294"><a href="#L-294"><span class="linenos">294</span></a> <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">expressions</span><span class="p">:</span> +</span><span id="L-295"><a href="#L-295"><span class="linenos">295</span></a> <span class="n">projection_name</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">alias_or_name</span> +</span><span id="L-296"><a href="#L-296"><span class="linenos">296</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">projection_name</span><span class="p">:</span> +</span><span id="L-297"><a href="#L-297"><span class="linenos">297</span></a> <span class="k">continue</span> +</span><span id="L-298"><a href="#L-298"><span class="linenos">298</span></a> <span class="n">columns_to_replace</span> <span class="o">=</span> <span class="n">outer_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">projection_name</span><span class="p">,</span> <span class="p">[])</span> +</span><span id="L-299"><a href="#L-299"><span class="linenos">299</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns_to_replace</span><span class="p">:</span> +</span><span id="L-300"><a href="#L-300"><span class="linenos">300</span></a> <span class="n">column</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">unalias</span><span class="p">()</span><span class="o">.</span><span class="n">copy</span><span class="p">())</span> +</span><span id="L-301"><a href="#L-301"><span class="linenos">301</span></a> </span><span id="L-302"><a href="#L-302"><span class="linenos">302</span></a> -</span><span id="L-303"><a href="#L-303"><span class="linenos">303</span></a> -</span><span id="L-304"><a href="#L-304"><span class="linenos">304</span></a><span class="k">def</span> <span class="nf">_merge_where</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">):</span> -</span><span id="L-305"><a href="#L-305"><span class="linenos">305</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-306"><a href="#L-306"><span class="linenos">306</span></a><span class="sd"> Merge WHERE clause of inner query into outer query.</span> -</span><span id="L-307"><a href="#L-307"><span class="linenos">307</span></a> -</span><span id="L-308"><a href="#L-308"><span class="linenos">308</span></a><span class="sd"> Args:</span> -</span><span id="L-309"><a href="#L-309"><span class="linenos">309</span></a><span class="sd"> outer_scope (sqlglot.optimizer.scope.Scope)</span> -</span><span id="L-310"><a href="#L-310"><span class="linenos">310</span></a><span class="sd"> inner_scope (sqlglot.optimizer.scope.Scope)</span> -</span><span id="L-311"><a href="#L-311"><span class="linenos">311</span></a><span class="sd"> from_or_join (exp.From|exp.Join)</span> -</span><span id="L-312"><a href="#L-312"><span class="linenos">312</span></a><span class="sd"> """</span> -</span><span id="L-313"><a href="#L-313"><span class="linenos">313</span></a> <span class="n">where</span> <span class="o">=</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"where"</span><span class="p">)</span> -</span><span id="L-314"><a href="#L-314"><span class="linenos">314</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">where</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">where</span><span class="o">.</span><span class="n">this</span><span class="p">:</span> -</span><span id="L-315"><a href="#L-315"><span class="linenos">315</span></a> <span class="k">return</span> -</span><span id="L-316"><a href="#L-316"><span class="linenos">316</span></a> -</span><span id="L-317"><a href="#L-317"><span class="linenos">317</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">expression</span> -</span><span id="L-318"><a href="#L-318"><span class="linenos">318</span></a> -</span><span id="L-319"><a href="#L-319"><span class="linenos">319</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">from_or_join</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">):</span> -</span><span id="L-320"><a href="#L-320"><span class="linenos">320</span></a> <span class="c1"># Merge predicates from an outer join to the ON clause</span> -</span><span id="L-321"><a href="#L-321"><span class="linenos">321</span></a> <span class="c1"># if it only has columns that are already joined</span> -</span><span id="L-322"><a href="#L-322"><span class="linenos">322</span></a> <span class="n">from_</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"from"</span><span class="p">)</span> -</span><span id="L-323"><a href="#L-323"><span class="linenos">323</span></a> <span class="n">sources</span> <span class="o">=</span> <span class="p">{</span><span class="n">table</span><span class="o">.</span><span class="n">alias_or_name</span> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">from_</span><span class="o">.</span><span class="n">expressions</span><span class="p">}</span> <span class="k">if</span> <span class="n">from_</span> <span class="k">else</span> <span class="p">{}</span> -</span><span id="L-324"><a href="#L-324"><span class="linenos">324</span></a> -</span><span id="L-325"><a href="#L-325"><span class="linenos">325</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"joins"</span><span class="p">]:</span> -</span><span id="L-326"><a href="#L-326"><span class="linenos">326</span></a> <span class="n">source</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">alias_or_name</span> -</span><span id="L-327"><a href="#L-327"><span class="linenos">327</span></a> <span class="n">sources</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">source</span><span class="p">)</span> -</span><span id="L-328"><a href="#L-328"><span class="linenos">328</span></a> <span class="k">if</span> <span class="n">source</span> <span class="o">==</span> <span class="n">from_or_join</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">:</span> -</span><span id="L-329"><a href="#L-329"><span class="linenos">329</span></a> <span class="k">break</span> -</span><span id="L-330"><a href="#L-330"><span class="linenos">330</span></a> -</span><span id="L-331"><a href="#L-331"><span class="linenos">331</span></a> <span class="k">if</span> <span class="nb">set</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">column_table_names</span><span class="p">(</span><span class="n">where</span><span class="o">.</span><span class="n">this</span><span class="p">))</span> <span class="o"><=</span> <span class="n">sources</span><span class="p">:</span> -</span><span id="L-332"><a href="#L-332"><span class="linenos">332</span></a> <span class="n">from_or_join</span><span class="o">.</span><span class="n">on</span><span class="p">(</span><span class="n">where</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> -</span><span id="L-333"><a href="#L-333"><span class="linenos">333</span></a> <span class="n">from_or_join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"on"</span><span class="p">,</span> <span class="n">simplify</span><span class="p">(</span><span class="n">from_or_join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on"</span><span class="p">)))</span> -</span><span id="L-334"><a href="#L-334"><span class="linenos">334</span></a> <span class="k">return</span> -</span><span id="L-335"><a href="#L-335"><span class="linenos">335</span></a> -</span><span id="L-336"><a href="#L-336"><span class="linenos">336</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">where</span><span class="p">(</span><span class="n">where</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> -</span><span id="L-337"><a href="#L-337"><span class="linenos">337</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"where"</span><span class="p">,</span> <span class="n">simplify</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"where"</span><span class="p">)))</span> +</span><span id="L-303"><a href="#L-303"><span class="linenos">303</span></a><span class="k">def</span> <span class="nf">_merge_where</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">):</span> +</span><span id="L-304"><a href="#L-304"><span class="linenos">304</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-305"><a href="#L-305"><span class="linenos">305</span></a><span class="sd"> Merge WHERE clause of inner query into outer query.</span> +</span><span id="L-306"><a href="#L-306"><span class="linenos">306</span></a> +</span><span id="L-307"><a href="#L-307"><span class="linenos">307</span></a><span class="sd"> Args:</span> +</span><span id="L-308"><a href="#L-308"><span class="linenos">308</span></a><span class="sd"> outer_scope (sqlglot.optimizer.scope.Scope)</span> +</span><span id="L-309"><a href="#L-309"><span class="linenos">309</span></a><span class="sd"> inner_scope (sqlglot.optimizer.scope.Scope)</span> +</span><span id="L-310"><a href="#L-310"><span class="linenos">310</span></a><span class="sd"> from_or_join (exp.From|exp.Join)</span> +</span><span id="L-311"><a href="#L-311"><span class="linenos">311</span></a><span class="sd"> """</span> +</span><span id="L-312"><a href="#L-312"><span class="linenos">312</span></a> <span class="n">where</span> <span class="o">=</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"where"</span><span class="p">)</span> +</span><span id="L-313"><a href="#L-313"><span class="linenos">313</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">where</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">where</span><span class="o">.</span><span class="n">this</span><span class="p">:</span> +</span><span id="L-314"><a href="#L-314"><span class="linenos">314</span></a> <span class="k">return</span> +</span><span id="L-315"><a href="#L-315"><span class="linenos">315</span></a> +</span><span id="L-316"><a href="#L-316"><span class="linenos">316</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">expression</span> +</span><span id="L-317"><a href="#L-317"><span class="linenos">317</span></a> +</span><span id="L-318"><a href="#L-318"><span class="linenos">318</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">from_or_join</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">):</span> +</span><span id="L-319"><a href="#L-319"><span class="linenos">319</span></a> <span class="c1"># Merge predicates from an outer join to the ON clause</span> +</span><span id="L-320"><a href="#L-320"><span class="linenos">320</span></a> <span class="c1"># if it only has columns that are already joined</span> +</span><span id="L-321"><a href="#L-321"><span class="linenos">321</span></a> <span class="n">from_</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"from"</span><span class="p">)</span> +</span><span id="L-322"><a href="#L-322"><span class="linenos">322</span></a> <span class="n">sources</span> <span class="o">=</span> <span class="p">{</span><span class="n">table</span><span class="o">.</span><span class="n">alias_or_name</span> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">from_</span><span class="o">.</span><span class="n">expressions</span><span class="p">}</span> <span class="k">if</span> <span class="n">from_</span> <span class="k">else</span> <span class="p">{}</span> +</span><span id="L-323"><a href="#L-323"><span class="linenos">323</span></a> +</span><span id="L-324"><a href="#L-324"><span class="linenos">324</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"joins"</span><span class="p">]:</span> +</span><span id="L-325"><a href="#L-325"><span class="linenos">325</span></a> <span class="n">source</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">alias_or_name</span> +</span><span id="L-326"><a href="#L-326"><span class="linenos">326</span></a> <span class="n">sources</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">source</span><span class="p">)</span> +</span><span id="L-327"><a href="#L-327"><span class="linenos">327</span></a> <span class="k">if</span> <span class="n">source</span> <span class="o">==</span> <span class="n">from_or_join</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">:</span> +</span><span id="L-328"><a href="#L-328"><span class="linenos">328</span></a> <span class="k">break</span> +</span><span id="L-329"><a href="#L-329"><span class="linenos">329</span></a> +</span><span id="L-330"><a href="#L-330"><span class="linenos">330</span></a> <span class="k">if</span> <span class="nb">set</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">column_table_names</span><span class="p">(</span><span class="n">where</span><span class="o">.</span><span class="n">this</span><span class="p">))</span> <span class="o"><=</span> <span class="n">sources</span><span class="p">:</span> +</span><span id="L-331"><a href="#L-331"><span class="linenos">331</span></a> <span class="n">from_or_join</span><span class="o">.</span><span class="n">on</span><span class="p">(</span><span class="n">where</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> +</span><span id="L-332"><a href="#L-332"><span class="linenos">332</span></a> <span class="n">from_or_join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"on"</span><span class="p">,</span> <span class="n">from_or_join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on"</span><span class="p">))</span> +</span><span id="L-333"><a href="#L-333"><span class="linenos">333</span></a> <span class="k">return</span> +</span><span id="L-334"><a href="#L-334"><span class="linenos">334</span></a> +</span><span id="L-335"><a href="#L-335"><span class="linenos">335</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">where</span><span class="p">(</span><span class="n">where</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> +</span><span id="L-336"><a href="#L-336"><span class="linenos">336</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"where"</span><span class="p">,</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"where"</span><span class="p">))</span> +</span><span id="L-337"><a href="#L-337"><span class="linenos">337</span></a> </span><span id="L-338"><a href="#L-338"><span class="linenos">338</span></a> -</span><span id="L-339"><a href="#L-339"><span class="linenos">339</span></a> -</span><span id="L-340"><a href="#L-340"><span class="linenos">340</span></a><span class="k">def</span> <span class="nf">_merge_order</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">):</span> -</span><span id="L-341"><a href="#L-341"><span class="linenos">341</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-342"><a href="#L-342"><span class="linenos">342</span></a><span class="sd"> Merge ORDER clause of inner query into outer query.</span> -</span><span id="L-343"><a href="#L-343"><span class="linenos">343</span></a> -</span><span id="L-344"><a href="#L-344"><span class="linenos">344</span></a><span class="sd"> Args:</span> -</span><span id="L-345"><a href="#L-345"><span class="linenos">345</span></a><span class="sd"> outer_scope (sqlglot.optimizer.scope.Scope)</span> -</span><span id="L-346"><a href="#L-346"><span class="linenos">346</span></a><span class="sd"> inner_scope (sqlglot.optimizer.scope.Scope)</span> -</span><span id="L-347"><a href="#L-347"><span class="linenos">347</span></a><span class="sd"> """</span> -</span><span id="L-348"><a href="#L-348"><span class="linenos">348</span></a> <span class="k">if</span> <span class="p">(</span> -</span><span id="L-349"><a href="#L-349"><span class="linenos">349</span></a> <span class="nb">any</span><span class="p">(</span> -</span><span id="L-350"><a href="#L-350"><span class="linenos">350</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">arg</span><span class="p">)</span> <span class="k">for</span> <span class="n">arg</span> <span class="ow">in</span> <span class="p">[</span><span class="s2">"group"</span><span class="p">,</span> <span class="s2">"distinct"</span><span class="p">,</span> <span class="s2">"having"</span><span class="p">,</span> <span class="s2">"order"</span><span class="p">]</span> -</span><span id="L-351"><a href="#L-351"><span class="linenos">351</span></a> <span class="p">)</span> -</span><span id="L-352"><a href="#L-352"><span class="linenos">352</span></a> <span class="ow">or</span> <span class="nb">len</span><span class="p">(</span><span class="n">outer_scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">)</span> <span class="o">!=</span> <span class="mi">1</span> -</span><span id="L-353"><a href="#L-353"><span class="linenos">353</span></a> <span class="ow">or</span> <span class="nb">any</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">find</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">AggFunc</span><span class="p">)</span> <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">expressions</span><span class="p">)</span> -</span><span id="L-354"><a href="#L-354"><span class="linenos">354</span></a> <span class="p">):</span> -</span><span id="L-355"><a href="#L-355"><span class="linenos">355</span></a> <span class="k">return</span> -</span><span id="L-356"><a href="#L-356"><span class="linenos">356</span></a> -</span><span id="L-357"><a href="#L-357"><span class="linenos">357</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"order"</span><span class="p">,</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"order"</span><span class="p">))</span> +</span><span id="L-339"><a href="#L-339"><span class="linenos">339</span></a><span class="k">def</span> <span class="nf">_merge_order</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">):</span> +</span><span id="L-340"><a href="#L-340"><span class="linenos">340</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-341"><a href="#L-341"><span class="linenos">341</span></a><span class="sd"> Merge ORDER clause of inner query into outer query.</span> +</span><span id="L-342"><a href="#L-342"><span class="linenos">342</span></a> +</span><span id="L-343"><a href="#L-343"><span class="linenos">343</span></a><span class="sd"> Args:</span> +</span><span id="L-344"><a href="#L-344"><span class="linenos">344</span></a><span class="sd"> outer_scope (sqlglot.optimizer.scope.Scope)</span> +</span><span id="L-345"><a href="#L-345"><span class="linenos">345</span></a><span class="sd"> inner_scope (sqlglot.optimizer.scope.Scope)</span> +</span><span id="L-346"><a href="#L-346"><span class="linenos">346</span></a><span class="sd"> """</span> +</span><span id="L-347"><a href="#L-347"><span class="linenos">347</span></a> <span class="k">if</span> <span class="p">(</span> +</span><span id="L-348"><a href="#L-348"><span class="linenos">348</span></a> <span class="nb">any</span><span class="p">(</span> +</span><span id="L-349"><a href="#L-349"><span class="linenos">349</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">arg</span><span class="p">)</span> <span class="k">for</span> <span class="n">arg</span> <span class="ow">in</span> <span class="p">[</span><span class="s2">"group"</span><span class="p">,</span> <span class="s2">"distinct"</span><span class="p">,</span> <span class="s2">"having"</span><span class="p">,</span> <span class="s2">"order"</span><span class="p">]</span> +</span><span id="L-350"><a href="#L-350"><span class="linenos">350</span></a> <span class="p">)</span> +</span><span id="L-351"><a href="#L-351"><span class="linenos">351</span></a> <span class="ow">or</span> <span class="nb">len</span><span class="p">(</span><span class="n">outer_scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">)</span> <span class="o">!=</span> <span class="mi">1</span> +</span><span id="L-352"><a href="#L-352"><span class="linenos">352</span></a> <span class="ow">or</span> <span class="nb">any</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">find</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">AggFunc</span><span class="p">)</span> <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">expressions</span><span class="p">)</span> +</span><span id="L-353"><a href="#L-353"><span class="linenos">353</span></a> <span class="p">):</span> +</span><span id="L-354"><a href="#L-354"><span class="linenos">354</span></a> <span class="k">return</span> +</span><span id="L-355"><a href="#L-355"><span class="linenos">355</span></a> +</span><span id="L-356"><a href="#L-356"><span class="linenos">356</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"order"</span><span class="p">,</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"order"</span><span class="p">))</span> +</span><span id="L-357"><a href="#L-357"><span class="linenos">357</span></a> </span><span id="L-358"><a href="#L-358"><span class="linenos">358</span></a> -</span><span id="L-359"><a href="#L-359"><span class="linenos">359</span></a> -</span><span id="L-360"><a href="#L-360"><span class="linenos">360</span></a><span class="k">def</span> <span class="nf">_merge_hints</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">):</span> -</span><span id="L-361"><a href="#L-361"><span class="linenos">361</span></a> <span class="n">inner_scope_hint</span> <span class="o">=</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"hint"</span><span class="p">)</span> -</span><span id="L-362"><a href="#L-362"><span class="linenos">362</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">inner_scope_hint</span><span class="p">:</span> -</span><span id="L-363"><a href="#L-363"><span class="linenos">363</span></a> <span class="k">return</span> -</span><span id="L-364"><a href="#L-364"><span class="linenos">364</span></a> <span class="n">outer_scope_hint</span> <span class="o">=</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"hint"</span><span class="p">)</span> -</span><span id="L-365"><a href="#L-365"><span class="linenos">365</span></a> <span class="k">if</span> <span class="n">outer_scope_hint</span><span class="p">:</span> -</span><span id="L-366"><a href="#L-366"><span class="linenos">366</span></a> <span class="k">for</span> <span class="n">hint_expression</span> <span class="ow">in</span> <span class="n">inner_scope_hint</span><span class="o">.</span><span class="n">expressions</span><span class="p">:</span> -</span><span id="L-367"><a href="#L-367"><span class="linenos">367</span></a> <span class="n">outer_scope_hint</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="n">hint_expression</span><span class="p">)</span> -</span><span id="L-368"><a href="#L-368"><span class="linenos">368</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-369"><a href="#L-369"><span class="linenos">369</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"hint"</span><span class="p">,</span> <span class="n">inner_scope_hint</span><span class="p">)</span> +</span><span id="L-359"><a href="#L-359"><span class="linenos">359</span></a><span class="k">def</span> <span class="nf">_merge_hints</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">):</span> +</span><span id="L-360"><a href="#L-360"><span class="linenos">360</span></a> <span class="n">inner_scope_hint</span> <span class="o">=</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"hint"</span><span class="p">)</span> +</span><span id="L-361"><a href="#L-361"><span class="linenos">361</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">inner_scope_hint</span><span class="p">:</span> +</span><span id="L-362"><a href="#L-362"><span class="linenos">362</span></a> <span class="k">return</span> +</span><span id="L-363"><a href="#L-363"><span class="linenos">363</span></a> <span class="n">outer_scope_hint</span> <span class="o">=</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"hint"</span><span class="p">)</span> +</span><span id="L-364"><a href="#L-364"><span class="linenos">364</span></a> <span class="k">if</span> <span class="n">outer_scope_hint</span><span class="p">:</span> +</span><span id="L-365"><a href="#L-365"><span class="linenos">365</span></a> <span class="k">for</span> <span class="n">hint_expression</span> <span class="ow">in</span> <span class="n">inner_scope_hint</span><span class="o">.</span><span class="n">expressions</span><span class="p">:</span> +</span><span id="L-366"><a href="#L-366"><span class="linenos">366</span></a> <span class="n">outer_scope_hint</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="n">hint_expression</span><span class="p">)</span> +</span><span id="L-367"><a href="#L-367"><span class="linenos">367</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-368"><a href="#L-368"><span class="linenos">368</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"hint"</span><span class="p">,</span> <span class="n">inner_scope_hint</span><span class="p">)</span> +</span><span id="L-369"><a href="#L-369"><span class="linenos">369</span></a> </span><span id="L-370"><a href="#L-370"><span class="linenos">370</span></a> -</span><span id="L-371"><a href="#L-371"><span class="linenos">371</span></a> -</span><span id="L-372"><a href="#L-372"><span class="linenos">372</span></a><span class="k">def</span> <span class="nf">_pop_cte</span><span class="p">(</span><span class="n">inner_scope</span><span class="p">):</span> -</span><span id="L-373"><a href="#L-373"><span class="linenos">373</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-374"><a href="#L-374"><span class="linenos">374</span></a><span class="sd"> Remove CTE from the AST.</span> -</span><span id="L-375"><a href="#L-375"><span class="linenos">375</span></a> -</span><span id="L-376"><a href="#L-376"><span class="linenos">376</span></a><span class="sd"> Args:</span> -</span><span id="L-377"><a href="#L-377"><span class="linenos">377</span></a><span class="sd"> inner_scope (sqlglot.optimizer.scope.Scope)</span> -</span><span id="L-378"><a href="#L-378"><span class="linenos">378</span></a><span class="sd"> """</span> -</span><span id="L-379"><a href="#L-379"><span class="linenos">379</span></a> <span class="n">cte</span> <span class="o">=</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span> -</span><span id="L-380"><a href="#L-380"><span class="linenos">380</span></a> <span class="n">with_</span> <span class="o">=</span> <span class="n">cte</span><span class="o">.</span><span class="n">parent</span> -</span><span id="L-381"><a href="#L-381"><span class="linenos">381</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">with_</span><span class="o">.</span><span class="n">expressions</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> -</span><span id="L-382"><a href="#L-382"><span class="linenos">382</span></a> <span class="n">with_</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span> -</span><span id="L-383"><a href="#L-383"><span class="linenos">383</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-384"><a href="#L-384"><span class="linenos">384</span></a> <span class="n">cte</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span> +</span><span id="L-371"><a href="#L-371"><span class="linenos">371</span></a><span class="k">def</span> <span class="nf">_pop_cte</span><span class="p">(</span><span class="n">inner_scope</span><span class="p">):</span> +</span><span id="L-372"><a href="#L-372"><span class="linenos">372</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-373"><a href="#L-373"><span class="linenos">373</span></a><span class="sd"> Remove CTE from the AST.</span> +</span><span id="L-374"><a href="#L-374"><span class="linenos">374</span></a> +</span><span id="L-375"><a href="#L-375"><span class="linenos">375</span></a><span class="sd"> Args:</span> +</span><span id="L-376"><a href="#L-376"><span class="linenos">376</span></a><span class="sd"> inner_scope (sqlglot.optimizer.scope.Scope)</span> +</span><span id="L-377"><a href="#L-377"><span class="linenos">377</span></a><span class="sd"> """</span> +</span><span id="L-378"><a href="#L-378"><span class="linenos">378</span></a> <span class="n">cte</span> <span class="o">=</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span> +</span><span id="L-379"><a href="#L-379"><span class="linenos">379</span></a> <span class="n">with_</span> <span class="o">=</span> <span class="n">cte</span><span class="o">.</span><span class="n">parent</span> +</span><span id="L-380"><a href="#L-380"><span class="linenos">380</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">with_</span><span class="o">.</span><span class="n">expressions</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> +</span><span id="L-381"><a href="#L-381"><span class="linenos">381</span></a> <span class="n">with_</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span> +</span><span id="L-382"><a href="#L-382"><span class="linenos">382</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-383"><a href="#L-383"><span class="linenos">383</span></a> <span class="n">cte</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span> </span></pre></div> @@ -461,35 +460,35 @@ </div> <a class="headerlink" href="#merge_subqueries"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="merge_subqueries-10"><a href="#merge_subqueries-10"><span class="linenos">10</span></a><span class="k">def</span> <span class="nf">merge_subqueries</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> -</span><span id="merge_subqueries-11"><a href="#merge_subqueries-11"><span class="linenos">11</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="merge_subqueries-12"><a href="#merge_subqueries-12"><span class="linenos">12</span></a><span class="sd"> Rewrite sqlglot AST to merge derived tables into the outer query.</span> -</span><span id="merge_subqueries-13"><a href="#merge_subqueries-13"><span class="linenos">13</span></a> -</span><span id="merge_subqueries-14"><a href="#merge_subqueries-14"><span class="linenos">14</span></a><span class="sd"> This also merges CTEs if they are selected from only once.</span> -</span><span id="merge_subqueries-15"><a href="#merge_subqueries-15"><span class="linenos">15</span></a> -</span><span id="merge_subqueries-16"><a href="#merge_subqueries-16"><span class="linenos">16</span></a><span class="sd"> Example:</span> -</span><span id="merge_subqueries-17"><a href="#merge_subqueries-17"><span class="linenos">17</span></a><span class="sd"> >>> import sqlglot</span> -</span><span id="merge_subqueries-18"><a href="#merge_subqueries-18"><span class="linenos">18</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT a FROM (SELECT x.a FROM x) JOIN y")</span> -</span><span id="merge_subqueries-19"><a href="#merge_subqueries-19"><span class="linenos">19</span></a><span class="sd"> >>> merge_subqueries(expression).sql()</span> -</span><span id="merge_subqueries-20"><a href="#merge_subqueries-20"><span class="linenos">20</span></a><span class="sd"> 'SELECT x.a FROM x JOIN y'</span> -</span><span id="merge_subqueries-21"><a href="#merge_subqueries-21"><span class="linenos">21</span></a> -</span><span id="merge_subqueries-22"><a href="#merge_subqueries-22"><span class="linenos">22</span></a><span class="sd"> If `leave_tables_isolated` is True, this will not merge inner queries into outer</span> -</span><span id="merge_subqueries-23"><a href="#merge_subqueries-23"><span class="linenos">23</span></a><span class="sd"> queries if it would result in multiple table selects in a single query:</span> -</span><span id="merge_subqueries-24"><a href="#merge_subqueries-24"><span class="linenos">24</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT a FROM (SELECT x.a FROM x) JOIN y")</span> -</span><span id="merge_subqueries-25"><a href="#merge_subqueries-25"><span class="linenos">25</span></a><span class="sd"> >>> merge_subqueries(expression, leave_tables_isolated=True).sql()</span> -</span><span id="merge_subqueries-26"><a href="#merge_subqueries-26"><span class="linenos">26</span></a><span class="sd"> 'SELECT a FROM (SELECT x.a FROM x) JOIN y'</span> -</span><span id="merge_subqueries-27"><a href="#merge_subqueries-27"><span class="linenos">27</span></a> -</span><span id="merge_subqueries-28"><a href="#merge_subqueries-28"><span class="linenos">28</span></a><span class="sd"> Inspired by https://dev.mysql.com/doc/refman/8.0/en/derived-table-optimization.html</span> -</span><span id="merge_subqueries-29"><a href="#merge_subqueries-29"><span class="linenos">29</span></a> -</span><span id="merge_subqueries-30"><a href="#merge_subqueries-30"><span class="linenos">30</span></a><span class="sd"> Args:</span> -</span><span id="merge_subqueries-31"><a href="#merge_subqueries-31"><span class="linenos">31</span></a><span class="sd"> expression (sqlglot.Expression): expression to optimize</span> -</span><span id="merge_subqueries-32"><a href="#merge_subqueries-32"><span class="linenos">32</span></a><span class="sd"> leave_tables_isolated (bool):</span> -</span><span id="merge_subqueries-33"><a href="#merge_subqueries-33"><span class="linenos">33</span></a><span class="sd"> Returns:</span> -</span><span id="merge_subqueries-34"><a href="#merge_subqueries-34"><span class="linenos">34</span></a><span class="sd"> sqlglot.Expression: optimized expression</span> -</span><span id="merge_subqueries-35"><a href="#merge_subqueries-35"><span class="linenos">35</span></a><span class="sd"> """</span> -</span><span id="merge_subqueries-36"><a href="#merge_subqueries-36"><span class="linenos">36</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">merge_ctes</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="p">)</span> -</span><span id="merge_subqueries-37"><a href="#merge_subqueries-37"><span class="linenos">37</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">merge_derived_tables</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="p">)</span> -</span><span id="merge_subqueries-38"><a href="#merge_subqueries-38"><span class="linenos">38</span></a> <span class="k">return</span> <span class="n">expression</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="merge_subqueries-9"><a href="#merge_subqueries-9"><span class="linenos"> 9</span></a><span class="k">def</span> <span class="nf">merge_subqueries</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> +</span><span id="merge_subqueries-10"><a href="#merge_subqueries-10"><span class="linenos">10</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="merge_subqueries-11"><a href="#merge_subqueries-11"><span class="linenos">11</span></a><span class="sd"> Rewrite sqlglot AST to merge derived tables into the outer query.</span> +</span><span id="merge_subqueries-12"><a href="#merge_subqueries-12"><span class="linenos">12</span></a> +</span><span id="merge_subqueries-13"><a href="#merge_subqueries-13"><span class="linenos">13</span></a><span class="sd"> This also merges CTEs if they are selected from only once.</span> +</span><span id="merge_subqueries-14"><a href="#merge_subqueries-14"><span class="linenos">14</span></a> +</span><span id="merge_subqueries-15"><a href="#merge_subqueries-15"><span class="linenos">15</span></a><span class="sd"> Example:</span> +</span><span id="merge_subqueries-16"><a href="#merge_subqueries-16"><span class="linenos">16</span></a><span class="sd"> >>> import sqlglot</span> +</span><span id="merge_subqueries-17"><a href="#merge_subqueries-17"><span class="linenos">17</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT a FROM (SELECT x.a FROM x) JOIN y")</span> +</span><span id="merge_subqueries-18"><a href="#merge_subqueries-18"><span class="linenos">18</span></a><span class="sd"> >>> merge_subqueries(expression).sql()</span> +</span><span id="merge_subqueries-19"><a href="#merge_subqueries-19"><span class="linenos">19</span></a><span class="sd"> 'SELECT x.a FROM x JOIN y'</span> +</span><span id="merge_subqueries-20"><a href="#merge_subqueries-20"><span class="linenos">20</span></a> +</span><span id="merge_subqueries-21"><a href="#merge_subqueries-21"><span class="linenos">21</span></a><span class="sd"> If `leave_tables_isolated` is True, this will not merge inner queries into outer</span> +</span><span id="merge_subqueries-22"><a href="#merge_subqueries-22"><span class="linenos">22</span></a><span class="sd"> queries if it would result in multiple table selects in a single query:</span> +</span><span id="merge_subqueries-23"><a href="#merge_subqueries-23"><span class="linenos">23</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT a FROM (SELECT x.a FROM x) JOIN y")</span> +</span><span id="merge_subqueries-24"><a href="#merge_subqueries-24"><span class="linenos">24</span></a><span class="sd"> >>> merge_subqueries(expression, leave_tables_isolated=True).sql()</span> +</span><span id="merge_subqueries-25"><a href="#merge_subqueries-25"><span class="linenos">25</span></a><span class="sd"> 'SELECT a FROM (SELECT x.a FROM x) JOIN y'</span> +</span><span id="merge_subqueries-26"><a href="#merge_subqueries-26"><span class="linenos">26</span></a> +</span><span id="merge_subqueries-27"><a href="#merge_subqueries-27"><span class="linenos">27</span></a><span class="sd"> Inspired by https://dev.mysql.com/doc/refman/8.0/en/derived-table-optimization.html</span> +</span><span id="merge_subqueries-28"><a href="#merge_subqueries-28"><span class="linenos">28</span></a> +</span><span id="merge_subqueries-29"><a href="#merge_subqueries-29"><span class="linenos">29</span></a><span class="sd"> Args:</span> +</span><span id="merge_subqueries-30"><a href="#merge_subqueries-30"><span class="linenos">30</span></a><span class="sd"> expression (sqlglot.Expression): expression to optimize</span> +</span><span id="merge_subqueries-31"><a href="#merge_subqueries-31"><span class="linenos">31</span></a><span class="sd"> leave_tables_isolated (bool):</span> +</span><span id="merge_subqueries-32"><a href="#merge_subqueries-32"><span class="linenos">32</span></a><span class="sd"> Returns:</span> +</span><span id="merge_subqueries-33"><a href="#merge_subqueries-33"><span class="linenos">33</span></a><span class="sd"> sqlglot.Expression: optimized expression</span> +</span><span id="merge_subqueries-34"><a href="#merge_subqueries-34"><span class="linenos">34</span></a><span class="sd"> """</span> +</span><span id="merge_subqueries-35"><a href="#merge_subqueries-35"><span class="linenos">35</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">merge_ctes</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="p">)</span> +</span><span id="merge_subqueries-36"><a href="#merge_subqueries-36"><span class="linenos">36</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">merge_derived_tables</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="p">)</span> +</span><span id="merge_subqueries-37"><a href="#merge_subqueries-37"><span class="linenos">37</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -551,38 +550,38 @@ queries if it would result in multiple table selects in a single query:</p> </div> <a class="headerlink" href="#merge_ctes"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="merge_ctes-52"><a href="#merge_ctes-52"><span class="linenos">52</span></a><span class="k">def</span> <span class="nf">merge_ctes</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> -</span><span id="merge_ctes-53"><a href="#merge_ctes-53"><span class="linenos">53</span></a> <span class="n">scopes</span> <span class="o">=</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="merge_ctes-54"><a href="#merge_ctes-54"><span class="linenos">54</span></a> -</span><span id="merge_ctes-55"><a href="#merge_ctes-55"><span class="linenos">55</span></a> <span class="c1"># All places where we select from CTEs.</span> -</span><span id="merge_ctes-56"><a href="#merge_ctes-56"><span class="linenos">56</span></a> <span class="c1"># We key on the CTE scope so we can detect CTES that are selected from multiple times.</span> -</span><span id="merge_ctes-57"><a href="#merge_ctes-57"><span class="linenos">57</span></a> <span class="n">cte_selections</span> <span class="o">=</span> <span class="n">defaultdict</span><span class="p">(</span><span class="nb">list</span><span class="p">)</span> -</span><span id="merge_ctes-58"><a href="#merge_ctes-58"><span class="linenos">58</span></a> <span class="k">for</span> <span class="n">outer_scope</span> <span class="ow">in</span> <span class="n">scopes</span><span class="p">:</span> -</span><span id="merge_ctes-59"><a href="#merge_ctes-59"><span class="linenos">59</span></a> <span class="k">for</span> <span class="n">table</span><span class="p">,</span> <span class="n">inner_scope</span> <span class="ow">in</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> -</span><span id="merge_ctes-60"><a href="#merge_ctes-60"><span class="linenos">60</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">inner_scope</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">is_cte</span><span class="p">:</span> -</span><span id="merge_ctes-61"><a href="#merge_ctes-61"><span class="linenos">61</span></a> <span class="n">cte_selections</span><span class="p">[</span><span class="nb">id</span><span class="p">(</span><span class="n">inner_scope</span><span class="p">)]</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> -</span><span id="merge_ctes-62"><a href="#merge_ctes-62"><span class="linenos">62</span></a> <span class="p">(</span> -</span><span id="merge_ctes-63"><a href="#merge_ctes-63"><span class="linenos">63</span></a> <span class="n">outer_scope</span><span class="p">,</span> -</span><span id="merge_ctes-64"><a href="#merge_ctes-64"><span class="linenos">64</span></a> <span class="n">inner_scope</span><span class="p">,</span> -</span><span id="merge_ctes-65"><a href="#merge_ctes-65"><span class="linenos">65</span></a> <span class="n">table</span><span class="p">,</span> -</span><span id="merge_ctes-66"><a href="#merge_ctes-66"><span class="linenos">66</span></a> <span class="p">)</span> -</span><span id="merge_ctes-67"><a href="#merge_ctes-67"><span class="linenos">67</span></a> <span class="p">)</span> -</span><span id="merge_ctes-68"><a href="#merge_ctes-68"><span class="linenos">68</span></a> -</span><span id="merge_ctes-69"><a href="#merge_ctes-69"><span class="linenos">69</span></a> <span class="n">singular_cte_selections</span> <span class="o">=</span> <span class="p">[</span><span class="n">v</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">cte_selections</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">v</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">]</span> -</span><span id="merge_ctes-70"><a href="#merge_ctes-70"><span class="linenos">70</span></a> <span class="k">for</span> <span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">singular_cte_selections</span><span class="p">:</span> -</span><span id="merge_ctes-71"><a href="#merge_ctes-71"><span class="linenos">71</span></a> <span class="n">from_or_join</span> <span class="o">=</span> <span class="n">table</span><span class="o">.</span><span class="n">find_ancestor</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">From</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">)</span> -</span><span id="merge_ctes-72"><a href="#merge_ctes-72"><span class="linenos">72</span></a> <span class="k">if</span> <span class="n">_mergeable</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">):</span> -</span><span id="merge_ctes-73"><a href="#merge_ctes-73"><span class="linenos">73</span></a> <span class="n">alias</span> <span class="o">=</span> <span class="n">table</span><span class="o">.</span><span class="n">alias_or_name</span> -</span><span id="merge_ctes-74"><a href="#merge_ctes-74"><span class="linenos">74</span></a> <span class="n">_rename_inner_sources</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> -</span><span id="merge_ctes-75"><a href="#merge_ctes-75"><span class="linenos">75</span></a> <span class="n">_merge_from</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">table</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> -</span><span id="merge_ctes-76"><a href="#merge_ctes-76"><span class="linenos">76</span></a> <span class="n">_merge_expressions</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> -</span><span id="merge_ctes-77"><a href="#merge_ctes-77"><span class="linenos">77</span></a> <span class="n">_merge_joins</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">)</span> -</span><span id="merge_ctes-78"><a href="#merge_ctes-78"><span class="linenos">78</span></a> <span class="n">_merge_where</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">)</span> -</span><span id="merge_ctes-79"><a href="#merge_ctes-79"><span class="linenos">79</span></a> <span class="n">_merge_order</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">)</span> -</span><span id="merge_ctes-80"><a href="#merge_ctes-80"><span class="linenos">80</span></a> <span class="n">_merge_hints</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">)</span> -</span><span id="merge_ctes-81"><a href="#merge_ctes-81"><span class="linenos">81</span></a> <span class="n">_pop_cte</span><span class="p">(</span><span class="n">inner_scope</span><span class="p">)</span> -</span><span id="merge_ctes-82"><a href="#merge_ctes-82"><span class="linenos">82</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> -</span><span id="merge_ctes-83"><a href="#merge_ctes-83"><span class="linenos">83</span></a> <span class="k">return</span> <span class="n">expression</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="merge_ctes-51"><a href="#merge_ctes-51"><span class="linenos">51</span></a><span class="k">def</span> <span class="nf">merge_ctes</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> +</span><span id="merge_ctes-52"><a href="#merge_ctes-52"><span class="linenos">52</span></a> <span class="n">scopes</span> <span class="o">=</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="merge_ctes-53"><a href="#merge_ctes-53"><span class="linenos">53</span></a> +</span><span id="merge_ctes-54"><a href="#merge_ctes-54"><span class="linenos">54</span></a> <span class="c1"># All places where we select from CTEs.</span> +</span><span id="merge_ctes-55"><a href="#merge_ctes-55"><span class="linenos">55</span></a> <span class="c1"># We key on the CTE scope so we can detect CTES that are selected from multiple times.</span> +</span><span id="merge_ctes-56"><a href="#merge_ctes-56"><span class="linenos">56</span></a> <span class="n">cte_selections</span> <span class="o">=</span> <span class="n">defaultdict</span><span class="p">(</span><span class="nb">list</span><span class="p">)</span> +</span><span id="merge_ctes-57"><a href="#merge_ctes-57"><span class="linenos">57</span></a> <span class="k">for</span> <span class="n">outer_scope</span> <span class="ow">in</span> <span class="n">scopes</span><span class="p">:</span> +</span><span id="merge_ctes-58"><a href="#merge_ctes-58"><span class="linenos">58</span></a> <span class="k">for</span> <span class="n">table</span><span class="p">,</span> <span class="n">inner_scope</span> <span class="ow">in</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> +</span><span id="merge_ctes-59"><a href="#merge_ctes-59"><span class="linenos">59</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">inner_scope</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="n">inner_scope</span><span class="o">.</span><span class="n">is_cte</span><span class="p">:</span> +</span><span id="merge_ctes-60"><a href="#merge_ctes-60"><span class="linenos">60</span></a> <span class="n">cte_selections</span><span class="p">[</span><span class="nb">id</span><span class="p">(</span><span class="n">inner_scope</span><span class="p">)]</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> +</span><span id="merge_ctes-61"><a href="#merge_ctes-61"><span class="linenos">61</span></a> <span class="p">(</span> +</span><span id="merge_ctes-62"><a href="#merge_ctes-62"><span class="linenos">62</span></a> <span class="n">outer_scope</span><span class="p">,</span> +</span><span id="merge_ctes-63"><a href="#merge_ctes-63"><span class="linenos">63</span></a> <span class="n">inner_scope</span><span class="p">,</span> +</span><span id="merge_ctes-64"><a href="#merge_ctes-64"><span class="linenos">64</span></a> <span class="n">table</span><span class="p">,</span> +</span><span id="merge_ctes-65"><a href="#merge_ctes-65"><span class="linenos">65</span></a> <span class="p">)</span> +</span><span id="merge_ctes-66"><a href="#merge_ctes-66"><span class="linenos">66</span></a> <span class="p">)</span> +</span><span id="merge_ctes-67"><a href="#merge_ctes-67"><span class="linenos">67</span></a> +</span><span id="merge_ctes-68"><a href="#merge_ctes-68"><span class="linenos">68</span></a> <span class="n">singular_cte_selections</span> <span class="o">=</span> <span class="p">[</span><span class="n">v</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">cte_selections</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">v</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">]</span> +</span><span id="merge_ctes-69"><a href="#merge_ctes-69"><span class="linenos">69</span></a> <span class="k">for</span> <span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">singular_cte_selections</span><span class="p">:</span> +</span><span id="merge_ctes-70"><a href="#merge_ctes-70"><span class="linenos">70</span></a> <span class="n">from_or_join</span> <span class="o">=</span> <span class="n">table</span><span class="o">.</span><span class="n">find_ancestor</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">From</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">)</span> +</span><span id="merge_ctes-71"><a href="#merge_ctes-71"><span class="linenos">71</span></a> <span class="k">if</span> <span class="n">_mergeable</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">):</span> +</span><span id="merge_ctes-72"><a href="#merge_ctes-72"><span class="linenos">72</span></a> <span class="n">alias</span> <span class="o">=</span> <span class="n">table</span><span class="o">.</span><span class="n">alias_or_name</span> +</span><span id="merge_ctes-73"><a href="#merge_ctes-73"><span class="linenos">73</span></a> <span class="n">_rename_inner_sources</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> +</span><span id="merge_ctes-74"><a href="#merge_ctes-74"><span class="linenos">74</span></a> <span class="n">_merge_from</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">table</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> +</span><span id="merge_ctes-75"><a href="#merge_ctes-75"><span class="linenos">75</span></a> <span class="n">_merge_expressions</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> +</span><span id="merge_ctes-76"><a href="#merge_ctes-76"><span class="linenos">76</span></a> <span class="n">_merge_joins</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">)</span> +</span><span id="merge_ctes-77"><a href="#merge_ctes-77"><span class="linenos">77</span></a> <span class="n">_merge_where</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">)</span> +</span><span id="merge_ctes-78"><a href="#merge_ctes-78"><span class="linenos">78</span></a> <span class="n">_merge_order</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">)</span> +</span><span id="merge_ctes-79"><a href="#merge_ctes-79"><span class="linenos">79</span></a> <span class="n">_merge_hints</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">)</span> +</span><span id="merge_ctes-80"><a href="#merge_ctes-80"><span class="linenos">80</span></a> <span class="n">_pop_cte</span><span class="p">(</span><span class="n">inner_scope</span><span class="p">)</span> +</span><span id="merge_ctes-81"><a href="#merge_ctes-81"><span class="linenos">81</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> +</span><span id="merge_ctes-82"><a href="#merge_ctes-82"><span class="linenos">82</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -600,22 +599,22 @@ queries if it would result in multiple table selects in a single query:</p> </div> <a class="headerlink" href="#merge_derived_tables"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="merge_derived_tables-86"><a href="#merge_derived_tables-86"><span class="linenos"> 86</span></a><span class="k">def</span> <span class="nf">merge_derived_tables</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> -</span><span id="merge_derived_tables-87"><a href="#merge_derived_tables-87"><span class="linenos"> 87</span></a> <span class="k">for</span> <span class="n">outer_scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="merge_derived_tables-88"><a href="#merge_derived_tables-88"><span class="linenos"> 88</span></a> <span class="k">for</span> <span class="n">subquery</span> <span class="ow">in</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">derived_tables</span><span class="p">:</span> -</span><span id="merge_derived_tables-89"><a href="#merge_derived_tables-89"><span class="linenos"> 89</span></a> <span class="n">from_or_join</span> <span class="o">=</span> <span class="n">subquery</span><span class="o">.</span><span class="n">find_ancestor</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">From</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">)</span> -</span><span id="merge_derived_tables-90"><a href="#merge_derived_tables-90"><span class="linenos"> 90</span></a> <span class="n">alias</span> <span class="o">=</span> <span class="n">subquery</span><span class="o">.</span><span class="n">alias_or_name</span> -</span><span id="merge_derived_tables-91"><a href="#merge_derived_tables-91"><span class="linenos"> 91</span></a> <span class="n">inner_scope</span> <span class="o">=</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">alias</span><span class="p">]</span> -</span><span id="merge_derived_tables-92"><a href="#merge_derived_tables-92"><span class="linenos"> 92</span></a> <span class="k">if</span> <span class="n">_mergeable</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">):</span> -</span><span id="merge_derived_tables-93"><a href="#merge_derived_tables-93"><span class="linenos"> 93</span></a> <span class="n">_rename_inner_sources</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> -</span><span id="merge_derived_tables-94"><a href="#merge_derived_tables-94"><span class="linenos"> 94</span></a> <span class="n">_merge_from</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">subquery</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> -</span><span id="merge_derived_tables-95"><a href="#merge_derived_tables-95"><span class="linenos"> 95</span></a> <span class="n">_merge_expressions</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> -</span><span id="merge_derived_tables-96"><a href="#merge_derived_tables-96"><span class="linenos"> 96</span></a> <span class="n">_merge_joins</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">)</span> -</span><span id="merge_derived_tables-97"><a href="#merge_derived_tables-97"><span class="linenos"> 97</span></a> <span class="n">_merge_where</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">)</span> -</span><span id="merge_derived_tables-98"><a href="#merge_derived_tables-98"><span class="linenos"> 98</span></a> <span class="n">_merge_order</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">)</span> -</span><span id="merge_derived_tables-99"><a href="#merge_derived_tables-99"><span class="linenos"> 99</span></a> <span class="n">_merge_hints</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">)</span> -</span><span id="merge_derived_tables-100"><a href="#merge_derived_tables-100"><span class="linenos">100</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> -</span><span id="merge_derived_tables-101"><a href="#merge_derived_tables-101"><span class="linenos">101</span></a> <span class="k">return</span> <span class="n">expression</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="merge_derived_tables-85"><a href="#merge_derived_tables-85"><span class="linenos"> 85</span></a><span class="k">def</span> <span class="nf">merge_derived_tables</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> +</span><span id="merge_derived_tables-86"><a href="#merge_derived_tables-86"><span class="linenos"> 86</span></a> <span class="k">for</span> <span class="n">outer_scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="merge_derived_tables-87"><a href="#merge_derived_tables-87"><span class="linenos"> 87</span></a> <span class="k">for</span> <span class="n">subquery</span> <span class="ow">in</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">derived_tables</span><span class="p">:</span> +</span><span id="merge_derived_tables-88"><a href="#merge_derived_tables-88"><span class="linenos"> 88</span></a> <span class="n">from_or_join</span> <span class="o">=</span> <span class="n">subquery</span><span class="o">.</span><span class="n">find_ancestor</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">From</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">)</span> +</span><span id="merge_derived_tables-89"><a href="#merge_derived_tables-89"><span class="linenos"> 89</span></a> <span class="n">alias</span> <span class="o">=</span> <span class="n">subquery</span><span class="o">.</span><span class="n">alias_or_name</span> +</span><span id="merge_derived_tables-90"><a href="#merge_derived_tables-90"><span class="linenos"> 90</span></a> <span class="n">inner_scope</span> <span class="o">=</span> <span class="n">outer_scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">alias</span><span class="p">]</span> +</span><span id="merge_derived_tables-91"><a href="#merge_derived_tables-91"><span class="linenos"> 91</span></a> <span class="k">if</span> <span class="n">_mergeable</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">leave_tables_isolated</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">):</span> +</span><span id="merge_derived_tables-92"><a href="#merge_derived_tables-92"><span class="linenos"> 92</span></a> <span class="n">_rename_inner_sources</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> +</span><span id="merge_derived_tables-93"><a href="#merge_derived_tables-93"><span class="linenos"> 93</span></a> <span class="n">_merge_from</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">subquery</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> +</span><span id="merge_derived_tables-94"><a href="#merge_derived_tables-94"><span class="linenos"> 94</span></a> <span class="n">_merge_expressions</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">alias</span><span class="p">)</span> +</span><span id="merge_derived_tables-95"><a href="#merge_derived_tables-95"><span class="linenos"> 95</span></a> <span class="n">_merge_joins</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">)</span> +</span><span id="merge_derived_tables-96"><a href="#merge_derived_tables-96"><span class="linenos"> 96</span></a> <span class="n">_merge_where</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">,</span> <span class="n">from_or_join</span><span class="p">)</span> +</span><span id="merge_derived_tables-97"><a href="#merge_derived_tables-97"><span class="linenos"> 97</span></a> <span class="n">_merge_order</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">)</span> +</span><span id="merge_derived_tables-98"><a href="#merge_derived_tables-98"><span class="linenos"> 98</span></a> <span class="n">_merge_hints</span><span class="p">(</span><span class="n">outer_scope</span><span class="p">,</span> <span class="n">inner_scope</span><span class="p">)</span> +</span><span id="merge_derived_tables-99"><a href="#merge_derived_tables-99"><span class="linenos"> 99</span></a> <span class="n">outer_scope</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> +</span><span id="merge_derived_tables-100"><a href="#merge_derived_tables-100"><span class="linenos">100</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> diff --git a/docs/sqlglot/optimizer/normalize.html b/docs/sqlglot/optimizer/normalize.html index 708a94b..92095ba 100644 --- a/docs/sqlglot/optimizer/normalize.html +++ b/docs/sqlglot/optimizer/normalize.html @@ -3,7 +3,7 @@ <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> - <meta name="generator" content="pdoc 13.0.0"/> + <meta name="generator" content="pdoc 13.0.1"/> <title>sqlglot.optimizer.normalize API documentation</title> <style>/*! * Bootstrap Reboot 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+ .3vw);line-height:inherit}@media (min-width:1200px){legend{font-size:1.5rem}}legend+*{clear:left}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-fields-wrapper,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-text,::-webkit-datetime-edit-year-field{padding:0}::-webkit-inner-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:textfield}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-color-swatch-wrapper{padding:0}::file-selector-button{font:inherit}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}iframe{border:0}summary{display:list-item;cursor:pointer}progress{vertical-align:baseline}[hidden]{display:none!important}</style> @@ -28,8 +28,8 @@ - <h2>API Documentation</h2> - <ul class="memberlist"> + <h2>API Documentation</h2> + <ul class="memberlist"> <li> <a class="function" href="#normalize">normalize</a> </li> @@ -65,133 +65,167 @@ <label class="view-source-button" for="mod-normalize-view-source"><span>View Source</span></label> - <div class="pdoc-code codehilite"><pre><span></span><span id="L-1"><a href="#L-1"><span class="linenos"> 1</span></a><span class="kn">from</span> <span class="nn">sqlglot</span> <span class="kn">import</span> <span class="n">exp</span> -</span><span id="L-2"><a href="#L-2"><span class="linenos"> 2</span></a><span class="kn">from</span> <span class="nn">sqlglot.helper</span> <span class="kn">import</span> <span class="n">while_changing</span> -</span><span id="L-3"><a href="#L-3"><span class="linenos"> 3</span></a><span class="kn">from</span> <span class="nn">sqlglot.optimizer.simplify</span> <span class="kn">import</span> <span class="n">flatten</span><span class="p">,</span> <span class="n">simplify</span><span class="p">,</span> <span class="n">uniq_sort</span> -</span><span id="L-4"><a href="#L-4"><span class="linenos"> 4</span></a> + <div class="pdoc-code codehilite"><pre><span></span><span id="L-1"><a href="#L-1"><span class="linenos"> 1</span></a><span class="kn">from</span> <span class="nn">__future__</span> <span class="kn">import</span> <span class="n">annotations</span> +</span><span id="L-2"><a href="#L-2"><span class="linenos"> 2</span></a> +</span><span id="L-3"><a href="#L-3"><span class="linenos"> 3</span></a><span class="kn">import</span> <span class="nn">logging</span> +</span><span id="L-4"><a href="#L-4"><span class="linenos"> 4</span></a><span class="kn">import</span> <span class="nn">typing</span> <span class="k">as</span> <span class="nn">t</span> </span><span id="L-5"><a href="#L-5"><span class="linenos"> 5</span></a> -</span><span id="L-6"><a href="#L-6"><span class="linenos"> 6</span></a><span class="k">def</span> <span class="nf">normalize</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">max_distance</span><span class="o">=</span><span class="mi">128</span><span class="p">):</span> -</span><span id="L-7"><a href="#L-7"><span class="linenos"> 7</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-8"><a href="#L-8"><span class="linenos"> 8</span></a><span class="sd"> Rewrite sqlglot AST into conjunctive normal form.</span> -</span><span id="L-9"><a href="#L-9"><span class="linenos"> 9</span></a> -</span><span id="L-10"><a href="#L-10"><span class="linenos"> 10</span></a><span class="sd"> Example:</span> -</span><span id="L-11"><a href="#L-11"><span class="linenos"> 11</span></a><span class="sd"> >>> import sqlglot</span> -</span><span id="L-12"><a href="#L-12"><span class="linenos"> 12</span></a><span class="sd"> >>> expression = sqlglot.parse_one("(x AND y) OR z")</span> -</span><span id="L-13"><a href="#L-13"><span class="linenos"> 13</span></a><span class="sd"> >>> normalize(expression).sql()</span> -</span><span id="L-14"><a href="#L-14"><span class="linenos"> 14</span></a><span class="sd"> '(x OR z) AND (y OR z)'</span> -</span><span id="L-15"><a href="#L-15"><span class="linenos"> 15</span></a> -</span><span id="L-16"><a href="#L-16"><span class="linenos"> 16</span></a><span class="sd"> Args:</span> -</span><span id="L-17"><a href="#L-17"><span class="linenos"> 17</span></a><span class="sd"> expression (sqlglot.Expression): expression to normalize</span> -</span><span id="L-18"><a href="#L-18"><span class="linenos"> 18</span></a><span class="sd"> dnf (bool): rewrite in disjunctive normal form instead</span> -</span><span id="L-19"><a href="#L-19"><span class="linenos"> 19</span></a><span class="sd"> max_distance (int): the maximal estimated distance from cnf to attempt conversion</span> -</span><span id="L-20"><a href="#L-20"><span class="linenos"> 20</span></a><span class="sd"> Returns:</span> -</span><span id="L-21"><a href="#L-21"><span class="linenos"> 21</span></a><span class="sd"> sqlglot.Expression: normalized expression</span> -</span><span id="L-22"><a href="#L-22"><span class="linenos"> 22</span></a><span class="sd"> """</span> -</span><span id="L-23"><a href="#L-23"><span class="linenos"> 23</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-24"><a href="#L-24"><span class="linenos"> 24</span></a> -</span><span id="L-25"><a href="#L-25"><span class="linenos"> 25</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">while_changing</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="k">lambda</span> <span class="n">e</span><span class="p">:</span> <span class="n">distributive_law</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="n">dnf</span><span class="p">,</span> <span class="n">max_distance</span><span class="p">))</span> -</span><span id="L-26"><a href="#L-26"><span class="linenos"> 26</span></a> <span class="k">return</span> <span class="n">simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-27"><a href="#L-27"><span class="linenos"> 27</span></a> -</span><span id="L-28"><a href="#L-28"><span class="linenos"> 28</span></a> -</span><span id="L-29"><a href="#L-29"><span class="linenos"> 29</span></a><span class="k">def</span> <span class="nf">normalized</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> -</span><span id="L-30"><a href="#L-30"><span class="linenos"> 30</span></a> <span class="n">ancestor</span><span class="p">,</span> <span class="n">root</span> <span class="o">=</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">)</span> <span class="k">if</span> <span class="n">dnf</span> <span class="k">else</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> -</span><span id="L-31"><a href="#L-31"><span class="linenos"> 31</span></a> -</span><span id="L-32"><a href="#L-32"><span class="linenos"> 32</span></a> <span class="k">return</span> <span class="ow">not</span> <span class="nb">any</span><span class="p">(</span><span class="n">connector</span><span class="o">.</span><span class="n">find_ancestor</span><span class="p">(</span><span class="n">ancestor</span><span class="p">)</span> <span class="k">for</span> <span class="n">connector</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">root</span><span class="p">))</span> -</span><span id="L-33"><a href="#L-33"><span class="linenos"> 33</span></a> -</span><span id="L-34"><a href="#L-34"><span class="linenos"> 34</span></a> -</span><span id="L-35"><a href="#L-35"><span class="linenos"> 35</span></a><span class="k">def</span> <span class="nf">normalization_distance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> -</span><span id="L-36"><a href="#L-36"><span class="linenos"> 36</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-37"><a href="#L-37"><span class="linenos"> 37</span></a><span class="sd"> The difference in the number of predicates between the current expression and the normalized form.</span> -</span><span id="L-38"><a href="#L-38"><span class="linenos"> 38</span></a> -</span><span id="L-39"><a href="#L-39"><span class="linenos"> 39</span></a><span class="sd"> This is used as an estimate of the cost of the conversion which is exponential in complexity.</span> -</span><span id="L-40"><a href="#L-40"><span class="linenos"> 40</span></a> -</span><span id="L-41"><a href="#L-41"><span class="linenos"> 41</span></a><span class="sd"> Example:</span> -</span><span id="L-42"><a href="#L-42"><span class="linenos"> 42</span></a><span class="sd"> >>> import sqlglot</span> -</span><span id="L-43"><a href="#L-43"><span class="linenos"> 43</span></a><span class="sd"> >>> expression = sqlglot.parse_one("(a AND b) OR (c AND d)")</span> -</span><span id="L-44"><a href="#L-44"><span class="linenos"> 44</span></a><span class="sd"> >>> normalization_distance(expression)</span> -</span><span id="L-45"><a href="#L-45"><span class="linenos"> 45</span></a><span class="sd"> 4</span> -</span><span id="L-46"><a href="#L-46"><span class="linenos"> 46</span></a> -</span><span id="L-47"><a href="#L-47"><span class="linenos"> 47</span></a><span class="sd"> Args:</span> -</span><span id="L-48"><a href="#L-48"><span class="linenos"> 48</span></a><span class="sd"> expression (sqlglot.Expression): expression to compute distance</span> -</span><span id="L-49"><a href="#L-49"><span class="linenos"> 49</span></a><span class="sd"> dnf (bool): compute to dnf distance instead</span> -</span><span id="L-50"><a href="#L-50"><span class="linenos"> 50</span></a><span class="sd"> Returns:</span> -</span><span id="L-51"><a href="#L-51"><span class="linenos"> 51</span></a><span class="sd"> int: difference</span> -</span><span id="L-52"><a href="#L-52"><span class="linenos"> 52</span></a><span class="sd"> """</span> -</span><span id="L-53"><a href="#L-53"><span class="linenos"> 53</span></a> <span class="k">return</span> <span class="nb">sum</span><span class="p">(</span><span class="n">_predicate_lengths</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="p">))</span> <span class="o">-</span> <span class="p">(</span> -</span><span id="L-54"><a href="#L-54"><span class="linenos"> 54</span></a> <span class="nb">len</span><span class="p">(</span><span class="nb">list</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">)))</span> <span class="o">+</span> <span class="mi">1</span> -</span><span id="L-55"><a href="#L-55"><span class="linenos"> 55</span></a> <span class="p">)</span> +</span><span id="L-6"><a href="#L-6"><span class="linenos"> 6</span></a><span class="kn">from</span> <span class="nn">sqlglot</span> <span class="kn">import</span> <span class="n">exp</span> +</span><span id="L-7"><a href="#L-7"><span class="linenos"> 7</span></a><span class="kn">from</span> <span class="nn">sqlglot.errors</span> <span class="kn">import</span> <span class="n">OptimizeError</span> +</span><span id="L-8"><a href="#L-8"><span class="linenos"> 8</span></a><span class="kn">from</span> <span class="nn">sqlglot.helper</span> <span class="kn">import</span> <span class="n">while_changing</span> +</span><span id="L-9"><a href="#L-9"><span class="linenos"> 9</span></a><span class="kn">from</span> <span class="nn">sqlglot.optimizer.simplify</span> <span class="kn">import</span> <span class="n">flatten</span><span class="p">,</span> <span class="n">uniq_sort</span> +</span><span id="L-10"><a href="#L-10"><span class="linenos"> 10</span></a> +</span><span id="L-11"><a href="#L-11"><span class="linenos"> 11</span></a><span class="n">logger</span> <span class="o">=</span> <span class="n">logging</span><span class="o">.</span><span class="n">getLogger</span><span class="p">(</span><span class="s2">"sqlglot"</span><span class="p">)</span> +</span><span id="L-12"><a href="#L-12"><span class="linenos"> 12</span></a> +</span><span id="L-13"><a href="#L-13"><span class="linenos"> 13</span></a> +</span><span id="L-14"><a href="#L-14"><span class="linenos"> 14</span></a><span class="k">def</span> <span class="nf">normalize</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> <span class="n">dnf</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span><span class="p">,</span> <span class="n">max_distance</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">128</span><span class="p">):</span> +</span><span id="L-15"><a href="#L-15"><span class="linenos"> 15</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-16"><a href="#L-16"><span class="linenos"> 16</span></a><span class="sd"> Rewrite sqlglot AST into conjunctive normal form or disjunctive normal form.</span> +</span><span id="L-17"><a href="#L-17"><span class="linenos"> 17</span></a> +</span><span id="L-18"><a href="#L-18"><span class="linenos"> 18</span></a><span class="sd"> Example:</span> +</span><span id="L-19"><a href="#L-19"><span class="linenos"> 19</span></a><span class="sd"> >>> import sqlglot</span> +</span><span id="L-20"><a href="#L-20"><span class="linenos"> 20</span></a><span class="sd"> >>> expression = sqlglot.parse_one("(x AND y) OR z")</span> +</span><span id="L-21"><a href="#L-21"><span class="linenos"> 21</span></a><span class="sd"> >>> normalize(expression, dnf=False).sql()</span> +</span><span id="L-22"><a href="#L-22"><span class="linenos"> 22</span></a><span class="sd"> '(x OR z) AND (y OR z)'</span> +</span><span id="L-23"><a href="#L-23"><span class="linenos"> 23</span></a> +</span><span id="L-24"><a href="#L-24"><span class="linenos"> 24</span></a><span class="sd"> Args:</span> +</span><span id="L-25"><a href="#L-25"><span class="linenos"> 25</span></a><span class="sd"> expression: expression to normalize</span> +</span><span id="L-26"><a href="#L-26"><span class="linenos"> 26</span></a><span class="sd"> dnf: rewrite in disjunctive normal form instead.</span> +</span><span id="L-27"><a href="#L-27"><span class="linenos"> 27</span></a><span class="sd"> max_distance (int): the maximal estimated distance from cnf/dnf to attempt conversion</span> +</span><span id="L-28"><a href="#L-28"><span class="linenos"> 28</span></a><span class="sd"> Returns:</span> +</span><span id="L-29"><a href="#L-29"><span class="linenos"> 29</span></a><span class="sd"> sqlglot.Expression: normalized expression</span> +</span><span id="L-30"><a href="#L-30"><span class="linenos"> 30</span></a><span class="sd"> """</span> +</span><span id="L-31"><a href="#L-31"><span class="linenos"> 31</span></a> <span class="n">cache</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">int</span><span class="p">,</span> <span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="L-32"><a href="#L-32"><span class="linenos"> 32</span></a> +</span><span id="L-33"><a href="#L-33"><span class="linenos"> 33</span></a> <span class="k">for</span> <span class="n">node</span><span class="p">,</span> <span class="o">*</span><span class="n">_</span> <span class="ow">in</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">walk</span><span class="p">(</span><span class="n">prune</span><span class="o">=</span><span class="k">lambda</span> <span class="n">e</span><span class="p">,</span> <span class="o">*</span><span class="n">_</span><span class="p">:</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">))):</span> +</span><span id="L-34"><a href="#L-34"><span class="linenos"> 34</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> +</span><span id="L-35"><a href="#L-35"><span class="linenos"> 35</span></a> <span class="k">if</span> <span class="n">normalized</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">dnf</span><span class="o">=</span><span class="n">dnf</span><span class="p">):</span> +</span><span id="L-36"><a href="#L-36"><span class="linenos"> 36</span></a> <span class="k">continue</span> +</span><span id="L-37"><a href="#L-37"><span class="linenos"> 37</span></a> +</span><span id="L-38"><a href="#L-38"><span class="linenos"> 38</span></a> <span class="n">distance</span> <span class="o">=</span> <span class="n">normalization_distance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">dnf</span><span class="o">=</span><span class="n">dnf</span><span class="p">)</span> +</span><span id="L-39"><a href="#L-39"><span class="linenos"> 39</span></a> +</span><span id="L-40"><a href="#L-40"><span class="linenos"> 40</span></a> <span class="k">if</span> <span class="n">distance</span> <span class="o">></span> <span class="n">max_distance</span><span class="p">:</span> +</span><span id="L-41"><a href="#L-41"><span class="linenos"> 41</span></a> <span class="n">logger</span><span class="o">.</span><span class="n">info</span><span class="p">(</span> +</span><span id="L-42"><a href="#L-42"><span class="linenos"> 42</span></a> <span class="sa">f</span><span class="s2">"Skipping normalization because distance </span><span class="si">{</span><span class="n">distance</span><span class="si">}</span><span class="s2"> exceeds max </span><span class="si">{</span><span class="n">max_distance</span><span class="si">}</span><span class="s2">"</span> +</span><span id="L-43"><a href="#L-43"><span class="linenos"> 43</span></a> <span class="p">)</span> +</span><span id="L-44"><a href="#L-44"><span class="linenos"> 44</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-45"><a href="#L-45"><span class="linenos"> 45</span></a> +</span><span id="L-46"><a href="#L-46"><span class="linenos"> 46</span></a> <span class="n">root</span> <span class="o">=</span> <span class="n">node</span> <span class="ow">is</span> <span class="n">expression</span> +</span><span id="L-47"><a href="#L-47"><span class="linenos"> 47</span></a> <span class="n">original</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">copy</span><span class="p">()</span> +</span><span id="L-48"><a href="#L-48"><span class="linenos"> 48</span></a> <span class="k">try</span><span class="p">:</span> +</span><span id="L-49"><a href="#L-49"><span class="linenos"> 49</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">while_changing</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="k">lambda</span> <span class="n">e</span><span class="p">:</span> <span class="n">distributive_law</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="n">dnf</span><span class="p">,</span> <span class="n">max_distance</span><span class="p">,</span> <span class="n">cache</span><span class="p">))</span> +</span><span id="L-50"><a href="#L-50"><span class="linenos"> 50</span></a> <span class="k">except</span> <span class="n">OptimizeError</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span> +</span><span id="L-51"><a href="#L-51"><span class="linenos"> 51</span></a> <span class="n">logger</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="n">e</span><span class="p">)</span> +</span><span id="L-52"><a href="#L-52"><span class="linenos"> 52</span></a> <span class="n">node</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">original</span><span class="p">)</span> +</span><span id="L-53"><a href="#L-53"><span class="linenos"> 53</span></a> <span class="k">if</span> <span class="n">root</span><span class="p">:</span> +</span><span id="L-54"><a href="#L-54"><span class="linenos"> 54</span></a> <span class="k">return</span> <span class="n">original</span> +</span><span id="L-55"><a href="#L-55"><span class="linenos"> 55</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="L-56"><a href="#L-56"><span class="linenos"> 56</span></a> -</span><span id="L-57"><a href="#L-57"><span class="linenos"> 57</span></a> -</span><span id="L-58"><a href="#L-58"><span class="linenos"> 58</span></a><span class="k">def</span> <span class="nf">_predicate_lengths</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="p">):</span> -</span><span id="L-59"><a href="#L-59"><span class="linenos"> 59</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-60"><a href="#L-60"><span class="linenos"> 60</span></a><span class="sd"> Returns a list of predicate lengths when expanded to normalized form.</span> +</span><span id="L-57"><a href="#L-57"><span class="linenos"> 57</span></a> <span class="k">if</span> <span class="n">root</span><span class="p">:</span> +</span><span id="L-58"><a href="#L-58"><span class="linenos"> 58</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">node</span> +</span><span id="L-59"><a href="#L-59"><span class="linenos"> 59</span></a> +</span><span id="L-60"><a href="#L-60"><span class="linenos"> 60</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="L-61"><a href="#L-61"><span class="linenos"> 61</span></a> -</span><span id="L-62"><a href="#L-62"><span class="linenos"> 62</span></a><span class="sd"> (A AND B) OR C -> [2, 2] because len(A OR C), len(B OR C).</span> -</span><span id="L-63"><a href="#L-63"><span class="linenos"> 63</span></a><span class="sd"> """</span> -</span><span id="L-64"><a href="#L-64"><span class="linenos"> 64</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span> +</span><span id="L-62"><a href="#L-62"><span class="linenos"> 62</span></a> +</span><span id="L-63"><a href="#L-63"><span class="linenos"> 63</span></a><span class="k">def</span> <span class="nf">normalized</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> +</span><span id="L-64"><a href="#L-64"><span class="linenos"> 64</span></a> <span class="n">ancestor</span><span class="p">,</span> <span class="n">root</span> <span class="o">=</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">)</span> <span class="k">if</span> <span class="n">dnf</span> <span class="k">else</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> </span><span id="L-65"><a href="#L-65"><span class="linenos"> 65</span></a> -</span><span id="L-66"><a href="#L-66"><span class="linenos"> 66</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> -</span><span id="L-67"><a href="#L-67"><span class="linenos"> 67</span></a> <span class="k">return</span> <span class="p">[</span><span class="mi">1</span><span class="p">]</span> +</span><span id="L-66"><a href="#L-66"><span class="linenos"> 66</span></a> <span class="k">return</span> <span class="ow">not</span> <span class="nb">any</span><span class="p">(</span><span class="n">connector</span><span class="o">.</span><span class="n">find_ancestor</span><span class="p">(</span><span class="n">ancestor</span><span class="p">)</span> <span class="k">for</span> <span class="n">connector</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">root</span><span class="p">))</span> +</span><span id="L-67"><a href="#L-67"><span class="linenos"> 67</span></a> </span><span id="L-68"><a href="#L-68"><span class="linenos"> 68</span></a> -</span><span id="L-69"><a href="#L-69"><span class="linenos"> 69</span></a> <span class="n">left</span><span class="p">,</span> <span class="n">right</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">values</span><span class="p">()</span> -</span><span id="L-70"><a href="#L-70"><span class="linenos"> 70</span></a> -</span><span id="L-71"><a href="#L-71"><span class="linenos"> 71</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">if</span> <span class="n">dnf</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">):</span> -</span><span id="L-72"><a href="#L-72"><span class="linenos"> 72</span></a> <span class="k">return</span> <span class="p">[</span> -</span><span id="L-73"><a href="#L-73"><span class="linenos"> 73</span></a> <span class="n">a</span> <span class="o">+</span> <span class="n">b</span> <span class="k">for</span> <span class="n">a</span> <span class="ow">in</span> <span class="n">_predicate_lengths</span><span class="p">(</span><span class="n">left</span><span class="p">,</span> <span class="n">dnf</span><span class="p">)</span> <span class="k">for</span> <span class="n">b</span> <span class="ow">in</span> <span class="n">_predicate_lengths</span><span class="p">(</span><span class="n">right</span><span class="p">,</span> <span class="n">dnf</span><span class="p">)</span> -</span><span id="L-74"><a href="#L-74"><span class="linenos"> 74</span></a> <span class="p">]</span> -</span><span id="L-75"><a href="#L-75"><span class="linenos"> 75</span></a> <span class="k">return</span> <span class="n">_predicate_lengths</span><span class="p">(</span><span class="n">left</span><span class="p">,</span> <span class="n">dnf</span><span class="p">)</span> <span class="o">+</span> <span class="n">_predicate_lengths</span><span class="p">(</span><span class="n">right</span><span class="p">,</span> <span class="n">dnf</span><span class="p">)</span> -</span><span id="L-76"><a href="#L-76"><span class="linenos"> 76</span></a> -</span><span id="L-77"><a href="#L-77"><span class="linenos"> 77</span></a> -</span><span id="L-78"><a href="#L-78"><span class="linenos"> 78</span></a><span class="k">def</span> <span class="nf">distributive_law</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="p">,</span> <span class="n">max_distance</span><span class="p">):</span> -</span><span id="L-79"><a href="#L-79"><span class="linenos"> 79</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-80"><a href="#L-80"><span class="linenos"> 80</span></a><span class="sd"> x OR (y AND z) -> (x OR y) AND (x OR z)</span> -</span><span id="L-81"><a href="#L-81"><span class="linenos"> 81</span></a><span class="sd"> (x AND y) OR (y AND z) -> (x OR y) AND (x OR z) AND (y OR y) AND (y OR z)</span> -</span><span id="L-82"><a href="#L-82"><span class="linenos"> 82</span></a><span class="sd"> """</span> -</span><span id="L-83"><a href="#L-83"><span class="linenos"> 83</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">unnest</span><span class="p">(),</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> -</span><span id="L-84"><a href="#L-84"><span class="linenos"> 84</span></a> <span class="k">if</span> <span class="n">normalization_distance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="p">)</span> <span class="o">></span> <span class="n">max_distance</span><span class="p">:</span> -</span><span id="L-85"><a href="#L-85"><span class="linenos"> 85</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-86"><a href="#L-86"><span class="linenos"> 86</span></a> -</span><span id="L-87"><a href="#L-87"><span class="linenos"> 87</span></a> <span class="n">to_exp</span><span class="p">,</span> <span class="n">from_exp</span> <span class="o">=</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">if</span> <span class="n">dnf</span> <span class="k">else</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">)</span> -</span><span id="L-88"><a href="#L-88"><span class="linenos"> 88</span></a> -</span><span id="L-89"><a href="#L-89"><span class="linenos"> 89</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">replace_children</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="k">lambda</span> <span class="n">e</span><span class="p">:</span> <span class="n">distributive_law</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="n">dnf</span><span class="p">,</span> <span class="n">max_distance</span><span class="p">))</span> +</span><span id="L-69"><a href="#L-69"><span class="linenos"> 69</span></a><span class="k">def</span> <span class="nf">normalization_distance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> +</span><span id="L-70"><a href="#L-70"><span class="linenos"> 70</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-71"><a href="#L-71"><span class="linenos"> 71</span></a><span class="sd"> The difference in the number of predicates between the current expression and the normalized form.</span> +</span><span id="L-72"><a href="#L-72"><span class="linenos"> 72</span></a> +</span><span id="L-73"><a href="#L-73"><span class="linenos"> 73</span></a><span class="sd"> This is used as an estimate of the cost of the conversion which is exponential in complexity.</span> +</span><span id="L-74"><a href="#L-74"><span class="linenos"> 74</span></a> +</span><span id="L-75"><a href="#L-75"><span class="linenos"> 75</span></a><span class="sd"> Example:</span> +</span><span id="L-76"><a href="#L-76"><span class="linenos"> 76</span></a><span class="sd"> >>> import sqlglot</span> +</span><span id="L-77"><a href="#L-77"><span class="linenos"> 77</span></a><span class="sd"> >>> expression = sqlglot.parse_one("(a AND b) OR (c AND d)")</span> +</span><span id="L-78"><a href="#L-78"><span class="linenos"> 78</span></a><span class="sd"> >>> normalization_distance(expression)</span> +</span><span id="L-79"><a href="#L-79"><span class="linenos"> 79</span></a><span class="sd"> 4</span> +</span><span id="L-80"><a href="#L-80"><span class="linenos"> 80</span></a> +</span><span id="L-81"><a href="#L-81"><span class="linenos"> 81</span></a><span class="sd"> Args:</span> +</span><span id="L-82"><a href="#L-82"><span class="linenos"> 82</span></a><span class="sd"> expression (sqlglot.Expression): expression to compute distance</span> +</span><span id="L-83"><a href="#L-83"><span class="linenos"> 83</span></a><span class="sd"> dnf (bool): compute to dnf distance instead</span> +</span><span id="L-84"><a href="#L-84"><span class="linenos"> 84</span></a><span class="sd"> Returns:</span> +</span><span id="L-85"><a href="#L-85"><span class="linenos"> 85</span></a><span class="sd"> int: difference</span> +</span><span id="L-86"><a href="#L-86"><span class="linenos"> 86</span></a><span class="sd"> """</span> +</span><span id="L-87"><a href="#L-87"><span class="linenos"> 87</span></a> <span class="k">return</span> <span class="nb">sum</span><span class="p">(</span><span class="n">_predicate_lengths</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="p">))</span> <span class="o">-</span> <span class="p">(</span> +</span><span id="L-88"><a href="#L-88"><span class="linenos"> 88</span></a> <span class="nb">sum</span><span class="p">(</span><span class="mi">1</span> <span class="k">for</span> <span class="n">_</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">))</span> <span class="o">+</span> <span class="mi">1</span> +</span><span id="L-89"><a href="#L-89"><span class="linenos"> 89</span></a> <span class="p">)</span> </span><span id="L-90"><a href="#L-90"><span class="linenos"> 90</span></a> -</span><span id="L-91"><a href="#L-91"><span class="linenos"> 91</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">from_exp</span><span class="p">):</span> -</span><span id="L-92"><a href="#L-92"><span class="linenos"> 92</span></a> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">()</span> -</span><span id="L-93"><a href="#L-93"><span class="linenos"> 93</span></a> -</span><span id="L-94"><a href="#L-94"><span class="linenos"> 94</span></a> <span class="n">from_func</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span> <span class="k">if</span> <span class="n">from_exp</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span> -</span><span id="L-95"><a href="#L-95"><span class="linenos"> 95</span></a> <span class="n">to_func</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span> <span class="k">if</span> <span class="n">to_exp</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span> -</span><span id="L-96"><a href="#L-96"><span class="linenos"> 96</span></a> -</span><span id="L-97"><a href="#L-97"><span class="linenos"> 97</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">to_exp</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">to_exp</span><span class="p">):</span> -</span><span id="L-98"><a href="#L-98"><span class="linenos"> 98</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="nb">tuple</span><span class="p">(</span><span class="n">a</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">)))</span> <span class="o">></span> <span class="nb">len</span><span class="p">(</span><span class="nb">tuple</span><span class="p">(</span><span class="n">b</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">))):</span> -</span><span id="L-99"><a href="#L-99"><span class="linenos"> 99</span></a> <span class="k">return</span> <span class="n">_distribute</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">,</span> <span class="n">from_func</span><span class="p">,</span> <span class="n">to_func</span><span class="p">)</span> -</span><span id="L-100"><a href="#L-100"><span class="linenos">100</span></a> <span class="k">return</span> <span class="n">_distribute</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">from_func</span><span class="p">,</span> <span class="n">to_func</span><span class="p">)</span> -</span><span id="L-101"><a href="#L-101"><span class="linenos">101</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">to_exp</span><span class="p">):</span> -</span><span id="L-102"><a href="#L-102"><span class="linenos">102</span></a> <span class="k">return</span> <span class="n">_distribute</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">from_func</span><span class="p">,</span> <span class="n">to_func</span><span class="p">)</span> -</span><span id="L-103"><a href="#L-103"><span class="linenos">103</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">to_exp</span><span class="p">):</span> -</span><span id="L-104"><a href="#L-104"><span class="linenos">104</span></a> <span class="k">return</span> <span class="n">_distribute</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">,</span> <span class="n">from_func</span><span class="p">,</span> <span class="n">to_func</span><span class="p">)</span> -</span><span id="L-105"><a href="#L-105"><span class="linenos">105</span></a> -</span><span id="L-106"><a href="#L-106"><span class="linenos">106</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-107"><a href="#L-107"><span class="linenos">107</span></a> -</span><span id="L-108"><a href="#L-108"><span class="linenos">108</span></a> -</span><span id="L-109"><a href="#L-109"><span class="linenos">109</span></a><span class="k">def</span> <span class="nf">_distribute</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">,</span> <span class="n">from_func</span><span class="p">,</span> <span class="n">to_func</span><span class="p">):</span> -</span><span id="L-110"><a href="#L-110"><span class="linenos">110</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> -</span><span id="L-111"><a href="#L-111"><span class="linenos">111</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">replace_children</span><span class="p">(</span> -</span><span id="L-112"><a href="#L-112"><span class="linenos">112</span></a> <span class="n">a</span><span class="p">,</span> -</span><span id="L-113"><a href="#L-113"><span class="linenos">113</span></a> <span class="k">lambda</span> <span class="n">c</span><span class="p">:</span> <span class="n">to_func</span><span class="p">(</span> -</span><span id="L-114"><a href="#L-114"><span class="linenos">114</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">paren</span><span class="p">(</span><span class="n">from_func</span><span class="p">(</span><span class="n">c</span><span class="p">,</span> <span class="n">b</span><span class="o">.</span><span class="n">left</span><span class="p">)),</span> -</span><span id="L-115"><a href="#L-115"><span class="linenos">115</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">paren</span><span class="p">(</span><span class="n">from_func</span><span class="p">(</span><span class="n">c</span><span class="p">,</span> <span class="n">b</span><span class="o">.</span><span class="n">right</span><span class="p">)),</span> -</span><span id="L-116"><a href="#L-116"><span class="linenos">116</span></a> <span class="p">),</span> -</span><span id="L-117"><a href="#L-117"><span class="linenos">117</span></a> <span class="p">)</span> -</span><span id="L-118"><a href="#L-118"><span class="linenos">118</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a> <span class="n">a</span> <span class="o">=</span> <span class="n">to_func</span><span class="p">(</span><span class="n">from_func</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="o">.</span><span class="n">left</span><span class="p">),</span> <span class="n">from_func</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="o">.</span><span class="n">right</span><span class="p">))</span> -</span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a> -</span><span id="L-121"><a href="#L-121"><span class="linenos">121</span></a> <span class="k">return</span> <span class="n">_simplify</span><span class="p">(</span><span class="n">a</span><span class="p">)</span> -</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a> -</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a> -</span><span id="L-124"><a href="#L-124"><span class="linenos">124</span></a><span class="k">def</span> <span class="nf">_simplify</span><span class="p">(</span><span class="n">node</span><span class="p">):</span> -</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">uniq_sort</span><span class="p">(</span><span class="n">flatten</span><span class="p">(</span><span class="n">node</span><span class="p">))</span> -</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">replace_children</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">_simplify</span><span class="p">)</span> -</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a> <span class="k">return</span> <span class="n">node</span> +</span><span id="L-91"><a href="#L-91"><span class="linenos"> 91</span></a> +</span><span id="L-92"><a href="#L-92"><span class="linenos"> 92</span></a><span class="k">def</span> <span class="nf">_predicate_lengths</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="p">):</span> +</span><span id="L-93"><a href="#L-93"><span class="linenos"> 93</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-94"><a href="#L-94"><span class="linenos"> 94</span></a><span class="sd"> Returns a list of predicate lengths when expanded to normalized form.</span> +</span><span id="L-95"><a href="#L-95"><span class="linenos"> 95</span></a> +</span><span id="L-96"><a href="#L-96"><span class="linenos"> 96</span></a><span class="sd"> (A AND B) OR C -> [2, 2] because len(A OR C), len(B OR C).</span> +</span><span id="L-97"><a href="#L-97"><span class="linenos"> 97</span></a><span class="sd"> """</span> +</span><span id="L-98"><a href="#L-98"><span class="linenos"> 98</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span> +</span><span id="L-99"><a href="#L-99"><span class="linenos"> 99</span></a> +</span><span id="L-100"><a href="#L-100"><span class="linenos">100</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> +</span><span id="L-101"><a href="#L-101"><span class="linenos">101</span></a> <span class="k">return</span> <span class="p">(</span><span class="mi">1</span><span class="p">,)</span> +</span><span id="L-102"><a href="#L-102"><span class="linenos">102</span></a> +</span><span id="L-103"><a href="#L-103"><span class="linenos">103</span></a> <span class="n">left</span><span class="p">,</span> <span class="n">right</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">values</span><span class="p">()</span> +</span><span id="L-104"><a href="#L-104"><span class="linenos">104</span></a> +</span><span id="L-105"><a href="#L-105"><span class="linenos">105</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">if</span> <span class="n">dnf</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">):</span> +</span><span id="L-106"><a href="#L-106"><span class="linenos">106</span></a> <span class="k">return</span> <span class="nb">tuple</span><span class="p">(</span> +</span><span id="L-107"><a href="#L-107"><span class="linenos">107</span></a> <span class="n">a</span> <span class="o">+</span> <span class="n">b</span> <span class="k">for</span> <span class="n">a</span> <span class="ow">in</span> <span class="n">_predicate_lengths</span><span class="p">(</span><span class="n">left</span><span class="p">,</span> <span class="n">dnf</span><span class="p">)</span> <span class="k">for</span> <span class="n">b</span> <span class="ow">in</span> <span class="n">_predicate_lengths</span><span class="p">(</span><span class="n">right</span><span class="p">,</span> <span class="n">dnf</span><span class="p">)</span> +</span><span id="L-108"><a href="#L-108"><span class="linenos">108</span></a> <span class="p">)</span> +</span><span id="L-109"><a href="#L-109"><span class="linenos">109</span></a> <span class="k">return</span> <span class="n">_predicate_lengths</span><span class="p">(</span><span class="n">left</span><span class="p">,</span> <span class="n">dnf</span><span class="p">)</span> <span class="o">+</span> <span class="n">_predicate_lengths</span><span class="p">(</span><span class="n">right</span><span class="p">,</span> <span class="n">dnf</span><span class="p">)</span> +</span><span id="L-110"><a href="#L-110"><span class="linenos">110</span></a> +</span><span id="L-111"><a href="#L-111"><span class="linenos">111</span></a> +</span><span id="L-112"><a href="#L-112"><span class="linenos">112</span></a><span class="k">def</span> <span class="nf">distributive_law</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="p">,</span> <span class="n">max_distance</span><span class="p">,</span> <span class="n">cache</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> +</span><span id="L-113"><a href="#L-113"><span class="linenos">113</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-114"><a href="#L-114"><span class="linenos">114</span></a><span class="sd"> x OR (y AND z) -> (x OR y) AND (x OR z)</span> +</span><span id="L-115"><a href="#L-115"><span class="linenos">115</span></a><span class="sd"> (x AND y) OR (y AND z) -> (x OR y) AND (x OR z) AND (y OR y) AND (y OR z)</span> +</span><span id="L-116"><a href="#L-116"><span class="linenos">116</span></a><span class="sd"> """</span> +</span><span id="L-117"><a href="#L-117"><span class="linenos">117</span></a> <span class="k">if</span> <span class="n">normalized</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="o">=</span><span class="n">dnf</span><span class="p">):</span> +</span><span id="L-118"><a href="#L-118"><span class="linenos">118</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a> +</span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a> <span class="n">distance</span> <span class="o">=</span> <span class="n">normalization_distance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="o">=</span><span class="n">dnf</span><span class="p">)</span> +</span><span id="L-121"><a href="#L-121"><span class="linenos">121</span></a> +</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a> <span class="k">if</span> <span class="n">distance</span> <span class="o">></span> <span class="n">max_distance</span><span class="p">:</span> +</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Normalization distance </span><span class="si">{</span><span class="n">distance</span><span class="si">}</span><span class="s2"> exceeds max </span><span class="si">{</span><span class="n">max_distance</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="L-124"><a href="#L-124"><span class="linenos">124</span></a> +</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">replace_children</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="k">lambda</span> <span class="n">e</span><span class="p">:</span> <span class="n">distributive_law</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="n">dnf</span><span class="p">,</span> <span class="n">max_distance</span><span class="p">,</span> <span class="n">cache</span><span class="p">))</span> +</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a> <span class="n">to_exp</span><span class="p">,</span> <span class="n">from_exp</span> <span class="o">=</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">if</span> <span class="n">dnf</span> <span class="k">else</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">)</span> +</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a> +</span><span id="L-128"><a href="#L-128"><span class="linenos">128</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">from_exp</span><span class="p">):</span> +</span><span id="L-129"><a href="#L-129"><span class="linenos">129</span></a> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">()</span> +</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a> +</span><span id="L-131"><a href="#L-131"><span class="linenos">131</span></a> <span class="n">from_func</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span> <span class="k">if</span> <span class="n">from_exp</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span> +</span><span id="L-132"><a href="#L-132"><span class="linenos">132</span></a> <span class="n">to_func</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span> <span class="k">if</span> <span class="n">to_exp</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span> +</span><span id="L-133"><a href="#L-133"><span class="linenos">133</span></a> +</span><span id="L-134"><a href="#L-134"><span class="linenos">134</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">to_exp</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">to_exp</span><span class="p">):</span> +</span><span id="L-135"><a href="#L-135"><span class="linenos">135</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="nb">tuple</span><span class="p">(</span><span class="n">a</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">)))</span> <span class="o">></span> <span class="nb">len</span><span class="p">(</span><span class="nb">tuple</span><span class="p">(</span><span class="n">b</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">))):</span> +</span><span id="L-136"><a href="#L-136"><span class="linenos">136</span></a> <span class="k">return</span> <span class="n">_distribute</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">,</span> <span class="n">from_func</span><span class="p">,</span> <span class="n">to_func</span><span class="p">,</span> <span class="n">cache</span><span class="p">)</span> +</span><span id="L-137"><a href="#L-137"><span class="linenos">137</span></a> <span class="k">return</span> <span class="n">_distribute</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">from_func</span><span class="p">,</span> <span class="n">to_func</span><span class="p">,</span> <span class="n">cache</span><span class="p">)</span> +</span><span id="L-138"><a href="#L-138"><span class="linenos">138</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">to_exp</span><span class="p">):</span> +</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a> <span class="k">return</span> <span class="n">_distribute</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">from_func</span><span class="p">,</span> <span class="n">to_func</span><span class="p">,</span> <span class="n">cache</span><span class="p">)</span> +</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">to_exp</span><span class="p">):</span> +</span><span id="L-141"><a href="#L-141"><span class="linenos">141</span></a> <span class="k">return</span> <span class="n">_distribute</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">,</span> <span class="n">from_func</span><span class="p">,</span> <span class="n">to_func</span><span class="p">,</span> <span class="n">cache</span><span class="p">)</span> +</span><span id="L-142"><a href="#L-142"><span class="linenos">142</span></a> +</span><span id="L-143"><a href="#L-143"><span class="linenos">143</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-144"><a href="#L-144"><span class="linenos">144</span></a> +</span><span id="L-145"><a href="#L-145"><span class="linenos">145</span></a> +</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a><span class="k">def</span> <span class="nf">_distribute</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">,</span> <span class="n">from_func</span><span class="p">,</span> <span class="n">to_func</span><span class="p">,</span> <span class="n">cache</span><span class="p">):</span> +</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> +</span><span id="L-148"><a href="#L-148"><span class="linenos">148</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">replace_children</span><span class="p">(</span> +</span><span id="L-149"><a href="#L-149"><span class="linenos">149</span></a> <span class="n">a</span><span class="p">,</span> +</span><span id="L-150"><a href="#L-150"><span class="linenos">150</span></a> <span class="k">lambda</span> <span class="n">c</span><span class="p">:</span> <span class="n">to_func</span><span class="p">(</span> +</span><span id="L-151"><a href="#L-151"><span class="linenos">151</span></a> <span class="n">uniq_sort</span><span class="p">(</span><span class="n">flatten</span><span class="p">(</span><span class="n">from_func</span><span class="p">(</span><span class="n">c</span><span class="p">,</span> <span class="n">b</span><span class="o">.</span><span class="n">left</span><span class="p">)),</span> <span class="n">cache</span><span class="p">),</span> +</span><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a> <span class="n">uniq_sort</span><span class="p">(</span><span class="n">flatten</span><span class="p">(</span><span class="n">from_func</span><span class="p">(</span><span class="n">c</span><span class="p">,</span> <span class="n">b</span><span class="o">.</span><span class="n">right</span><span class="p">)),</span> <span class="n">cache</span><span class="p">),</span> +</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a> <span class="p">),</span> +</span><span id="L-154"><a href="#L-154"><span class="linenos">154</span></a> <span class="p">)</span> +</span><span id="L-155"><a href="#L-155"><span class="linenos">155</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-156"><a href="#L-156"><span class="linenos">156</span></a> <span class="n">a</span> <span class="o">=</span> <span class="n">to_func</span><span class="p">(</span> +</span><span id="L-157"><a href="#L-157"><span class="linenos">157</span></a> <span class="n">uniq_sort</span><span class="p">(</span><span class="n">flatten</span><span class="p">(</span><span class="n">from_func</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="o">.</span><span class="n">left</span><span class="p">)),</span> <span class="n">cache</span><span class="p">),</span> +</span><span id="L-158"><a href="#L-158"><span class="linenos">158</span></a> <span class="n">uniq_sort</span><span class="p">(</span><span class="n">flatten</span><span class="p">(</span><span class="n">from_func</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="o">.</span><span class="n">right</span><span class="p">)),</span> <span class="n">cache</span><span class="p">),</span> +</span><span id="L-159"><a href="#L-159"><span class="linenos">159</span></a> <span class="p">)</span> +</span><span id="L-160"><a href="#L-160"><span class="linenos">160</span></a> +</span><span id="L-161"><a href="#L-161"><span class="linenos">161</span></a> <span class="k">return</span> <span class="n">a</span> </span></pre></div> @@ -201,37 +235,63 @@ <div class="attr function"> <span class="def">def</span> - <span class="name">normalize</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span>, </span><span class="param"><span class="n">dnf</span><span class="o">=</span><span class="kc">False</span>, </span><span class="param"><span class="n">max_distance</span><span class="o">=</span><span class="mi">128</span></span><span class="return-annotation">):</span></span> + <span class="name">normalize</span><span class="signature pdoc-code multiline">(<span class="param"> <span class="n">expression</span><span class="p">:</span> <span class="n"><a href="../expressions.html#Expression">sqlglot.expressions.Expression</a></span>,</span><span class="param"> <span class="n">dnf</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span>,</span><span class="param"> <span class="n">max_distance</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">128</span></span><span class="return-annotation">):</span></span> <label class="view-source-button" for="normalize-view-source"><span>View Source</span></label> </div> <a class="headerlink" href="#normalize"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="normalize-7"><a href="#normalize-7"><span class="linenos"> 7</span></a><span class="k">def</span> <span class="nf">normalize</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">max_distance</span><span class="o">=</span><span class="mi">128</span><span class="p">):</span> -</span><span id="normalize-8"><a href="#normalize-8"><span class="linenos"> 8</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="normalize-9"><a href="#normalize-9"><span class="linenos"> 9</span></a><span class="sd"> Rewrite sqlglot AST into conjunctive normal form.</span> -</span><span id="normalize-10"><a href="#normalize-10"><span class="linenos">10</span></a> -</span><span id="normalize-11"><a href="#normalize-11"><span class="linenos">11</span></a><span class="sd"> Example:</span> -</span><span id="normalize-12"><a href="#normalize-12"><span class="linenos">12</span></a><span class="sd"> >>> import sqlglot</span> -</span><span id="normalize-13"><a href="#normalize-13"><span class="linenos">13</span></a><span class="sd"> >>> expression = sqlglot.parse_one("(x AND y) OR z")</span> -</span><span id="normalize-14"><a href="#normalize-14"><span class="linenos">14</span></a><span class="sd"> >>> normalize(expression).sql()</span> -</span><span id="normalize-15"><a href="#normalize-15"><span class="linenos">15</span></a><span class="sd"> '(x OR z) AND (y OR z)'</span> -</span><span id="normalize-16"><a href="#normalize-16"><span class="linenos">16</span></a> -</span><span id="normalize-17"><a href="#normalize-17"><span class="linenos">17</span></a><span class="sd"> Args:</span> -</span><span id="normalize-18"><a href="#normalize-18"><span class="linenos">18</span></a><span class="sd"> expression (sqlglot.Expression): expression to normalize</span> -</span><span id="normalize-19"><a href="#normalize-19"><span class="linenos">19</span></a><span class="sd"> dnf (bool): rewrite in disjunctive normal form instead</span> -</span><span id="normalize-20"><a href="#normalize-20"><span class="linenos">20</span></a><span class="sd"> max_distance (int): the maximal estimated distance from cnf to attempt conversion</span> -</span><span id="normalize-21"><a href="#normalize-21"><span class="linenos">21</span></a><span class="sd"> Returns:</span> -</span><span id="normalize-22"><a href="#normalize-22"><span class="linenos">22</span></a><span class="sd"> sqlglot.Expression: normalized expression</span> -</span><span id="normalize-23"><a href="#normalize-23"><span class="linenos">23</span></a><span class="sd"> """</span> -</span><span id="normalize-24"><a href="#normalize-24"><span class="linenos">24</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="normalize-25"><a href="#normalize-25"><span class="linenos">25</span></a> -</span><span id="normalize-26"><a href="#normalize-26"><span class="linenos">26</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">while_changing</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="k">lambda</span> <span class="n">e</span><span class="p">:</span> <span class="n">distributive_law</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="n">dnf</span><span class="p">,</span> <span class="n">max_distance</span><span class="p">))</span> -</span><span id="normalize-27"><a href="#normalize-27"><span class="linenos">27</span></a> <span class="k">return</span> <span class="n">simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="normalize-15"><a href="#normalize-15"><span class="linenos">15</span></a><span class="k">def</span> <span class="nf">normalize</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> <span class="n">dnf</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span><span class="p">,</span> <span class="n">max_distance</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">128</span><span class="p">):</span> +</span><span id="normalize-16"><a href="#normalize-16"><span class="linenos">16</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="normalize-17"><a href="#normalize-17"><span class="linenos">17</span></a><span class="sd"> Rewrite sqlglot AST into conjunctive normal form or disjunctive normal form.</span> +</span><span id="normalize-18"><a href="#normalize-18"><span class="linenos">18</span></a> +</span><span id="normalize-19"><a href="#normalize-19"><span class="linenos">19</span></a><span class="sd"> Example:</span> +</span><span id="normalize-20"><a href="#normalize-20"><span class="linenos">20</span></a><span class="sd"> >>> import sqlglot</span> +</span><span id="normalize-21"><a href="#normalize-21"><span class="linenos">21</span></a><span class="sd"> >>> expression = sqlglot.parse_one("(x AND y) OR z")</span> +</span><span id="normalize-22"><a href="#normalize-22"><span class="linenos">22</span></a><span class="sd"> >>> normalize(expression, dnf=False).sql()</span> +</span><span id="normalize-23"><a href="#normalize-23"><span class="linenos">23</span></a><span class="sd"> '(x OR z) AND (y OR z)'</span> +</span><span id="normalize-24"><a href="#normalize-24"><span class="linenos">24</span></a> +</span><span id="normalize-25"><a href="#normalize-25"><span class="linenos">25</span></a><span class="sd"> Args:</span> +</span><span id="normalize-26"><a href="#normalize-26"><span class="linenos">26</span></a><span class="sd"> expression: expression to normalize</span> +</span><span id="normalize-27"><a href="#normalize-27"><span class="linenos">27</span></a><span class="sd"> dnf: rewrite in disjunctive normal form instead.</span> +</span><span id="normalize-28"><a href="#normalize-28"><span class="linenos">28</span></a><span class="sd"> max_distance (int): the maximal estimated distance from cnf/dnf to attempt conversion</span> +</span><span id="normalize-29"><a href="#normalize-29"><span class="linenos">29</span></a><span class="sd"> Returns:</span> +</span><span id="normalize-30"><a href="#normalize-30"><span class="linenos">30</span></a><span class="sd"> sqlglot.Expression: normalized expression</span> +</span><span id="normalize-31"><a href="#normalize-31"><span class="linenos">31</span></a><span class="sd"> """</span> +</span><span id="normalize-32"><a href="#normalize-32"><span class="linenos">32</span></a> <span class="n">cache</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">int</span><span class="p">,</span> <span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="normalize-33"><a href="#normalize-33"><span class="linenos">33</span></a> +</span><span id="normalize-34"><a href="#normalize-34"><span class="linenos">34</span></a> <span class="k">for</span> <span class="n">node</span><span class="p">,</span> <span class="o">*</span><span class="n">_</span> <span class="ow">in</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">walk</span><span class="p">(</span><span class="n">prune</span><span class="o">=</span><span class="k">lambda</span> <span class="n">e</span><span class="p">,</span> <span class="o">*</span><span class="n">_</span><span class="p">:</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">))):</span> +</span><span id="normalize-35"><a href="#normalize-35"><span class="linenos">35</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> +</span><span id="normalize-36"><a href="#normalize-36"><span class="linenos">36</span></a> <span class="k">if</span> <span class="n">normalized</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">dnf</span><span class="o">=</span><span class="n">dnf</span><span class="p">):</span> +</span><span id="normalize-37"><a href="#normalize-37"><span class="linenos">37</span></a> <span class="k">continue</span> +</span><span id="normalize-38"><a href="#normalize-38"><span class="linenos">38</span></a> +</span><span id="normalize-39"><a href="#normalize-39"><span class="linenos">39</span></a> <span class="n">distance</span> <span class="o">=</span> <span class="n">normalization_distance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">dnf</span><span class="o">=</span><span class="n">dnf</span><span class="p">)</span> +</span><span id="normalize-40"><a href="#normalize-40"><span class="linenos">40</span></a> +</span><span id="normalize-41"><a href="#normalize-41"><span class="linenos">41</span></a> <span class="k">if</span> <span class="n">distance</span> <span class="o">></span> <span class="n">max_distance</span><span class="p">:</span> +</span><span id="normalize-42"><a href="#normalize-42"><span class="linenos">42</span></a> <span class="n">logger</span><span class="o">.</span><span class="n">info</span><span class="p">(</span> +</span><span id="normalize-43"><a href="#normalize-43"><span class="linenos">43</span></a> <span class="sa">f</span><span class="s2">"Skipping normalization because distance </span><span class="si">{</span><span class="n">distance</span><span class="si">}</span><span class="s2"> exceeds max </span><span class="si">{</span><span class="n">max_distance</span><span class="si">}</span><span class="s2">"</span> +</span><span id="normalize-44"><a href="#normalize-44"><span class="linenos">44</span></a> <span class="p">)</span> +</span><span id="normalize-45"><a href="#normalize-45"><span class="linenos">45</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="normalize-46"><a href="#normalize-46"><span class="linenos">46</span></a> +</span><span id="normalize-47"><a href="#normalize-47"><span class="linenos">47</span></a> <span class="n">root</span> <span class="o">=</span> <span class="n">node</span> <span class="ow">is</span> <span class="n">expression</span> +</span><span id="normalize-48"><a href="#normalize-48"><span class="linenos">48</span></a> <span class="n">original</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">copy</span><span class="p">()</span> +</span><span id="normalize-49"><a href="#normalize-49"><span class="linenos">49</span></a> <span class="k">try</span><span class="p">:</span> +</span><span id="normalize-50"><a href="#normalize-50"><span class="linenos">50</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">while_changing</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="k">lambda</span> <span class="n">e</span><span class="p">:</span> <span class="n">distributive_law</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="n">dnf</span><span class="p">,</span> <span class="n">max_distance</span><span class="p">,</span> <span class="n">cache</span><span class="p">))</span> +</span><span id="normalize-51"><a href="#normalize-51"><span class="linenos">51</span></a> <span class="k">except</span> <span class="n">OptimizeError</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span> +</span><span id="normalize-52"><a href="#normalize-52"><span class="linenos">52</span></a> <span class="n">logger</span><span class="o">.</span><span class="n">info</span><span class="p">(</span><span class="n">e</span><span class="p">)</span> +</span><span id="normalize-53"><a href="#normalize-53"><span class="linenos">53</span></a> <span class="n">node</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">original</span><span class="p">)</span> +</span><span id="normalize-54"><a href="#normalize-54"><span class="linenos">54</span></a> <span class="k">if</span> <span class="n">root</span><span class="p">:</span> +</span><span id="normalize-55"><a href="#normalize-55"><span class="linenos">55</span></a> <span class="k">return</span> <span class="n">original</span> +</span><span id="normalize-56"><a href="#normalize-56"><span class="linenos">56</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="normalize-57"><a href="#normalize-57"><span class="linenos">57</span></a> +</span><span id="normalize-58"><a href="#normalize-58"><span class="linenos">58</span></a> <span class="k">if</span> <span class="n">root</span><span class="p">:</span> +</span><span id="normalize-59"><a href="#normalize-59"><span class="linenos">59</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">node</span> +</span><span id="normalize-60"><a href="#normalize-60"><span class="linenos">60</span></a> +</span><span id="normalize-61"><a href="#normalize-61"><span class="linenos">61</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> - <div class="docstring"><p>Rewrite sqlglot AST into conjunctive normal form.</p> + <div class="docstring"><p>Rewrite sqlglot AST into conjunctive normal form or disjunctive normal form.</p> <h6 id="example">Example:</h6> @@ -239,7 +299,7 @@ <div class="pdoc-code codehilite"> <pre><span></span><code><span class="gp">>>> </span><span class="kn">import</span> <span class="nn">sqlglot</span> <span class="gp">>>> </span><span class="n">expression</span> <span class="o">=</span> <span class="n"><a href="../../sqlglot.html#parse_one">sqlglot.parse_one</a></span><span class="p">(</span><span class="s2">"(x AND y) OR z"</span><span class="p">)</span> -<span class="gp">>>> </span><span class="n">normalize</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span> +<span class="gp">>>> </span><span class="n">normalize</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span> <span class="go">'(x OR z) AND (y OR z)'</span> </code></pre> </div> @@ -248,9 +308,9 @@ <h6 id="arguments">Arguments:</h6> <ul> -<li><strong>expression (sqlglot.Expression):</strong> expression to normalize</li> -<li><strong>dnf (bool):</strong> rewrite in disjunctive normal form instead</li> -<li><strong>max_distance (int):</strong> the maximal estimated distance from cnf to attempt conversion</li> +<li><strong>expression:</strong> expression to normalize</li> +<li><strong>dnf:</strong> rewrite in disjunctive normal form instead.</li> +<li><strong>max_distance (int):</strong> the maximal estimated distance from cnf/dnf to attempt conversion</li> </ul> <h6 id="returns">Returns:</h6> @@ -273,10 +333,10 @@ </div> <a class="headerlink" href="#normalized"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="normalized-30"><a href="#normalized-30"><span class="linenos">30</span></a><span class="k">def</span> <span class="nf">normalized</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> -</span><span id="normalized-31"><a href="#normalized-31"><span class="linenos">31</span></a> <span class="n">ancestor</span><span class="p">,</span> <span class="n">root</span> <span class="o">=</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">)</span> <span class="k">if</span> <span class="n">dnf</span> <span class="k">else</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> -</span><span id="normalized-32"><a href="#normalized-32"><span class="linenos">32</span></a> -</span><span id="normalized-33"><a href="#normalized-33"><span class="linenos">33</span></a> <span class="k">return</span> <span class="ow">not</span> <span class="nb">any</span><span class="p">(</span><span class="n">connector</span><span class="o">.</span><span class="n">find_ancestor</span><span class="p">(</span><span class="n">ancestor</span><span class="p">)</span> <span class="k">for</span> <span class="n">connector</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">root</span><span class="p">))</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="normalized-64"><a href="#normalized-64"><span class="linenos">64</span></a><span class="k">def</span> <span class="nf">normalized</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> +</span><span id="normalized-65"><a href="#normalized-65"><span class="linenos">65</span></a> <span class="n">ancestor</span><span class="p">,</span> <span class="n">root</span> <span class="o">=</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">)</span> <span class="k">if</span> <span class="n">dnf</span> <span class="k">else</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> +</span><span id="normalized-66"><a href="#normalized-66"><span class="linenos">66</span></a> +</span><span id="normalized-67"><a href="#normalized-67"><span class="linenos">67</span></a> <span class="k">return</span> <span class="ow">not</span> <span class="nb">any</span><span class="p">(</span><span class="n">connector</span><span class="o">.</span><span class="n">find_ancestor</span><span class="p">(</span><span class="n">ancestor</span><span class="p">)</span> <span class="k">for</span> <span class="n">connector</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">root</span><span class="p">))</span> </span></pre></div> @@ -294,27 +354,27 @@ </div> <a class="headerlink" href="#normalization_distance"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="normalization_distance-36"><a href="#normalization_distance-36"><span class="linenos">36</span></a><span class="k">def</span> <span class="nf">normalization_distance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> -</span><span id="normalization_distance-37"><a href="#normalization_distance-37"><span class="linenos">37</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="normalization_distance-38"><a href="#normalization_distance-38"><span class="linenos">38</span></a><span class="sd"> The difference in the number of predicates between the current expression and the normalized form.</span> -</span><span id="normalization_distance-39"><a href="#normalization_distance-39"><span class="linenos">39</span></a> -</span><span id="normalization_distance-40"><a href="#normalization_distance-40"><span class="linenos">40</span></a><span class="sd"> This is used as an estimate of the cost of the conversion which is exponential in complexity.</span> -</span><span id="normalization_distance-41"><a href="#normalization_distance-41"><span class="linenos">41</span></a> -</span><span id="normalization_distance-42"><a href="#normalization_distance-42"><span class="linenos">42</span></a><span class="sd"> Example:</span> -</span><span id="normalization_distance-43"><a href="#normalization_distance-43"><span class="linenos">43</span></a><span class="sd"> >>> import sqlglot</span> -</span><span id="normalization_distance-44"><a href="#normalization_distance-44"><span class="linenos">44</span></a><span class="sd"> >>> expression = sqlglot.parse_one("(a AND b) OR (c AND d)")</span> -</span><span id="normalization_distance-45"><a href="#normalization_distance-45"><span class="linenos">45</span></a><span class="sd"> >>> normalization_distance(expression)</span> -</span><span id="normalization_distance-46"><a href="#normalization_distance-46"><span class="linenos">46</span></a><span class="sd"> 4</span> -</span><span id="normalization_distance-47"><a href="#normalization_distance-47"><span class="linenos">47</span></a> -</span><span id="normalization_distance-48"><a href="#normalization_distance-48"><span class="linenos">48</span></a><span class="sd"> Args:</span> -</span><span id="normalization_distance-49"><a href="#normalization_distance-49"><span class="linenos">49</span></a><span class="sd"> expression (sqlglot.Expression): expression to compute distance</span> -</span><span id="normalization_distance-50"><a href="#normalization_distance-50"><span class="linenos">50</span></a><span class="sd"> dnf (bool): compute to dnf distance instead</span> -</span><span id="normalization_distance-51"><a href="#normalization_distance-51"><span class="linenos">51</span></a><span class="sd"> Returns:</span> -</span><span id="normalization_distance-52"><a href="#normalization_distance-52"><span class="linenos">52</span></a><span class="sd"> int: difference</span> -</span><span id="normalization_distance-53"><a href="#normalization_distance-53"><span class="linenos">53</span></a><span class="sd"> """</span> -</span><span id="normalization_distance-54"><a href="#normalization_distance-54"><span class="linenos">54</span></a> <span class="k">return</span> <span class="nb">sum</span><span class="p">(</span><span class="n">_predicate_lengths</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="p">))</span> <span class="o">-</span> <span class="p">(</span> -</span><span id="normalization_distance-55"><a href="#normalization_distance-55"><span class="linenos">55</span></a> <span class="nb">len</span><span class="p">(</span><span class="nb">list</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">)))</span> <span class="o">+</span> <span class="mi">1</span> -</span><span id="normalization_distance-56"><a href="#normalization_distance-56"><span class="linenos">56</span></a> <span class="p">)</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="normalization_distance-70"><a href="#normalization_distance-70"><span class="linenos">70</span></a><span class="k">def</span> <span class="nf">normalization_distance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> +</span><span id="normalization_distance-71"><a href="#normalization_distance-71"><span class="linenos">71</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="normalization_distance-72"><a href="#normalization_distance-72"><span class="linenos">72</span></a><span class="sd"> The difference in the number of predicates between the current expression and the normalized form.</span> +</span><span id="normalization_distance-73"><a href="#normalization_distance-73"><span class="linenos">73</span></a> +</span><span id="normalization_distance-74"><a href="#normalization_distance-74"><span class="linenos">74</span></a><span class="sd"> This is used as an estimate of the cost of the conversion which is exponential in complexity.</span> +</span><span id="normalization_distance-75"><a href="#normalization_distance-75"><span class="linenos">75</span></a> +</span><span id="normalization_distance-76"><a href="#normalization_distance-76"><span class="linenos">76</span></a><span class="sd"> Example:</span> +</span><span id="normalization_distance-77"><a href="#normalization_distance-77"><span class="linenos">77</span></a><span class="sd"> >>> import sqlglot</span> +</span><span id="normalization_distance-78"><a href="#normalization_distance-78"><span class="linenos">78</span></a><span class="sd"> >>> expression = sqlglot.parse_one("(a AND b) OR (c AND d)")</span> +</span><span id="normalization_distance-79"><a href="#normalization_distance-79"><span class="linenos">79</span></a><span class="sd"> >>> normalization_distance(expression)</span> +</span><span id="normalization_distance-80"><a href="#normalization_distance-80"><span class="linenos">80</span></a><span class="sd"> 4</span> +</span><span id="normalization_distance-81"><a href="#normalization_distance-81"><span class="linenos">81</span></a> +</span><span id="normalization_distance-82"><a href="#normalization_distance-82"><span class="linenos">82</span></a><span class="sd"> Args:</span> +</span><span id="normalization_distance-83"><a href="#normalization_distance-83"><span class="linenos">83</span></a><span class="sd"> expression (sqlglot.Expression): expression to compute distance</span> +</span><span id="normalization_distance-84"><a href="#normalization_distance-84"><span class="linenos">84</span></a><span class="sd"> dnf (bool): compute to dnf distance instead</span> +</span><span id="normalization_distance-85"><a href="#normalization_distance-85"><span class="linenos">85</span></a><span class="sd"> Returns:</span> +</span><span id="normalization_distance-86"><a href="#normalization_distance-86"><span class="linenos">86</span></a><span class="sd"> int: difference</span> +</span><span id="normalization_distance-87"><a href="#normalization_distance-87"><span class="linenos">87</span></a><span class="sd"> """</span> +</span><span id="normalization_distance-88"><a href="#normalization_distance-88"><span class="linenos">88</span></a> <span class="k">return</span> <span class="nb">sum</span><span class="p">(</span><span class="n">_predicate_lengths</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="p">))</span> <span class="o">-</span> <span class="p">(</span> +</span><span id="normalization_distance-89"><a href="#normalization_distance-89"><span class="linenos">89</span></a> <span class="nb">sum</span><span class="p">(</span><span class="mi">1</span> <span class="k">for</span> <span class="n">_</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">))</span> <span class="o">+</span> <span class="mi">1</span> +</span><span id="normalization_distance-90"><a href="#normalization_distance-90"><span class="linenos">90</span></a> <span class="p">)</span> </span></pre></div> @@ -355,41 +415,44 @@ <div class="attr function"> <span class="def">def</span> - <span class="name">distributive_law</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span>, </span><span class="param"><span class="n">dnf</span>, </span><span class="param"><span class="n">max_distance</span></span><span class="return-annotation">):</span></span> + <span class="name">distributive_law</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span>, </span><span class="param"><span class="n">dnf</span>, </span><span class="param"><span class="n">max_distance</span>, </span><span class="param"><span class="n">cache</span><span class="o">=</span><span class="kc">None</span></span><span class="return-annotation">):</span></span> <label class="view-source-button" for="distributive_law-view-source"><span>View Source</span></label> </div> <a class="headerlink" href="#distributive_law"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="distributive_law-79"><a href="#distributive_law-79"><span class="linenos"> 79</span></a><span class="k">def</span> <span class="nf">distributive_law</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="p">,</span> <span class="n">max_distance</span><span class="p">):</span> -</span><span id="distributive_law-80"><a href="#distributive_law-80"><span class="linenos"> 80</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="distributive_law-81"><a href="#distributive_law-81"><span class="linenos"> 81</span></a><span class="sd"> x OR (y AND z) -> (x OR y) AND (x OR z)</span> -</span><span id="distributive_law-82"><a href="#distributive_law-82"><span class="linenos"> 82</span></a><span class="sd"> (x AND y) OR (y AND z) -> (x OR y) AND (x OR z) AND (y OR y) AND (y OR z)</span> -</span><span id="distributive_law-83"><a href="#distributive_law-83"><span class="linenos"> 83</span></a><span class="sd"> """</span> -</span><span id="distributive_law-84"><a href="#distributive_law-84"><span class="linenos"> 84</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">unnest</span><span class="p">(),</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> -</span><span id="distributive_law-85"><a href="#distributive_law-85"><span class="linenos"> 85</span></a> <span class="k">if</span> <span class="n">normalization_distance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="p">)</span> <span class="o">></span> <span class="n">max_distance</span><span class="p">:</span> -</span><span id="distributive_law-86"><a href="#distributive_law-86"><span class="linenos"> 86</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="distributive_law-87"><a href="#distributive_law-87"><span class="linenos"> 87</span></a> -</span><span id="distributive_law-88"><a href="#distributive_law-88"><span class="linenos"> 88</span></a> <span class="n">to_exp</span><span class="p">,</span> <span class="n">from_exp</span> <span class="o">=</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">if</span> <span class="n">dnf</span> <span class="k">else</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">)</span> -</span><span id="distributive_law-89"><a href="#distributive_law-89"><span class="linenos"> 89</span></a> -</span><span id="distributive_law-90"><a href="#distributive_law-90"><span class="linenos"> 90</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">replace_children</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="k">lambda</span> <span class="n">e</span><span class="p">:</span> <span class="n">distributive_law</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="n">dnf</span><span class="p">,</span> <span class="n">max_distance</span><span class="p">))</span> -</span><span id="distributive_law-91"><a href="#distributive_law-91"><span class="linenos"> 91</span></a> -</span><span id="distributive_law-92"><a href="#distributive_law-92"><span class="linenos"> 92</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">from_exp</span><span class="p">):</span> -</span><span id="distributive_law-93"><a href="#distributive_law-93"><span class="linenos"> 93</span></a> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">()</span> -</span><span id="distributive_law-94"><a href="#distributive_law-94"><span class="linenos"> 94</span></a> -</span><span id="distributive_law-95"><a href="#distributive_law-95"><span class="linenos"> 95</span></a> <span class="n">from_func</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span> <span class="k">if</span> <span class="n">from_exp</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span> -</span><span id="distributive_law-96"><a href="#distributive_law-96"><span class="linenos"> 96</span></a> <span class="n">to_func</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span> <span class="k">if</span> <span class="n">to_exp</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span> -</span><span id="distributive_law-97"><a href="#distributive_law-97"><span class="linenos"> 97</span></a> -</span><span id="distributive_law-98"><a href="#distributive_law-98"><span class="linenos"> 98</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">to_exp</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">to_exp</span><span class="p">):</span> -</span><span id="distributive_law-99"><a href="#distributive_law-99"><span class="linenos"> 99</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="nb">tuple</span><span class="p">(</span><span class="n">a</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">)))</span> <span class="o">></span> <span class="nb">len</span><span class="p">(</span><span class="nb">tuple</span><span class="p">(</span><span class="n">b</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">))):</span> -</span><span id="distributive_law-100"><a href="#distributive_law-100"><span class="linenos">100</span></a> <span class="k">return</span> <span class="n">_distribute</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">,</span> <span class="n">from_func</span><span class="p">,</span> <span class="n">to_func</span><span class="p">)</span> -</span><span id="distributive_law-101"><a href="#distributive_law-101"><span class="linenos">101</span></a> <span class="k">return</span> <span class="n">_distribute</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">from_func</span><span class="p">,</span> <span class="n">to_func</span><span class="p">)</span> -</span><span id="distributive_law-102"><a href="#distributive_law-102"><span class="linenos">102</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">to_exp</span><span class="p">):</span> -</span><span id="distributive_law-103"><a href="#distributive_law-103"><span class="linenos">103</span></a> <span class="k">return</span> <span class="n">_distribute</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">from_func</span><span class="p">,</span> <span class="n">to_func</span><span class="p">)</span> -</span><span id="distributive_law-104"><a href="#distributive_law-104"><span class="linenos">104</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">to_exp</span><span class="p">):</span> -</span><span id="distributive_law-105"><a href="#distributive_law-105"><span class="linenos">105</span></a> <span class="k">return</span> <span class="n">_distribute</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">,</span> <span class="n">from_func</span><span class="p">,</span> <span class="n">to_func</span><span class="p">)</span> -</span><span id="distributive_law-106"><a href="#distributive_law-106"><span class="linenos">106</span></a> -</span><span id="distributive_law-107"><a href="#distributive_law-107"><span class="linenos">107</span></a> <span class="k">return</span> <span class="n">expression</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="distributive_law-113"><a href="#distributive_law-113"><span class="linenos">113</span></a><span class="k">def</span> <span class="nf">distributive_law</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="p">,</span> <span class="n">max_distance</span><span class="p">,</span> <span class="n">cache</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> +</span><span id="distributive_law-114"><a href="#distributive_law-114"><span class="linenos">114</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="distributive_law-115"><a href="#distributive_law-115"><span class="linenos">115</span></a><span class="sd"> x OR (y AND z) -> (x OR y) AND (x OR z)</span> +</span><span id="distributive_law-116"><a href="#distributive_law-116"><span class="linenos">116</span></a><span class="sd"> (x AND y) OR (y AND z) -> (x OR y) AND (x OR z) AND (y OR y) AND (y OR z)</span> +</span><span id="distributive_law-117"><a href="#distributive_law-117"><span class="linenos">117</span></a><span class="sd"> """</span> +</span><span id="distributive_law-118"><a href="#distributive_law-118"><span class="linenos">118</span></a> <span class="k">if</span> <span class="n">normalized</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="o">=</span><span class="n">dnf</span><span class="p">):</span> +</span><span id="distributive_law-119"><a href="#distributive_law-119"><span class="linenos">119</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="distributive_law-120"><a href="#distributive_law-120"><span class="linenos">120</span></a> +</span><span id="distributive_law-121"><a href="#distributive_law-121"><span class="linenos">121</span></a> <span class="n">distance</span> <span class="o">=</span> <span class="n">normalization_distance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dnf</span><span class="o">=</span><span class="n">dnf</span><span class="p">)</span> +</span><span id="distributive_law-122"><a href="#distributive_law-122"><span class="linenos">122</span></a> +</span><span id="distributive_law-123"><a href="#distributive_law-123"><span class="linenos">123</span></a> <span class="k">if</span> <span class="n">distance</span> <span class="o">></span> <span class="n">max_distance</span><span class="p">:</span> +</span><span id="distributive_law-124"><a href="#distributive_law-124"><span class="linenos">124</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Normalization distance </span><span class="si">{</span><span class="n">distance</span><span class="si">}</span><span class="s2"> exceeds max </span><span class="si">{</span><span class="n">max_distance</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="distributive_law-125"><a href="#distributive_law-125"><span class="linenos">125</span></a> +</span><span id="distributive_law-126"><a href="#distributive_law-126"><span class="linenos">126</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">replace_children</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="k">lambda</span> <span class="n">e</span><span class="p">:</span> <span class="n">distributive_law</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="n">dnf</span><span class="p">,</span> <span class="n">max_distance</span><span class="p">,</span> <span class="n">cache</span><span class="p">))</span> +</span><span id="distributive_law-127"><a href="#distributive_law-127"><span class="linenos">127</span></a> <span class="n">to_exp</span><span class="p">,</span> <span class="n">from_exp</span> <span class="o">=</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">if</span> <span class="n">dnf</span> <span class="k">else</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">)</span> +</span><span id="distributive_law-128"><a href="#distributive_law-128"><span class="linenos">128</span></a> +</span><span id="distributive_law-129"><a href="#distributive_law-129"><span class="linenos">129</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">from_exp</span><span class="p">):</span> +</span><span id="distributive_law-130"><a href="#distributive_law-130"><span class="linenos">130</span></a> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">()</span> +</span><span id="distributive_law-131"><a href="#distributive_law-131"><span class="linenos">131</span></a> +</span><span id="distributive_law-132"><a href="#distributive_law-132"><span class="linenos">132</span></a> <span class="n">from_func</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span> <span class="k">if</span> <span class="n">from_exp</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span> +</span><span id="distributive_law-133"><a href="#distributive_law-133"><span class="linenos">133</span></a> <span class="n">to_func</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span> <span class="k">if</span> <span class="n">to_exp</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span> +</span><span id="distributive_law-134"><a href="#distributive_law-134"><span class="linenos">134</span></a> +</span><span id="distributive_law-135"><a href="#distributive_law-135"><span class="linenos">135</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">to_exp</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">to_exp</span><span class="p">):</span> +</span><span id="distributive_law-136"><a href="#distributive_law-136"><span class="linenos">136</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="nb">tuple</span><span class="p">(</span><span class="n">a</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">)))</span> <span class="o">></span> <span class="nb">len</span><span class="p">(</span><span class="nb">tuple</span><span class="p">(</span><span class="n">b</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">))):</span> +</span><span id="distributive_law-137"><a href="#distributive_law-137"><span class="linenos">137</span></a> <span class="k">return</span> <span class="n">_distribute</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">,</span> <span class="n">from_func</span><span class="p">,</span> <span class="n">to_func</span><span class="p">,</span> <span class="n">cache</span><span class="p">)</span> +</span><span id="distributive_law-138"><a href="#distributive_law-138"><span class="linenos">138</span></a> <span class="k">return</span> <span class="n">_distribute</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">from_func</span><span class="p">,</span> <span class="n">to_func</span><span class="p">,</span> <span class="n">cache</span><span class="p">)</span> +</span><span id="distributive_law-139"><a href="#distributive_law-139"><span class="linenos">139</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">to_exp</span><span class="p">):</span> +</span><span id="distributive_law-140"><a href="#distributive_law-140"><span class="linenos">140</span></a> <span class="k">return</span> <span class="n">_distribute</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">from_func</span><span class="p">,</span> <span class="n">to_func</span><span class="p">,</span> <span class="n">cache</span><span class="p">)</span> +</span><span id="distributive_law-141"><a href="#distributive_law-141"><span class="linenos">141</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">to_exp</span><span class="p">):</span> +</span><span id="distributive_law-142"><a href="#distributive_law-142"><span class="linenos">142</span></a> <span class="k">return</span> <span class="n">_distribute</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">,</span> <span class="n">from_func</span><span class="p">,</span> <span class="n">to_func</span><span class="p">,</span> <span class="n">cache</span><span class="p">)</span> +</span><span id="distributive_law-143"><a href="#distributive_law-143"><span class="linenos">143</span></a> +</span><span id="distributive_law-144"><a href="#distributive_law-144"><span class="linenos">144</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> diff --git a/docs/sqlglot/optimizer/optimize_joins.html b/docs/sqlglot/optimizer/optimize_joins.html index e6d246d..0e77efe 100644 --- a/docs/sqlglot/optimizer/optimize_joins.html +++ b/docs/sqlglot/optimizer/optimize_joins.html @@ -3,7 +3,7 @@ <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> - <meta name="generator" content="pdoc 13.0.0"/> + <meta name="generator" content="pdoc 13.0.1"/> <title>sqlglot.optimizer.optimize_joins API documentation</title> <style>/*! * Bootstrap Reboot v5.0.0 (https://getbootstrap.com/) * Copyright 2011-2021 The Bootstrap Authors * Copyright 2011-2021 Twitter, Inc. * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE) * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md) */*,::after,::before{box-sizing:border-box}@media (prefers-reduced-motion:no-preference){:root{scroll-behavior:smooth}}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","Liberation Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color 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1rem}img,svg{vertical-align:middle}table{caption-side:bottom;border-collapse:collapse}caption{padding-top:.5rem;padding-bottom:.5rem;color:#6c757d;text-align:left}th{text-align:inherit;text-align:-webkit-match-parent}tbody,td,tfoot,th,thead,tr{border-color:inherit;border-style:solid;border-width:0}label{display:inline-block}button{border-radius:0}button:focus:not(:focus-visible){outline:0}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,select{text-transform:none}[role=button]{cursor:pointer}select{word-wrap:normal}select:disabled{opacity:1}[list]::-webkit-calendar-picker-indicator{display:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]:not(:disabled),[type=reset]:not(:disabled),[type=submit]:not(:disabled),button:not(:disabled){cursor:pointer}::-moz-focus-inner{padding:0;border-style:none}textarea{resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{float:left;width:100%;padding:0;margin-bottom:.5rem;font-size:calc(1.275rem + .3vw);line-height:inherit}@media (min-width:1200px){legend{font-size:1.5rem}}legend+*{clear:left}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-fields-wrapper,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-text,::-webkit-datetime-edit-year-field{padding:0}::-webkit-inner-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:textfield}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-color-swatch-wrapper{padding:0}::file-selector-button{font:inherit}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}iframe{border:0}summary{display:list-item;cursor:pointer}progress{vertical-align:baseline}[hidden]{display:none!important}</style> @@ -28,8 +28,8 @@ - <h2>API Documentation</h2> - <ul class="memberlist"> + <h2>API Documentation</h2> + <ul class="memberlist"> <li> <a class="function" href="#optimize_joins">optimize_joins</a> </li> @@ -67,84 +67,82 @@ <div class="pdoc-code codehilite"><pre><span></span><span id="L-1"><a href="#L-1"><span class="linenos"> 1</span></a><span class="kn">from</span> <span class="nn">sqlglot</span> <span class="kn">import</span> <span class="n">exp</span> </span><span id="L-2"><a href="#L-2"><span class="linenos"> 2</span></a><span class="kn">from</span> <span class="nn">sqlglot.helper</span> <span class="kn">import</span> <span class="n">tsort</span> -</span><span id="L-3"><a href="#L-3"><span class="linenos"> 3</span></a><span class="kn">from</span> <span class="nn">sqlglot.optimizer.simplify</span> <span class="kn">import</span> <span class="n">simplify</span> +</span><span id="L-3"><a href="#L-3"><span class="linenos"> 3</span></a> </span><span id="L-4"><a href="#L-4"><span class="linenos"> 4</span></a> -</span><span id="L-5"><a href="#L-5"><span class="linenos"> 5</span></a> -</span><span id="L-6"><a href="#L-6"><span class="linenos"> 6</span></a><span class="k">def</span> <span class="nf">optimize_joins</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-7"><a href="#L-7"><span class="linenos"> 7</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-8"><a href="#L-8"><span class="linenos"> 8</span></a><span class="sd"> Removes cross joins if possible and reorder joins based on predicate dependencies.</span> -</span><span id="L-9"><a href="#L-9"><span class="linenos"> 9</span></a> -</span><span id="L-10"><a href="#L-10"><span class="linenos">10</span></a><span class="sd"> Example:</span> -</span><span id="L-11"><a href="#L-11"><span class="linenos">11</span></a><span class="sd"> >>> from sqlglot import parse_one</span> -</span><span id="L-12"><a href="#L-12"><span class="linenos">12</span></a><span class="sd"> >>> optimize_joins(parse_one("SELECT * FROM x CROSS JOIN y JOIN z ON x.a = z.a AND y.a = z.a")).sql()</span> -</span><span id="L-13"><a href="#L-13"><span class="linenos">13</span></a><span class="sd"> 'SELECT * FROM x JOIN z ON x.a = z.a AND TRUE JOIN y ON y.a = z.a'</span> -</span><span id="L-14"><a href="#L-14"><span class="linenos">14</span></a><span class="sd"> """</span> -</span><span id="L-15"><a href="#L-15"><span class="linenos">15</span></a> <span class="k">for</span> <span class="n">select</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> -</span><span id="L-16"><a href="#L-16"><span class="linenos">16</span></a> <span class="n">references</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="L-17"><a href="#L-17"><span class="linenos">17</span></a> <span class="n">cross_joins</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-18"><a href="#L-18"><span class="linenos">18</span></a> -</span><span id="L-19"><a href="#L-19"><span class="linenos">19</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">select</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="p">[]):</span> -</span><span id="L-20"><a href="#L-20"><span class="linenos">20</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">alias_or_name</span> -</span><span id="L-21"><a href="#L-21"><span class="linenos">21</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="n">other_table_names</span><span class="p">(</span><span class="n">join</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span> -</span><span id="L-22"><a href="#L-22"><span class="linenos">22</span></a> -</span><span id="L-23"><a href="#L-23"><span class="linenos">23</span></a> <span class="k">if</span> <span class="n">tables</span><span class="p">:</span> -</span><span id="L-24"><a href="#L-24"><span class="linenos">24</span></a> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> -</span><span id="L-25"><a href="#L-25"><span class="linenos">25</span></a> <span class="n">references</span><span class="p">[</span><span class="n">table</span><span class="p">]</span> <span class="o">=</span> <span class="n">references</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table</span><span class="p">,</span> <span class="p">[])</span> <span class="o">+</span> <span class="p">[</span><span class="n">join</span><span class="p">]</span> -</span><span id="L-26"><a href="#L-26"><span class="linenos">26</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-27"><a href="#L-27"><span class="linenos">27</span></a> <span class="n">cross_joins</span><span class="o">.</span><span class="n">append</span><span class="p">((</span><span class="n">name</span><span class="p">,</span> <span class="n">join</span><span class="p">))</span> -</span><span id="L-28"><a href="#L-28"><span class="linenos">28</span></a> -</span><span id="L-29"><a href="#L-29"><span class="linenos">29</span></a> <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">cross_joins</span><span class="p">:</span> -</span><span id="L-30"><a href="#L-30"><span class="linenos">30</span></a> <span class="k">for</span> <span class="n">dep</span> <span class="ow">in</span> <span class="n">references</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="p">[]):</span> -</span><span id="L-31"><a href="#L-31"><span class="linenos">31</span></a> <span class="n">on</span> <span class="o">=</span> <span class="n">dep</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"on"</span><span class="p">]</span> -</span><span id="L-32"><a href="#L-32"><span class="linenos">32</span></a> <span class="n">on</span> <span class="o">=</span> <span class="n">on</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">simplify</span><span class="p">(</span><span class="n">on</span><span class="p">))</span> -</span><span id="L-33"><a href="#L-33"><span class="linenos">33</span></a> -</span><span id="L-34"><a href="#L-34"><span class="linenos">34</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">on</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> -</span><span id="L-35"><a href="#L-35"><span class="linenos">35</span></a> <span class="k">for</span> <span class="n">predicate</span> <span class="ow">in</span> <span class="n">on</span><span class="o">.</span><span class="n">flatten</span><span class="p">():</span> -</span><span id="L-36"><a href="#L-36"><span class="linenos">36</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">exp</span><span class="o">.</span><span class="n">column_table_names</span><span class="p">(</span><span class="n">predicate</span><span class="p">):</span> -</span><span id="L-37"><a href="#L-37"><span class="linenos">37</span></a> <span class="n">predicate</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span> -</span><span id="L-38"><a href="#L-38"><span class="linenos">38</span></a> <span class="n">join</span><span class="o">.</span><span class="n">on</span><span class="p">(</span><span class="n">predicate</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> -</span><span id="L-39"><a href="#L-39"><span class="linenos">39</span></a> -</span><span id="L-40"><a href="#L-40"><span class="linenos">40</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">reorder_joins</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-41"><a href="#L-41"><span class="linenos">41</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">normalize</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-42"><a href="#L-42"><span class="linenos">42</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-43"><a href="#L-43"><span class="linenos">43</span></a> -</span><span id="L-44"><a href="#L-44"><span class="linenos">44</span></a> -</span><span id="L-45"><a href="#L-45"><span class="linenos">45</span></a><span class="k">def</span> <span class="nf">reorder_joins</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-46"><a href="#L-46"><span class="linenos">46</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-47"><a href="#L-47"><span class="linenos">47</span></a><span class="sd"> Reorder joins by topological sort order based on predicate references.</span> -</span><span id="L-48"><a href="#L-48"><span class="linenos">48</span></a><span class="sd"> """</span> -</span><span id="L-49"><a href="#L-49"><span class="linenos">49</span></a> <span class="k">for</span> <span class="n">from_</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">From</span><span class="p">):</span> -</span><span id="L-50"><a href="#L-50"><span class="linenos">50</span></a> <span class="n">head</span> <span class="o">=</span> <span class="n">from_</span><span class="o">.</span><span class="n">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> -</span><span id="L-51"><a href="#L-51"><span class="linenos">51</span></a> <span class="n">parent</span> <span class="o">=</span> <span class="n">from_</span><span class="o">.</span><span class="n">parent</span> -</span><span id="L-52"><a href="#L-52"><span class="linenos">52</span></a> <span class="n">joins</span> <span class="o">=</span> <span class="p">{</span><span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">:</span> <span class="n">join</span> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">parent</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="p">[])}</span> -</span><span id="L-53"><a href="#L-53"><span class="linenos">53</span></a> <span class="n">dag</span> <span class="o">=</span> <span class="p">{</span><span class="n">head</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">:</span> <span class="p">[]}</span> -</span><span id="L-54"><a href="#L-54"><span class="linenos">54</span></a> -</span><span id="L-55"><a href="#L-55"><span class="linenos">55</span></a> <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">joins</span><span class="o">.</span><span class="n">items</span><span class="p">():</span> -</span><span id="L-56"><a href="#L-56"><span class="linenos">56</span></a> <span class="n">dag</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">other_table_names</span><span class="p">(</span><span class="n">join</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span> -</span><span id="L-57"><a href="#L-57"><span class="linenos">57</span></a> -</span><span id="L-58"><a href="#L-58"><span class="linenos">58</span></a> <span class="n">parent</span><span class="o">.</span><span class="n">set</span><span class="p">(</span> -</span><span id="L-59"><a href="#L-59"><span class="linenos">59</span></a> <span class="s2">"joins"</span><span class="p">,</span> -</span><span id="L-60"><a href="#L-60"><span class="linenos">60</span></a> <span class="p">[</span><span class="n">joins</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">tsort</span><span class="p">(</span><span class="n">dag</span><span class="p">)</span> <span class="k">if</span> <span class="n">name</span> <span class="o">!=</span> <span class="n">head</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">],</span> -</span><span id="L-61"><a href="#L-61"><span class="linenos">61</span></a> <span class="p">)</span> -</span><span id="L-62"><a href="#L-62"><span class="linenos">62</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-63"><a href="#L-63"><span class="linenos">63</span></a> -</span><span id="L-64"><a href="#L-64"><span class="linenos">64</span></a> -</span><span id="L-65"><a href="#L-65"><span class="linenos">65</span></a><span class="k">def</span> <span class="nf">normalize</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-66"><a href="#L-66"><span class="linenos">66</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-67"><a href="#L-67"><span class="linenos">67</span></a><span class="sd"> Remove INNER and OUTER from joins as they are optional.</span> -</span><span id="L-68"><a href="#L-68"><span class="linenos">68</span></a><span class="sd"> """</span> -</span><span id="L-69"><a href="#L-69"><span class="linenos">69</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">):</span> -</span><span id="L-70"><a href="#L-70"><span class="linenos">70</span></a> <span class="k">if</span> <span class="n">join</span><span class="o">.</span><span class="n">kind</span> <span class="o">!=</span> <span class="s2">"CROSS"</span><span class="p">:</span> -</span><span id="L-71"><a href="#L-71"><span class="linenos">71</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"kind"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> -</span><span id="L-72"><a href="#L-72"><span class="linenos">72</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-73"><a href="#L-73"><span class="linenos">73</span></a> -</span><span id="L-74"><a href="#L-74"><span class="linenos">74</span></a> -</span><span id="L-75"><a href="#L-75"><span class="linenos">75</span></a><span class="k">def</span> <span class="nf">other_table_names</span><span class="p">(</span><span class="n">join</span><span class="p">,</span> <span class="n">exclude</span><span class="p">):</span> -</span><span id="L-76"><a href="#L-76"><span class="linenos">76</span></a> <span class="k">return</span> <span class="p">[</span> -</span><span id="L-77"><a href="#L-77"><span class="linenos">77</span></a> <span class="n">name</span> -</span><span id="L-78"><a href="#L-78"><span class="linenos">78</span></a> <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">column_table_names</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on"</span><span class="p">)</span> <span class="ow">or</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()))</span> -</span><span id="L-79"><a href="#L-79"><span class="linenos">79</span></a> <span class="k">if</span> <span class="n">name</span> <span class="o">!=</span> <span class="n">exclude</span> -</span><span id="L-80"><a href="#L-80"><span class="linenos">80</span></a> <span class="p">]</span> +</span><span id="L-5"><a href="#L-5"><span class="linenos"> 5</span></a><span class="k">def</span> <span class="nf">optimize_joins</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-6"><a href="#L-6"><span class="linenos"> 6</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-7"><a href="#L-7"><span class="linenos"> 7</span></a><span class="sd"> Removes cross joins if possible and reorder joins based on predicate dependencies.</span> +</span><span id="L-8"><a href="#L-8"><span class="linenos"> 8</span></a> +</span><span id="L-9"><a href="#L-9"><span class="linenos"> 9</span></a><span class="sd"> Example:</span> +</span><span id="L-10"><a href="#L-10"><span class="linenos">10</span></a><span class="sd"> >>> from sqlglot import parse_one</span> +</span><span id="L-11"><a href="#L-11"><span class="linenos">11</span></a><span class="sd"> >>> optimize_joins(parse_one("SELECT * FROM x CROSS JOIN y JOIN z ON x.a = z.a AND y.a = z.a")).sql()</span> +</span><span id="L-12"><a href="#L-12"><span class="linenos">12</span></a><span class="sd"> 'SELECT * FROM x JOIN z ON x.a = z.a AND TRUE JOIN y ON y.a = z.a'</span> +</span><span id="L-13"><a href="#L-13"><span class="linenos">13</span></a><span class="sd"> """</span> +</span><span id="L-14"><a href="#L-14"><span class="linenos">14</span></a> <span class="k">for</span> <span class="n">select</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> +</span><span id="L-15"><a href="#L-15"><span class="linenos">15</span></a> <span class="n">references</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="L-16"><a href="#L-16"><span class="linenos">16</span></a> <span class="n">cross_joins</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-17"><a href="#L-17"><span class="linenos">17</span></a> +</span><span id="L-18"><a href="#L-18"><span class="linenos">18</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">select</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="p">[]):</span> +</span><span id="L-19"><a href="#L-19"><span class="linenos">19</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">alias_or_name</span> +</span><span id="L-20"><a href="#L-20"><span class="linenos">20</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="n">other_table_names</span><span class="p">(</span><span class="n">join</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span> +</span><span id="L-21"><a href="#L-21"><span class="linenos">21</span></a> +</span><span id="L-22"><a href="#L-22"><span class="linenos">22</span></a> <span class="k">if</span> <span class="n">tables</span><span class="p">:</span> +</span><span id="L-23"><a href="#L-23"><span class="linenos">23</span></a> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> +</span><span id="L-24"><a href="#L-24"><span class="linenos">24</span></a> <span class="n">references</span><span class="p">[</span><span class="n">table</span><span class="p">]</span> <span class="o">=</span> <span class="n">references</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table</span><span class="p">,</span> <span class="p">[])</span> <span class="o">+</span> <span class="p">[</span><span class="n">join</span><span class="p">]</span> +</span><span id="L-25"><a href="#L-25"><span class="linenos">25</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-26"><a href="#L-26"><span class="linenos">26</span></a> <span class="n">cross_joins</span><span class="o">.</span><span class="n">append</span><span class="p">((</span><span class="n">name</span><span class="p">,</span> <span class="n">join</span><span class="p">))</span> +</span><span id="L-27"><a href="#L-27"><span class="linenos">27</span></a> +</span><span id="L-28"><a href="#L-28"><span class="linenos">28</span></a> <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">cross_joins</span><span class="p">:</span> +</span><span id="L-29"><a href="#L-29"><span class="linenos">29</span></a> <span class="k">for</span> <span class="n">dep</span> <span class="ow">in</span> <span class="n">references</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="p">[]):</span> +</span><span id="L-30"><a href="#L-30"><span class="linenos">30</span></a> <span class="n">on</span> <span class="o">=</span> <span class="n">dep</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"on"</span><span class="p">]</span> +</span><span id="L-31"><a href="#L-31"><span class="linenos">31</span></a> +</span><span id="L-32"><a href="#L-32"><span class="linenos">32</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">on</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> +</span><span id="L-33"><a href="#L-33"><span class="linenos">33</span></a> <span class="k">for</span> <span class="n">predicate</span> <span class="ow">in</span> <span class="n">on</span><span class="o">.</span><span class="n">flatten</span><span class="p">():</span> +</span><span id="L-34"><a href="#L-34"><span class="linenos">34</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">exp</span><span class="o">.</span><span class="n">column_table_names</span><span class="p">(</span><span class="n">predicate</span><span class="p">):</span> +</span><span id="L-35"><a href="#L-35"><span class="linenos">35</span></a> <span class="n">predicate</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span> +</span><span id="L-36"><a href="#L-36"><span class="linenos">36</span></a> <span class="n">join</span><span class="o">.</span><span class="n">on</span><span class="p">(</span><span class="n">predicate</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> +</span><span id="L-37"><a href="#L-37"><span class="linenos">37</span></a> +</span><span id="L-38"><a href="#L-38"><span class="linenos">38</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">reorder_joins</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="L-39"><a href="#L-39"><span class="linenos">39</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">normalize</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="L-40"><a href="#L-40"><span class="linenos">40</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-41"><a href="#L-41"><span class="linenos">41</span></a> +</span><span id="L-42"><a href="#L-42"><span class="linenos">42</span></a> +</span><span id="L-43"><a href="#L-43"><span class="linenos">43</span></a><span class="k">def</span> <span class="nf">reorder_joins</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-44"><a href="#L-44"><span class="linenos">44</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-45"><a href="#L-45"><span class="linenos">45</span></a><span class="sd"> Reorder joins by topological sort order based on predicate references.</span> +</span><span id="L-46"><a href="#L-46"><span class="linenos">46</span></a><span class="sd"> """</span> +</span><span id="L-47"><a href="#L-47"><span class="linenos">47</span></a> <span class="k">for</span> <span class="n">from_</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">From</span><span class="p">):</span> +</span><span id="L-48"><a href="#L-48"><span class="linenos">48</span></a> <span class="n">head</span> <span class="o">=</span> <span class="n">from_</span><span class="o">.</span><span class="n">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> +</span><span id="L-49"><a href="#L-49"><span class="linenos">49</span></a> <span class="n">parent</span> <span class="o">=</span> <span class="n">from_</span><span class="o">.</span><span class="n">parent</span> +</span><span id="L-50"><a href="#L-50"><span class="linenos">50</span></a> <span class="n">joins</span> <span class="o">=</span> <span class="p">{</span><span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">:</span> <span class="n">join</span> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">parent</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="p">[])}</span> +</span><span id="L-51"><a href="#L-51"><span class="linenos">51</span></a> <span class="n">dag</span> <span class="o">=</span> <span class="p">{</span><span class="n">head</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">:</span> <span class="p">[]}</span> +</span><span id="L-52"><a href="#L-52"><span class="linenos">52</span></a> +</span><span id="L-53"><a href="#L-53"><span class="linenos">53</span></a> <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">joins</span><span class="o">.</span><span class="n">items</span><span class="p">():</span> +</span><span id="L-54"><a href="#L-54"><span class="linenos">54</span></a> <span class="n">dag</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">other_table_names</span><span class="p">(</span><span class="n">join</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span> +</span><span id="L-55"><a href="#L-55"><span class="linenos">55</span></a> +</span><span id="L-56"><a href="#L-56"><span class="linenos">56</span></a> <span class="n">parent</span><span class="o">.</span><span class="n">set</span><span class="p">(</span> +</span><span id="L-57"><a href="#L-57"><span class="linenos">57</span></a> <span class="s2">"joins"</span><span class="p">,</span> +</span><span id="L-58"><a href="#L-58"><span class="linenos">58</span></a> <span class="p">[</span><span class="n">joins</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">tsort</span><span class="p">(</span><span class="n">dag</span><span class="p">)</span> <span class="k">if</span> <span class="n">name</span> <span class="o">!=</span> <span class="n">head</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">],</span> +</span><span id="L-59"><a href="#L-59"><span class="linenos">59</span></a> <span class="p">)</span> +</span><span id="L-60"><a href="#L-60"><span class="linenos">60</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-61"><a href="#L-61"><span class="linenos">61</span></a> +</span><span id="L-62"><a href="#L-62"><span class="linenos">62</span></a> +</span><span id="L-63"><a href="#L-63"><span class="linenos">63</span></a><span class="k">def</span> <span class="nf">normalize</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-64"><a href="#L-64"><span class="linenos">64</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-65"><a href="#L-65"><span class="linenos">65</span></a><span class="sd"> Remove INNER and OUTER from joins as they are optional.</span> +</span><span id="L-66"><a href="#L-66"><span class="linenos">66</span></a><span class="sd"> """</span> +</span><span id="L-67"><a href="#L-67"><span class="linenos">67</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">):</span> +</span><span id="L-68"><a href="#L-68"><span class="linenos">68</span></a> <span class="k">if</span> <span class="n">join</span><span class="o">.</span><span class="n">kind</span> <span class="o">!=</span> <span class="s2">"CROSS"</span><span class="p">:</span> +</span><span id="L-69"><a href="#L-69"><span class="linenos">69</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"kind"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> +</span><span id="L-70"><a href="#L-70"><span class="linenos">70</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-71"><a href="#L-71"><span class="linenos">71</span></a> +</span><span id="L-72"><a href="#L-72"><span class="linenos">72</span></a> +</span><span id="L-73"><a href="#L-73"><span class="linenos">73</span></a><span class="k">def</span> <span class="nf">other_table_names</span><span class="p">(</span><span class="n">join</span><span class="p">,</span> <span class="n">exclude</span><span class="p">):</span> +</span><span id="L-74"><a href="#L-74"><span class="linenos">74</span></a> <span class="k">return</span> <span class="p">[</span> +</span><span id="L-75"><a href="#L-75"><span class="linenos">75</span></a> <span class="n">name</span> +</span><span id="L-76"><a href="#L-76"><span class="linenos">76</span></a> <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">column_table_names</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on"</span><span class="p">)</span> <span class="ow">or</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()))</span> +</span><span id="L-77"><a href="#L-77"><span class="linenos">77</span></a> <span class="k">if</span> <span class="n">name</span> <span class="o">!=</span> <span class="n">exclude</span> +</span><span id="L-78"><a href="#L-78"><span class="linenos">78</span></a> <span class="p">]</span> </span></pre></div> @@ -160,43 +158,42 @@ </div> <a class="headerlink" href="#optimize_joins"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="optimize_joins-7"><a href="#optimize_joins-7"><span class="linenos"> 7</span></a><span class="k">def</span> <span class="nf">optimize_joins</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="optimize_joins-8"><a href="#optimize_joins-8"><span class="linenos"> 8</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="optimize_joins-9"><a href="#optimize_joins-9"><span class="linenos"> 9</span></a><span class="sd"> Removes cross joins if possible and reorder joins based on predicate dependencies.</span> -</span><span id="optimize_joins-10"><a href="#optimize_joins-10"><span class="linenos">10</span></a> -</span><span id="optimize_joins-11"><a href="#optimize_joins-11"><span class="linenos">11</span></a><span class="sd"> Example:</span> -</span><span id="optimize_joins-12"><a href="#optimize_joins-12"><span class="linenos">12</span></a><span class="sd"> >>> from sqlglot import parse_one</span> -</span><span id="optimize_joins-13"><a href="#optimize_joins-13"><span class="linenos">13</span></a><span class="sd"> >>> optimize_joins(parse_one("SELECT * FROM x CROSS JOIN y JOIN z ON x.a = z.a AND y.a = z.a")).sql()</span> -</span><span id="optimize_joins-14"><a href="#optimize_joins-14"><span class="linenos">14</span></a><span class="sd"> 'SELECT * FROM x JOIN z ON x.a = z.a AND TRUE JOIN y ON y.a = z.a'</span> -</span><span id="optimize_joins-15"><a href="#optimize_joins-15"><span class="linenos">15</span></a><span class="sd"> """</span> -</span><span id="optimize_joins-16"><a href="#optimize_joins-16"><span class="linenos">16</span></a> <span class="k">for</span> <span class="n">select</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> -</span><span id="optimize_joins-17"><a href="#optimize_joins-17"><span class="linenos">17</span></a> <span class="n">references</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="optimize_joins-18"><a href="#optimize_joins-18"><span class="linenos">18</span></a> <span class="n">cross_joins</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="optimize_joins-19"><a href="#optimize_joins-19"><span class="linenos">19</span></a> -</span><span id="optimize_joins-20"><a href="#optimize_joins-20"><span class="linenos">20</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">select</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="p">[]):</span> -</span><span id="optimize_joins-21"><a href="#optimize_joins-21"><span class="linenos">21</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">alias_or_name</span> -</span><span id="optimize_joins-22"><a href="#optimize_joins-22"><span class="linenos">22</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="n">other_table_names</span><span class="p">(</span><span class="n">join</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span> -</span><span id="optimize_joins-23"><a href="#optimize_joins-23"><span class="linenos">23</span></a> -</span><span id="optimize_joins-24"><a href="#optimize_joins-24"><span class="linenos">24</span></a> <span class="k">if</span> <span class="n">tables</span><span class="p">:</span> -</span><span id="optimize_joins-25"><a href="#optimize_joins-25"><span class="linenos">25</span></a> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> -</span><span id="optimize_joins-26"><a href="#optimize_joins-26"><span class="linenos">26</span></a> <span class="n">references</span><span class="p">[</span><span class="n">table</span><span class="p">]</span> <span class="o">=</span> <span class="n">references</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table</span><span class="p">,</span> <span class="p">[])</span> <span class="o">+</span> <span class="p">[</span><span class="n">join</span><span class="p">]</span> -</span><span id="optimize_joins-27"><a href="#optimize_joins-27"><span class="linenos">27</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="optimize_joins-28"><a href="#optimize_joins-28"><span class="linenos">28</span></a> <span class="n">cross_joins</span><span class="o">.</span><span class="n">append</span><span class="p">((</span><span class="n">name</span><span class="p">,</span> <span class="n">join</span><span class="p">))</span> -</span><span id="optimize_joins-29"><a href="#optimize_joins-29"><span class="linenos">29</span></a> -</span><span id="optimize_joins-30"><a href="#optimize_joins-30"><span class="linenos">30</span></a> <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">cross_joins</span><span class="p">:</span> -</span><span id="optimize_joins-31"><a href="#optimize_joins-31"><span class="linenos">31</span></a> <span class="k">for</span> <span class="n">dep</span> <span class="ow">in</span> <span class="n">references</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="p">[]):</span> -</span><span id="optimize_joins-32"><a href="#optimize_joins-32"><span class="linenos">32</span></a> <span class="n">on</span> <span class="o">=</span> <span class="n">dep</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"on"</span><span class="p">]</span> -</span><span id="optimize_joins-33"><a href="#optimize_joins-33"><span class="linenos">33</span></a> <span class="n">on</span> <span class="o">=</span> <span class="n">on</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">simplify</span><span class="p">(</span><span class="n">on</span><span class="p">))</span> -</span><span id="optimize_joins-34"><a href="#optimize_joins-34"><span class="linenos">34</span></a> -</span><span id="optimize_joins-35"><a href="#optimize_joins-35"><span class="linenos">35</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">on</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> -</span><span id="optimize_joins-36"><a href="#optimize_joins-36"><span class="linenos">36</span></a> <span class="k">for</span> <span class="n">predicate</span> <span class="ow">in</span> <span class="n">on</span><span class="o">.</span><span class="n">flatten</span><span class="p">():</span> -</span><span id="optimize_joins-37"><a href="#optimize_joins-37"><span class="linenos">37</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">exp</span><span class="o">.</span><span class="n">column_table_names</span><span class="p">(</span><span class="n">predicate</span><span class="p">):</span> -</span><span id="optimize_joins-38"><a href="#optimize_joins-38"><span class="linenos">38</span></a> <span class="n">predicate</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span> -</span><span id="optimize_joins-39"><a href="#optimize_joins-39"><span class="linenos">39</span></a> <span class="n">join</span><span class="o">.</span><span class="n">on</span><span class="p">(</span><span class="n">predicate</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> -</span><span id="optimize_joins-40"><a href="#optimize_joins-40"><span class="linenos">40</span></a> -</span><span id="optimize_joins-41"><a href="#optimize_joins-41"><span class="linenos">41</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">reorder_joins</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="optimize_joins-42"><a href="#optimize_joins-42"><span class="linenos">42</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">normalize</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="optimize_joins-43"><a href="#optimize_joins-43"><span class="linenos">43</span></a> <span class="k">return</span> <span class="n">expression</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="optimize_joins-6"><a href="#optimize_joins-6"><span class="linenos"> 6</span></a><span class="k">def</span> <span class="nf">optimize_joins</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="optimize_joins-7"><a href="#optimize_joins-7"><span class="linenos"> 7</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="optimize_joins-8"><a href="#optimize_joins-8"><span class="linenos"> 8</span></a><span class="sd"> Removes cross joins if possible and reorder joins based on predicate dependencies.</span> +</span><span id="optimize_joins-9"><a href="#optimize_joins-9"><span class="linenos"> 9</span></a> +</span><span id="optimize_joins-10"><a href="#optimize_joins-10"><span class="linenos">10</span></a><span class="sd"> Example:</span> +</span><span id="optimize_joins-11"><a href="#optimize_joins-11"><span class="linenos">11</span></a><span class="sd"> >>> from sqlglot import parse_one</span> +</span><span id="optimize_joins-12"><a href="#optimize_joins-12"><span class="linenos">12</span></a><span class="sd"> >>> optimize_joins(parse_one("SELECT * FROM x CROSS JOIN y JOIN z ON x.a = z.a AND y.a = z.a")).sql()</span> +</span><span id="optimize_joins-13"><a href="#optimize_joins-13"><span class="linenos">13</span></a><span class="sd"> 'SELECT * FROM x JOIN z ON x.a = z.a AND TRUE JOIN y ON y.a = z.a'</span> +</span><span id="optimize_joins-14"><a href="#optimize_joins-14"><span class="linenos">14</span></a><span class="sd"> """</span> +</span><span id="optimize_joins-15"><a href="#optimize_joins-15"><span class="linenos">15</span></a> <span class="k">for</span> <span class="n">select</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> +</span><span id="optimize_joins-16"><a href="#optimize_joins-16"><span class="linenos">16</span></a> <span class="n">references</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="optimize_joins-17"><a href="#optimize_joins-17"><span class="linenos">17</span></a> <span class="n">cross_joins</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="optimize_joins-18"><a href="#optimize_joins-18"><span class="linenos">18</span></a> +</span><span id="optimize_joins-19"><a href="#optimize_joins-19"><span class="linenos">19</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">select</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="p">[]):</span> +</span><span id="optimize_joins-20"><a href="#optimize_joins-20"><span class="linenos">20</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">alias_or_name</span> +</span><span id="optimize_joins-21"><a href="#optimize_joins-21"><span class="linenos">21</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="n">other_table_names</span><span class="p">(</span><span class="n">join</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span> +</span><span id="optimize_joins-22"><a href="#optimize_joins-22"><span class="linenos">22</span></a> +</span><span id="optimize_joins-23"><a href="#optimize_joins-23"><span class="linenos">23</span></a> <span class="k">if</span> <span class="n">tables</span><span class="p">:</span> +</span><span id="optimize_joins-24"><a href="#optimize_joins-24"><span class="linenos">24</span></a> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> +</span><span id="optimize_joins-25"><a href="#optimize_joins-25"><span class="linenos">25</span></a> <span class="n">references</span><span class="p">[</span><span class="n">table</span><span class="p">]</span> <span class="o">=</span> <span class="n">references</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table</span><span class="p">,</span> <span class="p">[])</span> <span class="o">+</span> <span class="p">[</span><span class="n">join</span><span class="p">]</span> +</span><span id="optimize_joins-26"><a href="#optimize_joins-26"><span class="linenos">26</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="optimize_joins-27"><a href="#optimize_joins-27"><span class="linenos">27</span></a> <span class="n">cross_joins</span><span class="o">.</span><span class="n">append</span><span class="p">((</span><span class="n">name</span><span class="p">,</span> <span class="n">join</span><span class="p">))</span> +</span><span id="optimize_joins-28"><a href="#optimize_joins-28"><span class="linenos">28</span></a> +</span><span id="optimize_joins-29"><a href="#optimize_joins-29"><span class="linenos">29</span></a> <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">cross_joins</span><span class="p">:</span> +</span><span id="optimize_joins-30"><a href="#optimize_joins-30"><span class="linenos">30</span></a> <span class="k">for</span> <span class="n">dep</span> <span class="ow">in</span> <span class="n">references</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="p">[]):</span> +</span><span id="optimize_joins-31"><a href="#optimize_joins-31"><span class="linenos">31</span></a> <span class="n">on</span> <span class="o">=</span> <span class="n">dep</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"on"</span><span class="p">]</span> +</span><span id="optimize_joins-32"><a href="#optimize_joins-32"><span class="linenos">32</span></a> +</span><span id="optimize_joins-33"><a href="#optimize_joins-33"><span class="linenos">33</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">on</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> +</span><span id="optimize_joins-34"><a href="#optimize_joins-34"><span class="linenos">34</span></a> <span class="k">for</span> <span class="n">predicate</span> <span class="ow">in</span> <span class="n">on</span><span class="o">.</span><span class="n">flatten</span><span class="p">():</span> +</span><span id="optimize_joins-35"><a href="#optimize_joins-35"><span class="linenos">35</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">exp</span><span class="o">.</span><span class="n">column_table_names</span><span class="p">(</span><span class="n">predicate</span><span class="p">):</span> +</span><span id="optimize_joins-36"><a href="#optimize_joins-36"><span class="linenos">36</span></a> <span class="n">predicate</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span> +</span><span id="optimize_joins-37"><a href="#optimize_joins-37"><span class="linenos">37</span></a> <span class="n">join</span><span class="o">.</span><span class="n">on</span><span class="p">(</span><span class="n">predicate</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> +</span><span id="optimize_joins-38"><a href="#optimize_joins-38"><span class="linenos">38</span></a> +</span><span id="optimize_joins-39"><a href="#optimize_joins-39"><span class="linenos">39</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">reorder_joins</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="optimize_joins-40"><a href="#optimize_joins-40"><span class="linenos">40</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">normalize</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="optimize_joins-41"><a href="#optimize_joins-41"><span class="linenos">41</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -227,24 +224,24 @@ </div> <a class="headerlink" href="#reorder_joins"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="reorder_joins-46"><a href="#reorder_joins-46"><span class="linenos">46</span></a><span class="k">def</span> <span class="nf">reorder_joins</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="reorder_joins-47"><a href="#reorder_joins-47"><span class="linenos">47</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="reorder_joins-48"><a href="#reorder_joins-48"><span class="linenos">48</span></a><span class="sd"> Reorder joins by topological sort order based on predicate references.</span> -</span><span id="reorder_joins-49"><a href="#reorder_joins-49"><span class="linenos">49</span></a><span class="sd"> """</span> -</span><span id="reorder_joins-50"><a href="#reorder_joins-50"><span class="linenos">50</span></a> <span class="k">for</span> <span class="n">from_</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">From</span><span class="p">):</span> -</span><span id="reorder_joins-51"><a href="#reorder_joins-51"><span class="linenos">51</span></a> <span class="n">head</span> <span class="o">=</span> <span class="n">from_</span><span class="o">.</span><span class="n">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> -</span><span id="reorder_joins-52"><a href="#reorder_joins-52"><span class="linenos">52</span></a> <span class="n">parent</span> <span class="o">=</span> <span class="n">from_</span><span class="o">.</span><span class="n">parent</span> -</span><span id="reorder_joins-53"><a href="#reorder_joins-53"><span class="linenos">53</span></a> <span class="n">joins</span> <span class="o">=</span> <span class="p">{</span><span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">:</span> <span class="n">join</span> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">parent</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="p">[])}</span> -</span><span id="reorder_joins-54"><a href="#reorder_joins-54"><span class="linenos">54</span></a> <span class="n">dag</span> <span class="o">=</span> <span class="p">{</span><span class="n">head</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">:</span> <span class="p">[]}</span> -</span><span id="reorder_joins-55"><a href="#reorder_joins-55"><span class="linenos">55</span></a> -</span><span id="reorder_joins-56"><a href="#reorder_joins-56"><span class="linenos">56</span></a> <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">joins</span><span class="o">.</span><span class="n">items</span><span class="p">():</span> -</span><span id="reorder_joins-57"><a href="#reorder_joins-57"><span class="linenos">57</span></a> <span class="n">dag</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">other_table_names</span><span class="p">(</span><span class="n">join</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span> -</span><span id="reorder_joins-58"><a href="#reorder_joins-58"><span class="linenos">58</span></a> -</span><span id="reorder_joins-59"><a href="#reorder_joins-59"><span class="linenos">59</span></a> <span class="n">parent</span><span class="o">.</span><span class="n">set</span><span class="p">(</span> -</span><span id="reorder_joins-60"><a href="#reorder_joins-60"><span class="linenos">60</span></a> <span class="s2">"joins"</span><span class="p">,</span> -</span><span id="reorder_joins-61"><a href="#reorder_joins-61"><span class="linenos">61</span></a> <span class="p">[</span><span class="n">joins</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">tsort</span><span class="p">(</span><span class="n">dag</span><span class="p">)</span> <span class="k">if</span> <span class="n">name</span> <span class="o">!=</span> <span class="n">head</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">],</span> -</span><span id="reorder_joins-62"><a href="#reorder_joins-62"><span class="linenos">62</span></a> <span class="p">)</span> -</span><span id="reorder_joins-63"><a href="#reorder_joins-63"><span class="linenos">63</span></a> <span class="k">return</span> <span class="n">expression</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="reorder_joins-44"><a href="#reorder_joins-44"><span class="linenos">44</span></a><span class="k">def</span> <span class="nf">reorder_joins</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="reorder_joins-45"><a href="#reorder_joins-45"><span class="linenos">45</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="reorder_joins-46"><a href="#reorder_joins-46"><span class="linenos">46</span></a><span class="sd"> Reorder joins by topological sort order based on predicate references.</span> +</span><span id="reorder_joins-47"><a href="#reorder_joins-47"><span class="linenos">47</span></a><span class="sd"> """</span> +</span><span id="reorder_joins-48"><a href="#reorder_joins-48"><span class="linenos">48</span></a> <span class="k">for</span> <span class="n">from_</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">From</span><span class="p">):</span> +</span><span id="reorder_joins-49"><a href="#reorder_joins-49"><span class="linenos">49</span></a> <span class="n">head</span> <span class="o">=</span> <span class="n">from_</span><span class="o">.</span><span class="n">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> +</span><span id="reorder_joins-50"><a href="#reorder_joins-50"><span class="linenos">50</span></a> <span class="n">parent</span> <span class="o">=</span> <span class="n">from_</span><span class="o">.</span><span class="n">parent</span> +</span><span id="reorder_joins-51"><a href="#reorder_joins-51"><span class="linenos">51</span></a> <span class="n">joins</span> <span class="o">=</span> <span class="p">{</span><span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">:</span> <span class="n">join</span> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">parent</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="p">[])}</span> +</span><span id="reorder_joins-52"><a href="#reorder_joins-52"><span class="linenos">52</span></a> <span class="n">dag</span> <span class="o">=</span> <span class="p">{</span><span class="n">head</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">:</span> <span class="p">[]}</span> +</span><span id="reorder_joins-53"><a href="#reorder_joins-53"><span class="linenos">53</span></a> +</span><span id="reorder_joins-54"><a href="#reorder_joins-54"><span class="linenos">54</span></a> <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">joins</span><span class="o">.</span><span class="n">items</span><span class="p">():</span> +</span><span id="reorder_joins-55"><a href="#reorder_joins-55"><span class="linenos">55</span></a> <span class="n">dag</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">other_table_names</span><span class="p">(</span><span class="n">join</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span> +</span><span id="reorder_joins-56"><a href="#reorder_joins-56"><span class="linenos">56</span></a> +</span><span id="reorder_joins-57"><a href="#reorder_joins-57"><span class="linenos">57</span></a> <span class="n">parent</span><span class="o">.</span><span class="n">set</span><span class="p">(</span> +</span><span id="reorder_joins-58"><a href="#reorder_joins-58"><span class="linenos">58</span></a> <span class="s2">"joins"</span><span class="p">,</span> +</span><span id="reorder_joins-59"><a href="#reorder_joins-59"><span class="linenos">59</span></a> <span class="p">[</span><span class="n">joins</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">tsort</span><span class="p">(</span><span class="n">dag</span><span class="p">)</span> <span class="k">if</span> <span class="n">name</span> <span class="o">!=</span> <span class="n">head</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">],</span> +</span><span id="reorder_joins-60"><a href="#reorder_joins-60"><span class="linenos">60</span></a> <span class="p">)</span> +</span><span id="reorder_joins-61"><a href="#reorder_joins-61"><span class="linenos">61</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -264,14 +261,14 @@ </div> <a class="headerlink" href="#normalize"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="normalize-66"><a href="#normalize-66"><span class="linenos">66</span></a><span class="k">def</span> <span class="nf">normalize</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="normalize-67"><a href="#normalize-67"><span class="linenos">67</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="normalize-68"><a href="#normalize-68"><span class="linenos">68</span></a><span class="sd"> Remove INNER and OUTER from joins as they are optional.</span> -</span><span id="normalize-69"><a href="#normalize-69"><span class="linenos">69</span></a><span class="sd"> """</span> -</span><span id="normalize-70"><a href="#normalize-70"><span class="linenos">70</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">):</span> -</span><span id="normalize-71"><a href="#normalize-71"><span class="linenos">71</span></a> <span class="k">if</span> <span class="n">join</span><span class="o">.</span><span class="n">kind</span> <span class="o">!=</span> <span class="s2">"CROSS"</span><span class="p">:</span> -</span><span id="normalize-72"><a href="#normalize-72"><span class="linenos">72</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"kind"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> -</span><span id="normalize-73"><a href="#normalize-73"><span class="linenos">73</span></a> <span class="k">return</span> <span class="n">expression</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="normalize-64"><a href="#normalize-64"><span class="linenos">64</span></a><span class="k">def</span> <span class="nf">normalize</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="normalize-65"><a href="#normalize-65"><span class="linenos">65</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="normalize-66"><a href="#normalize-66"><span class="linenos">66</span></a><span class="sd"> Remove INNER and OUTER from joins as they are optional.</span> +</span><span id="normalize-67"><a href="#normalize-67"><span class="linenos">67</span></a><span class="sd"> """</span> +</span><span id="normalize-68"><a href="#normalize-68"><span class="linenos">68</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">):</span> +</span><span id="normalize-69"><a href="#normalize-69"><span class="linenos">69</span></a> <span class="k">if</span> <span class="n">join</span><span class="o">.</span><span class="n">kind</span> <span class="o">!=</span> <span class="s2">"CROSS"</span><span class="p">:</span> +</span><span id="normalize-70"><a href="#normalize-70"><span class="linenos">70</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"kind"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> +</span><span id="normalize-71"><a href="#normalize-71"><span class="linenos">71</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -291,12 +288,12 @@ </div> <a class="headerlink" href="#other_table_names"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="other_table_names-76"><a href="#other_table_names-76"><span class="linenos">76</span></a><span class="k">def</span> <span class="nf">other_table_names</span><span class="p">(</span><span class="n">join</span><span class="p">,</span> <span class="n">exclude</span><span class="p">):</span> -</span><span id="other_table_names-77"><a href="#other_table_names-77"><span class="linenos">77</span></a> <span class="k">return</span> <span class="p">[</span> -</span><span id="other_table_names-78"><a href="#other_table_names-78"><span class="linenos">78</span></a> <span class="n">name</span> -</span><span id="other_table_names-79"><a href="#other_table_names-79"><span class="linenos">79</span></a> <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">column_table_names</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on"</span><span class="p">)</span> <span class="ow">or</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()))</span> -</span><span id="other_table_names-80"><a href="#other_table_names-80"><span class="linenos">80</span></a> <span class="k">if</span> <span class="n">name</span> <span class="o">!=</span> <span class="n">exclude</span> -</span><span id="other_table_names-81"><a href="#other_table_names-81"><span class="linenos">81</span></a> <span class="p">]</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="other_table_names-74"><a href="#other_table_names-74"><span class="linenos">74</span></a><span class="k">def</span> <span class="nf">other_table_names</span><span class="p">(</span><span class="n">join</span><span class="p">,</span> <span class="n">exclude</span><span class="p">):</span> +</span><span id="other_table_names-75"><a href="#other_table_names-75"><span class="linenos">75</span></a> <span class="k">return</span> <span class="p">[</span> +</span><span id="other_table_names-76"><a href="#other_table_names-76"><span class="linenos">76</span></a> <span class="n">name</span> +</span><span id="other_table_names-77"><a href="#other_table_names-77"><span class="linenos">77</span></a> <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">column_table_names</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on"</span><span class="p">)</span> <span class="ow">or</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()))</span> +</span><span id="other_table_names-78"><a href="#other_table_names-78"><span class="linenos">78</span></a> <span class="k">if</span> <span class="n">name</span> <span class="o">!=</span> <span class="n">exclude</span> +</span><span id="other_table_names-79"><a href="#other_table_names-79"><span class="linenos">79</span></a> <span class="p">]</span> </span></pre></div> diff --git a/docs/sqlglot/optimizer/optimizer.html b/docs/sqlglot/optimizer/optimizer.html index e6bbae7..28abdf8 100644 --- a/docs/sqlglot/optimizer/optimizer.html +++ b/docs/sqlglot/optimizer/optimizer.html @@ -3,7 +3,7 @@ <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> - <meta name="generator" content="pdoc 13.0.0"/> + <meta name="generator" content="pdoc 13.0.1"/> <title>sqlglot.optimizer.optimizer API documentation</title> <style>/*! * Bootstrap Reboot v5.0.0 (https://getbootstrap.com/) * Copyright 2011-2021 The Bootstrap Authors * Copyright 2011-2021 Twitter, Inc. * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE) * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md) */*,::after,::before{box-sizing:border-box}@media (prefers-reduced-motion:no-preference){:root{scroll-behavior:smooth}}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","Liberation Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";font-size:1rem;font-weight:400;line-height:1.5;color:#212529;background-color:#fff;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}hr{margin:1rem 0;color:inherit;background-color:currentColor;border:0;opacity:.25}hr:not([size]){height:1px}h1,h2,h3,h4,h5,h6{margin-top:0;margin-bottom:.5rem;font-weight:500;line-height:1.2}h1{font-size:calc(1.375rem + 1.5vw)}@media 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1rem}b,strong{font-weight:bolder}small{font-size:.875em}mark{padding:.2em;background-color:#fcf8e3}sub,sup{position:relative;font-size:.75em;line-height:0;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}a{color:#0d6efd;text-decoration:underline}a:hover{color:#0a58ca}a:not([href]):not([class]),a:not([href]):not([class]):hover{color:inherit;text-decoration:none}code,kbd,pre,samp{font-family:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;font-size:1em;direction:ltr;unicode-bidi:bidi-override}pre{display:block;margin-top:0;margin-bottom:1rem;overflow:auto;font-size:.875em}pre code{font-size:inherit;color:inherit;word-break:normal}code{font-size:.875em;color:#d63384;word-wrap:break-word}a>code{color:inherit}kbd{padding:.2rem .4rem;font-size:.875em;color:#fff;background-color:#212529;border-radius:.2rem}kbd kbd{padding:0;font-size:1em;font-weight:700}figure{margin:0 0 1rem}img,svg{vertical-align:middle}table{caption-side:bottom;border-collapse:collapse}caption{padding-top:.5rem;padding-bottom:.5rem;color:#6c757d;text-align:left}th{text-align:inherit;text-align:-webkit-match-parent}tbody,td,tfoot,th,thead,tr{border-color:inherit;border-style:solid;border-width:0}label{display:inline-block}button{border-radius:0}button:focus:not(:focus-visible){outline:0}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,select{text-transform:none}[role=button]{cursor:pointer}select{word-wrap:normal}select:disabled{opacity:1}[list]::-webkit-calendar-picker-indicator{display:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]:not(:disabled),[type=reset]:not(:disabled),[type=submit]:not(:disabled),button:not(:disabled){cursor:pointer}::-moz-focus-inner{padding:0;border-style:none}textarea{resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{float:left;width:100%;padding:0;margin-bottom:.5rem;font-size:calc(1.275rem + .3vw);line-height:inherit}@media (min-width:1200px){legend{font-size:1.5rem}}legend+*{clear:left}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-fields-wrapper,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-text,::-webkit-datetime-edit-year-field{padding:0}::-webkit-inner-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:textfield}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-color-swatch-wrapper{padding:0}::file-selector-button{font:inherit}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}iframe{border:0}summary{display:list-item;cursor:pointer}progress{vertical-align:baseline}[hidden]{display:none!important}</style> @@ -28,8 +28,8 @@ - <h2>API Documentation</h2> - <ul class="memberlist"> + <h2>API Documentation</h2> + <ul class="memberlist"> <li> <a class="function" href="#optimize">optimize</a> </li> @@ -79,74 +79,76 @@ </span><span id="L-21"><a href="#L-21"><span class="linenos">21</span></a><span class="kn">from</span> <span class="nn">sqlglot.optimizer.pushdown_projections</span> <span class="kn">import</span> <span class="n">pushdown_projections</span> </span><span id="L-22"><a href="#L-22"><span class="linenos">22</span></a><span class="kn">from</span> <span class="nn">sqlglot.optimizer.qualify_columns</span> <span class="kn">import</span> <span class="n">qualify_columns</span><span class="p">,</span> <span class="n">validate_qualify_columns</span> </span><span id="L-23"><a href="#L-23"><span class="linenos">23</span></a><span class="kn">from</span> <span class="nn">sqlglot.optimizer.qualify_tables</span> <span class="kn">import</span> <span class="n">qualify_tables</span> -</span><span id="L-24"><a href="#L-24"><span class="linenos">24</span></a><span class="kn">from</span> <span class="nn">sqlglot.optimizer.unnest_subqueries</span> <span class="kn">import</span> <span class="n">unnest_subqueries</span> -</span><span id="L-25"><a href="#L-25"><span class="linenos">25</span></a><span class="kn">from</span> <span class="nn">sqlglot.schema</span> <span class="kn">import</span> <span class="n">ensure_schema</span> -</span><span id="L-26"><a href="#L-26"><span class="linenos">26</span></a> -</span><span id="L-27"><a href="#L-27"><span class="linenos">27</span></a><span class="n">RULES</span> <span class="o">=</span> <span class="p">(</span> -</span><span id="L-28"><a href="#L-28"><span class="linenos">28</span></a> <span class="n">lower_identities</span><span class="p">,</span> -</span><span id="L-29"><a href="#L-29"><span class="linenos">29</span></a> <span class="n">qualify_tables</span><span class="p">,</span> -</span><span id="L-30"><a href="#L-30"><span class="linenos">30</span></a> <span class="n">isolate_table_selects</span><span class="p">,</span> -</span><span id="L-31"><a href="#L-31"><span class="linenos">31</span></a> <span class="n">qualify_columns</span><span class="p">,</span> -</span><span id="L-32"><a href="#L-32"><span class="linenos">32</span></a> <span class="n">expand_laterals</span><span class="p">,</span> -</span><span id="L-33"><a href="#L-33"><span class="linenos">33</span></a> <span class="n">pushdown_projections</span><span class="p">,</span> -</span><span id="L-34"><a href="#L-34"><span class="linenos">34</span></a> <span class="n">validate_qualify_columns</span><span class="p">,</span> -</span><span id="L-35"><a href="#L-35"><span class="linenos">35</span></a> <span class="n">normalize</span><span class="p">,</span> -</span><span id="L-36"><a href="#L-36"><span class="linenos">36</span></a> <span class="n">unnest_subqueries</span><span class="p">,</span> -</span><span id="L-37"><a href="#L-37"><span class="linenos">37</span></a> <span class="n">expand_multi_table_selects</span><span class="p">,</span> -</span><span id="L-38"><a href="#L-38"><span class="linenos">38</span></a> <span class="n">pushdown_predicates</span><span class="p">,</span> -</span><span id="L-39"><a href="#L-39"><span class="linenos">39</span></a> <span class="n">optimize_joins</span><span class="p">,</span> -</span><span id="L-40"><a href="#L-40"><span class="linenos">40</span></a> <span class="n">eliminate_subqueries</span><span class="p">,</span> -</span><span id="L-41"><a href="#L-41"><span class="linenos">41</span></a> <span class="n">merge_subqueries</span><span class="p">,</span> -</span><span id="L-42"><a href="#L-42"><span class="linenos">42</span></a> <span class="n">eliminate_joins</span><span class="p">,</span> -</span><span id="L-43"><a href="#L-43"><span class="linenos">43</span></a> <span class="n">eliminate_ctes</span><span class="p">,</span> -</span><span id="L-44"><a href="#L-44"><span class="linenos">44</span></a> <span class="n">annotate_types</span><span class="p">,</span> -</span><span id="L-45"><a href="#L-45"><span class="linenos">45</span></a> <span class="n">canonicalize</span><span class="p">,</span> -</span><span id="L-46"><a href="#L-46"><span class="linenos">46</span></a><span class="p">)</span> -</span><span id="L-47"><a href="#L-47"><span class="linenos">47</span></a> -</span><span id="L-48"><a href="#L-48"><span class="linenos">48</span></a> -</span><span id="L-49"><a href="#L-49"><span class="linenos">49</span></a><span class="k">def</span> <span class="nf">optimize</span><span class="p">(</span> -</span><span id="L-50"><a href="#L-50"><span class="linenos">50</span></a> <span class="n">expression</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> -</span><span id="L-51"><a href="#L-51"><span class="linenos">51</span></a> <span class="n">schema</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="nb">dict</span> <span class="o">|</span> <span class="n">Schema</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> -</span><span id="L-52"><a href="#L-52"><span class="linenos">52</span></a> <span class="n">db</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> -</span><span id="L-53"><a href="#L-53"><span class="linenos">53</span></a> <span class="n">catalog</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> -</span><span id="L-54"><a href="#L-54"><span class="linenos">54</span></a> <span class="n">dialect</span><span class="p">:</span> <span class="n">DialectType</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> -</span><span id="L-55"><a href="#L-55"><span class="linenos">55</span></a> <span class="n">rules</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Sequence</span><span class="p">[</span><span class="n">t</span><span class="o">.</span><span class="n">Callable</span><span class="p">]</span> <span class="o">=</span> <span class="n">RULES</span><span class="p">,</span> -</span><span id="L-56"><a href="#L-56"><span class="linenos">56</span></a> <span class="o">**</span><span class="n">kwargs</span><span class="p">,</span> -</span><span id="L-57"><a href="#L-57"><span class="linenos">57</span></a><span class="p">):</span> -</span><span id="L-58"><a href="#L-58"><span class="linenos">58</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-59"><a href="#L-59"><span class="linenos">59</span></a><span class="sd"> Rewrite a sqlglot AST into an optimized form.</span> -</span><span id="L-60"><a href="#L-60"><span class="linenos">60</span></a> -</span><span id="L-61"><a href="#L-61"><span class="linenos">61</span></a><span class="sd"> Args:</span> -</span><span id="L-62"><a href="#L-62"><span class="linenos">62</span></a><span class="sd"> expression: expression to optimize</span> -</span><span id="L-63"><a href="#L-63"><span class="linenos">63</span></a><span class="sd"> schema: database schema.</span> -</span><span id="L-64"><a href="#L-64"><span class="linenos">64</span></a><span class="sd"> This can either be an instance of `sqlglot.optimizer.Schema` or a mapping in one of</span> -</span><span id="L-65"><a href="#L-65"><span class="linenos">65</span></a><span class="sd"> the following forms:</span> -</span><span id="L-66"><a href="#L-66"><span class="linenos">66</span></a><span class="sd"> 1. {table: {col: type}}</span> -</span><span id="L-67"><a href="#L-67"><span class="linenos">67</span></a><span class="sd"> 2. {db: {table: {col: type}}}</span> -</span><span id="L-68"><a href="#L-68"><span class="linenos">68</span></a><span class="sd"> 3. {catalog: {db: {table: {col: type}}}}</span> -</span><span id="L-69"><a href="#L-69"><span class="linenos">69</span></a><span class="sd"> If no schema is provided then the default schema defined at `sqlgot.schema` will be used</span> -</span><span id="L-70"><a href="#L-70"><span class="linenos">70</span></a><span class="sd"> db: specify the default database, as might be set by a `USE DATABASE db` statement</span> -</span><span id="L-71"><a href="#L-71"><span class="linenos">71</span></a><span class="sd"> catalog: specify the default catalog, as might be set by a `USE CATALOG c` statement</span> -</span><span id="L-72"><a href="#L-72"><span class="linenos">72</span></a><span class="sd"> dialect: The dialect to parse the sql string.</span> -</span><span id="L-73"><a href="#L-73"><span class="linenos">73</span></a><span class="sd"> rules: sequence of optimizer rules to use.</span> -</span><span id="L-74"><a href="#L-74"><span class="linenos">74</span></a><span class="sd"> Many of the rules require tables and columns to be qualified.</span> -</span><span id="L-75"><a href="#L-75"><span class="linenos">75</span></a><span class="sd"> Do not remove qualify_tables or qualify_columns from the sequence of rules unless you know</span> -</span><span id="L-76"><a href="#L-76"><span class="linenos">76</span></a><span class="sd"> what you're doing!</span> -</span><span id="L-77"><a href="#L-77"><span class="linenos">77</span></a><span class="sd"> **kwargs: If a rule has a keyword argument with a same name in **kwargs, it will be passed in.</span> -</span><span id="L-78"><a href="#L-78"><span class="linenos">78</span></a><span class="sd"> Returns:</span> -</span><span id="L-79"><a href="#L-79"><span class="linenos">79</span></a><span class="sd"> sqlglot.Expression: optimized expression</span> -</span><span id="L-80"><a href="#L-80"><span class="linenos">80</span></a><span class="sd"> """</span> -</span><span id="L-81"><a href="#L-81"><span class="linenos">81</span></a> <span class="n">schema</span> <span class="o">=</span> <span class="n">ensure_schema</span><span class="p">(</span><span class="n">schema</span> <span class="ow">or</span> <span class="n">sqlglot</span><span class="o">.</span><span class="n">schema</span><span class="p">)</span> -</span><span id="L-82"><a href="#L-82"><span class="linenos">82</span></a> <span class="n">possible_kwargs</span> <span class="o">=</span> <span class="p">{</span><span class="s2">"db"</span><span class="p">:</span> <span class="n">db</span><span class="p">,</span> <span class="s2">"catalog"</span><span class="p">:</span> <span class="n">catalog</span><span class="p">,</span> <span class="s2">"schema"</span><span class="p">:</span> <span class="n">schema</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">}</span> -</span><span id="L-83"><a href="#L-83"><span class="linenos">83</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">maybe_parse</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dialect</span><span class="o">=</span><span class="n">dialect</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> -</span><span id="L-84"><a href="#L-84"><span class="linenos">84</span></a> <span class="k">for</span> <span class="n">rule</span> <span class="ow">in</span> <span class="n">rules</span><span class="p">:</span> -</span><span id="L-85"><a href="#L-85"><span class="linenos">85</span></a> <span class="c1"># Find any additional rule parameters, beyond `expression`</span> -</span><span id="L-86"><a href="#L-86"><span class="linenos">86</span></a> <span class="n">rule_params</span> <span class="o">=</span> <span class="n">rule</span><span class="o">.</span><span class="vm">__code__</span><span class="o">.</span><span class="n">co_varnames</span> -</span><span id="L-87"><a href="#L-87"><span class="linenos">87</span></a> <span class="n">rule_kwargs</span> <span class="o">=</span> <span class="p">{</span> -</span><span id="L-88"><a href="#L-88"><span class="linenos">88</span></a> <span class="n">param</span><span class="p">:</span> <span class="n">possible_kwargs</span><span class="p">[</span><span class="n">param</span><span class="p">]</span> <span class="k">for</span> <span class="n">param</span> <span class="ow">in</span> <span class="n">rule_params</span> <span class="k">if</span> <span class="n">param</span> <span class="ow">in</span> <span class="n">possible_kwargs</span> -</span><span id="L-89"><a href="#L-89"><span class="linenos">89</span></a> <span class="p">}</span> -</span><span id="L-90"><a href="#L-90"><span class="linenos">90</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">rule</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="o">**</span><span class="n">rule_kwargs</span><span class="p">)</span> -</span><span id="L-91"><a href="#L-91"><span class="linenos">91</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-24"><a href="#L-24"><span class="linenos">24</span></a><span class="kn">from</span> <span class="nn">sqlglot.optimizer.simplify</span> <span class="kn">import</span> <span class="n">simplify</span> +</span><span id="L-25"><a href="#L-25"><span class="linenos">25</span></a><span class="kn">from</span> <span class="nn">sqlglot.optimizer.unnest_subqueries</span> <span class="kn">import</span> <span class="n">unnest_subqueries</span> +</span><span id="L-26"><a href="#L-26"><span class="linenos">26</span></a><span class="kn">from</span> <span class="nn">sqlglot.schema</span> <span class="kn">import</span> <span class="n">ensure_schema</span> +</span><span id="L-27"><a href="#L-27"><span class="linenos">27</span></a> +</span><span id="L-28"><a href="#L-28"><span class="linenos">28</span></a><span class="n">RULES</span> <span class="o">=</span> <span class="p">(</span> +</span><span id="L-29"><a href="#L-29"><span class="linenos">29</span></a> <span class="n">lower_identities</span><span class="p">,</span> +</span><span id="L-30"><a href="#L-30"><span class="linenos">30</span></a> <span class="n">qualify_tables</span><span class="p">,</span> +</span><span id="L-31"><a href="#L-31"><span class="linenos">31</span></a> <span class="n">isolate_table_selects</span><span class="p">,</span> +</span><span id="L-32"><a href="#L-32"><span class="linenos">32</span></a> <span class="n">qualify_columns</span><span class="p">,</span> +</span><span id="L-33"><a href="#L-33"><span class="linenos">33</span></a> <span class="n">expand_laterals</span><span class="p">,</span> +</span><span id="L-34"><a href="#L-34"><span class="linenos">34</span></a> <span class="n">pushdown_projections</span><span class="p">,</span> +</span><span id="L-35"><a href="#L-35"><span class="linenos">35</span></a> <span class="n">validate_qualify_columns</span><span class="p">,</span> +</span><span id="L-36"><a href="#L-36"><span class="linenos">36</span></a> <span class="n">normalize</span><span class="p">,</span> +</span><span id="L-37"><a href="#L-37"><span class="linenos">37</span></a> <span class="n">unnest_subqueries</span><span class="p">,</span> +</span><span id="L-38"><a href="#L-38"><span class="linenos">38</span></a> <span class="n">expand_multi_table_selects</span><span class="p">,</span> +</span><span id="L-39"><a href="#L-39"><span class="linenos">39</span></a> <span class="n">pushdown_predicates</span><span class="p">,</span> +</span><span id="L-40"><a href="#L-40"><span class="linenos">40</span></a> <span class="n">optimize_joins</span><span class="p">,</span> +</span><span id="L-41"><a href="#L-41"><span class="linenos">41</span></a> <span class="n">eliminate_subqueries</span><span class="p">,</span> +</span><span id="L-42"><a href="#L-42"><span class="linenos">42</span></a> <span class="n">merge_subqueries</span><span class="p">,</span> +</span><span id="L-43"><a href="#L-43"><span class="linenos">43</span></a> <span class="n">eliminate_joins</span><span class="p">,</span> +</span><span id="L-44"><a href="#L-44"><span class="linenos">44</span></a> <span class="n">eliminate_ctes</span><span class="p">,</span> +</span><span id="L-45"><a href="#L-45"><span class="linenos">45</span></a> <span class="n">annotate_types</span><span class="p">,</span> +</span><span id="L-46"><a href="#L-46"><span class="linenos">46</span></a> <span class="n">canonicalize</span><span class="p">,</span> +</span><span id="L-47"><a href="#L-47"><span class="linenos">47</span></a> <span class="n">simplify</span><span class="p">,</span> +</span><span id="L-48"><a href="#L-48"><span class="linenos">48</span></a><span class="p">)</span> +</span><span id="L-49"><a href="#L-49"><span class="linenos">49</span></a> +</span><span id="L-50"><a href="#L-50"><span class="linenos">50</span></a> +</span><span id="L-51"><a href="#L-51"><span class="linenos">51</span></a><span class="k">def</span> <span class="nf">optimize</span><span class="p">(</span> +</span><span id="L-52"><a href="#L-52"><span class="linenos">52</span></a> <span class="n">expression</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> +</span><span id="L-53"><a href="#L-53"><span class="linenos">53</span></a> <span class="n">schema</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="nb">dict</span> <span class="o">|</span> <span class="n">Schema</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> +</span><span id="L-54"><a href="#L-54"><span class="linenos">54</span></a> <span class="n">db</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> +</span><span id="L-55"><a href="#L-55"><span class="linenos">55</span></a> <span class="n">catalog</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> +</span><span id="L-56"><a href="#L-56"><span class="linenos">56</span></a> <span class="n">dialect</span><span class="p">:</span> <span class="n">DialectType</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> +</span><span id="L-57"><a href="#L-57"><span class="linenos">57</span></a> <span class="n">rules</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Sequence</span><span class="p">[</span><span class="n">t</span><span class="o">.</span><span class="n">Callable</span><span class="p">]</span> <span class="o">=</span> <span class="n">RULES</span><span class="p">,</span> +</span><span id="L-58"><a href="#L-58"><span class="linenos">58</span></a> <span class="o">**</span><span class="n">kwargs</span><span class="p">,</span> +</span><span id="L-59"><a href="#L-59"><span class="linenos">59</span></a><span class="p">):</span> +</span><span id="L-60"><a href="#L-60"><span class="linenos">60</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-61"><a href="#L-61"><span class="linenos">61</span></a><span class="sd"> Rewrite a sqlglot AST into an optimized form.</span> +</span><span id="L-62"><a href="#L-62"><span class="linenos">62</span></a> +</span><span id="L-63"><a href="#L-63"><span class="linenos">63</span></a><span class="sd"> Args:</span> +</span><span id="L-64"><a href="#L-64"><span class="linenos">64</span></a><span class="sd"> expression: expression to optimize</span> +</span><span id="L-65"><a href="#L-65"><span class="linenos">65</span></a><span class="sd"> schema: database schema.</span> +</span><span id="L-66"><a href="#L-66"><span class="linenos">66</span></a><span class="sd"> This can either be an instance of `sqlglot.optimizer.Schema` or a mapping in one of</span> +</span><span id="L-67"><a href="#L-67"><span class="linenos">67</span></a><span class="sd"> the following forms:</span> +</span><span id="L-68"><a href="#L-68"><span class="linenos">68</span></a><span class="sd"> 1. {table: {col: type}}</span> +</span><span id="L-69"><a href="#L-69"><span class="linenos">69</span></a><span class="sd"> 2. {db: {table: {col: type}}}</span> +</span><span id="L-70"><a href="#L-70"><span class="linenos">70</span></a><span class="sd"> 3. {catalog: {db: {table: {col: type}}}}</span> +</span><span id="L-71"><a href="#L-71"><span class="linenos">71</span></a><span class="sd"> If no schema is provided then the default schema defined at `sqlgot.schema` will be used</span> +</span><span id="L-72"><a href="#L-72"><span class="linenos">72</span></a><span class="sd"> db: specify the default database, as might be set by a `USE DATABASE db` statement</span> +</span><span id="L-73"><a href="#L-73"><span class="linenos">73</span></a><span class="sd"> catalog: specify the default catalog, as might be set by a `USE CATALOG c` statement</span> +</span><span id="L-74"><a href="#L-74"><span class="linenos">74</span></a><span class="sd"> dialect: The dialect to parse the sql string.</span> +</span><span id="L-75"><a href="#L-75"><span class="linenos">75</span></a><span class="sd"> rules: sequence of optimizer rules to use.</span> +</span><span id="L-76"><a href="#L-76"><span class="linenos">76</span></a><span class="sd"> Many of the rules require tables and columns to be qualified.</span> +</span><span id="L-77"><a href="#L-77"><span class="linenos">77</span></a><span class="sd"> Do not remove qualify_tables or qualify_columns from the sequence of rules unless you know</span> +</span><span id="L-78"><a href="#L-78"><span class="linenos">78</span></a><span class="sd"> what you're doing!</span> +</span><span id="L-79"><a href="#L-79"><span class="linenos">79</span></a><span class="sd"> **kwargs: If a rule has a keyword argument with a same name in **kwargs, it will be passed in.</span> +</span><span id="L-80"><a href="#L-80"><span class="linenos">80</span></a><span class="sd"> Returns:</span> +</span><span id="L-81"><a href="#L-81"><span class="linenos">81</span></a><span class="sd"> sqlglot.Expression: optimized expression</span> +</span><span id="L-82"><a href="#L-82"><span class="linenos">82</span></a><span class="sd"> """</span> +</span><span id="L-83"><a href="#L-83"><span class="linenos">83</span></a> <span class="n">schema</span> <span class="o">=</span> <span class="n">ensure_schema</span><span class="p">(</span><span class="n">schema</span> <span class="ow">or</span> <span class="n">sqlglot</span><span class="o">.</span><span class="n">schema</span><span class="p">,</span> <span class="n">dialect</span><span class="o">=</span><span class="n">dialect</span><span class="p">)</span> +</span><span id="L-84"><a href="#L-84"><span class="linenos">84</span></a> <span class="n">possible_kwargs</span> <span class="o">=</span> <span class="p">{</span><span class="s2">"db"</span><span class="p">:</span> <span class="n">db</span><span class="p">,</span> <span class="s2">"catalog"</span><span class="p">:</span> <span class="n">catalog</span><span class="p">,</span> <span class="s2">"schema"</span><span class="p">:</span> <span class="n">schema</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">}</span> +</span><span id="L-85"><a href="#L-85"><span class="linenos">85</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">maybe_parse</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dialect</span><span class="o">=</span><span class="n">dialect</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> +</span><span id="L-86"><a href="#L-86"><span class="linenos">86</span></a> <span class="k">for</span> <span class="n">rule</span> <span class="ow">in</span> <span class="n">rules</span><span class="p">:</span> +</span><span id="L-87"><a href="#L-87"><span class="linenos">87</span></a> <span class="c1"># Find any additional rule parameters, beyond `expression`</span> +</span><span id="L-88"><a href="#L-88"><span class="linenos">88</span></a> <span class="n">rule_params</span> <span class="o">=</span> <span class="n">rule</span><span class="o">.</span><span class="vm">__code__</span><span class="o">.</span><span class="n">co_varnames</span> +</span><span id="L-89"><a href="#L-89"><span class="linenos">89</span></a> <span class="n">rule_kwargs</span> <span class="o">=</span> <span class="p">{</span> +</span><span id="L-90"><a href="#L-90"><span class="linenos">90</span></a> <span class="n">param</span><span class="p">:</span> <span class="n">possible_kwargs</span><span class="p">[</span><span class="n">param</span><span class="p">]</span> <span class="k">for</span> <span class="n">param</span> <span class="ow">in</span> <span class="n">rule_params</span> <span class="k">if</span> <span class="n">param</span> <span class="ow">in</span> <span class="n">possible_kwargs</span> +</span><span id="L-91"><a href="#L-91"><span class="linenos">91</span></a> <span class="p">}</span> +</span><span id="L-92"><a href="#L-92"><span class="linenos">92</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">rule</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="o">**</span><span class="n">rule_kwargs</span><span class="p">)</span> +</span><span id="L-93"><a href="#L-93"><span class="linenos">93</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -156,55 +158,55 @@ <div class="attr function"> <span class="def">def</span> - <span class="name">optimize</span><span class="signature pdoc-code multiline">(<span class="param"> <span class="n">expression</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="n"><a href="../expressions.html#Expression">sqlglot.expressions.Expression</a></span>,</span><span class="param"> <span class="n">schema</span><span class="p">:</span> <span class="n">Union</span><span class="p">[</span><span class="nb">dict</span><span class="p">,</span> <span class="n"><a href="../schema.html#Schema">sqlglot.schema.Schema</a></span><span class="p">,</span> <span class="n">NoneType</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>,</span><span class="param"> <span class="n">db</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>,</span><span class="param"> <span class="n">catalog</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>,</span><span class="param"> <span class="n">dialect</span><span class="p">:</span> <span class="n">Union</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n"><a href="../dialects/dialect.html#Dialect">sqlglot.dialects.dialect.Dialect</a></span><span class="p">,</span> <span class="n">Type</span><span class="p">[</span><span class="n"><a href="../dialects/dialect.html#Dialect">sqlglot.dialects.dialect.Dialect</a></span><span class="p">],</span> <span class="n">NoneType</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>,</span><span class="param"> <span class="n">rules</span><span class="p">:</span> <span class="n">Sequence</span><span class="p">[</span><span class="n">Callable</span><span class="p">]</span> <span class="o">=</span> <span class="p">(</span><span class="o"><</span><span class="n">function</span> <span class="n">lower_identities</span> <span class="n">at</span> <span class="mh">0x7fb8b87bc1f0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">qualify_tables</span> <span class="n">at</span> <span class="mh">0x7fb8b87be8c0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">isolate_table_selects</span> <span class="n">at</span> <span class="mh">0x7fb8b87bc160</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">qualify_columns</span> <span class="n">at</span> <span class="mh">0x7fb8b87bd7e0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">expand_laterals</span> <span class="n">at</span> <span class="mh">0x7fb8b87afeb0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">pushdown_projections</span> <span class="n">at</span> <span class="mh">0x7fb8b87be290</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">validate_qualify_columns</span> <span class="n">at</span> <span class="mh">0x7fb8b87bd870</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">normalize</span> <span class="n">at</span> <span class="mh">0x7fb8b87adea0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">unnest_subqueries</span> <span class="n">at</span> <span class="mh">0x7fb8b87be9e0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">expand_multi_table_selects</span> <span class="n">at</span> <span class="mh">0x7fb8b87bc0d0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">pushdown_predicates</span> <span class="n">at</span> <span class="mh">0x7fb8b87bd2d0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">optimize_joins</span> <span class="n">at</span> <span class="mh">0x7fb8b87bd000</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">eliminate_subqueries</span> <span class="n">at</span> <span class="mh">0x7fb8b87afac0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">merge_subqueries</span> <span class="n">at</span> <span class="mh">0x7fb8b87bc4c0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">eliminate_joins</span> <span class="n">at</span> <span class="mh">0x7fb8b87adcf0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">eliminate_ctes</span> <span class="n">at</span> <span class="mh">0x7fb8b87adbd0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">annotate_types</span> <span class="n">at</span> <span class="mh">0x7fb8b87465f0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">canonicalize</span> <span class="n">at</span> <span class="mh">0x7fb8b87ad6c0</span><span class="o">></span><span class="p">)</span>,</span><span class="param"> <span class="o">**</span><span class="n">kwargs</span></span><span class="return-annotation">):</span></span> + <span class="name">optimize</span><span class="signature pdoc-code multiline">(<span class="param"> <span class="n">expression</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="n"><a href="../expressions.html#Expression">sqlglot.expressions.Expression</a></span>,</span><span class="param"> <span class="n">schema</span><span class="p">:</span> <span class="n">Union</span><span class="p">[</span><span class="nb">dict</span><span class="p">,</span> <span class="n"><a href="../schema.html#Schema">sqlglot.schema.Schema</a></span><span class="p">,</span> <span class="n">NoneType</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>,</span><span class="param"> <span class="n">db</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>,</span><span class="param"> <span class="n">catalog</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>,</span><span class="param"> <span class="n">dialect</span><span class="p">:</span> <span class="n">Union</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n"><a href="../dialects/dialect.html#Dialect">sqlglot.dialects.dialect.Dialect</a></span><span class="p">,</span> <span class="n">Type</span><span class="p">[</span><span class="n"><a href="../dialects/dialect.html#Dialect">sqlglot.dialects.dialect.Dialect</a></span><span class="p">],</span> <span class="n">NoneType</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>,</span><span class="param"> <span class="n">rules</span><span class="p">:</span> <span class="n">Sequence</span><span class="p">[</span><span class="n">Callable</span><span class="p">]</span> <span class="o">=</span> <span class="p">(</span><span class="o"><</span><span class="n">function</span> <span class="n">lower_identities</span> <span class="n">at</span> <span class="mh">0x7f0637f3d360</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">qualify_tables</span> <span class="n">at</span> <span class="mh">0x7f0637f3fa30</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">isolate_table_selects</span> <span class="n">at</span> <span class="mh">0x7f0637f3d240</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">qualify_columns</span> <span class="n">at</span> <span class="mh">0x7f0637f3e950</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">expand_laterals</span> <span class="n">at</span> <span class="mh">0x7f0637f3d000</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">pushdown_projections</span> <span class="n">at</span> <span class="mh">0x7f0637f3f400</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">validate_qualify_columns</span> <span class="n">at</span> <span class="mh">0x7f0637f3e9e0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">normalize</span> <span class="n">at</span> <span class="mh">0x7f0637eeae60</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">unnest_subqueries</span> <span class="n">at</span> <span class="mh">0x7f0637f3fb50</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">expand_multi_table_selects</span> <span class="n">at</span> <span class="mh">0x7f0637f3d1b0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">pushdown_predicates</span> <span class="n">at</span> <span class="mh">0x7f0637f3e4d0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">optimize_joins</span> <span class="n">at</span> <span class="mh">0x7f0637f3e0e0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">eliminate_subqueries</span> <span class="n">at</span> <span class="mh">0x7f0637f3cc10</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">merge_subqueries</span> <span class="n">at</span> <span class="mh">0x7f0637f3d630</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">eliminate_joins</span> <span class="n">at</span> <span class="mh">0x7f0637eead40</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">eliminate_ctes</span> <span class="n">at</span> <span class="mh">0x7f0637eeac20</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">annotate_types</span> <span class="n">at</span> <span class="mh">0x7f0637ec7490</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">canonicalize</span> <span class="n">at</span> <span class="mh">0x7f0637eea680</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">simplify</span> <span class="n">at</span> <span class="mh">0x7f0637eeaf80</span><span class="o">></span><span class="p">)</span>,</span><span class="param"> <span class="o">**</span><span class="n">kwargs</span></span><span class="return-annotation">):</span></span> <label class="view-source-button" for="optimize-view-source"><span>View Source</span></label> </div> <a class="headerlink" href="#optimize"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="optimize-50"><a href="#optimize-50"><span class="linenos">50</span></a><span class="k">def</span> <span class="nf">optimize</span><span class="p">(</span> -</span><span id="optimize-51"><a href="#optimize-51"><span class="linenos">51</span></a> <span class="n">expression</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> -</span><span id="optimize-52"><a href="#optimize-52"><span class="linenos">52</span></a> <span class="n">schema</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="nb">dict</span> <span class="o">|</span> <span class="n">Schema</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> -</span><span id="optimize-53"><a href="#optimize-53"><span class="linenos">53</span></a> <span class="n">db</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> -</span><span id="optimize-54"><a href="#optimize-54"><span class="linenos">54</span></a> <span class="n">catalog</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> -</span><span id="optimize-55"><a href="#optimize-55"><span class="linenos">55</span></a> <span class="n">dialect</span><span class="p">:</span> <span class="n">DialectType</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> -</span><span id="optimize-56"><a href="#optimize-56"><span class="linenos">56</span></a> <span class="n">rules</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Sequence</span><span class="p">[</span><span class="n">t</span><span class="o">.</span><span class="n">Callable</span><span class="p">]</span> <span class="o">=</span> <span class="n">RULES</span><span class="p">,</span> -</span><span id="optimize-57"><a href="#optimize-57"><span class="linenos">57</span></a> <span class="o">**</span><span class="n">kwargs</span><span class="p">,</span> -</span><span id="optimize-58"><a href="#optimize-58"><span class="linenos">58</span></a><span class="p">):</span> -</span><span id="optimize-59"><a href="#optimize-59"><span class="linenos">59</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="optimize-60"><a href="#optimize-60"><span class="linenos">60</span></a><span class="sd"> Rewrite a sqlglot AST into an optimized form.</span> -</span><span id="optimize-61"><a href="#optimize-61"><span class="linenos">61</span></a> -</span><span id="optimize-62"><a href="#optimize-62"><span class="linenos">62</span></a><span class="sd"> Args:</span> -</span><span id="optimize-63"><a href="#optimize-63"><span class="linenos">63</span></a><span class="sd"> expression: expression to optimize</span> -</span><span id="optimize-64"><a href="#optimize-64"><span class="linenos">64</span></a><span class="sd"> schema: database schema.</span> -</span><span id="optimize-65"><a href="#optimize-65"><span class="linenos">65</span></a><span class="sd"> This can either be an instance of `sqlglot.optimizer.Schema` or a mapping in one of</span> -</span><span id="optimize-66"><a href="#optimize-66"><span class="linenos">66</span></a><span class="sd"> the following forms:</span> -</span><span id="optimize-67"><a href="#optimize-67"><span class="linenos">67</span></a><span class="sd"> 1. {table: {col: type}}</span> -</span><span id="optimize-68"><a href="#optimize-68"><span class="linenos">68</span></a><span class="sd"> 2. {db: {table: {col: type}}}</span> -</span><span id="optimize-69"><a href="#optimize-69"><span class="linenos">69</span></a><span class="sd"> 3. {catalog: {db: {table: {col: type}}}}</span> -</span><span id="optimize-70"><a href="#optimize-70"><span class="linenos">70</span></a><span class="sd"> If no schema is provided then the default schema defined at `sqlgot.schema` will be used</span> -</span><span id="optimize-71"><a href="#optimize-71"><span class="linenos">71</span></a><span class="sd"> db: specify the default database, as might be set by a `USE DATABASE db` statement</span> -</span><span id="optimize-72"><a href="#optimize-72"><span class="linenos">72</span></a><span class="sd"> catalog: specify the default catalog, as might be set by a `USE CATALOG c` statement</span> -</span><span id="optimize-73"><a href="#optimize-73"><span class="linenos">73</span></a><span class="sd"> dialect: The dialect to parse the sql string.</span> -</span><span id="optimize-74"><a href="#optimize-74"><span class="linenos">74</span></a><span class="sd"> rules: sequence of optimizer rules to use.</span> -</span><span id="optimize-75"><a href="#optimize-75"><span class="linenos">75</span></a><span class="sd"> Many of the rules require tables and columns to be qualified.</span> -</span><span id="optimize-76"><a href="#optimize-76"><span class="linenos">76</span></a><span class="sd"> Do not remove qualify_tables or qualify_columns from the sequence of rules unless you know</span> -</span><span id="optimize-77"><a href="#optimize-77"><span class="linenos">77</span></a><span class="sd"> what you're doing!</span> -</span><span id="optimize-78"><a href="#optimize-78"><span class="linenos">78</span></a><span class="sd"> **kwargs: If a rule has a keyword argument with a same name in **kwargs, it will be passed in.</span> -</span><span id="optimize-79"><a href="#optimize-79"><span class="linenos">79</span></a><span class="sd"> Returns:</span> -</span><span id="optimize-80"><a href="#optimize-80"><span class="linenos">80</span></a><span class="sd"> sqlglot.Expression: optimized expression</span> -</span><span id="optimize-81"><a href="#optimize-81"><span class="linenos">81</span></a><span class="sd"> """</span> -</span><span id="optimize-82"><a href="#optimize-82"><span class="linenos">82</span></a> <span class="n">schema</span> <span class="o">=</span> <span class="n">ensure_schema</span><span class="p">(</span><span class="n">schema</span> <span class="ow">or</span> <span class="n">sqlglot</span><span class="o">.</span><span class="n">schema</span><span class="p">)</span> -</span><span id="optimize-83"><a href="#optimize-83"><span class="linenos">83</span></a> <span class="n">possible_kwargs</span> <span class="o">=</span> <span class="p">{</span><span class="s2">"db"</span><span class="p">:</span> <span class="n">db</span><span class="p">,</span> <span class="s2">"catalog"</span><span class="p">:</span> <span class="n">catalog</span><span class="p">,</span> <span class="s2">"schema"</span><span class="p">:</span> <span class="n">schema</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">}</span> -</span><span id="optimize-84"><a href="#optimize-84"><span class="linenos">84</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">maybe_parse</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dialect</span><span class="o">=</span><span class="n">dialect</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> -</span><span id="optimize-85"><a href="#optimize-85"><span class="linenos">85</span></a> <span class="k">for</span> <span class="n">rule</span> <span class="ow">in</span> <span class="n">rules</span><span class="p">:</span> -</span><span id="optimize-86"><a href="#optimize-86"><span class="linenos">86</span></a> <span class="c1"># Find any additional rule parameters, beyond `expression`</span> -</span><span id="optimize-87"><a href="#optimize-87"><span class="linenos">87</span></a> <span class="n">rule_params</span> <span class="o">=</span> <span class="n">rule</span><span class="o">.</span><span class="vm">__code__</span><span class="o">.</span><span class="n">co_varnames</span> -</span><span id="optimize-88"><a href="#optimize-88"><span class="linenos">88</span></a> <span class="n">rule_kwargs</span> <span class="o">=</span> <span class="p">{</span> -</span><span id="optimize-89"><a href="#optimize-89"><span class="linenos">89</span></a> <span class="n">param</span><span class="p">:</span> <span class="n">possible_kwargs</span><span class="p">[</span><span class="n">param</span><span class="p">]</span> <span class="k">for</span> <span class="n">param</span> <span class="ow">in</span> <span class="n">rule_params</span> <span class="k">if</span> <span class="n">param</span> <span class="ow">in</span> <span class="n">possible_kwargs</span> -</span><span id="optimize-90"><a href="#optimize-90"><span class="linenos">90</span></a> <span class="p">}</span> -</span><span id="optimize-91"><a href="#optimize-91"><span class="linenos">91</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">rule</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="o">**</span><span class="n">rule_kwargs</span><span class="p">)</span> -</span><span id="optimize-92"><a href="#optimize-92"><span class="linenos">92</span></a> <span class="k">return</span> <span class="n">expression</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="optimize-52"><a href="#optimize-52"><span class="linenos">52</span></a><span class="k">def</span> <span class="nf">optimize</span><span class="p">(</span> +</span><span id="optimize-53"><a href="#optimize-53"><span class="linenos">53</span></a> <span class="n">expression</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">,</span> +</span><span id="optimize-54"><a href="#optimize-54"><span class="linenos">54</span></a> <span class="n">schema</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="nb">dict</span> <span class="o">|</span> <span class="n">Schema</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> +</span><span id="optimize-55"><a href="#optimize-55"><span class="linenos">55</span></a> <span class="n">db</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> +</span><span id="optimize-56"><a href="#optimize-56"><span class="linenos">56</span></a> <span class="n">catalog</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> +</span><span id="optimize-57"><a href="#optimize-57"><span class="linenos">57</span></a> <span class="n">dialect</span><span class="p">:</span> <span class="n">DialectType</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> +</span><span id="optimize-58"><a href="#optimize-58"><span class="linenos">58</span></a> <span class="n">rules</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Sequence</span><span class="p">[</span><span class="n">t</span><span class="o">.</span><span class="n">Callable</span><span class="p">]</span> <span class="o">=</span> <span class="n">RULES</span><span class="p">,</span> +</span><span id="optimize-59"><a href="#optimize-59"><span class="linenos">59</span></a> <span class="o">**</span><span class="n">kwargs</span><span class="p">,</span> +</span><span id="optimize-60"><a href="#optimize-60"><span class="linenos">60</span></a><span class="p">):</span> +</span><span id="optimize-61"><a href="#optimize-61"><span class="linenos">61</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="optimize-62"><a href="#optimize-62"><span class="linenos">62</span></a><span class="sd"> Rewrite a sqlglot AST into an optimized form.</span> +</span><span id="optimize-63"><a href="#optimize-63"><span class="linenos">63</span></a> +</span><span id="optimize-64"><a href="#optimize-64"><span class="linenos">64</span></a><span class="sd"> Args:</span> +</span><span id="optimize-65"><a href="#optimize-65"><span class="linenos">65</span></a><span class="sd"> expression: expression to optimize</span> +</span><span id="optimize-66"><a href="#optimize-66"><span class="linenos">66</span></a><span class="sd"> schema: database schema.</span> +</span><span id="optimize-67"><a href="#optimize-67"><span class="linenos">67</span></a><span class="sd"> This can either be an instance of `sqlglot.optimizer.Schema` or a mapping in one of</span> +</span><span id="optimize-68"><a href="#optimize-68"><span class="linenos">68</span></a><span class="sd"> the following forms:</span> +</span><span id="optimize-69"><a href="#optimize-69"><span class="linenos">69</span></a><span class="sd"> 1. {table: {col: type}}</span> +</span><span id="optimize-70"><a href="#optimize-70"><span class="linenos">70</span></a><span class="sd"> 2. {db: {table: {col: type}}}</span> +</span><span id="optimize-71"><a href="#optimize-71"><span class="linenos">71</span></a><span class="sd"> 3. {catalog: {db: {table: {col: type}}}}</span> +</span><span id="optimize-72"><a href="#optimize-72"><span class="linenos">72</span></a><span class="sd"> If no schema is provided then the default schema defined at `sqlgot.schema` will be used</span> +</span><span id="optimize-73"><a href="#optimize-73"><span class="linenos">73</span></a><span class="sd"> db: specify the default database, as might be set by a `USE DATABASE db` statement</span> +</span><span id="optimize-74"><a href="#optimize-74"><span class="linenos">74</span></a><span class="sd"> catalog: specify the default catalog, as might be set by a `USE CATALOG c` statement</span> +</span><span id="optimize-75"><a href="#optimize-75"><span class="linenos">75</span></a><span class="sd"> dialect: The dialect to parse the sql string.</span> +</span><span id="optimize-76"><a href="#optimize-76"><span class="linenos">76</span></a><span class="sd"> rules: sequence of optimizer rules to use.</span> +</span><span id="optimize-77"><a href="#optimize-77"><span class="linenos">77</span></a><span class="sd"> Many of the rules require tables and columns to be qualified.</span> +</span><span id="optimize-78"><a href="#optimize-78"><span class="linenos">78</span></a><span class="sd"> Do not remove qualify_tables or qualify_columns from the sequence of rules unless you know</span> +</span><span id="optimize-79"><a href="#optimize-79"><span class="linenos">79</span></a><span class="sd"> what you're doing!</span> +</span><span id="optimize-80"><a href="#optimize-80"><span class="linenos">80</span></a><span class="sd"> **kwargs: If a rule has a keyword argument with a same name in **kwargs, it will be passed in.</span> +</span><span id="optimize-81"><a href="#optimize-81"><span class="linenos">81</span></a><span class="sd"> Returns:</span> +</span><span id="optimize-82"><a href="#optimize-82"><span class="linenos">82</span></a><span class="sd"> sqlglot.Expression: optimized expression</span> +</span><span id="optimize-83"><a href="#optimize-83"><span class="linenos">83</span></a><span class="sd"> """</span> +</span><span id="optimize-84"><a href="#optimize-84"><span class="linenos">84</span></a> <span class="n">schema</span> <span class="o">=</span> <span class="n">ensure_schema</span><span class="p">(</span><span class="n">schema</span> <span class="ow">or</span> <span class="n">sqlglot</span><span class="o">.</span><span class="n">schema</span><span class="p">,</span> <span class="n">dialect</span><span class="o">=</span><span class="n">dialect</span><span class="p">)</span> +</span><span id="optimize-85"><a href="#optimize-85"><span class="linenos">85</span></a> <span class="n">possible_kwargs</span> <span class="o">=</span> <span class="p">{</span><span class="s2">"db"</span><span class="p">:</span> <span class="n">db</span><span class="p">,</span> <span class="s2">"catalog"</span><span class="p">:</span> <span class="n">catalog</span><span class="p">,</span> <span class="s2">"schema"</span><span class="p">:</span> <span class="n">schema</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">}</span> +</span><span id="optimize-86"><a href="#optimize-86"><span class="linenos">86</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">maybe_parse</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">dialect</span><span class="o">=</span><span class="n">dialect</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> +</span><span id="optimize-87"><a href="#optimize-87"><span class="linenos">87</span></a> <span class="k">for</span> <span class="n">rule</span> <span class="ow">in</span> <span class="n">rules</span><span class="p">:</span> +</span><span id="optimize-88"><a href="#optimize-88"><span class="linenos">88</span></a> <span class="c1"># Find any additional rule parameters, beyond `expression`</span> +</span><span id="optimize-89"><a href="#optimize-89"><span class="linenos">89</span></a> <span class="n">rule_params</span> <span class="o">=</span> <span class="n">rule</span><span class="o">.</span><span class="vm">__code__</span><span class="o">.</span><span class="n">co_varnames</span> +</span><span id="optimize-90"><a href="#optimize-90"><span class="linenos">90</span></a> <span class="n">rule_kwargs</span> <span class="o">=</span> <span class="p">{</span> +</span><span id="optimize-91"><a href="#optimize-91"><span class="linenos">91</span></a> <span class="n">param</span><span class="p">:</span> <span class="n">possible_kwargs</span><span class="p">[</span><span class="n">param</span><span class="p">]</span> <span class="k">for</span> <span class="n">param</span> <span class="ow">in</span> <span class="n">rule_params</span> <span class="k">if</span> <span class="n">param</span> <span class="ow">in</span> <span class="n">possible_kwargs</span> +</span><span id="optimize-92"><a href="#optimize-92"><span class="linenos">92</span></a> <span class="p">}</span> +</span><span id="optimize-93"><a href="#optimize-93"><span class="linenos">93</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">rule</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="o">**</span><span class="n">rule_kwargs</span><span class="p">)</span> +</span><span id="optimize-94"><a href="#optimize-94"><span class="linenos">94</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> diff --git a/docs/sqlglot/optimizer/pushdown_predicates.html b/docs/sqlglot/optimizer/pushdown_predicates.html index f69a006..f9371f4 100644 --- a/docs/sqlglot/optimizer/pushdown_predicates.html +++ b/docs/sqlglot/optimizer/pushdown_predicates.html @@ -3,7 +3,7 @@ <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> - <meta name="generator" content="pdoc 13.0.0"/> + <meta name="generator" content="pdoc 13.0.1"/> <title>sqlglot.optimizer.pushdown_predicates API documentation</title> <style>/*! * Bootstrap Reboot v5.0.0 (https://getbootstrap.com/) * Copyright 2011-2021 The Bootstrap Authors * Copyright 2011-2021 Twitter, Inc. * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE) * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md) */*,::after,::before{box-sizing:border-box}@media (prefers-reduced-motion:no-preference){:root{scroll-behavior:smooth}}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica 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code{font-size:inherit;color:inherit;word-break:normal}code{font-size:.875em;color:#d63384;word-wrap:break-word}a>code{color:inherit}kbd{padding:.2rem .4rem;font-size:.875em;color:#fff;background-color:#212529;border-radius:.2rem}kbd kbd{padding:0;font-size:1em;font-weight:700}figure{margin:0 0 1rem}img,svg{vertical-align:middle}table{caption-side:bottom;border-collapse:collapse}caption{padding-top:.5rem;padding-bottom:.5rem;color:#6c757d;text-align:left}th{text-align:inherit;text-align:-webkit-match-parent}tbody,td,tfoot,th,thead,tr{border-color:inherit;border-style:solid;border-width:0}label{display:inline-block}button{border-radius:0}button:focus:not(:focus-visible){outline:0}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,select{text-transform:none}[role=button]{cursor:pointer}select{word-wrap:normal}select:disabled{opacity:1}[list]::-webkit-calendar-picker-indicator{display:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]:not(:disabled),[type=reset]:not(:disabled),[type=submit]:not(:disabled),button:not(:disabled){cursor:pointer}::-moz-focus-inner{padding:0;border-style:none}textarea{resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{float:left;width:100%;padding:0;margin-bottom:.5rem;font-size:calc(1.275rem + .3vw);line-height:inherit}@media (min-width:1200px){legend{font-size:1.5rem}}legend+*{clear:left}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-fields-wrapper,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-text,::-webkit-datetime-edit-year-field{padding:0}::-webkit-inner-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:textfield}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-color-swatch-wrapper{padding:0}::file-selector-button{font:inherit}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}iframe{border:0}summary{display:list-item;cursor:pointer}progress{vertical-align:baseline}[hidden]{display:none!important}</style> @@ -28,8 +28,8 @@ - <h2>API Documentation</h2> - <ul class="memberlist"> + <h2>API Documentation</h2> + <ul class="memberlist"> <li> <a class="function" href="#pushdown_predicates">pushdown_predicates</a> </li> diff --git a/docs/sqlglot/optimizer/pushdown_projections.html b/docs/sqlglot/optimizer/pushdown_projections.html index f0de386..18ac794 100644 --- a/docs/sqlglot/optimizer/pushdown_projections.html +++ b/docs/sqlglot/optimizer/pushdown_projections.html @@ -3,7 +3,7 @@ <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> - <meta name="generator" content="pdoc 13.0.0"/> + <meta name="generator" content="pdoc 13.0.1"/> <title>sqlglot.optimizer.pushdown_projections API documentation</title> <style>/*! * Bootstrap Reboot v5.0.0 (https://getbootstrap.com/) * Copyright 2011-2021 The Bootstrap Authors * Copyright 2011-2021 Twitter, Inc. * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE) * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md) */*,::after,::before{box-sizing:border-box}@media (prefers-reduced-motion:no-preference){:root{scroll-behavior:smooth}}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","Liberation Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";font-size:1rem;font-weight:400;line-height:1.5;color:#212529;background-color:#fff;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}hr{margin:1rem 0;color:inherit;background-color:currentColor;border:0;opacity:.25}hr:not([size]){height:1px}h1,h2,h3,h4,h5,h6{margin-top:0;margin-bottom:.5rem;font-weight:500;line-height:1.2}h1{font-size:calc(1.375rem + 1.5vw)}@media (min-width:1200px){h1{font-size:2.5rem}}h2{font-size:calc(1.325rem + .9vw)}@media (min-width:1200px){h2{font-size:2rem}}h3{font-size:calc(1.3rem + .6vw)}@media (min-width:1200px){h3{font-size:1.75rem}}h4{font-size:calc(1.275rem + .3vw)}@media (min-width:1200px){h4{font-size:1.5rem}}h5{font-size:1.25rem}h6{font-size:1rem}p{margin-top:0;margin-bottom:1rem}abbr[data-bs-original-title],abbr[title]{-webkit-text-decoration:underline dotted;text-decoration:underline dotted;cursor:help;-webkit-text-decoration-skip-ink:none;text-decoration-skip-ink:none}address{margin-bottom:1rem;font-style:normal;line-height:inherit}ol,ul{padding-left:2rem}dl,ol,ul{margin-top:0;margin-bottom:1rem}ol ol,ol ul,ul ol,ul ul{margin-bottom:0}dt{font-weight:700}dd{margin-bottom:.5rem;margin-left:0}blockquote{margin:0 0 1rem}b,strong{font-weight:bolder}small{font-size:.875em}mark{padding:.2em;background-color:#fcf8e3}sub,sup{position:relative;font-size:.75em;line-height:0;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}a{color:#0d6efd;text-decoration:underline}a:hover{color:#0a58ca}a:not([href]):not([class]),a:not([href]):not([class]):hover{color:inherit;text-decoration:none}code,kbd,pre,samp{font-family:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;font-size:1em;direction:ltr;unicode-bidi:bidi-override}pre{display:block;margin-top:0;margin-bottom:1rem;overflow:auto;font-size:.875em}pre code{font-size:inherit;color:inherit;word-break:normal}code{font-size:.875em;color:#d63384;word-wrap:break-word}a>code{color:inherit}kbd{padding:.2rem .4rem;font-size:.875em;color:#fff;background-color:#212529;border-radius:.2rem}kbd kbd{padding:0;font-size:1em;font-weight:700}figure{margin:0 0 1rem}img,svg{vertical-align:middle}table{caption-side:bottom;border-collapse:collapse}caption{padding-top:.5rem;padding-bottom:.5rem;color:#6c757d;text-align:left}th{text-align:inherit;text-align:-webkit-match-parent}tbody,td,tfoot,th,thead,tr{border-color:inherit;border-style:solid;border-width:0}label{display:inline-block}button{border-radius:0}button:focus:not(:focus-visible){outline:0}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,select{text-transform:none}[role=button]{cursor:pointer}select{word-wrap:normal}select:disabled{opacity:1}[list]::-webkit-calendar-picker-indicator{display:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]:not(:disabled),[type=reset]:not(:disabled),[type=submit]:not(:disabled),button:not(:disabled){cursor:pointer}::-moz-focus-inner{padding:0;border-style:none}textarea{resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{float:left;width:100%;padding:0;margin-bottom:.5rem;font-size:calc(1.275rem + .3vw);line-height:inherit}@media (min-width:1200px){legend{font-size:1.5rem}}legend+*{clear:left}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-fields-wrapper,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-text,::-webkit-datetime-edit-year-field{padding:0}::-webkit-inner-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:textfield}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-color-swatch-wrapper{padding:0}::file-selector-button{font:inherit}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}iframe{border:0}summary{display:list-item;cursor:pointer}progress{vertical-align:baseline}[hidden]{display:none!important}</style> @@ -28,8 +28,8 @@ - <h2>API Documentation</h2> - <ul class="memberlist"> + <h2>API Documentation</h2> + <ul class="memberlist"> <li> <a class="function" href="#DEFAULT_SELECTION">DEFAULT_SELECTION</a> </li> diff --git a/docs/sqlglot/optimizer/qualify_columns.html b/docs/sqlglot/optimizer/qualify_columns.html index 8de0b29..2211a0b 100644 --- a/docs/sqlglot/optimizer/qualify_columns.html +++ b/docs/sqlglot/optimizer/qualify_columns.html @@ -3,7 +3,7 @@ <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> - <meta name="generator" content="pdoc 13.0.0"/> + <meta name="generator" content="pdoc 13.0.1"/> <title>sqlglot.optimizer.qualify_columns API documentation</title> <style>/*! * Bootstrap Reboot v5.0.0 (https://getbootstrap.com/) * Copyright 2011-2021 The Bootstrap Authors * Copyright 2011-2021 Twitter, Inc. * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE) * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md) */*,::after,::before{box-sizing:border-box}@media (prefers-reduced-motion:no-preference){:root{scroll-behavior:smooth}}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","Liberation Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";font-size:1rem;font-weight:400;line-height:1.5;color:#212529;background-color:#fff;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}hr{margin:1rem 0;color:inherit;background-color:currentColor;border:0;opacity:.25}hr:not([size]){height:1px}h1,h2,h3,h4,h5,h6{margin-top:0;margin-bottom:.5rem;font-weight:500;line-height:1.2}h1{font-size:calc(1.375rem + 1.5vw)}@media (min-width:1200px){h1{font-size:2.5rem}}h2{font-size:calc(1.325rem + .9vw)}@media (min-width:1200px){h2{font-size:2rem}}h3{font-size:calc(1.3rem + .6vw)}@media (min-width:1200px){h3{font-size:1.75rem}}h4{font-size:calc(1.275rem + .3vw)}@media (min-width:1200px){h4{font-size:1.5rem}}h5{font-size:1.25rem}h6{font-size:1rem}p{margin-top:0;margin-bottom:1rem}abbr[data-bs-original-title],abbr[title]{-webkit-text-decoration:underline dotted;text-decoration:underline dotted;cursor:help;-webkit-text-decoration-skip-ink:none;text-decoration-skip-ink:none}address{margin-bottom:1rem;font-style:normal;line-height:inherit}ol,ul{padding-left:2rem}dl,ol,ul{margin-top:0;margin-bottom:1rem}ol ol,ol ul,ul ol,ul ul{margin-bottom:0}dt{font-weight:700}dd{margin-bottom:.5rem;margin-left:0}blockquote{margin:0 0 1rem}b,strong{font-weight:bolder}small{font-size:.875em}mark{padding:.2em;background-color:#fcf8e3}sub,sup{position:relative;font-size:.75em;line-height:0;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}a{color:#0d6efd;text-decoration:underline}a:hover{color:#0a58ca}a:not([href]):not([class]),a:not([href]):not([class]):hover{color:inherit;text-decoration:none}code,kbd,pre,samp{font-family:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;font-size:1em;direction:ltr;unicode-bidi:bidi-override}pre{display:block;margin-top:0;margin-bottom:1rem;overflow:auto;font-size:.875em}pre code{font-size:inherit;color:inherit;word-break:normal}code{font-size:.875em;color:#d63384;word-wrap:break-word}a>code{color:inherit}kbd{padding:.2rem .4rem;font-size:.875em;color:#fff;background-color:#212529;border-radius:.2rem}kbd kbd{padding:0;font-size:1em;font-weight:700}figure{margin:0 0 1rem}img,svg{vertical-align:middle}table{caption-side:bottom;border-collapse:collapse}caption{padding-top:.5rem;padding-bottom:.5rem;color:#6c757d;text-align:left}th{text-align:inherit;text-align:-webkit-match-parent}tbody,td,tfoot,th,thead,tr{border-color:inherit;border-style:solid;border-width:0}label{display:inline-block}button{border-radius:0}button:focus:not(:focus-visible){outline:0}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,select{text-transform:none}[role=button]{cursor:pointer}select{word-wrap:normal}select:disabled{opacity:1}[list]::-webkit-calendar-picker-indicator{display:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]:not(:disabled),[type=reset]:not(:disabled),[type=submit]:not(:disabled),button:not(:disabled){cursor:pointer}::-moz-focus-inner{padding:0;border-style:none}textarea{resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{float:left;width:100%;padding:0;margin-bottom:.5rem;font-size:calc(1.275rem + .3vw);line-height:inherit}@media (min-width:1200px){legend{font-size:1.5rem}}legend+*{clear:left}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-fields-wrapper,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-text,::-webkit-datetime-edit-year-field{padding:0}::-webkit-inner-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:textfield}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-color-swatch-wrapper{padding:0}::file-selector-button{font:inherit}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}iframe{border:0}summary{display:list-item;cursor:pointer}progress{vertical-align:baseline}[hidden]{display:none!important}</style> @@ -28,8 +28,8 @@ - <h2>API Documentation</h2> - <ul class="memberlist"> + <h2>API Documentation</h2> + <ul class="memberlist"> <li> <a class="function" href="#qualify_columns">qualify_columns</a> </li> @@ -109,462 +109,489 @@ </span><span id="L-30"><a href="#L-30"><span class="linenos"> 30</span></a> <span class="n">resolver</span> <span class="o">=</span> <span class="n">Resolver</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">)</span> </span><span id="L-31"><a href="#L-31"><span class="linenos"> 31</span></a> <span class="n">_pop_table_column_aliases</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">ctes</span><span class="p">)</span> </span><span id="L-32"><a href="#L-32"><span class="linenos"> 32</span></a> <span class="n">_pop_table_column_aliases</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">derived_tables</span><span class="p">)</span> -</span><span id="L-33"><a href="#L-33"><span class="linenos"> 33</span></a> <span class="n">_expand_using</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="L-33"><a href="#L-33"><span class="linenos"> 33</span></a> <span class="n">using_column_tables</span> <span class="o">=</span> <span class="n">_expand_using</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> </span><span id="L-34"><a href="#L-34"><span class="linenos"> 34</span></a> <span class="n">_qualify_columns</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> </span><span id="L-35"><a href="#L-35"><span class="linenos"> 35</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">):</span> -</span><span id="L-36"><a href="#L-36"><span class="linenos"> 36</span></a> <span class="n">_expand_stars</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="L-36"><a href="#L-36"><span class="linenos"> 36</span></a> <span class="n">_expand_stars</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">,</span> <span class="n">using_column_tables</span><span class="p">)</span> </span><span id="L-37"><a href="#L-37"><span class="linenos"> 37</span></a> <span class="n">_qualify_outputs</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> -</span><span id="L-38"><a href="#L-38"><span class="linenos"> 38</span></a> <span class="n">_expand_group_by</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> -</span><span id="L-39"><a href="#L-39"><span class="linenos"> 39</span></a> <span class="n">_expand_order_by</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> -</span><span id="L-40"><a href="#L-40"><span class="linenos"> 40</span></a> -</span><span id="L-41"><a href="#L-41"><span class="linenos"> 41</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-42"><a href="#L-42"><span class="linenos"> 42</span></a> +</span><span id="L-38"><a href="#L-38"><span class="linenos"> 38</span></a> <span class="n">_expand_alias_refs</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="L-39"><a href="#L-39"><span class="linenos"> 39</span></a> <span class="n">_expand_group_by</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="L-40"><a href="#L-40"><span class="linenos"> 40</span></a> <span class="n">_expand_order_by</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> +</span><span id="L-41"><a href="#L-41"><span class="linenos"> 41</span></a> +</span><span id="L-42"><a href="#L-42"><span class="linenos"> 42</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="L-43"><a href="#L-43"><span class="linenos"> 43</span></a> -</span><span id="L-44"><a href="#L-44"><span class="linenos"> 44</span></a><span class="k">def</span> <span class="nf">validate_qualify_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-45"><a href="#L-45"><span class="linenos"> 45</span></a><span class="w"> </span><span class="sd">"""Raise an `OptimizeError` if any columns aren't qualified"""</span> -</span><span id="L-46"><a href="#L-46"><span class="linenos"> 46</span></a> <span class="n">unqualified_columns</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-47"><a href="#L-47"><span class="linenos"> 47</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-48"><a href="#L-48"><span class="linenos"> 48</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> -</span><span id="L-49"><a href="#L-49"><span class="linenos"> 49</span></a> <span class="n">unqualified_columns</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">unqualified_columns</span><span class="p">)</span> -</span><span id="L-50"><a href="#L-50"><span class="linenos"> 50</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">external_columns</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">is_correlated_subquery</span><span class="p">:</span> -</span><span id="L-51"><a href="#L-51"><span class="linenos"> 51</span></a> <span class="n">column</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">external_columns</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> -</span><span id="L-52"><a href="#L-52"><span class="linenos"> 52</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: '</span><span class="si">{</span><span class="n">column</span><span class="o">.</span><span class="n">table</span><span class="si">}</span><span class="s2">' for column '</span><span class="si">{</span><span class="n">column</span><span class="si">}</span><span class="s2">'"</span><span class="p">)</span> -</span><span id="L-53"><a href="#L-53"><span class="linenos"> 53</span></a> -</span><span id="L-54"><a href="#L-54"><span class="linenos"> 54</span></a> <span class="k">if</span> <span class="n">unqualified_columns</span><span class="p">:</span> -</span><span id="L-55"><a href="#L-55"><span class="linenos"> 55</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Ambiguous columns: </span><span class="si">{</span><span class="n">unqualified_columns</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="L-56"><a href="#L-56"><span class="linenos"> 56</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-57"><a href="#L-57"><span class="linenos"> 57</span></a> +</span><span id="L-44"><a href="#L-44"><span class="linenos"> 44</span></a> +</span><span id="L-45"><a href="#L-45"><span class="linenos"> 45</span></a><span class="k">def</span> <span class="nf">validate_qualify_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-46"><a href="#L-46"><span class="linenos"> 46</span></a><span class="w"> </span><span class="sd">"""Raise an `OptimizeError` if any columns aren't qualified"""</span> +</span><span id="L-47"><a href="#L-47"><span class="linenos"> 47</span></a> <span class="n">unqualified_columns</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-48"><a href="#L-48"><span class="linenos"> 48</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-49"><a href="#L-49"><span class="linenos"> 49</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> +</span><span id="L-50"><a href="#L-50"><span class="linenos"> 50</span></a> <span class="n">unqualified_columns</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">unqualified_columns</span><span class="p">)</span> +</span><span id="L-51"><a href="#L-51"><span class="linenos"> 51</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">external_columns</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">is_correlated_subquery</span><span class="p">:</span> +</span><span id="L-52"><a href="#L-52"><span class="linenos"> 52</span></a> <span class="n">column</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">external_columns</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> +</span><span id="L-53"><a href="#L-53"><span class="linenos"> 53</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: '</span><span class="si">{</span><span class="n">column</span><span class="o">.</span><span class="n">table</span><span class="si">}</span><span class="s2">' for column '</span><span class="si">{</span><span class="n">column</span><span class="si">}</span><span class="s2">'"</span><span class="p">)</span> +</span><span id="L-54"><a href="#L-54"><span class="linenos"> 54</span></a> +</span><span id="L-55"><a href="#L-55"><span class="linenos"> 55</span></a> <span class="k">if</span> <span class="n">unqualified_columns</span><span class="p">:</span> +</span><span id="L-56"><a href="#L-56"><span class="linenos"> 56</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Ambiguous columns: </span><span class="si">{</span><span class="n">unqualified_columns</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="L-57"><a href="#L-57"><span class="linenos"> 57</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="L-58"><a href="#L-58"><span class="linenos"> 58</span></a> -</span><span id="L-59"><a href="#L-59"><span class="linenos"> 59</span></a><span class="k">def</span> <span class="nf">_pop_table_column_aliases</span><span class="p">(</span><span class="n">derived_tables</span><span class="p">):</span> -</span><span id="L-60"><a href="#L-60"><span class="linenos"> 60</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-61"><a href="#L-61"><span class="linenos"> 61</span></a><span class="sd"> Remove table column aliases.</span> -</span><span id="L-62"><a href="#L-62"><span class="linenos"> 62</span></a> -</span><span id="L-63"><a href="#L-63"><span class="linenos"> 63</span></a><span class="sd"> (e.g. SELECT ... FROM (SELECT ...) AS foo(col1, col2)</span> -</span><span id="L-64"><a href="#L-64"><span class="linenos"> 64</span></a><span class="sd"> """</span> -</span><span id="L-65"><a href="#L-65"><span class="linenos"> 65</span></a> <span class="k">for</span> <span class="n">derived_table</span> <span class="ow">in</span> <span class="n">derived_tables</span><span class="p">:</span> -</span><span id="L-66"><a href="#L-66"><span class="linenos"> 66</span></a> <span class="n">table_alias</span> <span class="o">=</span> <span class="n">derived_table</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> -</span><span id="L-67"><a href="#L-67"><span class="linenos"> 67</span></a> <span class="k">if</span> <span class="n">table_alias</span><span class="p">:</span> -</span><span id="L-68"><a href="#L-68"><span class="linenos"> 68</span></a> <span class="n">table_alias</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"columns"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> -</span><span id="L-69"><a href="#L-69"><span class="linenos"> 69</span></a> +</span><span id="L-59"><a href="#L-59"><span class="linenos"> 59</span></a> +</span><span id="L-60"><a href="#L-60"><span class="linenos"> 60</span></a><span class="k">def</span> <span class="nf">_pop_table_column_aliases</span><span class="p">(</span><span class="n">derived_tables</span><span class="p">):</span> +</span><span id="L-61"><a href="#L-61"><span class="linenos"> 61</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-62"><a href="#L-62"><span class="linenos"> 62</span></a><span class="sd"> Remove table column aliases.</span> +</span><span id="L-63"><a href="#L-63"><span class="linenos"> 63</span></a> +</span><span id="L-64"><a href="#L-64"><span class="linenos"> 64</span></a><span class="sd"> (e.g. SELECT ... FROM (SELECT ...) AS foo(col1, col2)</span> +</span><span id="L-65"><a href="#L-65"><span class="linenos"> 65</span></a><span class="sd"> """</span> +</span><span id="L-66"><a href="#L-66"><span class="linenos"> 66</span></a> <span class="k">for</span> <span class="n">derived_table</span> <span class="ow">in</span> <span class="n">derived_tables</span><span class="p">:</span> +</span><span id="L-67"><a href="#L-67"><span class="linenos"> 67</span></a> <span class="n">table_alias</span> <span class="o">=</span> <span class="n">derived_table</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> +</span><span id="L-68"><a href="#L-68"><span class="linenos"> 68</span></a> <span class="k">if</span> <span class="n">table_alias</span><span class="p">:</span> +</span><span id="L-69"><a href="#L-69"><span class="linenos"> 69</span></a> <span class="n">table_alias</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"columns"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> </span><span id="L-70"><a href="#L-70"><span class="linenos"> 70</span></a> -</span><span id="L-71"><a href="#L-71"><span class="linenos"> 71</span></a><span class="k">def</span> <span class="nf">_expand_using</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">):</span> -</span><span id="L-72"><a href="#L-72"><span class="linenos"> 72</span></a> <span class="n">joins</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">))</span> -</span><span id="L-73"><a href="#L-73"><span class="linenos"> 73</span></a> <span class="n">names</span> <span class="o">=</span> <span class="p">{</span><span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">alias</span> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">joins</span><span class="p">}</span> -</span><span id="L-74"><a href="#L-74"><span class="linenos"> 74</span></a> <span class="n">ordered</span> <span class="o">=</span> <span class="p">[</span><span class="n">key</span> <span class="k">for</span> <span class="n">key</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span> <span class="k">if</span> <span class="n">key</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">names</span><span class="p">]</span> -</span><span id="L-75"><a href="#L-75"><span class="linenos"> 75</span></a> -</span><span id="L-76"><a href="#L-76"><span class="linenos"> 76</span></a> <span class="c1"># Mapping of automatically joined column names to source names</span> -</span><span id="L-77"><a href="#L-77"><span class="linenos"> 77</span></a> <span class="n">column_tables</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="L-78"><a href="#L-78"><span class="linenos"> 78</span></a> -</span><span id="L-79"><a href="#L-79"><span class="linenos"> 79</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">joins</span><span class="p">:</span> -</span><span id="L-80"><a href="#L-80"><span class="linenos"> 80</span></a> <span class="n">using</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"using"</span><span class="p">)</span> -</span><span id="L-81"><a href="#L-81"><span class="linenos"> 81</span></a> -</span><span id="L-82"><a href="#L-82"><span class="linenos"> 82</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">using</span><span class="p">:</span> -</span><span id="L-83"><a href="#L-83"><span class="linenos"> 83</span></a> <span class="k">continue</span> -</span><span id="L-84"><a href="#L-84"><span class="linenos"> 84</span></a> -</span><span id="L-85"><a href="#L-85"><span class="linenos"> 85</span></a> <span class="n">join_table</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">alias_or_name</span> -</span><span id="L-86"><a href="#L-86"><span class="linenos"> 86</span></a> -</span><span id="L-87"><a href="#L-87"><span class="linenos"> 87</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="L-88"><a href="#L-88"><span class="linenos"> 88</span></a> -</span><span id="L-89"><a href="#L-89"><span class="linenos"> 89</span></a> <span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">:</span> -</span><span id="L-90"><a href="#L-90"><span class="linenos"> 90</span></a> <span class="k">if</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">ordered</span><span class="p">:</span> -</span><span id="L-91"><a href="#L-91"><span class="linenos"> 91</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">k</span><span class="p">):</span> -</span><span id="L-92"><a href="#L-92"><span class="linenos"> 92</span></a> <span class="k">if</span> <span class="n">column</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> -</span><span id="L-93"><a href="#L-93"><span class="linenos"> 93</span></a> <span class="n">columns</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">k</span> -</span><span id="L-94"><a href="#L-94"><span class="linenos"> 94</span></a> -</span><span id="L-95"><a href="#L-95"><span class="linenos"> 95</span></a> <span class="n">ordered</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">join_table</span><span class="p">)</span> -</span><span id="L-96"><a href="#L-96"><span class="linenos"> 96</span></a> <span class="n">join_columns</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">join_table</span><span class="p">)</span> -</span><span id="L-97"><a href="#L-97"><span class="linenos"> 97</span></a> <span class="n">conditions</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-98"><a href="#L-98"><span class="linenos"> 98</span></a> -</span><span id="L-99"><a href="#L-99"><span class="linenos"> 99</span></a> <span class="k">for</span> <span class="n">identifier</span> <span class="ow">in</span> <span class="n">using</span><span class="p">:</span> -</span><span id="L-100"><a href="#L-100"><span class="linenos">100</span></a> <span class="n">identifier</span> <span class="o">=</span> <span class="n">identifier</span><span class="o">.</span><span class="n">name</span> -</span><span id="L-101"><a href="#L-101"><span class="linenos">101</span></a> <span class="n">table</span> <span class="o">=</span> <span class="n">columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">identifier</span><span class="p">)</span> -</span><span id="L-102"><a href="#L-102"><span class="linenos">102</span></a> -</span><span id="L-103"><a href="#L-103"><span class="linenos">103</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table</span> <span class="ow">or</span> <span class="n">identifier</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">join_columns</span><span class="p">:</span> -</span><span id="L-104"><a href="#L-104"><span class="linenos">104</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Cannot automatically join: </span><span class="si">{</span><span class="n">identifier</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="L-105"><a href="#L-105"><span class="linenos">105</span></a> -</span><span id="L-106"><a href="#L-106"><span class="linenos">106</span></a> <span class="n">conditions</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> -</span><span id="L-107"><a href="#L-107"><span class="linenos">107</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">condition</span><span class="p">(</span> -</span><span id="L-108"><a href="#L-108"><span class="linenos">108</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">(</span> -</span><span id="L-109"><a href="#L-109"><span class="linenos">109</span></a> <span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">identifier</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">table</span><span class="p">),</span> -</span><span id="L-110"><a href="#L-110"><span class="linenos">110</span></a> <span class="n">expression</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">identifier</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">join_table</span><span class="p">),</span> -</span><span id="L-111"><a href="#L-111"><span class="linenos">111</span></a> <span class="p">)</span> -</span><span id="L-112"><a href="#L-112"><span class="linenos">112</span></a> <span class="p">)</span> -</span><span id="L-113"><a href="#L-113"><span class="linenos">113</span></a> <span class="p">)</span> -</span><span id="L-114"><a href="#L-114"><span class="linenos">114</span></a> -</span><span id="L-115"><a href="#L-115"><span class="linenos">115</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="n">column_tables</span><span class="o">.</span><span class="n">setdefault</span><span class="p">(</span><span class="n">identifier</span><span class="p">,</span> <span class="p">[])</span> -</span><span id="L-116"><a href="#L-116"><span class="linenos">116</span></a> <span class="k">if</span> <span class="n">table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> -</span><span id="L-117"><a href="#L-117"><span class="linenos">117</span></a> <span class="n">tables</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">table</span><span class="p">)</span> -</span><span id="L-118"><a href="#L-118"><span class="linenos">118</span></a> <span class="k">if</span> <span class="n">join_table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> -</span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a> <span class="n">tables</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">join_table</span><span class="p">)</span> -</span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a> -</span><span id="L-121"><a href="#L-121"><span class="linenos">121</span></a> <span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"using"</span><span class="p">)</span> -</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"on"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span><span class="o">*</span><span class="n">conditions</span><span class="p">))</span> -</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a> -</span><span id="L-124"><a href="#L-124"><span class="linenos">124</span></a> <span class="k">if</span> <span class="n">column_tables</span><span class="p">:</span> -</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span> -</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> <span class="ow">and</span> <span class="n">column</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">column_tables</span><span class="p">:</span> -</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="n">column_tables</span><span class="p">[</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">]</span> -</span><span id="L-128"><a href="#L-128"><span class="linenos">128</span></a> <span class="n">coalesce</span> <span class="o">=</span> <span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">table</span><span class="p">)</span> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">]</span> -</span><span id="L-129"><a href="#L-129"><span class="linenos">129</span></a> <span class="n">replacement</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">Coalesce</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">coalesce</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">expressions</span><span class="o">=</span><span class="n">coalesce</span><span class="p">[</span><span class="mi">1</span><span class="p">:])</span> -</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a> -</span><span id="L-131"><a href="#L-131"><span class="linenos">131</span></a> <span class="c1"># Ensure selects keep their output name</span> -</span><span id="L-132"><a href="#L-132"><span class="linenos">132</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">parent</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> -</span><span id="L-133"><a href="#L-133"><span class="linenos">133</span></a> <span class="n">replacement</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">alias_</span><span class="p">(</span><span class="n">replacement</span><span class="p">,</span> <span class="n">alias</span><span class="o">=</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> -</span><span id="L-134"><a href="#L-134"><span class="linenos">134</span></a> -</span><span id="L-135"><a href="#L-135"><span class="linenos">135</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="n">replacement</span><span class="p">)</span> +</span><span id="L-71"><a href="#L-71"><span class="linenos"> 71</span></a> +</span><span id="L-72"><a href="#L-72"><span class="linenos"> 72</span></a><span class="k">def</span> <span class="nf">_expand_using</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">):</span> +</span><span id="L-73"><a href="#L-73"><span class="linenos"> 73</span></a> <span class="n">joins</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">))</span> +</span><span id="L-74"><a href="#L-74"><span class="linenos"> 74</span></a> <span class="n">names</span> <span class="o">=</span> <span class="p">{</span><span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">alias</span> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">joins</span><span class="p">}</span> +</span><span id="L-75"><a href="#L-75"><span class="linenos"> 75</span></a> <span class="n">ordered</span> <span class="o">=</span> <span class="p">[</span><span class="n">key</span> <span class="k">for</span> <span class="n">key</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span> <span class="k">if</span> <span class="n">key</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">names</span><span class="p">]</span> +</span><span id="L-76"><a href="#L-76"><span class="linenos"> 76</span></a> +</span><span id="L-77"><a href="#L-77"><span class="linenos"> 77</span></a> <span class="c1"># Mapping of automatically joined column names to an ordered set of source names (dict).</span> +</span><span id="L-78"><a href="#L-78"><span class="linenos"> 78</span></a> <span class="n">column_tables</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="L-79"><a href="#L-79"><span class="linenos"> 79</span></a> +</span><span id="L-80"><a href="#L-80"><span class="linenos"> 80</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">joins</span><span class="p">:</span> +</span><span id="L-81"><a href="#L-81"><span class="linenos"> 81</span></a> <span class="n">using</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"using"</span><span class="p">)</span> +</span><span id="L-82"><a href="#L-82"><span class="linenos"> 82</span></a> +</span><span id="L-83"><a href="#L-83"><span class="linenos"> 83</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">using</span><span class="p">:</span> +</span><span id="L-84"><a href="#L-84"><span class="linenos"> 84</span></a> <span class="k">continue</span> +</span><span id="L-85"><a href="#L-85"><span class="linenos"> 85</span></a> +</span><span id="L-86"><a href="#L-86"><span class="linenos"> 86</span></a> <span class="n">join_table</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">alias_or_name</span> +</span><span id="L-87"><a href="#L-87"><span class="linenos"> 87</span></a> +</span><span id="L-88"><a href="#L-88"><span class="linenos"> 88</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="L-89"><a href="#L-89"><span class="linenos"> 89</span></a> +</span><span id="L-90"><a href="#L-90"><span class="linenos"> 90</span></a> <span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">:</span> +</span><span id="L-91"><a href="#L-91"><span class="linenos"> 91</span></a> <span class="k">if</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">ordered</span><span class="p">:</span> +</span><span id="L-92"><a href="#L-92"><span class="linenos"> 92</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">k</span><span class="p">):</span> +</span><span id="L-93"><a href="#L-93"><span class="linenos"> 93</span></a> <span class="k">if</span> <span class="n">column</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> +</span><span id="L-94"><a href="#L-94"><span class="linenos"> 94</span></a> <span class="n">columns</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">k</span> +</span><span id="L-95"><a href="#L-95"><span class="linenos"> 95</span></a> +</span><span id="L-96"><a href="#L-96"><span class="linenos"> 96</span></a> <span class="n">ordered</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">join_table</span><span class="p">)</span> +</span><span id="L-97"><a href="#L-97"><span class="linenos"> 97</span></a> <span class="n">join_columns</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">join_table</span><span class="p">)</span> +</span><span id="L-98"><a href="#L-98"><span class="linenos"> 98</span></a> <span class="n">conditions</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-99"><a href="#L-99"><span class="linenos"> 99</span></a> +</span><span id="L-100"><a href="#L-100"><span class="linenos">100</span></a> <span class="k">for</span> <span class="n">identifier</span> <span class="ow">in</span> <span class="n">using</span><span class="p">:</span> +</span><span id="L-101"><a href="#L-101"><span class="linenos">101</span></a> <span class="n">identifier</span> <span class="o">=</span> <span class="n">identifier</span><span class="o">.</span><span class="n">name</span> +</span><span id="L-102"><a href="#L-102"><span class="linenos">102</span></a> <span class="n">table</span> <span class="o">=</span> <span class="n">columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">identifier</span><span class="p">)</span> +</span><span id="L-103"><a href="#L-103"><span class="linenos">103</span></a> +</span><span id="L-104"><a href="#L-104"><span class="linenos">104</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table</span> <span class="ow">or</span> <span class="n">identifier</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">join_columns</span><span class="p">:</span> +</span><span id="L-105"><a href="#L-105"><span class="linenos">105</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Cannot automatically join: </span><span class="si">{</span><span class="n">identifier</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="L-106"><a href="#L-106"><span class="linenos">106</span></a> +</span><span id="L-107"><a href="#L-107"><span class="linenos">107</span></a> <span class="n">conditions</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> +</span><span id="L-108"><a href="#L-108"><span class="linenos">108</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">condition</span><span class="p">(</span> +</span><span id="L-109"><a href="#L-109"><span class="linenos">109</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">(</span> +</span><span id="L-110"><a href="#L-110"><span class="linenos">110</span></a> <span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">identifier</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">table</span><span class="p">),</span> +</span><span id="L-111"><a href="#L-111"><span class="linenos">111</span></a> <span class="n">expression</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">identifier</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">join_table</span><span class="p">),</span> +</span><span id="L-112"><a href="#L-112"><span class="linenos">112</span></a> <span class="p">)</span> +</span><span id="L-113"><a href="#L-113"><span class="linenos">113</span></a> <span class="p">)</span> +</span><span id="L-114"><a href="#L-114"><span class="linenos">114</span></a> <span class="p">)</span> +</span><span id="L-115"><a href="#L-115"><span class="linenos">115</span></a> +</span><span id="L-116"><a href="#L-116"><span class="linenos">116</span></a> <span class="c1"># Set all values in the dict to None, because we only care about the key ordering</span> +</span><span id="L-117"><a href="#L-117"><span class="linenos">117</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="n">column_tables</span><span class="o">.</span><span class="n">setdefault</span><span class="p">(</span><span class="n">identifier</span><span class="p">,</span> <span class="p">{})</span> +</span><span id="L-118"><a href="#L-118"><span class="linenos">118</span></a> <span class="k">if</span> <span class="n">table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> +</span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a> <span class="n">tables</span><span class="p">[</span><span class="n">table</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a> <span class="k">if</span> <span class="n">join_table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> +</span><span id="L-121"><a href="#L-121"><span class="linenos">121</span></a> <span class="n">tables</span><span class="p">[</span><span class="n">join_table</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a> +</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a> <span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"using"</span><span class="p">)</span> +</span><span id="L-124"><a href="#L-124"><span class="linenos">124</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"on"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span><span class="o">*</span><span class="n">conditions</span><span class="p">))</span> +</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a> +</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a> <span class="k">if</span> <span class="n">column_tables</span><span class="p">:</span> +</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span> +</span><span id="L-128"><a href="#L-128"><span class="linenos">128</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> <span class="ow">and</span> <span class="n">column</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">column_tables</span><span class="p">:</span> +</span><span id="L-129"><a href="#L-129"><span class="linenos">129</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="n">column_tables</span><span class="p">[</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">]</span> +</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a> <span class="n">coalesce</span> <span class="o">=</span> <span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">table</span><span class="p">)</span> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">]</span> +</span><span id="L-131"><a href="#L-131"><span class="linenos">131</span></a> <span class="n">replacement</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">Coalesce</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">coalesce</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">expressions</span><span class="o">=</span><span class="n">coalesce</span><span class="p">[</span><span class="mi">1</span><span class="p">:])</span> +</span><span id="L-132"><a href="#L-132"><span class="linenos">132</span></a> +</span><span id="L-133"><a href="#L-133"><span class="linenos">133</span></a> <span class="c1"># Ensure selects keep their output name</span> +</span><span id="L-134"><a href="#L-134"><span class="linenos">134</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">parent</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> +</span><span id="L-135"><a href="#L-135"><span class="linenos">135</span></a> <span class="n">replacement</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">alias_</span><span class="p">(</span><span class="n">replacement</span><span class="p">,</span> <span class="n">alias</span><span class="o">=</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> </span><span id="L-136"><a href="#L-136"><span class="linenos">136</span></a> -</span><span id="L-137"><a href="#L-137"><span class="linenos">137</span></a> -</span><span id="L-138"><a href="#L-138"><span class="linenos">138</span></a><span class="k">def</span> <span class="nf">_expand_group_by</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">):</span> -</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a> <span class="n">group</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"group"</span><span class="p">)</span> -</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">group</span><span class="p">:</span> -</span><span id="L-141"><a href="#L-141"><span class="linenos">141</span></a> <span class="k">return</span> -</span><span id="L-142"><a href="#L-142"><span class="linenos">142</span></a> -</span><span id="L-143"><a href="#L-143"><span class="linenos">143</span></a> <span class="c1"># Replace references to select aliases</span> -</span><span id="L-144"><a href="#L-144"><span class="linenos">144</span></a> <span class="k">def</span> <span class="nf">transform</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="o">*</span><span class="n">_</span><span class="p">):</span> -</span><span id="L-145"><a href="#L-145"><span class="linenos">145</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">node</span><span class="o">.</span><span class="n">table</span><span class="p">:</span> -</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a> <span class="n">table</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> -</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a> -</span><span id="L-148"><a href="#L-148"><span class="linenos">148</span></a> <span class="c1"># Source columns get priority over select aliases</span> -</span><span id="L-149"><a href="#L-149"><span class="linenos">149</span></a> <span class="k">if</span> <span class="n">table</span><span class="p">:</span> -</span><span id="L-150"><a href="#L-150"><span class="linenos">150</span></a> <span class="n">node</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">table</span><span class="p">)</span> -</span><span id="L-151"><a href="#L-151"><span class="linenos">151</span></a> <span class="k">return</span> <span class="n">node</span> -</span><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a> -</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a> <span class="n">selects</span> <span class="o">=</span> <span class="p">{</span><span class="n">s</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">:</span> <span class="n">s</span> <span class="k">for</span> <span class="n">s</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selects</span><span class="p">}</span> +</span><span id="L-137"><a href="#L-137"><span class="linenos">137</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="n">replacement</span><span class="p">)</span> +</span><span id="L-138"><a href="#L-138"><span class="linenos">138</span></a> +</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a> <span class="k">return</span> <span class="n">column_tables</span> +</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a> +</span><span id="L-141"><a href="#L-141"><span class="linenos">141</span></a> +</span><span id="L-142"><a href="#L-142"><span class="linenos">142</span></a><span class="k">def</span> <span class="nf">_expand_alias_refs</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">):</span> +</span><span id="L-143"><a href="#L-143"><span class="linenos">143</span></a> <span class="n">selects</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="L-144"><a href="#L-144"><span class="linenos">144</span></a> +</span><span id="L-145"><a href="#L-145"><span class="linenos">145</span></a> <span class="c1"># Replace references to select aliases</span> +</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a> <span class="k">def</span> <span class="nf">transform</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="o">*</span><span class="n">_</span><span class="p">):</span> +</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">node</span><span class="o">.</span><span class="n">table</span><span class="p">:</span> +</span><span id="L-148"><a href="#L-148"><span class="linenos">148</span></a> <span class="n">table</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-149"><a href="#L-149"><span class="linenos">149</span></a> +</span><span id="L-150"><a href="#L-150"><span class="linenos">150</span></a> <span class="c1"># Source columns get priority over select aliases</span> +</span><span id="L-151"><a href="#L-151"><span class="linenos">151</span></a> <span class="k">if</span> <span class="n">table</span><span class="p">:</span> +</span><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a> <span class="n">node</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">table</span><span class="p">)</span> +</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a> <span class="k">return</span> <span class="n">node</span> </span><span id="L-154"><a href="#L-154"><span class="linenos">154</span></a> -</span><span id="L-155"><a href="#L-155"><span class="linenos">155</span></a> <span class="n">select</span> <span class="o">=</span> <span class="n">selects</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> -</span><span id="L-156"><a href="#L-156"><span class="linenos">156</span></a> <span class="k">if</span> <span class="n">select</span><span class="p">:</span> -</span><span id="L-157"><a href="#L-157"><span class="linenos">157</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> -</span><span id="L-158"><a href="#L-158"><span class="linenos">158</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">select</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Alias</span><span class="p">):</span> -</span><span id="L-159"><a href="#L-159"><span class="linenos">159</span></a> <span class="n">select</span> <span class="o">=</span> <span class="n">select</span><span class="o">.</span><span class="n">this</span> -</span><span id="L-160"><a href="#L-160"><span class="linenos">160</span></a> <span class="k">return</span> <span class="n">select</span><span class="o">.</span><span class="n">copy</span><span class="p">()</span> -</span><span id="L-161"><a href="#L-161"><span class="linenos">161</span></a> -</span><span id="L-162"><a href="#L-162"><span class="linenos">162</span></a> <span class="k">return</span> <span class="n">node</span> -</span><span id="L-163"><a href="#L-163"><span class="linenos">163</span></a> -</span><span id="L-164"><a href="#L-164"><span class="linenos">164</span></a> <span class="n">group</span><span class="o">.</span><span class="n">transform</span><span class="p">(</span><span class="n">transform</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> -</span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a> <span class="n">group</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="n">_expand_positional_references</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">group</span><span class="o">.</span><span class="n">expressions</span><span class="p">))</span> -</span><span id="L-166"><a href="#L-166"><span class="linenos">166</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"group"</span><span class="p">,</span> <span class="n">group</span><span class="p">)</span> +</span><span id="L-155"><a href="#L-155"><span class="linenos">155</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">selects</span><span class="p">:</span> +</span><span id="L-156"><a href="#L-156"><span class="linenos">156</span></a> <span class="k">for</span> <span class="n">s</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selects</span><span class="p">:</span> +</span><span id="L-157"><a href="#L-157"><span class="linenos">157</span></a> <span class="n">selects</span><span class="p">[</span><span class="n">s</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">]</span> <span class="o">=</span> <span class="n">s</span> +</span><span id="L-158"><a href="#L-158"><span class="linenos">158</span></a> <span class="n">select</span> <span class="o">=</span> <span class="n">selects</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-159"><a href="#L-159"><span class="linenos">159</span></a> +</span><span id="L-160"><a href="#L-160"><span class="linenos">160</span></a> <span class="k">if</span> <span class="n">select</span><span class="p">:</span> +</span><span id="L-161"><a href="#L-161"><span class="linenos">161</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> +</span><span id="L-162"><a href="#L-162"><span class="linenos">162</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">select</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Alias</span><span class="p">):</span> +</span><span id="L-163"><a href="#L-163"><span class="linenos">163</span></a> <span class="n">select</span> <span class="o">=</span> <span class="n">select</span><span class="o">.</span><span class="n">this</span> +</span><span id="L-164"><a href="#L-164"><span class="linenos">164</span></a> <span class="k">return</span> <span class="n">select</span><span class="o">.</span><span class="n">copy</span><span class="p">()</span> +</span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a> +</span><span id="L-166"><a href="#L-166"><span class="linenos">166</span></a> <span class="k">return</span> <span class="n">node</span> </span><span id="L-167"><a href="#L-167"><span class="linenos">167</span></a> -</span><span id="L-168"><a href="#L-168"><span class="linenos">168</span></a> -</span><span id="L-169"><a href="#L-169"><span class="linenos">169</span></a><span class="k">def</span> <span class="nf">_expand_order_by</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> -</span><span id="L-170"><a href="#L-170"><span class="linenos">170</span></a> <span class="n">order</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"order"</span><span class="p">)</span> -</span><span id="L-171"><a href="#L-171"><span class="linenos">171</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">order</span><span class="p">:</span> -</span><span id="L-172"><a href="#L-172"><span class="linenos">172</span></a> <span class="k">return</span> -</span><span id="L-173"><a href="#L-173"><span class="linenos">173</span></a> -</span><span id="L-174"><a href="#L-174"><span class="linenos">174</span></a> <span class="n">ordereds</span> <span class="o">=</span> <span class="n">order</span><span class="o">.</span><span class="n">expressions</span> -</span><span id="L-175"><a href="#L-175"><span class="linenos">175</span></a> <span class="k">for</span> <span class="n">ordered</span><span class="p">,</span> <span class="n">new_expression</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span> -</span><span id="L-176"><a href="#L-176"><span class="linenos">176</span></a> <span class="n">ordereds</span><span class="p">,</span> -</span><span id="L-177"><a href="#L-177"><span class="linenos">177</span></a> <span class="n">_expand_positional_references</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="p">(</span><span class="n">o</span><span class="o">.</span><span class="n">this</span> <span class="k">for</span> <span class="n">o</span> <span class="ow">in</span> <span class="n">ordereds</span><span class="p">)),</span> -</span><span id="L-178"><a href="#L-178"><span class="linenos">178</span></a> <span class="p">):</span> -</span><span id="L-179"><a href="#L-179"><span class="linenos">179</span></a> <span class="n">ordered</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"this"</span><span class="p">,</span> <span class="n">new_expression</span><span class="p">)</span> -</span><span id="L-180"><a href="#L-180"><span class="linenos">180</span></a> +</span><span id="L-168"><a href="#L-168"><span class="linenos">168</span></a> <span class="n">where</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"where"</span><span class="p">)</span> +</span><span id="L-169"><a href="#L-169"><span class="linenos">169</span></a> <span class="k">if</span> <span class="n">where</span><span class="p">:</span> +</span><span id="L-170"><a href="#L-170"><span class="linenos">170</span></a> <span class="n">where</span><span class="o">.</span><span class="n">transform</span><span class="p">(</span><span class="n">transform</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> +</span><span id="L-171"><a href="#L-171"><span class="linenos">171</span></a> +</span><span id="L-172"><a href="#L-172"><span class="linenos">172</span></a> <span class="n">group</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"group"</span><span class="p">)</span> +</span><span id="L-173"><a href="#L-173"><span class="linenos">173</span></a> <span class="k">if</span> <span class="n">group</span><span class="p">:</span> +</span><span id="L-174"><a href="#L-174"><span class="linenos">174</span></a> <span class="n">group</span><span class="o">.</span><span class="n">transform</span><span class="p">(</span><span class="n">transform</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> +</span><span id="L-175"><a href="#L-175"><span class="linenos">175</span></a> +</span><span id="L-176"><a href="#L-176"><span class="linenos">176</span></a> +</span><span id="L-177"><a href="#L-177"><span class="linenos">177</span></a><span class="k">def</span> <span class="nf">_expand_group_by</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">):</span> +</span><span id="L-178"><a href="#L-178"><span class="linenos">178</span></a> <span class="n">group</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"group"</span><span class="p">)</span> +</span><span id="L-179"><a href="#L-179"><span class="linenos">179</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">group</span><span class="p">:</span> +</span><span id="L-180"><a href="#L-180"><span class="linenos">180</span></a> <span class="k">return</span> </span><span id="L-181"><a href="#L-181"><span class="linenos">181</span></a> -</span><span id="L-182"><a href="#L-182"><span class="linenos">182</span></a><span class="k">def</span> <span class="nf">_expand_positional_references</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">expressions</span><span class="p">):</span> -</span><span id="L-183"><a href="#L-183"><span class="linenos">183</span></a> <span class="n">new_nodes</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-184"><a href="#L-184"><span class="linenos">184</span></a> <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">expressions</span><span class="p">:</span> -</span><span id="L-185"><a href="#L-185"><span class="linenos">185</span></a> <span class="k">if</span> <span class="n">node</span><span class="o">.</span><span class="n">is_int</span><span class="p">:</span> -</span><span id="L-186"><a href="#L-186"><span class="linenos">186</span></a> <span class="k">try</span><span class="p">:</span> -</span><span id="L-187"><a href="#L-187"><span class="linenos">187</span></a> <span class="n">select</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">selects</span><span class="p">[</span><span class="nb">int</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> -</span><span id="L-188"><a href="#L-188"><span class="linenos">188</span></a> <span class="k">except</span> <span class="ne">IndexError</span><span class="p">:</span> -</span><span id="L-189"><a href="#L-189"><span class="linenos">189</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown output column: </span><span class="si">{</span><span class="n">node</span><span class="o">.</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="L-190"><a href="#L-190"><span class="linenos">190</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">select</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Alias</span><span class="p">):</span> -</span><span id="L-191"><a href="#L-191"><span class="linenos">191</span></a> <span class="n">select</span> <span class="o">=</span> <span class="n">select</span><span class="o">.</span><span class="n">this</span> -</span><span id="L-192"><a href="#L-192"><span class="linenos">192</span></a> <span class="n">new_nodes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">select</span><span class="o">.</span><span class="n">copy</span><span class="p">())</span> -</span><span id="L-193"><a href="#L-193"><span class="linenos">193</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> -</span><span id="L-194"><a href="#L-194"><span class="linenos">194</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-195"><a href="#L-195"><span class="linenos">195</span></a> <span class="n">new_nodes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="L-196"><a href="#L-196"><span class="linenos">196</span></a> -</span><span id="L-197"><a href="#L-197"><span class="linenos">197</span></a> <span class="k">return</span> <span class="n">new_nodes</span> +</span><span id="L-182"><a href="#L-182"><span class="linenos">182</span></a> <span class="n">group</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="n">_expand_positional_references</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">group</span><span class="o">.</span><span class="n">expressions</span><span class="p">))</span> +</span><span id="L-183"><a href="#L-183"><span class="linenos">183</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"group"</span><span class="p">,</span> <span class="n">group</span><span class="p">)</span> +</span><span id="L-184"><a href="#L-184"><span class="linenos">184</span></a> +</span><span id="L-185"><a href="#L-185"><span class="linenos">185</span></a> +</span><span id="L-186"><a href="#L-186"><span class="linenos">186</span></a><span class="k">def</span> <span class="nf">_expand_order_by</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> +</span><span id="L-187"><a href="#L-187"><span class="linenos">187</span></a> <span class="n">order</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"order"</span><span class="p">)</span> +</span><span id="L-188"><a href="#L-188"><span class="linenos">188</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">order</span><span class="p">:</span> +</span><span id="L-189"><a href="#L-189"><span class="linenos">189</span></a> <span class="k">return</span> +</span><span id="L-190"><a href="#L-190"><span class="linenos">190</span></a> +</span><span id="L-191"><a href="#L-191"><span class="linenos">191</span></a> <span class="n">ordereds</span> <span class="o">=</span> <span class="n">order</span><span class="o">.</span><span class="n">expressions</span> +</span><span id="L-192"><a href="#L-192"><span class="linenos">192</span></a> <span class="k">for</span> <span class="n">ordered</span><span class="p">,</span> <span class="n">new_expression</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span> +</span><span id="L-193"><a href="#L-193"><span class="linenos">193</span></a> <span class="n">ordereds</span><span class="p">,</span> +</span><span id="L-194"><a href="#L-194"><span class="linenos">194</span></a> <span class="n">_expand_positional_references</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="p">(</span><span class="n">o</span><span class="o">.</span><span class="n">this</span> <span class="k">for</span> <span class="n">o</span> <span class="ow">in</span> <span class="n">ordereds</span><span class="p">)),</span> +</span><span id="L-195"><a href="#L-195"><span class="linenos">195</span></a> <span class="p">):</span> +</span><span id="L-196"><a href="#L-196"><span class="linenos">196</span></a> <span class="n">ordered</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"this"</span><span class="p">,</span> <span class="n">new_expression</span><span class="p">)</span> +</span><span id="L-197"><a href="#L-197"><span class="linenos">197</span></a> </span><span id="L-198"><a href="#L-198"><span class="linenos">198</span></a> -</span><span id="L-199"><a href="#L-199"><span class="linenos">199</span></a> -</span><span id="L-200"><a href="#L-200"><span class="linenos">200</span></a><span class="k">def</span> <span class="nf">_qualify_columns</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">):</span> -</span><span id="L-201"><a href="#L-201"><span class="linenos">201</span></a><span class="w"> </span><span class="sd">"""Disambiguate columns, ensuring each column specifies a source"""</span> -</span><span id="L-202"><a href="#L-202"><span class="linenos">202</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span> -</span><span id="L-203"><a href="#L-203"><span class="linenos">203</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> -</span><span id="L-204"><a href="#L-204"><span class="linenos">204</span></a> <span class="n">column_name</span> <span class="o">=</span> <span class="n">column</span><span class="o">.</span><span class="n">name</span> -</span><span id="L-205"><a href="#L-205"><span class="linenos">205</span></a> -</span><span id="L-206"><a href="#L-206"><span class="linenos">206</span></a> <span class="k">if</span> <span class="n">column_table</span> <span class="ow">and</span> <span class="n">column_table</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> -</span><span id="L-207"><a href="#L-207"><span class="linenos">207</span></a> <span class="n">source_columns</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">column_table</span><span class="p">)</span> -</span><span id="L-208"><a href="#L-208"><span class="linenos">208</span></a> <span class="k">if</span> <span class="n">source_columns</span> <span class="ow">and</span> <span class="n">column_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">source_columns</span> <span class="ow">and</span> <span class="s2">"*"</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">source_columns</span><span class="p">:</span> -</span><span id="L-209"><a href="#L-209"><span class="linenos">209</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown column: </span><span class="si">{</span><span class="n">column_name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="L-210"><a href="#L-210"><span class="linenos">210</span></a> -</span><span id="L-211"><a href="#L-211"><span class="linenos">211</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">column_table</span><span class="p">:</span> -</span><span id="L-212"><a href="#L-212"><span class="linenos">212</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">column_name</span><span class="p">)</span> +</span><span id="L-199"><a href="#L-199"><span class="linenos">199</span></a><span class="k">def</span> <span class="nf">_expand_positional_references</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">expressions</span><span class="p">):</span> +</span><span id="L-200"><a href="#L-200"><span class="linenos">200</span></a> <span class="n">new_nodes</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-201"><a href="#L-201"><span class="linenos">201</span></a> <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">expressions</span><span class="p">:</span> +</span><span id="L-202"><a href="#L-202"><span class="linenos">202</span></a> <span class="k">if</span> <span class="n">node</span><span class="o">.</span><span class="n">is_int</span><span class="p">:</span> +</span><span id="L-203"><a href="#L-203"><span class="linenos">203</span></a> <span class="k">try</span><span class="p">:</span> +</span><span id="L-204"><a href="#L-204"><span class="linenos">204</span></a> <span class="n">select</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">selects</span><span class="p">[</span><span class="nb">int</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span> +</span><span id="L-205"><a href="#L-205"><span class="linenos">205</span></a> <span class="k">except</span> <span class="ne">IndexError</span><span class="p">:</span> +</span><span id="L-206"><a href="#L-206"><span class="linenos">206</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown output column: </span><span class="si">{</span><span class="n">node</span><span class="o">.</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="L-207"><a href="#L-207"><span class="linenos">207</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">select</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Alias</span><span class="p">):</span> +</span><span id="L-208"><a href="#L-208"><span class="linenos">208</span></a> <span class="n">select</span> <span class="o">=</span> <span class="n">select</span><span class="o">.</span><span class="n">this</span> +</span><span id="L-209"><a href="#L-209"><span class="linenos">209</span></a> <span class="n">new_nodes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">select</span><span class="o">.</span><span class="n">copy</span><span class="p">())</span> +</span><span id="L-210"><a href="#L-210"><span class="linenos">210</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> +</span><span id="L-211"><a href="#L-211"><span class="linenos">211</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-212"><a href="#L-212"><span class="linenos">212</span></a> <span class="n">new_nodes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> </span><span id="L-213"><a href="#L-213"><span class="linenos">213</span></a> -</span><span id="L-214"><a href="#L-214"><span class="linenos">214</span></a> <span class="c1"># column_table can be a '' because bigquery unnest has no table alias</span> -</span><span id="L-215"><a href="#L-215"><span class="linenos">215</span></a> <span class="k">if</span> <span class="n">column_table</span><span class="p">:</span> -</span><span id="L-216"><a href="#L-216"><span class="linenos">216</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">column_table</span><span class="p">)</span> -</span><span id="L-217"><a href="#L-217"><span class="linenos">217</span></a> <span class="k">elif</span> <span class="n">column_table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> -</span><span id="L-218"><a href="#L-218"><span class="linenos">218</span></a> <span class="c1"># structs are used like tables (e.g. "struct"."field"), so they need to be qualified</span> -</span><span id="L-219"><a href="#L-219"><span class="linenos">219</span></a> <span class="c1"># separately and represented as dot(dot(...(<table>.<column>, field1), field2, ...))</span> -</span><span id="L-220"><a href="#L-220"><span class="linenos">220</span></a> -</span><span id="L-221"><a href="#L-221"><span class="linenos">221</span></a> <span class="n">struct_root</span><span class="p">,</span> <span class="o">*</span><span class="n">struct_fields</span> <span class="o">=</span> <span class="p">[</span> -</span><span id="L-222"><a href="#L-222"><span class="linenos">222</span></a> <span class="n">val</span> <span class="k">for</span> <span class="n">val</span> <span class="ow">in</span> <span class="nb">reversed</span><span class="p">(</span><span class="nb">list</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">values</span><span class="p">()))</span> <span class="k">if</span> <span class="n">val</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span> -</span><span id="L-223"><a href="#L-223"><span class="linenos">223</span></a> <span class="p">]</span> -</span><span id="L-224"><a href="#L-224"><span class="linenos">224</span></a> -</span><span id="L-225"><a href="#L-225"><span class="linenos">225</span></a> <span class="k">if</span> <span class="n">struct_root</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> -</span><span id="L-226"><a href="#L-226"><span class="linenos">226</span></a> <span class="c1"># struct is already qualified, but we still need to change the AST representation</span> -</span><span id="L-227"><a href="#L-227"><span class="linenos">227</span></a> <span class="n">struct_table</span> <span class="o">=</span> <span class="n">struct_root</span> -</span><span id="L-228"><a href="#L-228"><span class="linenos">228</span></a> <span class="n">struct_root</span><span class="p">,</span> <span class="o">*</span><span class="n">struct_fields</span> <span class="o">=</span> <span class="n">struct_fields</span> -</span><span id="L-229"><a href="#L-229"><span class="linenos">229</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-230"><a href="#L-230"><span class="linenos">230</span></a> <span class="n">struct_table</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">struct_root</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> -</span><span id="L-231"><a href="#L-231"><span class="linenos">231</span></a> -</span><span id="L-232"><a href="#L-232"><span class="linenos">232</span></a> <span class="k">if</span> <span class="n">struct_table</span><span class="p">:</span> -</span><span id="L-233"><a href="#L-233"><span class="linenos">233</span></a> <span class="k">while</span> <span class="n">column</span><span class="o">.</span><span class="n">parent</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">parent</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Dot</span><span class="p">):</span> -</span><span id="L-234"><a href="#L-234"><span class="linenos">234</span></a> <span class="n">column</span> <span class="o">=</span> <span class="n">column</span><span class="o">.</span><span class="n">parent</span> -</span><span id="L-235"><a href="#L-235"><span class="linenos">235</span></a> <span class="n">struct_fields</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-236"><a href="#L-236"><span class="linenos">236</span></a> -</span><span id="L-237"><a href="#L-237"><span class="linenos">237</span></a> <span class="n">new_column</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">struct_root</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">struct_table</span><span class="p">)</span> -</span><span id="L-238"><a href="#L-238"><span class="linenos">238</span></a> <span class="k">for</span> <span class="n">field</span> <span class="ow">in</span> <span class="n">struct_fields</span><span class="p">:</span> -</span><span id="L-239"><a href="#L-239"><span class="linenos">239</span></a> <span class="n">new_column</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">Dot</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">new_column</span><span class="p">,</span> <span class="n">expression</span><span class="o">=</span><span class="n">field</span><span class="p">)</span> -</span><span id="L-240"><a href="#L-240"><span class="linenos">240</span></a> -</span><span id="L-241"><a href="#L-241"><span class="linenos">241</span></a> <span class="n">column</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">new_column</span><span class="p">)</span> -</span><span id="L-242"><a href="#L-242"><span class="linenos">242</span></a> -</span><span id="L-243"><a href="#L-243"><span class="linenos">243</span></a> <span class="n">columns_missing_from_scope</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-244"><a href="#L-244"><span class="linenos">244</span></a> <span class="c1"># Determine whether each reference in the order by clause is to a column or an alias.</span> -</span><span id="L-245"><a href="#L-245"><span class="linenos">245</span></a> <span class="k">for</span> <span class="n">ordered</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Ordered</span><span class="p">):</span> -</span><span id="L-246"><a href="#L-246"><span class="linenos">246</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">ordered</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">):</span> -</span><span id="L-247"><a href="#L-247"><span class="linenos">247</span></a> <span class="k">if</span> <span class="p">(</span> -</span><span id="L-248"><a href="#L-248"><span class="linenos">248</span></a> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> -</span><span id="L-249"><a href="#L-249"><span class="linenos">249</span></a> <span class="ow">and</span> <span class="n">column</span><span class="o">.</span><span class="n">parent</span> <span class="ow">is</span> <span class="ow">not</span> <span class="n">ordered</span> -</span><span id="L-250"><a href="#L-250"><span class="linenos">250</span></a> <span class="ow">and</span> <span class="n">column</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">resolver</span><span class="o">.</span><span class="n">all_columns</span> -</span><span id="L-251"><a href="#L-251"><span class="linenos">251</span></a> <span class="p">):</span> -</span><span id="L-252"><a href="#L-252"><span class="linenos">252</span></a> <span class="n">columns_missing_from_scope</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">column</span><span class="p">)</span> -</span><span id="L-253"><a href="#L-253"><span class="linenos">253</span></a> -</span><span id="L-254"><a href="#L-254"><span class="linenos">254</span></a> <span class="c1"># Determine whether each reference in the having clause is to a column or an alias.</span> -</span><span id="L-255"><a href="#L-255"><span class="linenos">255</span></a> <span class="k">for</span> <span class="n">having</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Having</span><span class="p">):</span> -</span><span id="L-256"><a href="#L-256"><span class="linenos">256</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">having</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">):</span> -</span><span id="L-257"><a href="#L-257"><span class="linenos">257</span></a> <span class="k">if</span> <span class="p">(</span> -</span><span id="L-258"><a href="#L-258"><span class="linenos">258</span></a> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> -</span><span id="L-259"><a href="#L-259"><span class="linenos">259</span></a> <span class="ow">and</span> <span class="n">column</span><span class="o">.</span><span class="n">find_ancestor</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">AggFunc</span><span class="p">)</span> -</span><span id="L-260"><a href="#L-260"><span class="linenos">260</span></a> <span class="ow">and</span> <span class="n">column</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">resolver</span><span class="o">.</span><span class="n">all_columns</span> -</span><span id="L-261"><a href="#L-261"><span class="linenos">261</span></a> <span class="p">):</span> -</span><span id="L-262"><a href="#L-262"><span class="linenos">262</span></a> <span class="n">columns_missing_from_scope</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">column</span><span class="p">)</span> -</span><span id="L-263"><a href="#L-263"><span class="linenos">263</span></a> -</span><span id="L-264"><a href="#L-264"><span class="linenos">264</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns_missing_from_scope</span><span class="p">:</span> -</span><span id="L-265"><a href="#L-265"><span class="linenos">265</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> -</span><span id="L-266"><a href="#L-266"><span class="linenos">266</span></a> -</span><span id="L-267"><a href="#L-267"><span class="linenos">267</span></a> <span class="k">if</span> <span class="n">column_table</span><span class="p">:</span> -</span><span id="L-268"><a href="#L-268"><span class="linenos">268</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">column_table</span><span class="p">)</span> -</span><span id="L-269"><a href="#L-269"><span class="linenos">269</span></a> -</span><span id="L-270"><a href="#L-270"><span class="linenos">270</span></a> -</span><span id="L-271"><a href="#L-271"><span class="linenos">271</span></a><span class="k">def</span> <span class="nf">_expand_stars</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">):</span> -</span><span id="L-272"><a href="#L-272"><span class="linenos">272</span></a><span class="w"> </span><span class="sd">"""Expand stars to lists of column selections"""</span> -</span><span id="L-273"><a href="#L-273"><span class="linenos">273</span></a> -</span><span id="L-274"><a href="#L-274"><span class="linenos">274</span></a> <span class="n">new_selections</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-275"><a href="#L-275"><span class="linenos">275</span></a> <span class="n">except_columns</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="L-276"><a href="#L-276"><span class="linenos">276</span></a> <span class="n">replace_columns</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="L-277"><a href="#L-277"><span class="linenos">277</span></a> -</span><span id="L-278"><a href="#L-278"><span class="linenos">278</span></a> <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selects</span><span class="p">:</span> -</span><span id="L-279"><a href="#L-279"><span class="linenos">279</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Star</span><span class="p">):</span> -</span><span id="L-280"><a href="#L-280"><span class="linenos">280</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">)</span> -</span><span id="L-281"><a href="#L-281"><span class="linenos">281</span></a> <span class="n">_add_except_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">except_columns</span><span class="p">)</span> -</span><span id="L-282"><a href="#L-282"><span class="linenos">282</span></a> <span class="n">_add_replace_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">replace_columns</span><span class="p">)</span> -</span><span id="L-283"><a href="#L-283"><span class="linenos">283</span></a> <span class="k">elif</span> <span class="n">expression</span><span class="o">.</span><span class="n">is_star</span><span class="p">:</span> -</span><span id="L-284"><a href="#L-284"><span class="linenos">284</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="p">[</span><span class="n">expression</span><span class="o">.</span><span class="n">table</span><span class="p">]</span> -</span><span id="L-285"><a href="#L-285"><span class="linenos">285</span></a> <span class="n">_add_except_columns</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">except_columns</span><span class="p">)</span> -</span><span id="L-286"><a href="#L-286"><span class="linenos">286</span></a> <span class="n">_add_replace_columns</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">replace_columns</span><span class="p">)</span> -</span><span id="L-287"><a href="#L-287"><span class="linenos">287</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-288"><a href="#L-288"><span class="linenos">288</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-289"><a href="#L-289"><span class="linenos">289</span></a> <span class="k">continue</span> -</span><span id="L-290"><a href="#L-290"><span class="linenos">290</span></a> -</span><span id="L-291"><a href="#L-291"><span class="linenos">291</span></a> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> -</span><span id="L-292"><a href="#L-292"><span class="linenos">292</span></a> <span class="k">if</span> <span class="n">table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> -</span><span id="L-293"><a href="#L-293"><span class="linenos">293</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: </span><span class="si">{</span><span class="n">table</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="L-294"><a href="#L-294"><span class="linenos">294</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">table</span><span class="p">,</span> <span class="n">only_visible</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> -</span><span id="L-295"><a href="#L-295"><span class="linenos">295</span></a> -</span><span id="L-296"><a href="#L-296"><span class="linenos">296</span></a> <span class="k">if</span> <span class="n">columns</span> <span class="ow">and</span> <span class="s2">"*"</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> -</span><span id="L-297"><a href="#L-297"><span class="linenos">297</span></a> <span class="n">table_id</span> <span class="o">=</span> <span class="nb">id</span><span class="p">(</span><span class="n">table</span><span class="p">)</span> -</span><span id="L-298"><a href="#L-298"><span class="linenos">298</span></a> <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> -</span><span id="L-299"><a href="#L-299"><span class="linenos">299</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">except_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_id</span><span class="p">,</span> <span class="nb">set</span><span class="p">()):</span> -</span><span id="L-300"><a href="#L-300"><span class="linenos">300</span></a> <span class="n">alias_</span> <span class="o">=</span> <span class="n">replace_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_id</span><span class="p">,</span> <span class="p">{})</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span> -</span><span id="L-301"><a href="#L-301"><span class="linenos">301</span></a> <span class="n">column</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">table</span><span class="p">)</span> -</span><span id="L-302"><a href="#L-302"><span class="linenos">302</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">alias</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="n">alias_</span><span class="p">)</span> <span class="k">if</span> <span class="n">alias_</span> <span class="o">!=</span> <span class="n">name</span> <span class="k">else</span> <span class="n">column</span><span class="p">)</span> -</span><span id="L-303"><a href="#L-303"><span class="linenos">303</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-304"><a href="#L-304"><span class="linenos">304</span></a> <span class="k">return</span> -</span><span id="L-305"><a href="#L-305"><span class="linenos">305</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="n">new_selections</span><span class="p">)</span> -</span><span id="L-306"><a href="#L-306"><span class="linenos">306</span></a> -</span><span id="L-307"><a href="#L-307"><span class="linenos">307</span></a> -</span><span id="L-308"><a href="#L-308"><span class="linenos">308</span></a><span class="k">def</span> <span class="nf">_add_except_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">except_columns</span><span class="p">):</span> -</span><span id="L-309"><a href="#L-309"><span class="linenos">309</span></a> <span class="n">except_</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"except"</span><span class="p">)</span> -</span><span id="L-310"><a href="#L-310"><span class="linenos">310</span></a> -</span><span id="L-311"><a href="#L-311"><span class="linenos">311</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">except_</span><span class="p">:</span> -</span><span id="L-312"><a href="#L-312"><span class="linenos">312</span></a> <span class="k">return</span> -</span><span id="L-313"><a href="#L-313"><span class="linenos">313</span></a> -</span><span id="L-314"><a href="#L-314"><span class="linenos">314</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">e</span><span class="o">.</span><span class="n">name</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">except_</span><span class="p">}</span> -</span><span id="L-315"><a href="#L-315"><span class="linenos">315</span></a> -</span><span id="L-316"><a href="#L-316"><span class="linenos">316</span></a> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> -</span><span id="L-317"><a href="#L-317"><span class="linenos">317</span></a> <span class="n">except_columns</span><span class="p">[</span><span class="nb">id</span><span class="p">(</span><span class="n">table</span><span class="p">)]</span> <span class="o">=</span> <span class="n">columns</span> -</span><span id="L-318"><a href="#L-318"><span class="linenos">318</span></a> -</span><span id="L-319"><a href="#L-319"><span class="linenos">319</span></a> -</span><span id="L-320"><a href="#L-320"><span class="linenos">320</span></a><span class="k">def</span> <span class="nf">_add_replace_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">replace_columns</span><span class="p">):</span> -</span><span id="L-321"><a href="#L-321"><span class="linenos">321</span></a> <span class="n">replace</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"replace"</span><span class="p">)</span> -</span><span id="L-322"><a href="#L-322"><span class="linenos">322</span></a> -</span><span id="L-323"><a href="#L-323"><span class="linenos">323</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">replace</span><span class="p">:</span> -</span><span id="L-324"><a href="#L-324"><span class="linenos">324</span></a> <span class="k">return</span> -</span><span id="L-325"><a href="#L-325"><span class="linenos">325</span></a> -</span><span id="L-326"><a href="#L-326"><span class="linenos">326</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">e</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">name</span><span class="p">:</span> <span class="n">e</span><span class="o">.</span><span class="n">alias</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">replace</span><span class="p">}</span> -</span><span id="L-327"><a href="#L-327"><span class="linenos">327</span></a> -</span><span id="L-328"><a href="#L-328"><span class="linenos">328</span></a> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> -</span><span id="L-329"><a href="#L-329"><span class="linenos">329</span></a> <span class="n">replace_columns</span><span class="p">[</span><span class="nb">id</span><span class="p">(</span><span class="n">table</span><span class="p">)]</span> <span class="o">=</span> <span class="n">columns</span> -</span><span id="L-330"><a href="#L-330"><span class="linenos">330</span></a> -</span><span id="L-331"><a href="#L-331"><span class="linenos">331</span></a> -</span><span id="L-332"><a href="#L-332"><span class="linenos">332</span></a><span class="k">def</span> <span class="nf">_qualify_outputs</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> -</span><span id="L-333"><a href="#L-333"><span class="linenos">333</span></a><span class="w"> </span><span class="sd">"""Ensure all output columns are aliased"""</span> -</span><span id="L-334"><a href="#L-334"><span class="linenos">334</span></a> <span class="n">new_selections</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-335"><a href="#L-335"><span class="linenos">335</span></a> -</span><span id="L-336"><a href="#L-336"><span class="linenos">336</span></a> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="p">(</span><span class="n">selection</span><span class="p">,</span> <span class="n">aliased_column</span><span class="p">)</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span> -</span><span id="L-337"><a href="#L-337"><span class="linenos">337</span></a> <span class="n">itertools</span><span class="o">.</span><span class="n">zip_longest</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">selects</span><span class="p">,</span> <span class="n">scope</span><span class="o">.</span><span class="n">outer_column_list</span><span class="p">)</span> -</span><span id="L-338"><a href="#L-338"><span class="linenos">338</span></a> <span class="p">):</span> -</span><span id="L-339"><a href="#L-339"><span class="linenos">339</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">selection</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">):</span> -</span><span id="L-340"><a href="#L-340"><span class="linenos">340</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">selection</span><span class="o">.</span><span class="n">output_name</span><span class="p">:</span> -</span><span id="L-341"><a href="#L-341"><span class="linenos">341</span></a> <span class="n">selection</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="sa">f</span><span class="s2">"_col_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">"</span><span class="p">)))</span> -</span><span id="L-342"><a href="#L-342"><span class="linenos">342</span></a> <span class="k">elif</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">selection</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Alias</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">selection</span><span class="o">.</span><span class="n">is_star</span><span class="p">:</span> -</span><span id="L-343"><a href="#L-343"><span class="linenos">343</span></a> <span class="n">alias_</span> <span class="o">=</span> <span class="n">alias</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="s2">""</span><span class="p">),</span> <span class="n">alias</span><span class="o">=</span><span class="n">selection</span><span class="o">.</span><span class="n">output_name</span> <span class="ow">or</span> <span class="sa">f</span><span class="s2">"_col_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="L-344"><a href="#L-344"><span class="linenos">344</span></a> <span class="n">alias_</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"this"</span><span class="p">,</span> <span class="n">selection</span><span class="p">)</span> -</span><span id="L-345"><a href="#L-345"><span class="linenos">345</span></a> <span class="n">selection</span> <span class="o">=</span> <span class="n">alias_</span> +</span><span id="L-214"><a href="#L-214"><span class="linenos">214</span></a> <span class="k">return</span> <span class="n">new_nodes</span> +</span><span id="L-215"><a href="#L-215"><span class="linenos">215</span></a> +</span><span id="L-216"><a href="#L-216"><span class="linenos">216</span></a> +</span><span id="L-217"><a href="#L-217"><span class="linenos">217</span></a><span class="k">def</span> <span class="nf">_qualify_columns</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">):</span> +</span><span id="L-218"><a href="#L-218"><span class="linenos">218</span></a><span class="w"> </span><span class="sd">"""Disambiguate columns, ensuring each column specifies a source"""</span> +</span><span id="L-219"><a href="#L-219"><span class="linenos">219</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span> +</span><span id="L-220"><a href="#L-220"><span class="linenos">220</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> +</span><span id="L-221"><a href="#L-221"><span class="linenos">221</span></a> <span class="n">column_name</span> <span class="o">=</span> <span class="n">column</span><span class="o">.</span><span class="n">name</span> +</span><span id="L-222"><a href="#L-222"><span class="linenos">222</span></a> +</span><span id="L-223"><a href="#L-223"><span class="linenos">223</span></a> <span class="k">if</span> <span class="n">column_table</span> <span class="ow">and</span> <span class="n">column_table</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> +</span><span id="L-224"><a href="#L-224"><span class="linenos">224</span></a> <span class="n">source_columns</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">column_table</span><span class="p">)</span> +</span><span id="L-225"><a href="#L-225"><span class="linenos">225</span></a> <span class="k">if</span> <span class="n">source_columns</span> <span class="ow">and</span> <span class="n">column_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">source_columns</span> <span class="ow">and</span> <span class="s2">"*"</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">source_columns</span><span class="p">:</span> +</span><span id="L-226"><a href="#L-226"><span class="linenos">226</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown column: </span><span class="si">{</span><span class="n">column_name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="L-227"><a href="#L-227"><span class="linenos">227</span></a> +</span><span id="L-228"><a href="#L-228"><span class="linenos">228</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">column_table</span><span class="p">:</span> +</span><span id="L-229"><a href="#L-229"><span class="linenos">229</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">column_name</span><span class="p">)</span> +</span><span id="L-230"><a href="#L-230"><span class="linenos">230</span></a> +</span><span id="L-231"><a href="#L-231"><span class="linenos">231</span></a> <span class="c1"># column_table can be a '' because bigquery unnest has no table alias</span> +</span><span id="L-232"><a href="#L-232"><span class="linenos">232</span></a> <span class="k">if</span> <span class="n">column_table</span><span class="p">:</span> +</span><span id="L-233"><a href="#L-233"><span class="linenos">233</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">column_table</span><span class="p">)</span> +</span><span id="L-234"><a href="#L-234"><span class="linenos">234</span></a> <span class="k">elif</span> <span class="n">column_table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> +</span><span id="L-235"><a href="#L-235"><span class="linenos">235</span></a> <span class="c1"># structs are used like tables (e.g. "struct"."field"), so they need to be qualified</span> +</span><span id="L-236"><a href="#L-236"><span class="linenos">236</span></a> <span class="c1"># separately and represented as dot(dot(...(<table>.<column>, field1), field2, ...))</span> +</span><span id="L-237"><a href="#L-237"><span class="linenos">237</span></a> +</span><span id="L-238"><a href="#L-238"><span class="linenos">238</span></a> <span class="n">root</span><span class="p">,</span> <span class="o">*</span><span class="n">parts</span> <span class="o">=</span> <span class="n">column</span><span class="o">.</span><span class="n">parts</span> +</span><span id="L-239"><a href="#L-239"><span class="linenos">239</span></a> +</span><span id="L-240"><a href="#L-240"><span class="linenos">240</span></a> <span class="k">if</span> <span class="n">root</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> +</span><span id="L-241"><a href="#L-241"><span class="linenos">241</span></a> <span class="c1"># struct is already qualified, but we still need to change the AST representation</span> +</span><span id="L-242"><a href="#L-242"><span class="linenos">242</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">root</span> +</span><span id="L-243"><a href="#L-243"><span class="linenos">243</span></a> <span class="n">root</span><span class="p">,</span> <span class="o">*</span><span class="n">parts</span> <span class="o">=</span> <span class="n">parts</span> +</span><span id="L-244"><a href="#L-244"><span class="linenos">244</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-245"><a href="#L-245"><span class="linenos">245</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">root</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-246"><a href="#L-246"><span class="linenos">246</span></a> +</span><span id="L-247"><a href="#L-247"><span class="linenos">247</span></a> <span class="k">if</span> <span class="n">column_table</span><span class="p">:</span> +</span><span id="L-248"><a href="#L-248"><span class="linenos">248</span></a> <span class="n">column</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Dot</span><span class="o">.</span><span class="n">build</span><span class="p">([</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">root</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">column_table</span><span class="p">),</span> <span class="o">*</span><span class="n">parts</span><span class="p">]))</span> +</span><span id="L-249"><a href="#L-249"><span class="linenos">249</span></a> +</span><span id="L-250"><a href="#L-250"><span class="linenos">250</span></a> <span class="n">columns_missing_from_scope</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-251"><a href="#L-251"><span class="linenos">251</span></a> +</span><span id="L-252"><a href="#L-252"><span class="linenos">252</span></a> <span class="c1"># Determine whether each reference in the order by clause is to a column or an alias.</span> +</span><span id="L-253"><a href="#L-253"><span class="linenos">253</span></a> <span class="n">order</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"order"</span><span class="p">)</span> +</span><span id="L-254"><a href="#L-254"><span class="linenos">254</span></a> +</span><span id="L-255"><a href="#L-255"><span class="linenos">255</span></a> <span class="k">if</span> <span class="n">order</span><span class="p">:</span> +</span><span id="L-256"><a href="#L-256"><span class="linenos">256</span></a> <span class="k">for</span> <span class="n">ordered</span> <span class="ow">in</span> <span class="n">order</span><span class="o">.</span><span class="n">expressions</span><span class="p">:</span> +</span><span id="L-257"><a href="#L-257"><span class="linenos">257</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">ordered</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">):</span> +</span><span id="L-258"><a href="#L-258"><span class="linenos">258</span></a> <span class="k">if</span> <span class="p">(</span> +</span><span id="L-259"><a href="#L-259"><span class="linenos">259</span></a> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> +</span><span id="L-260"><a href="#L-260"><span class="linenos">260</span></a> <span class="ow">and</span> <span class="n">column</span><span class="o">.</span><span class="n">parent</span> <span class="ow">is</span> <span class="ow">not</span> <span class="n">ordered</span> +</span><span id="L-261"><a href="#L-261"><span class="linenos">261</span></a> <span class="ow">and</span> <span class="n">column</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">resolver</span><span class="o">.</span><span class="n">all_columns</span> +</span><span id="L-262"><a href="#L-262"><span class="linenos">262</span></a> <span class="p">):</span> +</span><span id="L-263"><a href="#L-263"><span class="linenos">263</span></a> <span class="n">columns_missing_from_scope</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">column</span><span class="p">)</span> +</span><span id="L-264"><a href="#L-264"><span class="linenos">264</span></a> +</span><span id="L-265"><a href="#L-265"><span class="linenos">265</span></a> <span class="c1"># Determine whether each reference in the having clause is to a column or an alias.</span> +</span><span id="L-266"><a href="#L-266"><span class="linenos">266</span></a> <span class="n">having</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"having"</span><span class="p">)</span> +</span><span id="L-267"><a href="#L-267"><span class="linenos">267</span></a> +</span><span id="L-268"><a href="#L-268"><span class="linenos">268</span></a> <span class="k">if</span> <span class="n">having</span><span class="p">:</span> +</span><span id="L-269"><a href="#L-269"><span class="linenos">269</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">having</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">):</span> +</span><span id="L-270"><a href="#L-270"><span class="linenos">270</span></a> <span class="k">if</span> <span class="p">(</span> +</span><span id="L-271"><a href="#L-271"><span class="linenos">271</span></a> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> +</span><span id="L-272"><a href="#L-272"><span class="linenos">272</span></a> <span class="ow">and</span> <span class="n">column</span><span class="o">.</span><span class="n">find_ancestor</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">AggFunc</span><span class="p">)</span> +</span><span id="L-273"><a href="#L-273"><span class="linenos">273</span></a> <span class="ow">and</span> <span class="n">column</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">resolver</span><span class="o">.</span><span class="n">all_columns</span> +</span><span id="L-274"><a href="#L-274"><span class="linenos">274</span></a> <span class="p">):</span> +</span><span id="L-275"><a href="#L-275"><span class="linenos">275</span></a> <span class="n">columns_missing_from_scope</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">column</span><span class="p">)</span> +</span><span id="L-276"><a href="#L-276"><span class="linenos">276</span></a> +</span><span id="L-277"><a href="#L-277"><span class="linenos">277</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns_missing_from_scope</span><span class="p">:</span> +</span><span id="L-278"><a href="#L-278"><span class="linenos">278</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-279"><a href="#L-279"><span class="linenos">279</span></a> +</span><span id="L-280"><a href="#L-280"><span class="linenos">280</span></a> <span class="k">if</span> <span class="n">column_table</span><span class="p">:</span> +</span><span id="L-281"><a href="#L-281"><span class="linenos">281</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">column_table</span><span class="p">)</span> +</span><span id="L-282"><a href="#L-282"><span class="linenos">282</span></a> +</span><span id="L-283"><a href="#L-283"><span class="linenos">283</span></a> +</span><span id="L-284"><a href="#L-284"><span class="linenos">284</span></a><span class="k">def</span> <span class="nf">_expand_stars</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">,</span> <span class="n">using_column_tables</span><span class="p">):</span> +</span><span id="L-285"><a href="#L-285"><span class="linenos">285</span></a><span class="w"> </span><span class="sd">"""Expand stars to lists of column selections"""</span> +</span><span id="L-286"><a href="#L-286"><span class="linenos">286</span></a> +</span><span id="L-287"><a href="#L-287"><span class="linenos">287</span></a> <span class="n">new_selections</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-288"><a href="#L-288"><span class="linenos">288</span></a> <span class="n">except_columns</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="L-289"><a href="#L-289"><span class="linenos">289</span></a> <span class="n">replace_columns</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="L-290"><a href="#L-290"><span class="linenos">290</span></a> <span class="n">coalesced_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span> +</span><span id="L-291"><a href="#L-291"><span class="linenos">291</span></a> +</span><span id="L-292"><a href="#L-292"><span class="linenos">292</span></a> <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selects</span><span class="p">:</span> +</span><span id="L-293"><a href="#L-293"><span class="linenos">293</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Star</span><span class="p">):</span> +</span><span id="L-294"><a href="#L-294"><span class="linenos">294</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">)</span> +</span><span id="L-295"><a href="#L-295"><span class="linenos">295</span></a> <span class="n">_add_except_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">except_columns</span><span class="p">)</span> +</span><span id="L-296"><a href="#L-296"><span class="linenos">296</span></a> <span class="n">_add_replace_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">replace_columns</span><span class="p">)</span> +</span><span id="L-297"><a href="#L-297"><span class="linenos">297</span></a> <span class="k">elif</span> <span class="n">expression</span><span class="o">.</span><span class="n">is_star</span><span class="p">:</span> +</span><span id="L-298"><a href="#L-298"><span class="linenos">298</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="p">[</span><span class="n">expression</span><span class="o">.</span><span class="n">table</span><span class="p">]</span> +</span><span id="L-299"><a href="#L-299"><span class="linenos">299</span></a> <span class="n">_add_except_columns</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">except_columns</span><span class="p">)</span> +</span><span id="L-300"><a href="#L-300"><span class="linenos">300</span></a> <span class="n">_add_replace_columns</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">replace_columns</span><span class="p">)</span> +</span><span id="L-301"><a href="#L-301"><span class="linenos">301</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-302"><a href="#L-302"><span class="linenos">302</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="L-303"><a href="#L-303"><span class="linenos">303</span></a> <span class="k">continue</span> +</span><span id="L-304"><a href="#L-304"><span class="linenos">304</span></a> +</span><span id="L-305"><a href="#L-305"><span class="linenos">305</span></a> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> +</span><span id="L-306"><a href="#L-306"><span class="linenos">306</span></a> <span class="k">if</span> <span class="n">table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> +</span><span id="L-307"><a href="#L-307"><span class="linenos">307</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: </span><span class="si">{</span><span class="n">table</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="L-308"><a href="#L-308"><span class="linenos">308</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">table</span><span class="p">,</span> <span class="n">only_visible</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> +</span><span id="L-309"><a href="#L-309"><span class="linenos">309</span></a> +</span><span id="L-310"><a href="#L-310"><span class="linenos">310</span></a> <span class="k">if</span> <span class="n">columns</span> <span class="ow">and</span> <span class="s2">"*"</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> +</span><span id="L-311"><a href="#L-311"><span class="linenos">311</span></a> <span class="n">table_id</span> <span class="o">=</span> <span class="nb">id</span><span class="p">(</span><span class="n">table</span><span class="p">)</span> +</span><span id="L-312"><a href="#L-312"><span class="linenos">312</span></a> <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> +</span><span id="L-313"><a href="#L-313"><span class="linenos">313</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">using_column_tables</span> <span class="ow">and</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">using_column_tables</span><span class="p">[</span><span class="n">name</span><span class="p">]:</span> +</span><span id="L-314"><a href="#L-314"><span class="linenos">314</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">coalesced_columns</span><span class="p">:</span> +</span><span id="L-315"><a href="#L-315"><span class="linenos">315</span></a> <span class="k">continue</span> +</span><span id="L-316"><a href="#L-316"><span class="linenos">316</span></a> +</span><span id="L-317"><a href="#L-317"><span class="linenos">317</span></a> <span class="n">coalesced_columns</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-318"><a href="#L-318"><span class="linenos">318</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="n">using_column_tables</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> +</span><span id="L-319"><a href="#L-319"><span class="linenos">319</span></a> <span class="n">coalesce</span> <span class="o">=</span> <span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">table</span><span class="p">)</span> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">]</span> +</span><span id="L-320"><a href="#L-320"><span class="linenos">320</span></a> +</span><span id="L-321"><a href="#L-321"><span class="linenos">321</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> +</span><span id="L-322"><a href="#L-322"><span class="linenos">322</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">alias_</span><span class="p">(</span> +</span><span id="L-323"><a href="#L-323"><span class="linenos">323</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Coalesce</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">coalesce</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">expressions</span><span class="o">=</span><span class="n">coalesce</span><span class="p">[</span><span class="mi">1</span><span class="p">:]),</span> <span class="n">alias</span><span class="o">=</span><span class="n">name</span> +</span><span id="L-324"><a href="#L-324"><span class="linenos">324</span></a> <span class="p">)</span> +</span><span id="L-325"><a href="#L-325"><span class="linenos">325</span></a> <span class="p">)</span> +</span><span id="L-326"><a href="#L-326"><span class="linenos">326</span></a> <span class="k">elif</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">except_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_id</span><span class="p">,</span> <span class="nb">set</span><span class="p">()):</span> +</span><span id="L-327"><a href="#L-327"><span class="linenos">327</span></a> <span class="n">alias_</span> <span class="o">=</span> <span class="n">replace_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_id</span><span class="p">,</span> <span class="p">{})</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span> +</span><span id="L-328"><a href="#L-328"><span class="linenos">328</span></a> <span class="n">column</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">table</span><span class="p">)</span> +</span><span id="L-329"><a href="#L-329"><span class="linenos">329</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">alias</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="n">alias_</span><span class="p">)</span> <span class="k">if</span> <span class="n">alias_</span> <span class="o">!=</span> <span class="n">name</span> <span class="k">else</span> <span class="n">column</span><span class="p">)</span> +</span><span id="L-330"><a href="#L-330"><span class="linenos">330</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-331"><a href="#L-331"><span class="linenos">331</span></a> <span class="k">return</span> +</span><span id="L-332"><a href="#L-332"><span class="linenos">332</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="n">new_selections</span><span class="p">)</span> +</span><span id="L-333"><a href="#L-333"><span class="linenos">333</span></a> +</span><span id="L-334"><a href="#L-334"><span class="linenos">334</span></a> +</span><span id="L-335"><a href="#L-335"><span class="linenos">335</span></a><span class="k">def</span> <span class="nf">_add_except_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">except_columns</span><span class="p">):</span> +</span><span id="L-336"><a href="#L-336"><span class="linenos">336</span></a> <span class="n">except_</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"except"</span><span class="p">)</span> +</span><span id="L-337"><a href="#L-337"><span class="linenos">337</span></a> +</span><span id="L-338"><a href="#L-338"><span class="linenos">338</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">except_</span><span class="p">:</span> +</span><span id="L-339"><a href="#L-339"><span class="linenos">339</span></a> <span class="k">return</span> +</span><span id="L-340"><a href="#L-340"><span class="linenos">340</span></a> +</span><span id="L-341"><a href="#L-341"><span class="linenos">341</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">e</span><span class="o">.</span><span class="n">name</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">except_</span><span class="p">}</span> +</span><span id="L-342"><a href="#L-342"><span class="linenos">342</span></a> +</span><span id="L-343"><a href="#L-343"><span class="linenos">343</span></a> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> +</span><span id="L-344"><a href="#L-344"><span class="linenos">344</span></a> <span class="n">except_columns</span><span class="p">[</span><span class="nb">id</span><span class="p">(</span><span class="n">table</span><span class="p">)]</span> <span class="o">=</span> <span class="n">columns</span> +</span><span id="L-345"><a href="#L-345"><span class="linenos">345</span></a> </span><span id="L-346"><a href="#L-346"><span class="linenos">346</span></a> -</span><span id="L-347"><a href="#L-347"><span class="linenos">347</span></a> <span class="k">if</span> <span class="n">aliased_column</span><span class="p">:</span> -</span><span id="L-348"><a href="#L-348"><span class="linenos">348</span></a> <span class="n">selection</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">aliased_column</span><span class="p">))</span> +</span><span id="L-347"><a href="#L-347"><span class="linenos">347</span></a><span class="k">def</span> <span class="nf">_add_replace_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">replace_columns</span><span class="p">):</span> +</span><span id="L-348"><a href="#L-348"><span class="linenos">348</span></a> <span class="n">replace</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"replace"</span><span class="p">)</span> </span><span id="L-349"><a href="#L-349"><span class="linenos">349</span></a> -</span><span id="L-350"><a href="#L-350"><span class="linenos">350</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">selection</span><span class="p">)</span> -</span><span id="L-351"><a href="#L-351"><span class="linenos">351</span></a> -</span><span id="L-352"><a href="#L-352"><span class="linenos">352</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="n">new_selections</span><span class="p">)</span> -</span><span id="L-353"><a href="#L-353"><span class="linenos">353</span></a> +</span><span id="L-350"><a href="#L-350"><span class="linenos">350</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">replace</span><span class="p">:</span> +</span><span id="L-351"><a href="#L-351"><span class="linenos">351</span></a> <span class="k">return</span> +</span><span id="L-352"><a href="#L-352"><span class="linenos">352</span></a> +</span><span id="L-353"><a href="#L-353"><span class="linenos">353</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">e</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">name</span><span class="p">:</span> <span class="n">e</span><span class="o">.</span><span class="n">alias</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">replace</span><span class="p">}</span> </span><span id="L-354"><a href="#L-354"><span class="linenos">354</span></a> -</span><span id="L-355"><a href="#L-355"><span class="linenos">355</span></a><span class="k">class</span> <span class="nc">Resolver</span><span class="p">:</span> -</span><span id="L-356"><a href="#L-356"><span class="linenos">356</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-357"><a href="#L-357"><span class="linenos">357</span></a><span class="sd"> Helper for resolving columns.</span> +</span><span id="L-355"><a href="#L-355"><span class="linenos">355</span></a> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> +</span><span id="L-356"><a href="#L-356"><span class="linenos">356</span></a> <span class="n">replace_columns</span><span class="p">[</span><span class="nb">id</span><span class="p">(</span><span class="n">table</span><span class="p">)]</span> <span class="o">=</span> <span class="n">columns</span> +</span><span id="L-357"><a href="#L-357"><span class="linenos">357</span></a> </span><span id="L-358"><a href="#L-358"><span class="linenos">358</span></a> -</span><span id="L-359"><a href="#L-359"><span class="linenos">359</span></a><span class="sd"> This is a class so we can lazily load some things and easily share them across functions.</span> -</span><span id="L-360"><a href="#L-360"><span class="linenos">360</span></a><span class="sd"> """</span> -</span><span id="L-361"><a href="#L-361"><span class="linenos">361</span></a> -</span><span id="L-362"><a href="#L-362"><span class="linenos">362</span></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">):</span> -</span><span id="L-363"><a href="#L-363"><span class="linenos">363</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span> <span class="o">=</span> <span class="n">scope</span> -</span><span id="L-364"><a href="#L-364"><span class="linenos">364</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span> -</span><span id="L-365"><a href="#L-365"><span class="linenos">365</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-366"><a href="#L-366"><span class="linenos">366</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-367"><a href="#L-367"><span class="linenos">367</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-368"><a href="#L-368"><span class="linenos">368</span></a> -</span><span id="L-369"><a href="#L-369"><span class="linenos">369</span></a> <span class="k">def</span> <span class="nf">get_table</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">column_name</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">]:</span> -</span><span id="L-370"><a href="#L-370"><span class="linenos">370</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-371"><a href="#L-371"><span class="linenos">371</span></a><span class="sd"> Get the table for a column name.</span> -</span><span id="L-372"><a href="#L-372"><span class="linenos">372</span></a> -</span><span id="L-373"><a href="#L-373"><span class="linenos">373</span></a><span class="sd"> Args:</span> -</span><span id="L-374"><a href="#L-374"><span class="linenos">374</span></a><span class="sd"> column_name: The column name to find the table for.</span> -</span><span id="L-375"><a href="#L-375"><span class="linenos">375</span></a><span class="sd"> Returns:</span> -</span><span id="L-376"><a href="#L-376"><span class="linenos">376</span></a><span class="sd"> The table name if it can be found/inferred.</span> -</span><span id="L-377"><a href="#L-377"><span class="linenos">377</span></a><span class="sd"> """</span> -</span><span id="L-378"><a href="#L-378"><span class="linenos">378</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> -</span><span id="L-379"><a href="#L-379"><span class="linenos">379</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_unambiguous_columns</span><span class="p">(</span> -</span><span id="L-380"><a href="#L-380"><span class="linenos">380</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span> -</span><span id="L-381"><a href="#L-381"><span class="linenos">381</span></a> <span class="p">)</span> -</span><span id="L-382"><a href="#L-382"><span class="linenos">382</span></a> -</span><span id="L-383"><a href="#L-383"><span class="linenos">383</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column_name</span><span class="p">)</span> -</span><span id="L-384"><a href="#L-384"><span class="linenos">384</span></a> -</span><span id="L-385"><a href="#L-385"><span class="linenos">385</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_name</span><span class="p">:</span> -</span><span id="L-386"><a href="#L-386"><span class="linenos">386</span></a> <span class="n">sources_without_schema</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span> -</span><span id="L-387"><a href="#L-387"><span class="linenos">387</span></a> <span class="n">source</span> -</span><span id="L-388"><a href="#L-388"><span class="linenos">388</span></a> <span class="k">for</span> <span class="n">source</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> -</span><span id="L-389"><a href="#L-389"><span class="linenos">389</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">columns</span> <span class="ow">or</span> <span class="s2">"*"</span> <span class="ow">in</span> <span class="n">columns</span> -</span><span id="L-390"><a href="#L-390"><span class="linenos">390</span></a> <span class="p">)</span> -</span><span id="L-391"><a href="#L-391"><span class="linenos">391</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">sources_without_schema</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> -</span><span id="L-392"><a href="#L-392"><span class="linenos">392</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="n">sources_without_schema</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> -</span><span id="L-393"><a href="#L-393"><span class="linenos">393</span></a> -</span><span id="L-394"><a href="#L-394"><span class="linenos">394</span></a> <span class="k">if</span> <span class="n">table_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">:</span> -</span><span id="L-395"><a href="#L-395"><span class="linenos">395</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> -</span><span id="L-396"><a href="#L-396"><span class="linenos">396</span></a> -</span><span id="L-397"><a href="#L-397"><span class="linenos">397</span></a> <span class="n">node</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> -</span><span id="L-398"><a href="#L-398"><span class="linenos">398</span></a> -</span><span id="L-399"><a href="#L-399"><span class="linenos">399</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">):</span> -</span><span id="L-400"><a href="#L-400"><span class="linenos">400</span></a> <span class="k">while</span> <span class="n">node</span> <span class="ow">and</span> <span class="n">node</span><span class="o">.</span><span class="n">alias</span> <span class="o">!=</span> <span class="n">table_name</span><span class="p">:</span> -</span><span id="L-401"><a href="#L-401"><span class="linenos">401</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> -</span><span id="L-402"><a href="#L-402"><span class="linenos">402</span></a> -</span><span id="L-403"><a href="#L-403"><span class="linenos">403</span></a> <span class="n">node_alias</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> -</span><span id="L-404"><a href="#L-404"><span class="linenos">404</span></a> <span class="k">if</span> <span class="n">node_alias</span><span class="p">:</span> -</span><span id="L-405"><a href="#L-405"><span class="linenos">405</span></a> <span class="k">return</span> <span class="n">node_alias</span><span class="o">.</span><span class="n">this</span> -</span><span id="L-406"><a href="#L-406"><span class="linenos">406</span></a> -</span><span id="L-407"><a href="#L-407"><span class="linenos">407</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span> -</span><span id="L-408"><a href="#L-408"><span class="linenos">408</span></a> <span class="n">table_name</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">quoted</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">)</span> <span class="k">else</span> <span class="kc">None</span> -</span><span id="L-409"><a href="#L-409"><span class="linenos">409</span></a> <span class="p">)</span> -</span><span id="L-410"><a href="#L-410"><span class="linenos">410</span></a> -</span><span id="L-411"><a href="#L-411"><span class="linenos">411</span></a> <span class="nd">@property</span> -</span><span id="L-412"><a href="#L-412"><span class="linenos">412</span></a> <span class="k">def</span> <span class="nf">all_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> -</span><span id="L-413"><a href="#L-413"><span class="linenos">413</span></a><span class="w"> </span><span class="sd">"""All available columns of all sources in this scope"""</span> -</span><span id="L-414"><a href="#L-414"><span class="linenos">414</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> -</span><span id="L-415"><a href="#L-415"><span class="linenos">415</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="p">{</span> -</span><span id="L-416"><a href="#L-416"><span class="linenos">416</span></a> <span class="n">column</span> <span class="k">for</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">values</span><span class="p">()</span> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span> -</span><span id="L-417"><a href="#L-417"><span class="linenos">417</span></a> <span class="p">}</span> -</span><span id="L-418"><a href="#L-418"><span class="linenos">418</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> -</span><span id="L-419"><a href="#L-419"><span class="linenos">419</span></a> -</span><span id="L-420"><a href="#L-420"><span class="linenos">420</span></a> <span class="k">def</span> <span class="nf">get_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">only_visible</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> -</span><span id="L-421"><a href="#L-421"><span class="linenos">421</span></a><span class="w"> </span><span class="sd">"""Resolve the source columns for a given source `name`"""</span> -</span><span id="L-422"><a href="#L-422"><span class="linenos">422</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> -</span><span id="L-423"><a href="#L-423"><span class="linenos">423</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="L-424"><a href="#L-424"><span class="linenos">424</span></a> -</span><span id="L-425"><a href="#L-425"><span class="linenos">425</span></a> <span class="n">source</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> -</span><span id="L-426"><a href="#L-426"><span class="linenos">426</span></a> -</span><span id="L-427"><a href="#L-427"><span class="linenos">427</span></a> <span class="c1"># If referencing a table, return the columns from the schema</span> -</span><span id="L-428"><a href="#L-428"><span class="linenos">428</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> -</span><span id="L-429"><a href="#L-429"><span class="linenos">429</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">column_names</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">only_visible</span><span class="p">)</span> -</span><span id="L-430"><a href="#L-430"><span class="linenos">430</span></a> -</span><span id="L-431"><a href="#L-431"><span class="linenos">431</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">):</span> -</span><span id="L-432"><a href="#L-432"><span class="linenos">432</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span> +</span><span id="L-359"><a href="#L-359"><span class="linenos">359</span></a><span class="k">def</span> <span class="nf">_qualify_outputs</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> +</span><span id="L-360"><a href="#L-360"><span class="linenos">360</span></a><span class="w"> </span><span class="sd">"""Ensure all output columns are aliased"""</span> +</span><span id="L-361"><a href="#L-361"><span class="linenos">361</span></a> <span class="n">new_selections</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-362"><a href="#L-362"><span class="linenos">362</span></a> +</span><span id="L-363"><a href="#L-363"><span class="linenos">363</span></a> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="p">(</span><span class="n">selection</span><span class="p">,</span> <span class="n">aliased_column</span><span class="p">)</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span> +</span><span id="L-364"><a href="#L-364"><span class="linenos">364</span></a> <span class="n">itertools</span><span class="o">.</span><span class="n">zip_longest</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">selects</span><span class="p">,</span> <span class="n">scope</span><span class="o">.</span><span class="n">outer_column_list</span><span class="p">)</span> +</span><span id="L-365"><a href="#L-365"><span class="linenos">365</span></a> <span class="p">):</span> +</span><span id="L-366"><a href="#L-366"><span class="linenos">366</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">selection</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">):</span> +</span><span id="L-367"><a href="#L-367"><span class="linenos">367</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">selection</span><span class="o">.</span><span class="n">output_name</span><span class="p">:</span> +</span><span id="L-368"><a href="#L-368"><span class="linenos">368</span></a> <span class="n">selection</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="sa">f</span><span class="s2">"_col_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">"</span><span class="p">)))</span> +</span><span id="L-369"><a href="#L-369"><span class="linenos">369</span></a> <span class="k">elif</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">selection</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Alias</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">selection</span><span class="o">.</span><span class="n">is_star</span><span class="p">:</span> +</span><span id="L-370"><a href="#L-370"><span class="linenos">370</span></a> <span class="n">alias_</span> <span class="o">=</span> <span class="n">alias</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="s2">""</span><span class="p">),</span> <span class="n">alias</span><span class="o">=</span><span class="n">selection</span><span class="o">.</span><span class="n">output_name</span> <span class="ow">or</span> <span class="sa">f</span><span class="s2">"_col_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="L-371"><a href="#L-371"><span class="linenos">371</span></a> <span class="n">alias_</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"this"</span><span class="p">,</span> <span class="n">selection</span><span class="p">)</span> +</span><span id="L-372"><a href="#L-372"><span class="linenos">372</span></a> <span class="n">selection</span> <span class="o">=</span> <span class="n">alias_</span> +</span><span id="L-373"><a href="#L-373"><span class="linenos">373</span></a> +</span><span id="L-374"><a href="#L-374"><span class="linenos">374</span></a> <span class="k">if</span> <span class="n">aliased_column</span><span class="p">:</span> +</span><span id="L-375"><a href="#L-375"><span class="linenos">375</span></a> <span class="n">selection</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">aliased_column</span><span class="p">))</span> +</span><span id="L-376"><a href="#L-376"><span class="linenos">376</span></a> +</span><span id="L-377"><a href="#L-377"><span class="linenos">377</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">selection</span><span class="p">)</span> +</span><span id="L-378"><a href="#L-378"><span class="linenos">378</span></a> +</span><span id="L-379"><a href="#L-379"><span class="linenos">379</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="n">new_selections</span><span class="p">)</span> +</span><span id="L-380"><a href="#L-380"><span class="linenos">380</span></a> +</span><span id="L-381"><a href="#L-381"><span class="linenos">381</span></a> +</span><span id="L-382"><a href="#L-382"><span class="linenos">382</span></a><span class="k">class</span> <span class="nc">Resolver</span><span class="p">:</span> +</span><span id="L-383"><a href="#L-383"><span class="linenos">383</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-384"><a href="#L-384"><span class="linenos">384</span></a><span class="sd"> Helper for resolving columns.</span> +</span><span id="L-385"><a href="#L-385"><span class="linenos">385</span></a> +</span><span id="L-386"><a href="#L-386"><span class="linenos">386</span></a><span class="sd"> This is a class so we can lazily load some things and easily share them across functions.</span> +</span><span id="L-387"><a href="#L-387"><span class="linenos">387</span></a><span class="sd"> """</span> +</span><span id="L-388"><a href="#L-388"><span class="linenos">388</span></a> +</span><span id="L-389"><a href="#L-389"><span class="linenos">389</span></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">):</span> +</span><span id="L-390"><a href="#L-390"><span class="linenos">390</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span> <span class="o">=</span> <span class="n">scope</span> +</span><span id="L-391"><a href="#L-391"><span class="linenos">391</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span> +</span><span id="L-392"><a href="#L-392"><span class="linenos">392</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-393"><a href="#L-393"><span class="linenos">393</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-394"><a href="#L-394"><span class="linenos">394</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-395"><a href="#L-395"><span class="linenos">395</span></a> +</span><span id="L-396"><a href="#L-396"><span class="linenos">396</span></a> <span class="k">def</span> <span class="nf">get_table</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">column_name</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">]:</span> +</span><span id="L-397"><a href="#L-397"><span class="linenos">397</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-398"><a href="#L-398"><span class="linenos">398</span></a><span class="sd"> Get the table for a column name.</span> +</span><span id="L-399"><a href="#L-399"><span class="linenos">399</span></a> +</span><span id="L-400"><a href="#L-400"><span class="linenos">400</span></a><span class="sd"> Args:</span> +</span><span id="L-401"><a href="#L-401"><span class="linenos">401</span></a><span class="sd"> column_name: The column name to find the table for.</span> +</span><span id="L-402"><a href="#L-402"><span class="linenos">402</span></a><span class="sd"> Returns:</span> +</span><span id="L-403"><a href="#L-403"><span class="linenos">403</span></a><span class="sd"> The table name if it can be found/inferred.</span> +</span><span id="L-404"><a href="#L-404"><span class="linenos">404</span></a><span class="sd"> """</span> +</span><span id="L-405"><a href="#L-405"><span class="linenos">405</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> +</span><span id="L-406"><a href="#L-406"><span class="linenos">406</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_unambiguous_columns</span><span class="p">(</span> +</span><span id="L-407"><a href="#L-407"><span class="linenos">407</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span> +</span><span id="L-408"><a href="#L-408"><span class="linenos">408</span></a> <span class="p">)</span> +</span><span id="L-409"><a href="#L-409"><span class="linenos">409</span></a> +</span><span id="L-410"><a href="#L-410"><span class="linenos">410</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column_name</span><span class="p">)</span> +</span><span id="L-411"><a href="#L-411"><span class="linenos">411</span></a> +</span><span id="L-412"><a href="#L-412"><span class="linenos">412</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_name</span><span class="p">:</span> +</span><span id="L-413"><a href="#L-413"><span class="linenos">413</span></a> <span class="n">sources_without_schema</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span> +</span><span id="L-414"><a href="#L-414"><span class="linenos">414</span></a> <span class="n">source</span> +</span><span id="L-415"><a href="#L-415"><span class="linenos">415</span></a> <span class="k">for</span> <span class="n">source</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> +</span><span id="L-416"><a href="#L-416"><span class="linenos">416</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">columns</span> <span class="ow">or</span> <span class="s2">"*"</span> <span class="ow">in</span> <span class="n">columns</span> +</span><span id="L-417"><a href="#L-417"><span class="linenos">417</span></a> <span class="p">)</span> +</span><span id="L-418"><a href="#L-418"><span class="linenos">418</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">sources_without_schema</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> +</span><span id="L-419"><a href="#L-419"><span class="linenos">419</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="n">sources_without_schema</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> +</span><span id="L-420"><a href="#L-420"><span class="linenos">420</span></a> +</span><span id="L-421"><a href="#L-421"><span class="linenos">421</span></a> <span class="k">if</span> <span class="n">table_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">:</span> +</span><span id="L-422"><a href="#L-422"><span class="linenos">422</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> +</span><span id="L-423"><a href="#L-423"><span class="linenos">423</span></a> +</span><span id="L-424"><a href="#L-424"><span class="linenos">424</span></a> <span class="n">node</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> +</span><span id="L-425"><a href="#L-425"><span class="linenos">425</span></a> +</span><span id="L-426"><a href="#L-426"><span class="linenos">426</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">):</span> +</span><span id="L-427"><a href="#L-427"><span class="linenos">427</span></a> <span class="k">while</span> <span class="n">node</span> <span class="ow">and</span> <span class="n">node</span><span class="o">.</span><span class="n">alias</span> <span class="o">!=</span> <span class="n">table_name</span><span class="p">:</span> +</span><span id="L-428"><a href="#L-428"><span class="linenos">428</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> +</span><span id="L-429"><a href="#L-429"><span class="linenos">429</span></a> +</span><span id="L-430"><a href="#L-430"><span class="linenos">430</span></a> <span class="n">node_alias</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> +</span><span id="L-431"><a href="#L-431"><span class="linenos">431</span></a> <span class="k">if</span> <span class="n">node_alias</span><span class="p">:</span> +</span><span id="L-432"><a href="#L-432"><span class="linenos">432</span></a> <span class="k">return</span> <span class="n">node_alias</span><span class="o">.</span><span class="n">this</span> </span><span id="L-433"><a href="#L-433"><span class="linenos">433</span></a> -</span><span id="L-434"><a href="#L-434"><span class="linenos">434</span></a> <span class="c1"># Otherwise, if referencing another scope, return that scope's named selects</span> -</span><span id="L-435"><a href="#L-435"><span class="linenos">435</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">named_selects</span> -</span><span id="L-436"><a href="#L-436"><span class="linenos">436</span></a> -</span><span id="L-437"><a href="#L-437"><span class="linenos">437</span></a> <span class="k">def</span> <span class="nf">_get_all_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> -</span><span id="L-438"><a href="#L-438"><span class="linenos">438</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> -</span><span id="L-439"><a href="#L-439"><span class="linenos">439</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="p">{</span> -</span><span id="L-440"><a href="#L-440"><span class="linenos">440</span></a> <span class="n">k</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">k</span><span class="p">)</span> -</span><span id="L-441"><a href="#L-441"><span class="linenos">441</span></a> <span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">lateral_sources</span><span class="p">)</span> -</span><span id="L-442"><a href="#L-442"><span class="linenos">442</span></a> <span class="p">}</span> -</span><span id="L-443"><a href="#L-443"><span class="linenos">443</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> -</span><span id="L-444"><a href="#L-444"><span class="linenos">444</span></a> -</span><span id="L-445"><a href="#L-445"><span class="linenos">445</span></a> <span class="k">def</span> <span class="nf">_get_unambiguous_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">source_columns</span><span class="p">):</span> -</span><span id="L-446"><a href="#L-446"><span class="linenos">446</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-447"><a href="#L-447"><span class="linenos">447</span></a><span class="sd"> Find all the unambiguous columns in sources.</span> -</span><span id="L-448"><a href="#L-448"><span class="linenos">448</span></a> -</span><span id="L-449"><a href="#L-449"><span class="linenos">449</span></a><span class="sd"> Args:</span> -</span><span id="L-450"><a href="#L-450"><span class="linenos">450</span></a><span class="sd"> source_columns (dict): Mapping of names to source columns</span> -</span><span id="L-451"><a href="#L-451"><span class="linenos">451</span></a><span class="sd"> Returns:</span> -</span><span id="L-452"><a href="#L-452"><span class="linenos">452</span></a><span class="sd"> dict: Mapping of column name to source name</span> -</span><span id="L-453"><a href="#L-453"><span class="linenos">453</span></a><span class="sd"> """</span> -</span><span id="L-454"><a href="#L-454"><span class="linenos">454</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source_columns</span><span class="p">:</span> -</span><span id="L-455"><a href="#L-455"><span class="linenos">455</span></a> <span class="k">return</span> <span class="p">{}</span> -</span><span id="L-456"><a href="#L-456"><span class="linenos">456</span></a> -</span><span id="L-457"><a href="#L-457"><span class="linenos">457</span></a> <span class="n">source_columns</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">source_columns</span><span class="o">.</span><span class="n">items</span><span class="p">())</span> -</span><span id="L-458"><a href="#L-458"><span class="linenos">458</span></a> -</span><span id="L-459"><a href="#L-459"><span class="linenos">459</span></a> <span class="n">first_table</span><span class="p">,</span> <span class="n">first_columns</span> <span class="o">=</span> <span class="n">source_columns</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> -</span><span id="L-460"><a href="#L-460"><span class="linenos">460</span></a> <span class="n">unambiguous_columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">col</span><span class="p">:</span> <span class="n">first_table</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">first_columns</span><span class="p">)}</span> -</span><span id="L-461"><a href="#L-461"><span class="linenos">461</span></a> <span class="n">all_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">unambiguous_columns</span><span class="p">)</span> -</span><span id="L-462"><a href="#L-462"><span class="linenos">462</span></a> -</span><span id="L-463"><a href="#L-463"><span class="linenos">463</span></a> <span class="k">for</span> <span class="n">table</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="n">source_columns</span><span class="p">[</span><span class="mi">1</span><span class="p">:]:</span> -</span><span id="L-464"><a href="#L-464"><span class="linenos">464</span></a> <span class="n">unique</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span> -</span><span id="L-465"><a href="#L-465"><span class="linenos">465</span></a> <span class="n">ambiguous</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">all_columns</span><span class="p">)</span><span class="o">.</span><span class="n">intersection</span><span class="p">(</span><span class="n">unique</span><span class="p">)</span> -</span><span id="L-466"><a href="#L-466"><span class="linenos">466</span></a> <span class="n">all_columns</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span> -</span><span id="L-467"><a href="#L-467"><span class="linenos">467</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">ambiguous</span><span class="p">:</span> -</span><span id="L-468"><a href="#L-468"><span class="linenos">468</span></a> <span class="n">unambiguous_columns</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> -</span><span id="L-469"><a href="#L-469"><span class="linenos">469</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">unique</span><span class="o">.</span><span class="n">difference</span><span class="p">(</span><span class="n">ambiguous</span><span class="p">):</span> -</span><span id="L-470"><a href="#L-470"><span class="linenos">470</span></a> <span class="n">unambiguous_columns</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">table</span> +</span><span id="L-434"><a href="#L-434"><span class="linenos">434</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span> +</span><span id="L-435"><a href="#L-435"><span class="linenos">435</span></a> <span class="n">table_name</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">quoted</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">)</span> <span class="k">else</span> <span class="kc">None</span> +</span><span id="L-436"><a href="#L-436"><span class="linenos">436</span></a> <span class="p">)</span> +</span><span id="L-437"><a href="#L-437"><span class="linenos">437</span></a> +</span><span id="L-438"><a href="#L-438"><span class="linenos">438</span></a> <span class="nd">@property</span> +</span><span id="L-439"><a href="#L-439"><span class="linenos">439</span></a> <span class="k">def</span> <span class="nf">all_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> +</span><span id="L-440"><a href="#L-440"><span class="linenos">440</span></a><span class="w"> </span><span class="sd">"""All available columns of all sources in this scope"""</span> +</span><span id="L-441"><a href="#L-441"><span class="linenos">441</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> +</span><span id="L-442"><a href="#L-442"><span class="linenos">442</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="p">{</span> +</span><span id="L-443"><a href="#L-443"><span class="linenos">443</span></a> <span class="n">column</span> <span class="k">for</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">values</span><span class="p">()</span> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span> +</span><span id="L-444"><a href="#L-444"><span class="linenos">444</span></a> <span class="p">}</span> +</span><span id="L-445"><a href="#L-445"><span class="linenos">445</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> +</span><span id="L-446"><a href="#L-446"><span class="linenos">446</span></a> +</span><span id="L-447"><a href="#L-447"><span class="linenos">447</span></a> <span class="k">def</span> <span class="nf">get_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">only_visible</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> +</span><span id="L-448"><a href="#L-448"><span class="linenos">448</span></a><span class="w"> </span><span class="sd">"""Resolve the source columns for a given source `name`"""</span> +</span><span id="L-449"><a href="#L-449"><span class="linenos">449</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> +</span><span id="L-450"><a href="#L-450"><span class="linenos">450</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="L-451"><a href="#L-451"><span class="linenos">451</span></a> +</span><span id="L-452"><a href="#L-452"><span class="linenos">452</span></a> <span class="n">source</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> +</span><span id="L-453"><a href="#L-453"><span class="linenos">453</span></a> +</span><span id="L-454"><a href="#L-454"><span class="linenos">454</span></a> <span class="c1"># If referencing a table, return the columns from the schema</span> +</span><span id="L-455"><a href="#L-455"><span class="linenos">455</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> +</span><span id="L-456"><a href="#L-456"><span class="linenos">456</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">column_names</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">only_visible</span><span class="p">)</span> +</span><span id="L-457"><a href="#L-457"><span class="linenos">457</span></a> +</span><span id="L-458"><a href="#L-458"><span class="linenos">458</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">):</span> +</span><span id="L-459"><a href="#L-459"><span class="linenos">459</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span> +</span><span id="L-460"><a href="#L-460"><span class="linenos">460</span></a> +</span><span id="L-461"><a href="#L-461"><span class="linenos">461</span></a> <span class="c1"># Otherwise, if referencing another scope, return that scope's named selects</span> +</span><span id="L-462"><a href="#L-462"><span class="linenos">462</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">named_selects</span> +</span><span id="L-463"><a href="#L-463"><span class="linenos">463</span></a> +</span><span id="L-464"><a href="#L-464"><span class="linenos">464</span></a> <span class="k">def</span> <span class="nf">_get_all_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> +</span><span id="L-465"><a href="#L-465"><span class="linenos">465</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> +</span><span id="L-466"><a href="#L-466"><span class="linenos">466</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="p">{</span> +</span><span id="L-467"><a href="#L-467"><span class="linenos">467</span></a> <span class="n">k</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">k</span><span class="p">)</span> +</span><span id="L-468"><a href="#L-468"><span class="linenos">468</span></a> <span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">lateral_sources</span><span class="p">)</span> +</span><span id="L-469"><a href="#L-469"><span class="linenos">469</span></a> <span class="p">}</span> +</span><span id="L-470"><a href="#L-470"><span class="linenos">470</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> </span><span id="L-471"><a href="#L-471"><span class="linenos">471</span></a> -</span><span id="L-472"><a href="#L-472"><span class="linenos">472</span></a> <span class="k">return</span> <span class="n">unambiguous_columns</span> -</span><span id="L-473"><a href="#L-473"><span class="linenos">473</span></a> -</span><span id="L-474"><a href="#L-474"><span class="linenos">474</span></a> <span class="nd">@staticmethod</span> -</span><span id="L-475"><a href="#L-475"><span class="linenos">475</span></a> <span class="k">def</span> <span class="nf">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">):</span> -</span><span id="L-476"><a href="#L-476"><span class="linenos">476</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-477"><a href="#L-477"><span class="linenos">477</span></a><span class="sd"> Find the unique columns in a list of columns.</span> -</span><span id="L-478"><a href="#L-478"><span class="linenos">478</span></a> -</span><span id="L-479"><a href="#L-479"><span class="linenos">479</span></a><span class="sd"> Example:</span> -</span><span id="L-480"><a href="#L-480"><span class="linenos">480</span></a><span class="sd"> >>> sorted(Resolver._find_unique_columns(["a", "b", "b", "c"]))</span> -</span><span id="L-481"><a href="#L-481"><span class="linenos">481</span></a><span class="sd"> ['a', 'c']</span> -</span><span id="L-482"><a href="#L-482"><span class="linenos">482</span></a> -</span><span id="L-483"><a href="#L-483"><span class="linenos">483</span></a><span class="sd"> This is necessary because duplicate column names are ambiguous.</span> -</span><span id="L-484"><a href="#L-484"><span class="linenos">484</span></a><span class="sd"> """</span> -</span><span id="L-485"><a href="#L-485"><span class="linenos">485</span></a> <span class="n">counts</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="L-486"><a href="#L-486"><span class="linenos">486</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> -</span><span id="L-487"><a href="#L-487"><span class="linenos">487</span></a> <span class="n">counts</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">counts</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span> -</span><span id="L-488"><a href="#L-488"><span class="linenos">488</span></a> <span class="k">return</span> <span class="p">{</span><span class="n">column</span> <span class="k">for</span> <span class="n">column</span><span class="p">,</span> <span class="n">count</span> <span class="ow">in</span> <span class="n">counts</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> <span class="k">if</span> <span class="n">count</span> <span class="o">==</span> <span class="mi">1</span><span class="p">}</span> +</span><span id="L-472"><a href="#L-472"><span class="linenos">472</span></a> <span class="k">def</span> <span class="nf">_get_unambiguous_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">source_columns</span><span class="p">):</span> +</span><span id="L-473"><a href="#L-473"><span class="linenos">473</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-474"><a href="#L-474"><span class="linenos">474</span></a><span class="sd"> Find all the unambiguous columns in sources.</span> +</span><span id="L-475"><a href="#L-475"><span class="linenos">475</span></a> +</span><span id="L-476"><a href="#L-476"><span class="linenos">476</span></a><span class="sd"> Args:</span> +</span><span id="L-477"><a href="#L-477"><span class="linenos">477</span></a><span class="sd"> source_columns (dict): Mapping of names to source columns</span> +</span><span id="L-478"><a href="#L-478"><span class="linenos">478</span></a><span class="sd"> Returns:</span> +</span><span id="L-479"><a href="#L-479"><span class="linenos">479</span></a><span class="sd"> dict: Mapping of column name to source name</span> +</span><span id="L-480"><a href="#L-480"><span class="linenos">480</span></a><span class="sd"> """</span> +</span><span id="L-481"><a href="#L-481"><span class="linenos">481</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source_columns</span><span class="p">:</span> +</span><span id="L-482"><a href="#L-482"><span class="linenos">482</span></a> <span class="k">return</span> <span class="p">{}</span> +</span><span id="L-483"><a href="#L-483"><span class="linenos">483</span></a> +</span><span id="L-484"><a href="#L-484"><span class="linenos">484</span></a> <span class="n">source_columns</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">source_columns</span><span class="o">.</span><span class="n">items</span><span class="p">())</span> +</span><span id="L-485"><a href="#L-485"><span class="linenos">485</span></a> +</span><span id="L-486"><a href="#L-486"><span class="linenos">486</span></a> <span class="n">first_table</span><span class="p">,</span> <span class="n">first_columns</span> <span class="o">=</span> <span class="n">source_columns</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> +</span><span id="L-487"><a href="#L-487"><span class="linenos">487</span></a> <span class="n">unambiguous_columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">col</span><span class="p">:</span> <span class="n">first_table</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">first_columns</span><span class="p">)}</span> +</span><span id="L-488"><a href="#L-488"><span class="linenos">488</span></a> <span class="n">all_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">unambiguous_columns</span><span class="p">)</span> +</span><span id="L-489"><a href="#L-489"><span class="linenos">489</span></a> +</span><span id="L-490"><a href="#L-490"><span class="linenos">490</span></a> <span class="k">for</span> <span class="n">table</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="n">source_columns</span><span class="p">[</span><span class="mi">1</span><span class="p">:]:</span> +</span><span id="L-491"><a href="#L-491"><span class="linenos">491</span></a> <span class="n">unique</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span> +</span><span id="L-492"><a href="#L-492"><span class="linenos">492</span></a> <span class="n">ambiguous</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">all_columns</span><span class="p">)</span><span class="o">.</span><span class="n">intersection</span><span class="p">(</span><span class="n">unique</span><span class="p">)</span> +</span><span id="L-493"><a href="#L-493"><span class="linenos">493</span></a> <span class="n">all_columns</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span> +</span><span id="L-494"><a href="#L-494"><span class="linenos">494</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">ambiguous</span><span class="p">:</span> +</span><span id="L-495"><a href="#L-495"><span class="linenos">495</span></a> <span class="n">unambiguous_columns</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> +</span><span id="L-496"><a href="#L-496"><span class="linenos">496</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">unique</span><span class="o">.</span><span class="n">difference</span><span class="p">(</span><span class="n">ambiguous</span><span class="p">):</span> +</span><span id="L-497"><a href="#L-497"><span class="linenos">497</span></a> <span class="n">unambiguous_columns</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">table</span> +</span><span id="L-498"><a href="#L-498"><span class="linenos">498</span></a> +</span><span id="L-499"><a href="#L-499"><span class="linenos">499</span></a> <span class="k">return</span> <span class="n">unambiguous_columns</span> +</span><span id="L-500"><a href="#L-500"><span class="linenos">500</span></a> +</span><span id="L-501"><a href="#L-501"><span class="linenos">501</span></a> <span class="nd">@staticmethod</span> +</span><span id="L-502"><a href="#L-502"><span class="linenos">502</span></a> <span class="k">def</span> <span class="nf">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">):</span> +</span><span id="L-503"><a href="#L-503"><span class="linenos">503</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-504"><a href="#L-504"><span class="linenos">504</span></a><span class="sd"> Find the unique columns in a list of columns.</span> +</span><span id="L-505"><a href="#L-505"><span class="linenos">505</span></a> +</span><span id="L-506"><a href="#L-506"><span class="linenos">506</span></a><span class="sd"> Example:</span> +</span><span id="L-507"><a href="#L-507"><span class="linenos">507</span></a><span class="sd"> >>> sorted(Resolver._find_unique_columns(["a", "b", "b", "c"]))</span> +</span><span id="L-508"><a href="#L-508"><span class="linenos">508</span></a><span class="sd"> ['a', 'c']</span> +</span><span id="L-509"><a href="#L-509"><span class="linenos">509</span></a> +</span><span id="L-510"><a href="#L-510"><span class="linenos">510</span></a><span class="sd"> This is necessary because duplicate column names are ambiguous.</span> +</span><span id="L-511"><a href="#L-511"><span class="linenos">511</span></a><span class="sd"> """</span> +</span><span id="L-512"><a href="#L-512"><span class="linenos">512</span></a> <span class="n">counts</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="L-513"><a href="#L-513"><span class="linenos">513</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> +</span><span id="L-514"><a href="#L-514"><span class="linenos">514</span></a> <span class="n">counts</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">counts</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span> +</span><span id="L-515"><a href="#L-515"><span class="linenos">515</span></a> <span class="k">return</span> <span class="p">{</span><span class="n">column</span> <span class="k">for</span> <span class="n">column</span><span class="p">,</span> <span class="n">count</span> <span class="ow">in</span> <span class="n">counts</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> <span class="k">if</span> <span class="n">count</span> <span class="o">==</span> <span class="mi">1</span><span class="p">}</span> </span></pre></div> @@ -603,15 +630,16 @@ </span><span id="qualify_columns-31"><a href="#qualify_columns-31"><span class="linenos">31</span></a> <span class="n">resolver</span> <span class="o">=</span> <span class="n">Resolver</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">)</span> </span><span id="qualify_columns-32"><a href="#qualify_columns-32"><span class="linenos">32</span></a> <span class="n">_pop_table_column_aliases</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">ctes</span><span class="p">)</span> </span><span id="qualify_columns-33"><a href="#qualify_columns-33"><span class="linenos">33</span></a> <span class="n">_pop_table_column_aliases</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">derived_tables</span><span class="p">)</span> -</span><span id="qualify_columns-34"><a href="#qualify_columns-34"><span class="linenos">34</span></a> <span class="n">_expand_using</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="qualify_columns-34"><a href="#qualify_columns-34"><span class="linenos">34</span></a> <span class="n">using_column_tables</span> <span class="o">=</span> <span class="n">_expand_using</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> </span><span id="qualify_columns-35"><a href="#qualify_columns-35"><span class="linenos">35</span></a> <span class="n">_qualify_columns</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> </span><span id="qualify_columns-36"><a href="#qualify_columns-36"><span class="linenos">36</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">):</span> -</span><span id="qualify_columns-37"><a href="#qualify_columns-37"><span class="linenos">37</span></a> <span class="n">_expand_stars</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="qualify_columns-37"><a href="#qualify_columns-37"><span class="linenos">37</span></a> <span class="n">_expand_stars</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">,</span> <span class="n">using_column_tables</span><span class="p">)</span> </span><span id="qualify_columns-38"><a href="#qualify_columns-38"><span class="linenos">38</span></a> <span class="n">_qualify_outputs</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> -</span><span id="qualify_columns-39"><a href="#qualify_columns-39"><span class="linenos">39</span></a> <span class="n">_expand_group_by</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> -</span><span id="qualify_columns-40"><a href="#qualify_columns-40"><span class="linenos">40</span></a> <span class="n">_expand_order_by</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> -</span><span id="qualify_columns-41"><a href="#qualify_columns-41"><span class="linenos">41</span></a> -</span><span id="qualify_columns-42"><a href="#qualify_columns-42"><span class="linenos">42</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="qualify_columns-39"><a href="#qualify_columns-39"><span class="linenos">39</span></a> <span class="n">_expand_alias_refs</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="qualify_columns-40"><a href="#qualify_columns-40"><span class="linenos">40</span></a> <span class="n">_expand_group_by</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="qualify_columns-41"><a href="#qualify_columns-41"><span class="linenos">41</span></a> <span class="n">_expand_order_by</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> +</span><span id="qualify_columns-42"><a href="#qualify_columns-42"><span class="linenos">42</span></a> +</span><span id="qualify_columns-43"><a href="#qualify_columns-43"><span class="linenos">43</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -657,19 +685,19 @@ </div> <a class="headerlink" href="#validate_qualify_columns"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="validate_qualify_columns-45"><a href="#validate_qualify_columns-45"><span class="linenos">45</span></a><span class="k">def</span> <span class="nf">validate_qualify_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="validate_qualify_columns-46"><a href="#validate_qualify_columns-46"><span class="linenos">46</span></a><span class="w"> </span><span class="sd">"""Raise an `OptimizeError` if any columns aren't qualified"""</span> -</span><span id="validate_qualify_columns-47"><a href="#validate_qualify_columns-47"><span class="linenos">47</span></a> <span class="n">unqualified_columns</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="validate_qualify_columns-48"><a href="#validate_qualify_columns-48"><span class="linenos">48</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="validate_qualify_columns-49"><a href="#validate_qualify_columns-49"><span class="linenos">49</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> -</span><span id="validate_qualify_columns-50"><a href="#validate_qualify_columns-50"><span class="linenos">50</span></a> <span class="n">unqualified_columns</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">unqualified_columns</span><span class="p">)</span> -</span><span id="validate_qualify_columns-51"><a href="#validate_qualify_columns-51"><span class="linenos">51</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">external_columns</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">is_correlated_subquery</span><span class="p">:</span> -</span><span id="validate_qualify_columns-52"><a href="#validate_qualify_columns-52"><span class="linenos">52</span></a> <span class="n">column</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">external_columns</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> -</span><span id="validate_qualify_columns-53"><a href="#validate_qualify_columns-53"><span class="linenos">53</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: '</span><span class="si">{</span><span class="n">column</span><span class="o">.</span><span class="n">table</span><span class="si">}</span><span class="s2">' for column '</span><span class="si">{</span><span class="n">column</span><span class="si">}</span><span class="s2">'"</span><span class="p">)</span> -</span><span id="validate_qualify_columns-54"><a href="#validate_qualify_columns-54"><span class="linenos">54</span></a> -</span><span id="validate_qualify_columns-55"><a href="#validate_qualify_columns-55"><span class="linenos">55</span></a> <span class="k">if</span> <span class="n">unqualified_columns</span><span class="p">:</span> -</span><span id="validate_qualify_columns-56"><a href="#validate_qualify_columns-56"><span class="linenos">56</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Ambiguous columns: </span><span class="si">{</span><span class="n">unqualified_columns</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="validate_qualify_columns-57"><a href="#validate_qualify_columns-57"><span class="linenos">57</span></a> <span class="k">return</span> <span class="n">expression</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="validate_qualify_columns-46"><a href="#validate_qualify_columns-46"><span class="linenos">46</span></a><span class="k">def</span> <span class="nf">validate_qualify_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="validate_qualify_columns-47"><a href="#validate_qualify_columns-47"><span class="linenos">47</span></a><span class="w"> </span><span class="sd">"""Raise an `OptimizeError` if any columns aren't qualified"""</span> +</span><span id="validate_qualify_columns-48"><a href="#validate_qualify_columns-48"><span class="linenos">48</span></a> <span class="n">unqualified_columns</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="validate_qualify_columns-49"><a href="#validate_qualify_columns-49"><span class="linenos">49</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="validate_qualify_columns-50"><a href="#validate_qualify_columns-50"><span class="linenos">50</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> +</span><span id="validate_qualify_columns-51"><a href="#validate_qualify_columns-51"><span class="linenos">51</span></a> <span class="n">unqualified_columns</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">unqualified_columns</span><span class="p">)</span> +</span><span id="validate_qualify_columns-52"><a href="#validate_qualify_columns-52"><span class="linenos">52</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">external_columns</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">is_correlated_subquery</span><span class="p">:</span> +</span><span id="validate_qualify_columns-53"><a href="#validate_qualify_columns-53"><span class="linenos">53</span></a> <span class="n">column</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">external_columns</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> +</span><span id="validate_qualify_columns-54"><a href="#validate_qualify_columns-54"><span class="linenos">54</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: '</span><span class="si">{</span><span class="n">column</span><span class="o">.</span><span class="n">table</span><span class="si">}</span><span class="s2">' for column '</span><span class="si">{</span><span class="n">column</span><span class="si">}</span><span class="s2">'"</span><span class="p">)</span> +</span><span id="validate_qualify_columns-55"><a href="#validate_qualify_columns-55"><span class="linenos">55</span></a> +</span><span id="validate_qualify_columns-56"><a href="#validate_qualify_columns-56"><span class="linenos">56</span></a> <span class="k">if</span> <span class="n">unqualified_columns</span><span class="p">:</span> +</span><span id="validate_qualify_columns-57"><a href="#validate_qualify_columns-57"><span class="linenos">57</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Ambiguous columns: </span><span class="si">{</span><span class="n">unqualified_columns</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="validate_qualify_columns-58"><a href="#validate_qualify_columns-58"><span class="linenos">58</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -689,140 +717,140 @@ </div> <a class="headerlink" href="#Resolver"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="Resolver-356"><a href="#Resolver-356"><span class="linenos">356</span></a><span class="k">class</span> <span class="nc">Resolver</span><span class="p">:</span> -</span><span id="Resolver-357"><a href="#Resolver-357"><span class="linenos">357</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="Resolver-358"><a href="#Resolver-358"><span class="linenos">358</span></a><span class="sd"> Helper for resolving columns.</span> -</span><span id="Resolver-359"><a href="#Resolver-359"><span class="linenos">359</span></a> -</span><span id="Resolver-360"><a href="#Resolver-360"><span class="linenos">360</span></a><span class="sd"> This is a class so we can lazily load some things and easily share them across functions.</span> -</span><span id="Resolver-361"><a href="#Resolver-361"><span class="linenos">361</span></a><span class="sd"> """</span> -</span><span id="Resolver-362"><a href="#Resolver-362"><span class="linenos">362</span></a> -</span><span id="Resolver-363"><a href="#Resolver-363"><span class="linenos">363</span></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">):</span> -</span><span id="Resolver-364"><a href="#Resolver-364"><span class="linenos">364</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span> <span class="o">=</span> <span class="n">scope</span> -</span><span id="Resolver-365"><a href="#Resolver-365"><span class="linenos">365</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span> -</span><span id="Resolver-366"><a href="#Resolver-366"><span class="linenos">366</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="Resolver-367"><a href="#Resolver-367"><span class="linenos">367</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="Resolver-368"><a href="#Resolver-368"><span class="linenos">368</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="Resolver-369"><a href="#Resolver-369"><span class="linenos">369</span></a> -</span><span id="Resolver-370"><a href="#Resolver-370"><span class="linenos">370</span></a> <span class="k">def</span> <span class="nf">get_table</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">column_name</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">]:</span> -</span><span id="Resolver-371"><a href="#Resolver-371"><span class="linenos">371</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="Resolver-372"><a href="#Resolver-372"><span class="linenos">372</span></a><span class="sd"> Get the table for a column name.</span> -</span><span id="Resolver-373"><a href="#Resolver-373"><span class="linenos">373</span></a> -</span><span id="Resolver-374"><a href="#Resolver-374"><span class="linenos">374</span></a><span class="sd"> Args:</span> -</span><span id="Resolver-375"><a href="#Resolver-375"><span class="linenos">375</span></a><span class="sd"> column_name: The column name to find the table for.</span> -</span><span id="Resolver-376"><a href="#Resolver-376"><span class="linenos">376</span></a><span class="sd"> Returns:</span> -</span><span id="Resolver-377"><a href="#Resolver-377"><span class="linenos">377</span></a><span class="sd"> The table name if it can be found/inferred.</span> -</span><span id="Resolver-378"><a href="#Resolver-378"><span class="linenos">378</span></a><span class="sd"> """</span> -</span><span id="Resolver-379"><a href="#Resolver-379"><span class="linenos">379</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> -</span><span id="Resolver-380"><a href="#Resolver-380"><span class="linenos">380</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_unambiguous_columns</span><span class="p">(</span> -</span><span id="Resolver-381"><a href="#Resolver-381"><span class="linenos">381</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span> -</span><span id="Resolver-382"><a href="#Resolver-382"><span class="linenos">382</span></a> <span class="p">)</span> -</span><span id="Resolver-383"><a href="#Resolver-383"><span class="linenos">383</span></a> -</span><span id="Resolver-384"><a href="#Resolver-384"><span class="linenos">384</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column_name</span><span class="p">)</span> -</span><span id="Resolver-385"><a href="#Resolver-385"><span class="linenos">385</span></a> -</span><span id="Resolver-386"><a href="#Resolver-386"><span class="linenos">386</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_name</span><span class="p">:</span> -</span><span id="Resolver-387"><a href="#Resolver-387"><span class="linenos">387</span></a> <span class="n">sources_without_schema</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span> -</span><span id="Resolver-388"><a href="#Resolver-388"><span class="linenos">388</span></a> <span class="n">source</span> -</span><span id="Resolver-389"><a href="#Resolver-389"><span class="linenos">389</span></a> <span class="k">for</span> <span class="n">source</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> -</span><span id="Resolver-390"><a href="#Resolver-390"><span class="linenos">390</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">columns</span> <span class="ow">or</span> <span class="s2">"*"</span> <span class="ow">in</span> <span class="n">columns</span> -</span><span id="Resolver-391"><a href="#Resolver-391"><span class="linenos">391</span></a> <span class="p">)</span> -</span><span id="Resolver-392"><a href="#Resolver-392"><span class="linenos">392</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">sources_without_schema</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> -</span><span id="Resolver-393"><a href="#Resolver-393"><span class="linenos">393</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="n">sources_without_schema</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> -</span><span id="Resolver-394"><a href="#Resolver-394"><span class="linenos">394</span></a> -</span><span id="Resolver-395"><a href="#Resolver-395"><span class="linenos">395</span></a> <span class="k">if</span> <span class="n">table_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">:</span> -</span><span id="Resolver-396"><a href="#Resolver-396"><span class="linenos">396</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> -</span><span id="Resolver-397"><a href="#Resolver-397"><span class="linenos">397</span></a> -</span><span id="Resolver-398"><a href="#Resolver-398"><span class="linenos">398</span></a> <span class="n">node</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> -</span><span id="Resolver-399"><a href="#Resolver-399"><span class="linenos">399</span></a> -</span><span id="Resolver-400"><a href="#Resolver-400"><span class="linenos">400</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">):</span> -</span><span id="Resolver-401"><a href="#Resolver-401"><span class="linenos">401</span></a> <span class="k">while</span> <span class="n">node</span> <span class="ow">and</span> <span class="n">node</span><span class="o">.</span><span class="n">alias</span> <span class="o">!=</span> <span class="n">table_name</span><span class="p">:</span> -</span><span id="Resolver-402"><a href="#Resolver-402"><span class="linenos">402</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> -</span><span id="Resolver-403"><a href="#Resolver-403"><span class="linenos">403</span></a> -</span><span id="Resolver-404"><a href="#Resolver-404"><span class="linenos">404</span></a> <span class="n">node_alias</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> -</span><span id="Resolver-405"><a href="#Resolver-405"><span class="linenos">405</span></a> <span class="k">if</span> <span class="n">node_alias</span><span class="p">:</span> -</span><span id="Resolver-406"><a href="#Resolver-406"><span class="linenos">406</span></a> <span class="k">return</span> <span class="n">node_alias</span><span class="o">.</span><span class="n">this</span> -</span><span id="Resolver-407"><a href="#Resolver-407"><span class="linenos">407</span></a> -</span><span id="Resolver-408"><a href="#Resolver-408"><span class="linenos">408</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span> -</span><span id="Resolver-409"><a href="#Resolver-409"><span class="linenos">409</span></a> <span class="n">table_name</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">quoted</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">)</span> <span class="k">else</span> <span class="kc">None</span> -</span><span id="Resolver-410"><a href="#Resolver-410"><span class="linenos">410</span></a> <span class="p">)</span> -</span><span id="Resolver-411"><a href="#Resolver-411"><span class="linenos">411</span></a> -</span><span id="Resolver-412"><a href="#Resolver-412"><span class="linenos">412</span></a> <span class="nd">@property</span> -</span><span id="Resolver-413"><a href="#Resolver-413"><span class="linenos">413</span></a> <span class="k">def</span> <span class="nf">all_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> -</span><span id="Resolver-414"><a href="#Resolver-414"><span class="linenos">414</span></a><span class="w"> </span><span class="sd">"""All available columns of all sources in this scope"""</span> -</span><span id="Resolver-415"><a href="#Resolver-415"><span class="linenos">415</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> -</span><span id="Resolver-416"><a href="#Resolver-416"><span class="linenos">416</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="p">{</span> -</span><span id="Resolver-417"><a href="#Resolver-417"><span class="linenos">417</span></a> <span class="n">column</span> <span class="k">for</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">values</span><span class="p">()</span> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span> -</span><span id="Resolver-418"><a href="#Resolver-418"><span class="linenos">418</span></a> <span class="p">}</span> -</span><span id="Resolver-419"><a href="#Resolver-419"><span class="linenos">419</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> -</span><span id="Resolver-420"><a href="#Resolver-420"><span class="linenos">420</span></a> -</span><span id="Resolver-421"><a href="#Resolver-421"><span class="linenos">421</span></a> <span class="k">def</span> <span class="nf">get_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">only_visible</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> -</span><span id="Resolver-422"><a href="#Resolver-422"><span class="linenos">422</span></a><span class="w"> </span><span class="sd">"""Resolve the source columns for a given source `name`"""</span> -</span><span id="Resolver-423"><a href="#Resolver-423"><span class="linenos">423</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> -</span><span id="Resolver-424"><a href="#Resolver-424"><span class="linenos">424</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="Resolver-425"><a href="#Resolver-425"><span class="linenos">425</span></a> -</span><span id="Resolver-426"><a href="#Resolver-426"><span class="linenos">426</span></a> <span class="n">source</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> -</span><span id="Resolver-427"><a href="#Resolver-427"><span class="linenos">427</span></a> -</span><span id="Resolver-428"><a href="#Resolver-428"><span class="linenos">428</span></a> <span class="c1"># If referencing a table, return the columns from the schema</span> -</span><span id="Resolver-429"><a href="#Resolver-429"><span class="linenos">429</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> -</span><span id="Resolver-430"><a href="#Resolver-430"><span class="linenos">430</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">column_names</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">only_visible</span><span class="p">)</span> -</span><span id="Resolver-431"><a href="#Resolver-431"><span class="linenos">431</span></a> -</span><span id="Resolver-432"><a href="#Resolver-432"><span class="linenos">432</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">):</span> -</span><span id="Resolver-433"><a href="#Resolver-433"><span class="linenos">433</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="Resolver-383"><a href="#Resolver-383"><span class="linenos">383</span></a><span class="k">class</span> <span class="nc">Resolver</span><span class="p">:</span> +</span><span id="Resolver-384"><a href="#Resolver-384"><span class="linenos">384</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="Resolver-385"><a href="#Resolver-385"><span class="linenos">385</span></a><span class="sd"> Helper for resolving columns.</span> +</span><span id="Resolver-386"><a href="#Resolver-386"><span class="linenos">386</span></a> +</span><span id="Resolver-387"><a href="#Resolver-387"><span class="linenos">387</span></a><span class="sd"> This is a class so we can lazily load some things and easily share them across functions.</span> +</span><span id="Resolver-388"><a href="#Resolver-388"><span class="linenos">388</span></a><span class="sd"> """</span> +</span><span id="Resolver-389"><a href="#Resolver-389"><span class="linenos">389</span></a> +</span><span id="Resolver-390"><a href="#Resolver-390"><span class="linenos">390</span></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">):</span> +</span><span id="Resolver-391"><a href="#Resolver-391"><span class="linenos">391</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span> <span class="o">=</span> <span class="n">scope</span> +</span><span id="Resolver-392"><a href="#Resolver-392"><span class="linenos">392</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span> +</span><span id="Resolver-393"><a href="#Resolver-393"><span class="linenos">393</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="Resolver-394"><a href="#Resolver-394"><span class="linenos">394</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="Resolver-395"><a href="#Resolver-395"><span class="linenos">395</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="Resolver-396"><a href="#Resolver-396"><span class="linenos">396</span></a> +</span><span id="Resolver-397"><a href="#Resolver-397"><span class="linenos">397</span></a> <span class="k">def</span> <span class="nf">get_table</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">column_name</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">]:</span> +</span><span id="Resolver-398"><a href="#Resolver-398"><span class="linenos">398</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="Resolver-399"><a href="#Resolver-399"><span class="linenos">399</span></a><span class="sd"> Get the table for a column name.</span> +</span><span id="Resolver-400"><a href="#Resolver-400"><span class="linenos">400</span></a> +</span><span id="Resolver-401"><a href="#Resolver-401"><span class="linenos">401</span></a><span class="sd"> Args:</span> +</span><span id="Resolver-402"><a href="#Resolver-402"><span class="linenos">402</span></a><span class="sd"> column_name: The column name to find the table for.</span> +</span><span id="Resolver-403"><a href="#Resolver-403"><span class="linenos">403</span></a><span class="sd"> Returns:</span> +</span><span id="Resolver-404"><a href="#Resolver-404"><span class="linenos">404</span></a><span class="sd"> The table name if it can be found/inferred.</span> +</span><span id="Resolver-405"><a href="#Resolver-405"><span class="linenos">405</span></a><span class="sd"> """</span> +</span><span id="Resolver-406"><a href="#Resolver-406"><span class="linenos">406</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> +</span><span id="Resolver-407"><a href="#Resolver-407"><span class="linenos">407</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_unambiguous_columns</span><span class="p">(</span> +</span><span id="Resolver-408"><a href="#Resolver-408"><span class="linenos">408</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span> +</span><span id="Resolver-409"><a href="#Resolver-409"><span class="linenos">409</span></a> <span class="p">)</span> +</span><span id="Resolver-410"><a href="#Resolver-410"><span class="linenos">410</span></a> +</span><span id="Resolver-411"><a href="#Resolver-411"><span class="linenos">411</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column_name</span><span class="p">)</span> +</span><span id="Resolver-412"><a href="#Resolver-412"><span class="linenos">412</span></a> +</span><span id="Resolver-413"><a href="#Resolver-413"><span class="linenos">413</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_name</span><span class="p">:</span> +</span><span id="Resolver-414"><a href="#Resolver-414"><span class="linenos">414</span></a> <span class="n">sources_without_schema</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span> +</span><span id="Resolver-415"><a href="#Resolver-415"><span class="linenos">415</span></a> <span class="n">source</span> +</span><span id="Resolver-416"><a href="#Resolver-416"><span class="linenos">416</span></a> <span class="k">for</span> <span class="n">source</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> +</span><span id="Resolver-417"><a href="#Resolver-417"><span class="linenos">417</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">columns</span> <span class="ow">or</span> <span class="s2">"*"</span> <span class="ow">in</span> <span class="n">columns</span> +</span><span id="Resolver-418"><a href="#Resolver-418"><span class="linenos">418</span></a> <span class="p">)</span> +</span><span id="Resolver-419"><a href="#Resolver-419"><span class="linenos">419</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">sources_without_schema</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> +</span><span id="Resolver-420"><a href="#Resolver-420"><span class="linenos">420</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="n">sources_without_schema</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> +</span><span id="Resolver-421"><a href="#Resolver-421"><span class="linenos">421</span></a> +</span><span id="Resolver-422"><a href="#Resolver-422"><span class="linenos">422</span></a> <span class="k">if</span> <span class="n">table_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">:</span> +</span><span id="Resolver-423"><a href="#Resolver-423"><span class="linenos">423</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> +</span><span id="Resolver-424"><a href="#Resolver-424"><span class="linenos">424</span></a> +</span><span id="Resolver-425"><a href="#Resolver-425"><span class="linenos">425</span></a> <span class="n">node</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> +</span><span id="Resolver-426"><a href="#Resolver-426"><span class="linenos">426</span></a> +</span><span id="Resolver-427"><a href="#Resolver-427"><span class="linenos">427</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">):</span> +</span><span id="Resolver-428"><a href="#Resolver-428"><span class="linenos">428</span></a> <span class="k">while</span> <span class="n">node</span> <span class="ow">and</span> <span class="n">node</span><span class="o">.</span><span class="n">alias</span> <span class="o">!=</span> <span class="n">table_name</span><span class="p">:</span> +</span><span id="Resolver-429"><a href="#Resolver-429"><span class="linenos">429</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> +</span><span id="Resolver-430"><a href="#Resolver-430"><span class="linenos">430</span></a> +</span><span id="Resolver-431"><a href="#Resolver-431"><span class="linenos">431</span></a> <span class="n">node_alias</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> +</span><span id="Resolver-432"><a href="#Resolver-432"><span class="linenos">432</span></a> <span class="k">if</span> <span class="n">node_alias</span><span class="p">:</span> +</span><span id="Resolver-433"><a href="#Resolver-433"><span class="linenos">433</span></a> <span class="k">return</span> <span class="n">node_alias</span><span class="o">.</span><span class="n">this</span> </span><span id="Resolver-434"><a href="#Resolver-434"><span class="linenos">434</span></a> -</span><span id="Resolver-435"><a href="#Resolver-435"><span class="linenos">435</span></a> <span class="c1"># Otherwise, if referencing another scope, return that scope's named selects</span> -</span><span id="Resolver-436"><a href="#Resolver-436"><span class="linenos">436</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">named_selects</span> -</span><span id="Resolver-437"><a href="#Resolver-437"><span class="linenos">437</span></a> -</span><span id="Resolver-438"><a href="#Resolver-438"><span class="linenos">438</span></a> <span class="k">def</span> <span class="nf">_get_all_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> -</span><span id="Resolver-439"><a href="#Resolver-439"><span class="linenos">439</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> -</span><span id="Resolver-440"><a href="#Resolver-440"><span class="linenos">440</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="p">{</span> -</span><span id="Resolver-441"><a href="#Resolver-441"><span class="linenos">441</span></a> <span class="n">k</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">k</span><span class="p">)</span> -</span><span id="Resolver-442"><a href="#Resolver-442"><span class="linenos">442</span></a> <span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">lateral_sources</span><span class="p">)</span> -</span><span id="Resolver-443"><a href="#Resolver-443"><span class="linenos">443</span></a> <span class="p">}</span> -</span><span id="Resolver-444"><a href="#Resolver-444"><span class="linenos">444</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> -</span><span id="Resolver-445"><a href="#Resolver-445"><span class="linenos">445</span></a> -</span><span id="Resolver-446"><a href="#Resolver-446"><span class="linenos">446</span></a> <span class="k">def</span> <span class="nf">_get_unambiguous_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">source_columns</span><span class="p">):</span> -</span><span id="Resolver-447"><a href="#Resolver-447"><span class="linenos">447</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="Resolver-448"><a href="#Resolver-448"><span class="linenos">448</span></a><span class="sd"> Find all the unambiguous columns in sources.</span> -</span><span id="Resolver-449"><a href="#Resolver-449"><span class="linenos">449</span></a> -</span><span id="Resolver-450"><a href="#Resolver-450"><span class="linenos">450</span></a><span class="sd"> Args:</span> -</span><span id="Resolver-451"><a href="#Resolver-451"><span class="linenos">451</span></a><span class="sd"> source_columns (dict): Mapping of names to source columns</span> -</span><span id="Resolver-452"><a href="#Resolver-452"><span class="linenos">452</span></a><span class="sd"> Returns:</span> -</span><span id="Resolver-453"><a href="#Resolver-453"><span class="linenos">453</span></a><span class="sd"> dict: Mapping of column name to source name</span> -</span><span id="Resolver-454"><a href="#Resolver-454"><span class="linenos">454</span></a><span class="sd"> """</span> -</span><span id="Resolver-455"><a href="#Resolver-455"><span class="linenos">455</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source_columns</span><span class="p">:</span> -</span><span id="Resolver-456"><a href="#Resolver-456"><span class="linenos">456</span></a> <span class="k">return</span> <span class="p">{}</span> -</span><span id="Resolver-457"><a href="#Resolver-457"><span class="linenos">457</span></a> -</span><span id="Resolver-458"><a href="#Resolver-458"><span class="linenos">458</span></a> <span class="n">source_columns</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">source_columns</span><span class="o">.</span><span class="n">items</span><span class="p">())</span> -</span><span id="Resolver-459"><a href="#Resolver-459"><span class="linenos">459</span></a> -</span><span id="Resolver-460"><a href="#Resolver-460"><span class="linenos">460</span></a> <span class="n">first_table</span><span class="p">,</span> <span class="n">first_columns</span> <span class="o">=</span> <span class="n">source_columns</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> -</span><span id="Resolver-461"><a href="#Resolver-461"><span class="linenos">461</span></a> <span class="n">unambiguous_columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">col</span><span class="p">:</span> <span class="n">first_table</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">first_columns</span><span class="p">)}</span> -</span><span id="Resolver-462"><a href="#Resolver-462"><span class="linenos">462</span></a> <span class="n">all_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">unambiguous_columns</span><span class="p">)</span> -</span><span id="Resolver-463"><a href="#Resolver-463"><span class="linenos">463</span></a> -</span><span id="Resolver-464"><a href="#Resolver-464"><span class="linenos">464</span></a> <span class="k">for</span> <span class="n">table</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="n">source_columns</span><span class="p">[</span><span class="mi">1</span><span class="p">:]:</span> -</span><span id="Resolver-465"><a href="#Resolver-465"><span class="linenos">465</span></a> <span class="n">unique</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span> -</span><span id="Resolver-466"><a href="#Resolver-466"><span class="linenos">466</span></a> <span class="n">ambiguous</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">all_columns</span><span class="p">)</span><span class="o">.</span><span class="n">intersection</span><span class="p">(</span><span class="n">unique</span><span class="p">)</span> -</span><span id="Resolver-467"><a href="#Resolver-467"><span class="linenos">467</span></a> <span class="n">all_columns</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span> -</span><span id="Resolver-468"><a href="#Resolver-468"><span class="linenos">468</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">ambiguous</span><span class="p">:</span> -</span><span id="Resolver-469"><a href="#Resolver-469"><span class="linenos">469</span></a> <span class="n">unambiguous_columns</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> -</span><span id="Resolver-470"><a href="#Resolver-470"><span class="linenos">470</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">unique</span><span class="o">.</span><span class="n">difference</span><span class="p">(</span><span class="n">ambiguous</span><span class="p">):</span> -</span><span id="Resolver-471"><a href="#Resolver-471"><span class="linenos">471</span></a> <span class="n">unambiguous_columns</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">table</span> +</span><span id="Resolver-435"><a href="#Resolver-435"><span class="linenos">435</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span> +</span><span id="Resolver-436"><a href="#Resolver-436"><span class="linenos">436</span></a> <span class="n">table_name</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">quoted</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">)</span> <span class="k">else</span> <span class="kc">None</span> +</span><span id="Resolver-437"><a href="#Resolver-437"><span class="linenos">437</span></a> <span class="p">)</span> +</span><span id="Resolver-438"><a href="#Resolver-438"><span class="linenos">438</span></a> +</span><span id="Resolver-439"><a href="#Resolver-439"><span class="linenos">439</span></a> <span class="nd">@property</span> +</span><span id="Resolver-440"><a href="#Resolver-440"><span class="linenos">440</span></a> <span class="k">def</span> <span class="nf">all_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> +</span><span id="Resolver-441"><a href="#Resolver-441"><span class="linenos">441</span></a><span class="w"> </span><span class="sd">"""All available columns of all sources in this scope"""</span> +</span><span id="Resolver-442"><a href="#Resolver-442"><span class="linenos">442</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> +</span><span id="Resolver-443"><a href="#Resolver-443"><span class="linenos">443</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="p">{</span> +</span><span id="Resolver-444"><a href="#Resolver-444"><span class="linenos">444</span></a> <span class="n">column</span> <span class="k">for</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">values</span><span class="p">()</span> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span> +</span><span id="Resolver-445"><a href="#Resolver-445"><span class="linenos">445</span></a> <span class="p">}</span> +</span><span id="Resolver-446"><a href="#Resolver-446"><span class="linenos">446</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> +</span><span id="Resolver-447"><a href="#Resolver-447"><span class="linenos">447</span></a> +</span><span id="Resolver-448"><a href="#Resolver-448"><span class="linenos">448</span></a> <span class="k">def</span> <span class="nf">get_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">only_visible</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> +</span><span id="Resolver-449"><a href="#Resolver-449"><span class="linenos">449</span></a><span class="w"> </span><span class="sd">"""Resolve the source columns for a given source `name`"""</span> +</span><span id="Resolver-450"><a href="#Resolver-450"><span class="linenos">450</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> +</span><span id="Resolver-451"><a href="#Resolver-451"><span class="linenos">451</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="Resolver-452"><a href="#Resolver-452"><span class="linenos">452</span></a> +</span><span id="Resolver-453"><a href="#Resolver-453"><span class="linenos">453</span></a> <span class="n">source</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> +</span><span id="Resolver-454"><a href="#Resolver-454"><span class="linenos">454</span></a> +</span><span id="Resolver-455"><a href="#Resolver-455"><span class="linenos">455</span></a> <span class="c1"># If referencing a table, return the columns from the schema</span> +</span><span id="Resolver-456"><a href="#Resolver-456"><span class="linenos">456</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> +</span><span id="Resolver-457"><a href="#Resolver-457"><span class="linenos">457</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">column_names</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">only_visible</span><span class="p">)</span> +</span><span id="Resolver-458"><a href="#Resolver-458"><span class="linenos">458</span></a> +</span><span id="Resolver-459"><a href="#Resolver-459"><span class="linenos">459</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">):</span> +</span><span id="Resolver-460"><a href="#Resolver-460"><span class="linenos">460</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span> +</span><span id="Resolver-461"><a href="#Resolver-461"><span class="linenos">461</span></a> +</span><span id="Resolver-462"><a href="#Resolver-462"><span class="linenos">462</span></a> <span class="c1"># Otherwise, if referencing another scope, return that scope's named selects</span> +</span><span id="Resolver-463"><a href="#Resolver-463"><span class="linenos">463</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">named_selects</span> +</span><span id="Resolver-464"><a href="#Resolver-464"><span class="linenos">464</span></a> +</span><span id="Resolver-465"><a href="#Resolver-465"><span class="linenos">465</span></a> <span class="k">def</span> <span class="nf">_get_all_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> +</span><span id="Resolver-466"><a href="#Resolver-466"><span class="linenos">466</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> +</span><span id="Resolver-467"><a href="#Resolver-467"><span class="linenos">467</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="p">{</span> +</span><span id="Resolver-468"><a href="#Resolver-468"><span class="linenos">468</span></a> <span class="n">k</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">k</span><span class="p">)</span> +</span><span id="Resolver-469"><a href="#Resolver-469"><span class="linenos">469</span></a> <span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">lateral_sources</span><span class="p">)</span> +</span><span id="Resolver-470"><a href="#Resolver-470"><span class="linenos">470</span></a> <span class="p">}</span> +</span><span id="Resolver-471"><a href="#Resolver-471"><span class="linenos">471</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> </span><span id="Resolver-472"><a href="#Resolver-472"><span class="linenos">472</span></a> -</span><span id="Resolver-473"><a href="#Resolver-473"><span class="linenos">473</span></a> <span class="k">return</span> <span class="n">unambiguous_columns</span> -</span><span id="Resolver-474"><a href="#Resolver-474"><span class="linenos">474</span></a> -</span><span id="Resolver-475"><a href="#Resolver-475"><span class="linenos">475</span></a> <span class="nd">@staticmethod</span> -</span><span id="Resolver-476"><a href="#Resolver-476"><span class="linenos">476</span></a> <span class="k">def</span> <span class="nf">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">):</span> -</span><span id="Resolver-477"><a href="#Resolver-477"><span class="linenos">477</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="Resolver-478"><a href="#Resolver-478"><span class="linenos">478</span></a><span class="sd"> Find the unique columns in a list of columns.</span> -</span><span id="Resolver-479"><a href="#Resolver-479"><span class="linenos">479</span></a> -</span><span id="Resolver-480"><a href="#Resolver-480"><span class="linenos">480</span></a><span class="sd"> Example:</span> -</span><span id="Resolver-481"><a href="#Resolver-481"><span class="linenos">481</span></a><span class="sd"> >>> sorted(Resolver._find_unique_columns(["a", "b", "b", "c"]))</span> -</span><span id="Resolver-482"><a href="#Resolver-482"><span class="linenos">482</span></a><span class="sd"> ['a', 'c']</span> -</span><span id="Resolver-483"><a href="#Resolver-483"><span class="linenos">483</span></a> -</span><span id="Resolver-484"><a href="#Resolver-484"><span class="linenos">484</span></a><span class="sd"> This is necessary because duplicate column names are ambiguous.</span> -</span><span id="Resolver-485"><a href="#Resolver-485"><span class="linenos">485</span></a><span class="sd"> """</span> -</span><span id="Resolver-486"><a href="#Resolver-486"><span class="linenos">486</span></a> <span class="n">counts</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="Resolver-487"><a href="#Resolver-487"><span class="linenos">487</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> -</span><span id="Resolver-488"><a href="#Resolver-488"><span class="linenos">488</span></a> <span class="n">counts</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">counts</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span> -</span><span id="Resolver-489"><a href="#Resolver-489"><span class="linenos">489</span></a> <span class="k">return</span> <span class="p">{</span><span class="n">column</span> <span class="k">for</span> <span class="n">column</span><span class="p">,</span> <span class="n">count</span> <span class="ow">in</span> <span class="n">counts</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> <span class="k">if</span> <span class="n">count</span> <span class="o">==</span> <span class="mi">1</span><span class="p">}</span> +</span><span id="Resolver-473"><a href="#Resolver-473"><span class="linenos">473</span></a> <span class="k">def</span> <span class="nf">_get_unambiguous_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">source_columns</span><span class="p">):</span> +</span><span id="Resolver-474"><a href="#Resolver-474"><span class="linenos">474</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="Resolver-475"><a href="#Resolver-475"><span class="linenos">475</span></a><span class="sd"> Find all the unambiguous columns in sources.</span> +</span><span id="Resolver-476"><a href="#Resolver-476"><span class="linenos">476</span></a> +</span><span id="Resolver-477"><a href="#Resolver-477"><span class="linenos">477</span></a><span class="sd"> Args:</span> +</span><span id="Resolver-478"><a href="#Resolver-478"><span class="linenos">478</span></a><span class="sd"> source_columns (dict): Mapping of names to source columns</span> +</span><span id="Resolver-479"><a href="#Resolver-479"><span class="linenos">479</span></a><span class="sd"> Returns:</span> +</span><span id="Resolver-480"><a href="#Resolver-480"><span class="linenos">480</span></a><span class="sd"> dict: Mapping of column name to source name</span> +</span><span id="Resolver-481"><a href="#Resolver-481"><span class="linenos">481</span></a><span class="sd"> """</span> +</span><span id="Resolver-482"><a href="#Resolver-482"><span class="linenos">482</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source_columns</span><span class="p">:</span> +</span><span id="Resolver-483"><a href="#Resolver-483"><span class="linenos">483</span></a> <span class="k">return</span> <span class="p">{}</span> +</span><span id="Resolver-484"><a href="#Resolver-484"><span class="linenos">484</span></a> +</span><span id="Resolver-485"><a href="#Resolver-485"><span class="linenos">485</span></a> <span class="n">source_columns</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">source_columns</span><span class="o">.</span><span class="n">items</span><span class="p">())</span> +</span><span id="Resolver-486"><a href="#Resolver-486"><span class="linenos">486</span></a> +</span><span id="Resolver-487"><a href="#Resolver-487"><span class="linenos">487</span></a> <span class="n">first_table</span><span class="p">,</span> <span class="n">first_columns</span> <span class="o">=</span> <span class="n">source_columns</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> +</span><span id="Resolver-488"><a href="#Resolver-488"><span class="linenos">488</span></a> <span class="n">unambiguous_columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">col</span><span class="p">:</span> <span class="n">first_table</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">first_columns</span><span class="p">)}</span> +</span><span id="Resolver-489"><a href="#Resolver-489"><span class="linenos">489</span></a> <span class="n">all_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">unambiguous_columns</span><span class="p">)</span> +</span><span id="Resolver-490"><a href="#Resolver-490"><span class="linenos">490</span></a> +</span><span id="Resolver-491"><a href="#Resolver-491"><span class="linenos">491</span></a> <span class="k">for</span> <span class="n">table</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="n">source_columns</span><span class="p">[</span><span class="mi">1</span><span class="p">:]:</span> +</span><span id="Resolver-492"><a href="#Resolver-492"><span class="linenos">492</span></a> <span class="n">unique</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span> +</span><span id="Resolver-493"><a href="#Resolver-493"><span class="linenos">493</span></a> <span class="n">ambiguous</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">all_columns</span><span class="p">)</span><span class="o">.</span><span class="n">intersection</span><span class="p">(</span><span class="n">unique</span><span class="p">)</span> +</span><span id="Resolver-494"><a href="#Resolver-494"><span class="linenos">494</span></a> <span class="n">all_columns</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span> +</span><span id="Resolver-495"><a href="#Resolver-495"><span class="linenos">495</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">ambiguous</span><span class="p">:</span> +</span><span id="Resolver-496"><a href="#Resolver-496"><span class="linenos">496</span></a> <span class="n">unambiguous_columns</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> +</span><span id="Resolver-497"><a href="#Resolver-497"><span class="linenos">497</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">unique</span><span class="o">.</span><span class="n">difference</span><span class="p">(</span><span class="n">ambiguous</span><span class="p">):</span> +</span><span id="Resolver-498"><a href="#Resolver-498"><span class="linenos">498</span></a> <span class="n">unambiguous_columns</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">table</span> +</span><span id="Resolver-499"><a href="#Resolver-499"><span class="linenos">499</span></a> +</span><span id="Resolver-500"><a href="#Resolver-500"><span class="linenos">500</span></a> <span class="k">return</span> <span class="n">unambiguous_columns</span> +</span><span id="Resolver-501"><a href="#Resolver-501"><span class="linenos">501</span></a> +</span><span id="Resolver-502"><a href="#Resolver-502"><span class="linenos">502</span></a> <span class="nd">@staticmethod</span> +</span><span id="Resolver-503"><a href="#Resolver-503"><span class="linenos">503</span></a> <span class="k">def</span> <span class="nf">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">):</span> +</span><span id="Resolver-504"><a href="#Resolver-504"><span class="linenos">504</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="Resolver-505"><a href="#Resolver-505"><span class="linenos">505</span></a><span class="sd"> Find the unique columns in a list of columns.</span> +</span><span id="Resolver-506"><a href="#Resolver-506"><span class="linenos">506</span></a> +</span><span id="Resolver-507"><a href="#Resolver-507"><span class="linenos">507</span></a><span class="sd"> Example:</span> +</span><span id="Resolver-508"><a href="#Resolver-508"><span class="linenos">508</span></a><span class="sd"> >>> sorted(Resolver._find_unique_columns(["a", "b", "b", "c"]))</span> +</span><span id="Resolver-509"><a href="#Resolver-509"><span class="linenos">509</span></a><span class="sd"> ['a', 'c']</span> +</span><span id="Resolver-510"><a href="#Resolver-510"><span class="linenos">510</span></a> +</span><span id="Resolver-511"><a href="#Resolver-511"><span class="linenos">511</span></a><span class="sd"> This is necessary because duplicate column names are ambiguous.</span> +</span><span id="Resolver-512"><a href="#Resolver-512"><span class="linenos">512</span></a><span class="sd"> """</span> +</span><span id="Resolver-513"><a href="#Resolver-513"><span class="linenos">513</span></a> <span class="n">counts</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="Resolver-514"><a href="#Resolver-514"><span class="linenos">514</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> +</span><span id="Resolver-515"><a href="#Resolver-515"><span class="linenos">515</span></a> <span class="n">counts</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">counts</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span> +</span><span id="Resolver-516"><a href="#Resolver-516"><span class="linenos">516</span></a> <span class="k">return</span> <span class="p">{</span><span class="n">column</span> <span class="k">for</span> <span class="n">column</span><span class="p">,</span> <span class="n">count</span> <span class="ow">in</span> <span class="n">counts</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> <span class="k">if</span> <span class="n">count</span> <span class="o">==</span> <span class="mi">1</span><span class="p">}</span> </span></pre></div> @@ -842,12 +870,12 @@ </div> <a class="headerlink" href="#Resolver.__init__"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="Resolver.__init__-363"><a href="#Resolver.__init__-363"><span class="linenos">363</span></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">):</span> -</span><span id="Resolver.__init__-364"><a href="#Resolver.__init__-364"><span class="linenos">364</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span> <span class="o">=</span> <span class="n">scope</span> -</span><span id="Resolver.__init__-365"><a href="#Resolver.__init__-365"><span class="linenos">365</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span> -</span><span id="Resolver.__init__-366"><a href="#Resolver.__init__-366"><span class="linenos">366</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="Resolver.__init__-367"><a href="#Resolver.__init__-367"><span class="linenos">367</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="Resolver.__init__-368"><a href="#Resolver.__init__-368"><span class="linenos">368</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="kc">None</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="Resolver.__init__-390"><a href="#Resolver.__init__-390"><span class="linenos">390</span></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">):</span> +</span><span id="Resolver.__init__-391"><a href="#Resolver.__init__-391"><span class="linenos">391</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span> <span class="o">=</span> <span class="n">scope</span> +</span><span id="Resolver.__init__-392"><a href="#Resolver.__init__-392"><span class="linenos">392</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span> +</span><span id="Resolver.__init__-393"><a href="#Resolver.__init__-393"><span class="linenos">393</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="Resolver.__init__-394"><a href="#Resolver.__init__-394"><span class="linenos">394</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="Resolver.__init__-395"><a href="#Resolver.__init__-395"><span class="linenos">395</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="kc">None</span> </span></pre></div> @@ -865,47 +893,47 @@ </div> <a class="headerlink" href="#Resolver.get_table"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="Resolver.get_table-370"><a href="#Resolver.get_table-370"><span class="linenos">370</span></a> <span class="k">def</span> <span class="nf">get_table</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">column_name</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">]:</span> -</span><span id="Resolver.get_table-371"><a href="#Resolver.get_table-371"><span class="linenos">371</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="Resolver.get_table-372"><a href="#Resolver.get_table-372"><span class="linenos">372</span></a><span class="sd"> Get the table for a column name.</span> -</span><span id="Resolver.get_table-373"><a href="#Resolver.get_table-373"><span class="linenos">373</span></a> -</span><span id="Resolver.get_table-374"><a href="#Resolver.get_table-374"><span class="linenos">374</span></a><span class="sd"> Args:</span> -</span><span id="Resolver.get_table-375"><a href="#Resolver.get_table-375"><span class="linenos">375</span></a><span class="sd"> column_name: The column name to find the table for.</span> -</span><span id="Resolver.get_table-376"><a href="#Resolver.get_table-376"><span class="linenos">376</span></a><span class="sd"> Returns:</span> -</span><span id="Resolver.get_table-377"><a href="#Resolver.get_table-377"><span class="linenos">377</span></a><span class="sd"> The table name if it can be found/inferred.</span> -</span><span id="Resolver.get_table-378"><a href="#Resolver.get_table-378"><span class="linenos">378</span></a><span class="sd"> """</span> -</span><span id="Resolver.get_table-379"><a href="#Resolver.get_table-379"><span class="linenos">379</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> -</span><span id="Resolver.get_table-380"><a href="#Resolver.get_table-380"><span class="linenos">380</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_unambiguous_columns</span><span class="p">(</span> -</span><span id="Resolver.get_table-381"><a href="#Resolver.get_table-381"><span class="linenos">381</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span> -</span><span id="Resolver.get_table-382"><a href="#Resolver.get_table-382"><span class="linenos">382</span></a> <span class="p">)</span> -</span><span id="Resolver.get_table-383"><a href="#Resolver.get_table-383"><span class="linenos">383</span></a> -</span><span id="Resolver.get_table-384"><a href="#Resolver.get_table-384"><span class="linenos">384</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column_name</span><span class="p">)</span> -</span><span id="Resolver.get_table-385"><a href="#Resolver.get_table-385"><span class="linenos">385</span></a> -</span><span id="Resolver.get_table-386"><a href="#Resolver.get_table-386"><span class="linenos">386</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_name</span><span class="p">:</span> -</span><span id="Resolver.get_table-387"><a href="#Resolver.get_table-387"><span class="linenos">387</span></a> <span class="n">sources_without_schema</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span> -</span><span id="Resolver.get_table-388"><a href="#Resolver.get_table-388"><span class="linenos">388</span></a> <span class="n">source</span> -</span><span id="Resolver.get_table-389"><a href="#Resolver.get_table-389"><span class="linenos">389</span></a> <span class="k">for</span> <span class="n">source</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> -</span><span id="Resolver.get_table-390"><a href="#Resolver.get_table-390"><span class="linenos">390</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">columns</span> <span class="ow">or</span> <span class="s2">"*"</span> <span class="ow">in</span> <span class="n">columns</span> -</span><span id="Resolver.get_table-391"><a href="#Resolver.get_table-391"><span class="linenos">391</span></a> <span class="p">)</span> -</span><span id="Resolver.get_table-392"><a href="#Resolver.get_table-392"><span class="linenos">392</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">sources_without_schema</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> -</span><span id="Resolver.get_table-393"><a href="#Resolver.get_table-393"><span class="linenos">393</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="n">sources_without_schema</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> -</span><span id="Resolver.get_table-394"><a href="#Resolver.get_table-394"><span class="linenos">394</span></a> -</span><span id="Resolver.get_table-395"><a href="#Resolver.get_table-395"><span class="linenos">395</span></a> <span class="k">if</span> <span class="n">table_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">:</span> -</span><span id="Resolver.get_table-396"><a href="#Resolver.get_table-396"><span class="linenos">396</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> -</span><span id="Resolver.get_table-397"><a href="#Resolver.get_table-397"><span class="linenos">397</span></a> -</span><span id="Resolver.get_table-398"><a href="#Resolver.get_table-398"><span class="linenos">398</span></a> <span class="n">node</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> -</span><span id="Resolver.get_table-399"><a href="#Resolver.get_table-399"><span class="linenos">399</span></a> -</span><span id="Resolver.get_table-400"><a href="#Resolver.get_table-400"><span class="linenos">400</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">):</span> -</span><span id="Resolver.get_table-401"><a href="#Resolver.get_table-401"><span class="linenos">401</span></a> <span class="k">while</span> <span class="n">node</span> <span class="ow">and</span> <span class="n">node</span><span class="o">.</span><span class="n">alias</span> <span class="o">!=</span> <span class="n">table_name</span><span class="p">:</span> -</span><span id="Resolver.get_table-402"><a href="#Resolver.get_table-402"><span class="linenos">402</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> -</span><span id="Resolver.get_table-403"><a href="#Resolver.get_table-403"><span class="linenos">403</span></a> -</span><span id="Resolver.get_table-404"><a href="#Resolver.get_table-404"><span class="linenos">404</span></a> <span class="n">node_alias</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> -</span><span id="Resolver.get_table-405"><a href="#Resolver.get_table-405"><span class="linenos">405</span></a> <span class="k">if</span> <span class="n">node_alias</span><span class="p">:</span> -</span><span id="Resolver.get_table-406"><a href="#Resolver.get_table-406"><span class="linenos">406</span></a> <span class="k">return</span> <span class="n">node_alias</span><span class="o">.</span><span class="n">this</span> -</span><span id="Resolver.get_table-407"><a href="#Resolver.get_table-407"><span class="linenos">407</span></a> -</span><span id="Resolver.get_table-408"><a href="#Resolver.get_table-408"><span class="linenos">408</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span> -</span><span id="Resolver.get_table-409"><a href="#Resolver.get_table-409"><span class="linenos">409</span></a> <span class="n">table_name</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">quoted</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">)</span> <span class="k">else</span> <span class="kc">None</span> -</span><span id="Resolver.get_table-410"><a href="#Resolver.get_table-410"><span class="linenos">410</span></a> <span class="p">)</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="Resolver.get_table-397"><a href="#Resolver.get_table-397"><span class="linenos">397</span></a> <span class="k">def</span> <span class="nf">get_table</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">column_name</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">]:</span> +</span><span id="Resolver.get_table-398"><a href="#Resolver.get_table-398"><span class="linenos">398</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="Resolver.get_table-399"><a href="#Resolver.get_table-399"><span class="linenos">399</span></a><span class="sd"> Get the table for a column name.</span> +</span><span id="Resolver.get_table-400"><a href="#Resolver.get_table-400"><span class="linenos">400</span></a> +</span><span id="Resolver.get_table-401"><a href="#Resolver.get_table-401"><span class="linenos">401</span></a><span class="sd"> Args:</span> +</span><span id="Resolver.get_table-402"><a href="#Resolver.get_table-402"><span class="linenos">402</span></a><span class="sd"> column_name: The column name to find the table for.</span> +</span><span id="Resolver.get_table-403"><a href="#Resolver.get_table-403"><span class="linenos">403</span></a><span class="sd"> Returns:</span> +</span><span id="Resolver.get_table-404"><a href="#Resolver.get_table-404"><span class="linenos">404</span></a><span class="sd"> The table name if it can be found/inferred.</span> +</span><span id="Resolver.get_table-405"><a href="#Resolver.get_table-405"><span class="linenos">405</span></a><span class="sd"> """</span> +</span><span id="Resolver.get_table-406"><a href="#Resolver.get_table-406"><span class="linenos">406</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> +</span><span id="Resolver.get_table-407"><a href="#Resolver.get_table-407"><span class="linenos">407</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_unambiguous_columns</span><span class="p">(</span> +</span><span id="Resolver.get_table-408"><a href="#Resolver.get_table-408"><span class="linenos">408</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span> +</span><span id="Resolver.get_table-409"><a href="#Resolver.get_table-409"><span class="linenos">409</span></a> <span class="p">)</span> +</span><span id="Resolver.get_table-410"><a href="#Resolver.get_table-410"><span class="linenos">410</span></a> +</span><span id="Resolver.get_table-411"><a href="#Resolver.get_table-411"><span class="linenos">411</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column_name</span><span class="p">)</span> +</span><span id="Resolver.get_table-412"><a href="#Resolver.get_table-412"><span class="linenos">412</span></a> +</span><span id="Resolver.get_table-413"><a href="#Resolver.get_table-413"><span class="linenos">413</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_name</span><span class="p">:</span> +</span><span id="Resolver.get_table-414"><a href="#Resolver.get_table-414"><span class="linenos">414</span></a> <span class="n">sources_without_schema</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span> +</span><span id="Resolver.get_table-415"><a href="#Resolver.get_table-415"><span class="linenos">415</span></a> <span class="n">source</span> +</span><span id="Resolver.get_table-416"><a href="#Resolver.get_table-416"><span class="linenos">416</span></a> <span class="k">for</span> <span class="n">source</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> +</span><span id="Resolver.get_table-417"><a href="#Resolver.get_table-417"><span class="linenos">417</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">columns</span> <span class="ow">or</span> <span class="s2">"*"</span> <span class="ow">in</span> <span class="n">columns</span> +</span><span id="Resolver.get_table-418"><a href="#Resolver.get_table-418"><span class="linenos">418</span></a> <span class="p">)</span> +</span><span id="Resolver.get_table-419"><a href="#Resolver.get_table-419"><span class="linenos">419</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">sources_without_schema</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> +</span><span id="Resolver.get_table-420"><a href="#Resolver.get_table-420"><span class="linenos">420</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="n">sources_without_schema</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> +</span><span id="Resolver.get_table-421"><a href="#Resolver.get_table-421"><span class="linenos">421</span></a> +</span><span id="Resolver.get_table-422"><a href="#Resolver.get_table-422"><span class="linenos">422</span></a> <span class="k">if</span> <span class="n">table_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">:</span> +</span><span id="Resolver.get_table-423"><a href="#Resolver.get_table-423"><span class="linenos">423</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> +</span><span id="Resolver.get_table-424"><a href="#Resolver.get_table-424"><span class="linenos">424</span></a> +</span><span id="Resolver.get_table-425"><a href="#Resolver.get_table-425"><span class="linenos">425</span></a> <span class="n">node</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> +</span><span id="Resolver.get_table-426"><a href="#Resolver.get_table-426"><span class="linenos">426</span></a> +</span><span id="Resolver.get_table-427"><a href="#Resolver.get_table-427"><span class="linenos">427</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">):</span> +</span><span id="Resolver.get_table-428"><a href="#Resolver.get_table-428"><span class="linenos">428</span></a> <span class="k">while</span> <span class="n">node</span> <span class="ow">and</span> <span class="n">node</span><span class="o">.</span><span class="n">alias</span> <span class="o">!=</span> <span class="n">table_name</span><span class="p">:</span> +</span><span id="Resolver.get_table-429"><a href="#Resolver.get_table-429"><span class="linenos">429</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> +</span><span id="Resolver.get_table-430"><a href="#Resolver.get_table-430"><span class="linenos">430</span></a> +</span><span id="Resolver.get_table-431"><a href="#Resolver.get_table-431"><span class="linenos">431</span></a> <span class="n">node_alias</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> +</span><span id="Resolver.get_table-432"><a href="#Resolver.get_table-432"><span class="linenos">432</span></a> <span class="k">if</span> <span class="n">node_alias</span><span class="p">:</span> +</span><span id="Resolver.get_table-433"><a href="#Resolver.get_table-433"><span class="linenos">433</span></a> <span class="k">return</span> <span class="n">node_alias</span><span class="o">.</span><span class="n">this</span> +</span><span id="Resolver.get_table-434"><a href="#Resolver.get_table-434"><span class="linenos">434</span></a> +</span><span id="Resolver.get_table-435"><a href="#Resolver.get_table-435"><span class="linenos">435</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span> +</span><span id="Resolver.get_table-436"><a href="#Resolver.get_table-436"><span class="linenos">436</span></a> <span class="n">table_name</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">quoted</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">)</span> <span class="k">else</span> <span class="kc">None</span> +</span><span id="Resolver.get_table-437"><a href="#Resolver.get_table-437"><span class="linenos">437</span></a> <span class="p">)</span> </span></pre></div> @@ -950,22 +978,22 @@ </div> <a class="headerlink" href="#Resolver.get_source_columns"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="Resolver.get_source_columns-421"><a href="#Resolver.get_source_columns-421"><span class="linenos">421</span></a> <span class="k">def</span> <span class="nf">get_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">only_visible</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> -</span><span id="Resolver.get_source_columns-422"><a href="#Resolver.get_source_columns-422"><span class="linenos">422</span></a><span class="w"> </span><span class="sd">"""Resolve the source columns for a given source `name`"""</span> -</span><span id="Resolver.get_source_columns-423"><a href="#Resolver.get_source_columns-423"><span class="linenos">423</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> -</span><span id="Resolver.get_source_columns-424"><a href="#Resolver.get_source_columns-424"><span class="linenos">424</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="Resolver.get_source_columns-425"><a href="#Resolver.get_source_columns-425"><span class="linenos">425</span></a> -</span><span id="Resolver.get_source_columns-426"><a href="#Resolver.get_source_columns-426"><span class="linenos">426</span></a> <span class="n">source</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> -</span><span id="Resolver.get_source_columns-427"><a href="#Resolver.get_source_columns-427"><span class="linenos">427</span></a> -</span><span id="Resolver.get_source_columns-428"><a href="#Resolver.get_source_columns-428"><span class="linenos">428</span></a> <span class="c1"># If referencing a table, return the columns from the schema</span> -</span><span id="Resolver.get_source_columns-429"><a href="#Resolver.get_source_columns-429"><span class="linenos">429</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> -</span><span id="Resolver.get_source_columns-430"><a href="#Resolver.get_source_columns-430"><span class="linenos">430</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">column_names</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">only_visible</span><span class="p">)</span> -</span><span id="Resolver.get_source_columns-431"><a href="#Resolver.get_source_columns-431"><span class="linenos">431</span></a> -</span><span id="Resolver.get_source_columns-432"><a href="#Resolver.get_source_columns-432"><span class="linenos">432</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">):</span> -</span><span id="Resolver.get_source_columns-433"><a href="#Resolver.get_source_columns-433"><span class="linenos">433</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span> -</span><span id="Resolver.get_source_columns-434"><a href="#Resolver.get_source_columns-434"><span class="linenos">434</span></a> -</span><span id="Resolver.get_source_columns-435"><a href="#Resolver.get_source_columns-435"><span class="linenos">435</span></a> <span class="c1"># Otherwise, if referencing another scope, return that scope's named selects</span> -</span><span id="Resolver.get_source_columns-436"><a href="#Resolver.get_source_columns-436"><span class="linenos">436</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">named_selects</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="Resolver.get_source_columns-448"><a href="#Resolver.get_source_columns-448"><span class="linenos">448</span></a> <span class="k">def</span> <span class="nf">get_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">only_visible</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> +</span><span id="Resolver.get_source_columns-449"><a href="#Resolver.get_source_columns-449"><span class="linenos">449</span></a><span class="w"> </span><span class="sd">"""Resolve the source columns for a given source `name`"""</span> +</span><span id="Resolver.get_source_columns-450"><a href="#Resolver.get_source_columns-450"><span class="linenos">450</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> +</span><span id="Resolver.get_source_columns-451"><a href="#Resolver.get_source_columns-451"><span class="linenos">451</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="Resolver.get_source_columns-452"><a href="#Resolver.get_source_columns-452"><span class="linenos">452</span></a> +</span><span id="Resolver.get_source_columns-453"><a href="#Resolver.get_source_columns-453"><span class="linenos">453</span></a> <span class="n">source</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> +</span><span id="Resolver.get_source_columns-454"><a href="#Resolver.get_source_columns-454"><span class="linenos">454</span></a> +</span><span id="Resolver.get_source_columns-455"><a href="#Resolver.get_source_columns-455"><span class="linenos">455</span></a> <span class="c1"># If referencing a table, return the columns from the schema</span> +</span><span id="Resolver.get_source_columns-456"><a href="#Resolver.get_source_columns-456"><span class="linenos">456</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> +</span><span id="Resolver.get_source_columns-457"><a href="#Resolver.get_source_columns-457"><span class="linenos">457</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">column_names</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">only_visible</span><span class="p">)</span> +</span><span id="Resolver.get_source_columns-458"><a href="#Resolver.get_source_columns-458"><span class="linenos">458</span></a> +</span><span id="Resolver.get_source_columns-459"><a href="#Resolver.get_source_columns-459"><span class="linenos">459</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">):</span> +</span><span id="Resolver.get_source_columns-460"><a href="#Resolver.get_source_columns-460"><span class="linenos">460</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span> +</span><span id="Resolver.get_source_columns-461"><a href="#Resolver.get_source_columns-461"><span class="linenos">461</span></a> +</span><span id="Resolver.get_source_columns-462"><a href="#Resolver.get_source_columns-462"><span class="linenos">462</span></a> <span class="c1"># Otherwise, if referencing another scope, return that scope's named selects</span> +</span><span id="Resolver.get_source_columns-463"><a href="#Resolver.get_source_columns-463"><span class="linenos">463</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">named_selects</span> </span></pre></div> diff --git a/docs/sqlglot/optimizer/qualify_tables.html b/docs/sqlglot/optimizer/qualify_tables.html index f0bbf01..085a10d 100644 --- a/docs/sqlglot/optimizer/qualify_tables.html +++ b/docs/sqlglot/optimizer/qualify_tables.html @@ -3,7 +3,7 @@ <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> - <meta name="generator" content="pdoc 13.0.0"/> + <meta name="generator" content="pdoc 13.0.1"/> <title>sqlglot.optimizer.qualify_tables API documentation</title> <style>/*! * Bootstrap Reboot v5.0.0 (https://getbootstrap.com/) * Copyright 2011-2021 The Bootstrap Authors * Copyright 2011-2021 Twitter, Inc. * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE) * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md) */*,::after,::before{box-sizing:border-box}@media (prefers-reduced-motion:no-preference){:root{scroll-behavior:smooth}}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","Liberation Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";font-size:1rem;font-weight:400;line-height:1.5;color:#212529;background-color:#fff;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}hr{margin:1rem 0;color:inherit;background-color:currentColor;border:0;opacity:.25}hr:not([size]){height:1px}h1,h2,h3,h4,h5,h6{margin-top:0;margin-bottom:.5rem;font-weight:500;line-height:1.2}h1{font-size:calc(1.375rem + 1.5vw)}@media (min-width:1200px){h1{font-size:2.5rem}}h2{font-size:calc(1.325rem + .9vw)}@media (min-width:1200px){h2{font-size:2rem}}h3{font-size:calc(1.3rem + .6vw)}@media (min-width:1200px){h3{font-size:1.75rem}}h4{font-size:calc(1.275rem + .3vw)}@media (min-width:1200px){h4{font-size:1.5rem}}h5{font-size:1.25rem}h6{font-size:1rem}p{margin-top:0;margin-bottom:1rem}abbr[data-bs-original-title],abbr[title]{-webkit-text-decoration:underline dotted;text-decoration:underline dotted;cursor:help;-webkit-text-decoration-skip-ink:none;text-decoration-skip-ink:none}address{margin-bottom:1rem;font-style:normal;line-height:inherit}ol,ul{padding-left:2rem}dl,ol,ul{margin-top:0;margin-bottom:1rem}ol ol,ol ul,ul ol,ul ul{margin-bottom:0}dt{font-weight:700}dd{margin-bottom:.5rem;margin-left:0}blockquote{margin:0 0 1rem}b,strong{font-weight:bolder}small{font-size:.875em}mark{padding:.2em;background-color:#fcf8e3}sub,sup{position:relative;font-size:.75em;line-height:0;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}a{color:#0d6efd;text-decoration:underline}a:hover{color:#0a58ca}a:not([href]):not([class]),a:not([href]):not([class]):hover{color:inherit;text-decoration:none}code,kbd,pre,samp{font-family:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;font-size:1em;direction:ltr;unicode-bidi:bidi-override}pre{display:block;margin-top:0;margin-bottom:1rem;overflow:auto;font-size:.875em}pre code{font-size:inherit;color:inherit;word-break:normal}code{font-size:.875em;color:#d63384;word-wrap:break-word}a>code{color:inherit}kbd{padding:.2rem .4rem;font-size:.875em;color:#fff;background-color:#212529;border-radius:.2rem}kbd kbd{padding:0;font-size:1em;font-weight:700}figure{margin:0 0 1rem}img,svg{vertical-align:middle}table{caption-side:bottom;border-collapse:collapse}caption{padding-top:.5rem;padding-bottom:.5rem;color:#6c757d;text-align:left}th{text-align:inherit;text-align:-webkit-match-parent}tbody,td,tfoot,th,thead,tr{border-color:inherit;border-style:solid;border-width:0}label{display:inline-block}button{border-radius:0}button:focus:not(:focus-visible){outline:0}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,select{text-transform:none}[role=button]{cursor:pointer}select{word-wrap:normal}select:disabled{opacity:1}[list]::-webkit-calendar-picker-indicator{display:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]:not(:disabled),[type=reset]:not(:disabled),[type=submit]:not(:disabled),button:not(:disabled){cursor:pointer}::-moz-focus-inner{padding:0;border-style:none}textarea{resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{float:left;width:100%;padding:0;margin-bottom:.5rem;font-size:calc(1.275rem + .3vw);line-height:inherit}@media (min-width:1200px){legend{font-size:1.5rem}}legend+*{clear:left}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-fields-wrapper,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-text,::-webkit-datetime-edit-year-field{padding:0}::-webkit-inner-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:textfield}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-color-swatch-wrapper{padding:0}::file-selector-button{font:inherit}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}iframe{border:0}summary{display:list-item;cursor:pointer}progress{vertical-align:baseline}[hidden]{display:none!important}</style> @@ -28,8 +28,8 @@ - <h2>API Documentation</h2> - <ul class="memberlist"> + <h2>API Documentation</h2> + <ul class="memberlist"> <li> <a class="function" href="#qualify_tables">qualify_tables</a> </li> diff --git a/docs/sqlglot/optimizer/scope.html b/docs/sqlglot/optimizer/scope.html index a1bc729..05fcece 100644 --- a/docs/sqlglot/optimizer/scope.html +++ b/docs/sqlglot/optimizer/scope.html @@ -3,7 +3,7 @@ <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> - <meta name="generator" content="pdoc 13.0.0"/> + <meta name="generator" content="pdoc 13.0.1"/> <title>sqlglot.optimizer.scope API documentation</title> <style>/*! * Bootstrap Reboot v5.0.0 (https://getbootstrap.com/) * Copyright 2011-2021 The Bootstrap Authors * Copyright 2011-2021 Twitter, Inc. * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE) * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md) */*,::after,::before{box-sizing:border-box}@media (prefers-reduced-motion:no-preference){:root{scroll-behavior:smooth}}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","Liberation Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";font-size:1rem;font-weight:400;line-height:1.5;color:#212529;background-color:#fff;-webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent}hr{margin:1rem 0;color:inherit;background-color:currentColor;border:0;opacity:.25}hr:not([size]){height:1px}h1,h2,h3,h4,h5,h6{margin-top:0;margin-bottom:.5rem;font-weight:500;line-height:1.2}h1{font-size:calc(1.375rem + 1.5vw)}@media (min-width:1200px){h1{font-size:2.5rem}}h2{font-size:calc(1.325rem + .9vw)}@media (min-width:1200px){h2{font-size:2rem}}h3{font-size:calc(1.3rem + .6vw)}@media (min-width:1200px){h3{font-size:1.75rem}}h4{font-size:calc(1.275rem + .3vw)}@media (min-width:1200px){h4{font-size:1.5rem}}h5{font-size:1.25rem}h6{font-size:1rem}p{margin-top:0;margin-bottom:1rem}abbr[data-bs-original-title],abbr[title]{-webkit-text-decoration:underline dotted;text-decoration:underline dotted;cursor:help;-webkit-text-decoration-skip-ink:none;text-decoration-skip-ink:none}address{margin-bottom:1rem;font-style:normal;line-height:inherit}ol,ul{padding-left:2rem}dl,ol,ul{margin-top:0;margin-bottom:1rem}ol ol,ol ul,ul ol,ul ul{margin-bottom:0}dt{font-weight:700}dd{margin-bottom:.5rem;margin-left:0}blockquote{margin:0 0 1rem}b,strong{font-weight:bolder}small{font-size:.875em}mark{padding:.2em;background-color:#fcf8e3}sub,sup{position:relative;font-size:.75em;line-height:0;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}a{color:#0d6efd;text-decoration:underline}a:hover{color:#0a58ca}a:not([href]):not([class]),a:not([href]):not([class]):hover{color:inherit;text-decoration:none}code,kbd,pre,samp{font-family:SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;font-size:1em;direction:ltr;unicode-bidi:bidi-override}pre{display:block;margin-top:0;margin-bottom:1rem;overflow:auto;font-size:.875em}pre code{font-size:inherit;color:inherit;word-break:normal}code{font-size:.875em;color:#d63384;word-wrap:break-word}a>code{color:inherit}kbd{padding:.2rem .4rem;font-size:.875em;color:#fff;background-color:#212529;border-radius:.2rem}kbd kbd{padding:0;font-size:1em;font-weight:700}figure{margin:0 0 1rem}img,svg{vertical-align:middle}table{caption-side:bottom;border-collapse:collapse}caption{padding-top:.5rem;padding-bottom:.5rem;color:#6c757d;text-align:left}th{text-align:inherit;text-align:-webkit-match-parent}tbody,td,tfoot,th,thead,tr{border-color:inherit;border-style:solid;border-width:0}label{display:inline-block}button{border-radius:0}button:focus:not(:focus-visible){outline:0}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,select{text-transform:none}[role=button]{cursor:pointer}select{word-wrap:normal}select:disabled{opacity:1}[list]::-webkit-calendar-picker-indicator{display:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]:not(:disabled),[type=reset]:not(:disabled),[type=submit]:not(:disabled),button:not(:disabled){cursor:pointer}::-moz-focus-inner{padding:0;border-style:none}textarea{resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{float:left;width:100%;padding:0;margin-bottom:.5rem;font-size:calc(1.275rem + .3vw);line-height:inherit}@media (min-width:1200px){legend{font-size:1.5rem}}legend+*{clear:left}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-fields-wrapper,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-text,::-webkit-datetime-edit-year-field{padding:0}::-webkit-inner-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:textfield}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-color-swatch-wrapper{padding:0}::file-selector-button{font:inherit}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}iframe{border:0}summary{display:list-item;cursor:pointer}progress{vertical-align:baseline}[hidden]{display:none!important}</style> @@ -28,8 +28,8 @@ - <h2>API Documentation</h2> - <ul class="memberlist"> + <h2>API Documentation</h2> + <ul class="memberlist"> <li> <a class="class" href="#ScopeType">ScopeType</a> <ul class="memberlist"> @@ -350,7 +350,7 @@ </span><span id="L-160"><a href="#L-160"><span class="linenos">160</span></a><span class="sd"> Yields:</span> </span><span id="L-161"><a href="#L-161"><span class="linenos">161</span></a><span class="sd"> exp.Expression: nodes</span> </span><span id="L-162"><a href="#L-162"><span class="linenos">162</span></a><span class="sd"> """</span> -</span><span id="L-163"><a href="#L-163"><span class="linenos">163</span></a> <span class="k">for</span> <span class="n">expression</span><span class="p">,</span> <span class="n">_</span><span class="p">,</span> <span class="n">_</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">walk</span><span class="p">(</span><span class="n">bfs</span><span class="o">=</span><span class="n">bfs</span><span class="p">):</span> +</span><span id="L-163"><a href="#L-163"><span class="linenos">163</span></a> <span class="k">for</span> <span class="n">expression</span><span class="p">,</span> <span class="o">*</span><span class="n">_</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">walk</span><span class="p">(</span><span class="n">bfs</span><span class="o">=</span><span class="n">bfs</span><span class="p">):</span> </span><span id="L-164"><a href="#L-164"><span class="linenos">164</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">expression_types</span><span class="p">):</span> </span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a> <span class="k">yield</span> <span class="n">expression</span> </span><span id="L-166"><a href="#L-166"><span class="linenos">166</span></a> @@ -1133,7 +1133,7 @@ </span><span id="Scope-161"><a href="#Scope-161"><span class="linenos">161</span></a><span class="sd"> Yields:</span> </span><span id="Scope-162"><a href="#Scope-162"><span class="linenos">162</span></a><span class="sd"> exp.Expression: nodes</span> </span><span id="Scope-163"><a href="#Scope-163"><span class="linenos">163</span></a><span class="sd"> """</span> -</span><span id="Scope-164"><a href="#Scope-164"><span class="linenos">164</span></a> <span class="k">for</span> <span class="n">expression</span><span class="p">,</span> <span class="n">_</span><span class="p">,</span> <span class="n">_</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">walk</span><span class="p">(</span><span class="n">bfs</span><span class="o">=</span><span class="n">bfs</span><span class="p">):</span> +</span><span id="Scope-164"><a href="#Scope-164"><span class="linenos">164</span></a> <span class="k">for</span> <span class="n">expression</span><span class="p">,</span> <span class="o">*</span><span class="n">_</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">walk</span><span class="p">(</span><span class="n">bfs</span><span class="o">=</span><span class="n">bfs</span><span class="p">):</span> </span><span id="Scope-165"><a href="#Scope-165"><span class="linenos">165</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">expression_types</span><span class="p">):</span> </span><span id="Scope-166"><a href="#Scope-166"><span class="linenos">166</span></a> <span class="k">yield</span> <span class="n">expression</span> </span><span id="Scope-167"><a href="#Scope-167"><span class="linenos">167</span></a> @@ -1660,7 +1660,7 @@ a list of the left and right child scopes.</li> </span><span id="Scope.find_all-161"><a href="#Scope.find_all-161"><span class="linenos">161</span></a><span class="sd"> Yields:</span> </span><span id="Scope.find_all-162"><a href="#Scope.find_all-162"><span class="linenos">162</span></a><span class="sd"> exp.Expression: nodes</span> </span><span id="Scope.find_all-163"><a href="#Scope.find_all-163"><span class="linenos">163</span></a><span class="sd"> """</span> -</span><span id="Scope.find_all-164"><a href="#Scope.find_all-164"><span class="linenos">164</span></a> <span class="k">for</span> <span class="n">expression</span><span class="p">,</span> <span class="n">_</span><span class="p">,</span> <span class="n">_</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">walk</span><span class="p">(</span><span class="n">bfs</span><span class="o">=</span><span class="n">bfs</span><span class="p">):</span> +</span><span id="Scope.find_all-164"><a href="#Scope.find_all-164"><span class="linenos">164</span></a> <span class="k">for</span> <span class="n">expression</span><span class="p">,</span> <span class="o">*</span><span class="n">_</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">walk</span><span class="p">(</span><span class="n">bfs</span><span class="o">=</span><span class="n">bfs</span><span class="p">):</span> </span><span id="Scope.find_all-165"><a href="#Scope.find_all-165"><span class="linenos">165</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">expression_types</span><span class="p">):</span> </span><span id="Scope.find_all-166"><a href="#Scope.find_all-166"><span class="linenos">166</span></a> <span class="k">yield</span> <span class="n">expression</span> </span></pre></div> diff --git a/docs/sqlglot/optimizer/simplify.html b/docs/sqlglot/optimizer/simplify.html index b6e0a38..a282a52 100644 --- a/docs/sqlglot/optimizer/simplify.html +++ b/docs/sqlglot/optimizer/simplify.html @@ -3,7 +3,7 @@ <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> - <meta name="generator" 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1rem}img,svg{vertical-align:middle}table{caption-side:bottom;border-collapse:collapse}caption{padding-top:.5rem;padding-bottom:.5rem;color:#6c757d;text-align:left}th{text-align:inherit;text-align:-webkit-match-parent}tbody,td,tfoot,th,thead,tr{border-color:inherit;border-style:solid;border-width:0}label{display:inline-block}button{border-radius:0}button:focus:not(:focus-visible){outline:0}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,select{text-transform:none}[role=button]{cursor:pointer}select{word-wrap:normal}select:disabled{opacity:1}[list]::-webkit-calendar-picker-indicator{display:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]:not(:disabled),[type=reset]:not(:disabled),[type=submit]:not(:disabled),button:not(:disabled){cursor:pointer}::-moz-focus-inner{padding:0;border-style:none}textarea{resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{float:left;width:100%;padding:0;margin-bottom:.5rem;font-size:calc(1.275rem + .3vw);line-height:inherit}@media (min-width:1200px){legend{font-size:1.5rem}}legend+*{clear:left}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-fields-wrapper,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-text,::-webkit-datetime-edit-year-field{padding:0}::-webkit-inner-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:textfield}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-color-swatch-wrapper{padding:0}::file-selector-button{font:inherit}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}iframe{border:0}summary{display:list-item;cursor:pointer}progress{vertical-align:baseline}[hidden]{display:none!important}</style> @@ -28,8 +28,8 @@ - <h2>API Documentation</h2> - <ul class="memberlist"> + <h2>API Documentation</h2> + <ul class="memberlist"> <li> <a class="function" href="#simplify">simplify</a> </li> @@ -70,6 +70,12 @@ <a class="function" href="#is_complement">is_complement</a> </li> <li> + <a class="function" href="#is_false">is_false</a> + </li> + <li> + <a class="function" href="#is_null">is_null</a> + </li> + <li> <a class="function" href="#eval_boolean">eval_boolean</a> </li> <li> @@ -114,488 +120,502 @@ </span><span id="L-5"><a href="#L-5"><span class="linenos"> 5</span></a><span class="kn">from</span> <span class="nn">decimal</span> <span class="kn">import</span> <span class="n">Decimal</span> </span><span id="L-6"><a href="#L-6"><span class="linenos"> 6</span></a> </span><span id="L-7"><a href="#L-7"><span class="linenos"> 7</span></a><span class="kn">from</span> <span class="nn">sqlglot</span> <span class="kn">import</span> <span class="n">exp</span> -</span><span id="L-8"><a href="#L-8"><span class="linenos"> 8</span></a><span class="kn">from</span> <span class="nn">sqlglot.expressions</span> <span class="kn">import</span> <span class="n">FALSE</span><span class="p">,</span> <span class="n">NULL</span><span class="p">,</span> <span class="n">TRUE</span> -</span><span id="L-9"><a href="#L-9"><span class="linenos"> 9</span></a><span class="kn">from</span> <span class="nn">sqlglot.generator</span> <span class="kn">import</span> <span class="n">Generator</span> -</span><span id="L-10"><a href="#L-10"><span class="linenos"> 10</span></a><span class="kn">from</span> <span class="nn">sqlglot.helper</span> <span class="kn">import</span> <span class="n">first</span><span class="p">,</span> <span class="n">while_changing</span> -</span><span id="L-11"><a href="#L-11"><span class="linenos"> 11</span></a> -</span><span id="L-12"><a href="#L-12"><span class="linenos"> 12</span></a><span class="n">GENERATOR</span> <span class="o">=</span> <span class="n">Generator</span><span class="p">(</span><span class="n">normalize</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">identify</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> +</span><span id="L-8"><a href="#L-8"><span class="linenos"> 8</span></a><span class="kn">from</span> <span class="nn">sqlglot.generator</span> <span class="kn">import</span> <span class="n">Generator</span> +</span><span id="L-9"><a href="#L-9"><span class="linenos"> 9</span></a><span class="kn">from</span> <span class="nn">sqlglot.helper</span> <span class="kn">import</span> <span class="n">first</span><span class="p">,</span> <span class="n">while_changing</span> +</span><span id="L-10"><a href="#L-10"><span class="linenos"> 10</span></a> +</span><span id="L-11"><a href="#L-11"><span class="linenos"> 11</span></a><span class="n">GENERATOR</span> <span class="o">=</span> <span class="n">Generator</span><span class="p">(</span><span class="n">normalize</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">identify</span><span class="o">=</span><span class="s2">"safe"</span><span class="p">)</span> +</span><span id="L-12"><a href="#L-12"><span class="linenos"> 12</span></a> </span><span id="L-13"><a href="#L-13"><span class="linenos"> 13</span></a> -</span><span id="L-14"><a href="#L-14"><span class="linenos"> 14</span></a> -</span><span id="L-15"><a href="#L-15"><span class="linenos"> 15</span></a><span class="k">def</span> <span class="nf">simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-16"><a href="#L-16"><span class="linenos"> 16</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-17"><a href="#L-17"><span class="linenos"> 17</span></a><span class="sd"> Rewrite sqlglot AST to simplify expressions.</span> -</span><span id="L-18"><a href="#L-18"><span class="linenos"> 18</span></a> -</span><span id="L-19"><a href="#L-19"><span class="linenos"> 19</span></a><span class="sd"> Example:</span> -</span><span id="L-20"><a href="#L-20"><span class="linenos"> 20</span></a><span class="sd"> >>> import sqlglot</span> -</span><span id="L-21"><a href="#L-21"><span class="linenos"> 21</span></a><span class="sd"> >>> expression = sqlglot.parse_one("TRUE AND TRUE")</span> -</span><span id="L-22"><a href="#L-22"><span class="linenos"> 22</span></a><span class="sd"> >>> simplify(expression).sql()</span> -</span><span id="L-23"><a href="#L-23"><span class="linenos"> 23</span></a><span class="sd"> 'TRUE'</span> -</span><span id="L-24"><a href="#L-24"><span class="linenos"> 24</span></a> -</span><span id="L-25"><a href="#L-25"><span class="linenos"> 25</span></a><span class="sd"> Args:</span> -</span><span id="L-26"><a href="#L-26"><span class="linenos"> 26</span></a><span class="sd"> expression (sqlglot.Expression): expression to simplify</span> -</span><span id="L-27"><a href="#L-27"><span class="linenos"> 27</span></a><span class="sd"> Returns:</span> -</span><span id="L-28"><a href="#L-28"><span class="linenos"> 28</span></a><span class="sd"> sqlglot.Expression: simplified expression</span> -</span><span id="L-29"><a href="#L-29"><span class="linenos"> 29</span></a><span class="sd"> """</span> -</span><span id="L-30"><a href="#L-30"><span class="linenos"> 30</span></a> -</span><span id="L-31"><a href="#L-31"><span class="linenos"> 31</span></a> <span class="k">def</span> <span class="nf">_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> -</span><span id="L-32"><a href="#L-32"><span class="linenos"> 32</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">expression</span> -</span><span id="L-33"><a href="#L-33"><span class="linenos"> 33</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">rewrite_between</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="L-34"><a href="#L-34"><span class="linenos"> 34</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">uniq_sort</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="L-35"><a href="#L-35"><span class="linenos"> 35</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">absorb_and_eliminate</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="L-36"><a href="#L-36"><span class="linenos"> 36</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">replace_children</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="k">lambda</span> <span class="n">e</span><span class="p">:</span> <span class="n">_simplify</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="kc">False</span><span class="p">))</span> -</span><span id="L-37"><a href="#L-37"><span class="linenos"> 37</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_not</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="L-38"><a href="#L-38"><span class="linenos"> 38</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">flatten</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="L-39"><a href="#L-39"><span class="linenos"> 39</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_connectors</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="L-40"><a href="#L-40"><span class="linenos"> 40</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">remove_compliments</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="L-41"><a href="#L-41"><span class="linenos"> 41</span></a> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">parent</span> -</span><span id="L-42"><a href="#L-42"><span class="linenos"> 42</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_literals</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="L-43"><a href="#L-43"><span class="linenos"> 43</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_parens</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="L-44"><a href="#L-44"><span class="linenos"> 44</span></a> <span class="k">if</span> <span class="n">root</span><span class="p">:</span> -</span><span id="L-45"><a href="#L-45"><span class="linenos"> 45</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="L-46"><a href="#L-46"><span class="linenos"> 46</span></a> <span class="k">return</span> <span class="n">node</span> -</span><span id="L-47"><a href="#L-47"><span class="linenos"> 47</span></a> -</span><span id="L-48"><a href="#L-48"><span class="linenos"> 48</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">while_changing</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">_simplify</span><span class="p">)</span> -</span><span id="L-49"><a href="#L-49"><span class="linenos"> 49</span></a> <span class="n">remove_where_true</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-50"><a href="#L-50"><span class="linenos"> 50</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-51"><a href="#L-51"><span class="linenos"> 51</span></a> +</span><span id="L-14"><a href="#L-14"><span class="linenos"> 14</span></a><span class="k">def</span> <span class="nf">simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-15"><a href="#L-15"><span class="linenos"> 15</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-16"><a href="#L-16"><span class="linenos"> 16</span></a><span class="sd"> Rewrite sqlglot AST to simplify expressions.</span> +</span><span id="L-17"><a href="#L-17"><span class="linenos"> 17</span></a> +</span><span id="L-18"><a href="#L-18"><span class="linenos"> 18</span></a><span class="sd"> Example:</span> +</span><span id="L-19"><a href="#L-19"><span class="linenos"> 19</span></a><span class="sd"> >>> import sqlglot</span> +</span><span id="L-20"><a href="#L-20"><span class="linenos"> 20</span></a><span class="sd"> >>> expression = sqlglot.parse_one("TRUE AND TRUE")</span> +</span><span id="L-21"><a href="#L-21"><span class="linenos"> 21</span></a><span class="sd"> >>> simplify(expression).sql()</span> +</span><span id="L-22"><a href="#L-22"><span class="linenos"> 22</span></a><span class="sd"> 'TRUE'</span> +</span><span id="L-23"><a href="#L-23"><span class="linenos"> 23</span></a> +</span><span id="L-24"><a href="#L-24"><span class="linenos"> 24</span></a><span class="sd"> Args:</span> +</span><span id="L-25"><a href="#L-25"><span class="linenos"> 25</span></a><span class="sd"> expression (sqlglot.Expression): expression to simplify</span> +</span><span id="L-26"><a href="#L-26"><span class="linenos"> 26</span></a><span class="sd"> Returns:</span> +</span><span id="L-27"><a href="#L-27"><span class="linenos"> 27</span></a><span class="sd"> sqlglot.Expression: simplified expression</span> +</span><span id="L-28"><a href="#L-28"><span class="linenos"> 28</span></a><span class="sd"> """</span> +</span><span id="L-29"><a href="#L-29"><span class="linenos"> 29</span></a> +</span><span id="L-30"><a href="#L-30"><span class="linenos"> 30</span></a> <span class="n">cache</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="L-31"><a href="#L-31"><span class="linenos"> 31</span></a> +</span><span id="L-32"><a href="#L-32"><span class="linenos"> 32</span></a> <span class="k">def</span> <span class="nf">_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> +</span><span id="L-33"><a href="#L-33"><span class="linenos"> 33</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">expression</span> +</span><span id="L-34"><a href="#L-34"><span class="linenos"> 34</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">rewrite_between</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="L-35"><a href="#L-35"><span class="linenos"> 35</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">uniq_sort</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">cache</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span> +</span><span id="L-36"><a href="#L-36"><span class="linenos"> 36</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">absorb_and_eliminate</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span> +</span><span id="L-37"><a href="#L-37"><span class="linenos"> 37</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">replace_children</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="k">lambda</span> <span class="n">e</span><span class="p">:</span> <span class="n">_simplify</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="kc">False</span><span class="p">))</span> +</span><span id="L-38"><a href="#L-38"><span class="linenos"> 38</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_not</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="L-39"><a href="#L-39"><span class="linenos"> 39</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">flatten</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="L-40"><a href="#L-40"><span class="linenos"> 40</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_connectors</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span> +</span><span id="L-41"><a href="#L-41"><span class="linenos"> 41</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">remove_compliments</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span> +</span><span id="L-42"><a href="#L-42"><span class="linenos"> 42</span></a> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">parent</span> +</span><span id="L-43"><a href="#L-43"><span class="linenos"> 43</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_literals</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span> +</span><span id="L-44"><a href="#L-44"><span class="linenos"> 44</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_parens</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="L-45"><a href="#L-45"><span class="linenos"> 45</span></a> <span class="k">if</span> <span class="n">root</span><span class="p">:</span> +</span><span id="L-46"><a href="#L-46"><span class="linenos"> 46</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="L-47"><a href="#L-47"><span class="linenos"> 47</span></a> <span class="k">return</span> <span class="n">node</span> +</span><span id="L-48"><a href="#L-48"><span class="linenos"> 48</span></a> +</span><span id="L-49"><a href="#L-49"><span class="linenos"> 49</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">while_changing</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">_simplify</span><span class="p">)</span> +</span><span id="L-50"><a href="#L-50"><span class="linenos"> 50</span></a> <span class="n">remove_where_true</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="L-51"><a href="#L-51"><span class="linenos"> 51</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="L-52"><a href="#L-52"><span class="linenos"> 52</span></a> -</span><span id="L-53"><a href="#L-53"><span class="linenos"> 53</span></a><span class="k">def</span> <span class="nf">rewrite_between</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span> -</span><span id="L-54"><a href="#L-54"><span class="linenos"> 54</span></a><span class="w"> </span><span class="sd">"""Rewrite x between y and z to x >= y AND x <= z.</span> -</span><span id="L-55"><a href="#L-55"><span class="linenos"> 55</span></a> -</span><span id="L-56"><a href="#L-56"><span class="linenos"> 56</span></a><span class="sd"> This is done because comparison simplification is only done on lt/lte/gt/gte.</span> -</span><span id="L-57"><a href="#L-57"><span class="linenos"> 57</span></a><span class="sd"> """</span> -</span><span id="L-58"><a href="#L-58"><span class="linenos"> 58</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Between</span><span class="p">):</span> -</span><span id="L-59"><a href="#L-59"><span class="linenos"> 59</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span> -</span><span id="L-60"><a href="#L-60"><span class="linenos"> 60</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">expression</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"low"</span><span class="p">]),</span> -</span><span id="L-61"><a href="#L-61"><span class="linenos"> 61</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">expression</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"high"</span><span class="p">]),</span> -</span><span id="L-62"><a href="#L-62"><span class="linenos"> 62</span></a> <span class="p">)</span> -</span><span id="L-63"><a href="#L-63"><span class="linenos"> 63</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-64"><a href="#L-64"><span class="linenos"> 64</span></a> +</span><span id="L-53"><a href="#L-53"><span class="linenos"> 53</span></a> +</span><span id="L-54"><a href="#L-54"><span class="linenos"> 54</span></a><span class="k">def</span> <span class="nf">rewrite_between</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span> +</span><span id="L-55"><a href="#L-55"><span class="linenos"> 55</span></a><span class="w"> </span><span class="sd">"""Rewrite x between y and z to x >= y AND x <= z.</span> +</span><span id="L-56"><a href="#L-56"><span class="linenos"> 56</span></a> +</span><span id="L-57"><a href="#L-57"><span class="linenos"> 57</span></a><span class="sd"> This is done because comparison simplification is only done on lt/lte/gt/gte.</span> +</span><span id="L-58"><a href="#L-58"><span class="linenos"> 58</span></a><span class="sd"> """</span> +</span><span id="L-59"><a href="#L-59"><span class="linenos"> 59</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Between</span><span class="p">):</span> +</span><span id="L-60"><a href="#L-60"><span class="linenos"> 60</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span> +</span><span id="L-61"><a href="#L-61"><span class="linenos"> 61</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">expression</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"low"</span><span class="p">]),</span> +</span><span id="L-62"><a href="#L-62"><span class="linenos"> 62</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">expression</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"high"</span><span class="p">]),</span> +</span><span id="L-63"><a href="#L-63"><span class="linenos"> 63</span></a> <span class="p">)</span> +</span><span id="L-64"><a href="#L-64"><span class="linenos"> 64</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="L-65"><a href="#L-65"><span class="linenos"> 65</span></a> -</span><span id="L-66"><a href="#L-66"><span class="linenos"> 66</span></a><span class="k">def</span> <span class="nf">simplify_not</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-67"><a href="#L-67"><span class="linenos"> 67</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-68"><a href="#L-68"><span class="linenos"> 68</span></a><span class="sd"> Demorgan's Law</span> -</span><span id="L-69"><a href="#L-69"><span class="linenos"> 69</span></a><span class="sd"> NOT (x OR y) -> NOT x AND NOT y</span> -</span><span id="L-70"><a href="#L-70"><span class="linenos"> 70</span></a><span class="sd"> NOT (x AND y) -> NOT x OR NOT y</span> -</span><span id="L-71"><a href="#L-71"><span class="linenos"> 71</span></a><span class="sd"> """</span> -</span><span id="L-72"><a href="#L-72"><span class="linenos"> 72</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">):</span> -</span><span id="L-73"><a href="#L-73"><span class="linenos"> 73</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Null</span><span class="p">):</span> -</span><span id="L-74"><a href="#L-74"><span class="linenos"> 74</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> -</span><span id="L-75"><a href="#L-75"><span class="linenos"> 75</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Paren</span><span class="p">):</span> -</span><span id="L-76"><a href="#L-76"><span class="linenos"> 76</span></a> <span class="n">condition</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span> -</span><span id="L-77"><a href="#L-77"><span class="linenos"> 77</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">):</span> -</span><span id="L-78"><a href="#L-78"><span class="linenos"> 78</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">left</span><span class="p">),</span> <span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">right</span><span class="p">))</span> -</span><span id="L-79"><a href="#L-79"><span class="linenos"> 79</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">):</span> -</span><span id="L-80"><a href="#L-80"><span class="linenos"> 80</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">left</span><span class="p">),</span> <span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">right</span><span class="p">))</span> -</span><span id="L-81"><a href="#L-81"><span class="linenos"> 81</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Null</span><span class="p">):</span> -</span><span id="L-82"><a href="#L-82"><span class="linenos"> 82</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> -</span><span id="L-83"><a href="#L-83"><span class="linenos"> 83</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">):</span> -</span><span id="L-84"><a href="#L-84"><span class="linenos"> 84</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> -</span><span id="L-85"><a href="#L-85"><span class="linenos"> 85</span></a> <span class="k">if</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">FALSE</span><span class="p">:</span> -</span><span id="L-86"><a href="#L-86"><span class="linenos"> 86</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> -</span><span id="L-87"><a href="#L-87"><span class="linenos"> 87</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">):</span> -</span><span id="L-88"><a href="#L-88"><span class="linenos"> 88</span></a> <span class="c1"># double negation</span> -</span><span id="L-89"><a href="#L-89"><span class="linenos"> 89</span></a> <span class="c1"># NOT NOT x -> x</span> -</span><span id="L-90"><a href="#L-90"><span class="linenos"> 90</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">this</span> -</span><span id="L-91"><a href="#L-91"><span class="linenos"> 91</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-92"><a href="#L-92"><span class="linenos"> 92</span></a> +</span><span id="L-66"><a href="#L-66"><span class="linenos"> 66</span></a> +</span><span id="L-67"><a href="#L-67"><span class="linenos"> 67</span></a><span class="k">def</span> <span class="nf">simplify_not</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-68"><a href="#L-68"><span class="linenos"> 68</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-69"><a href="#L-69"><span class="linenos"> 69</span></a><span class="sd"> Demorgan's Law</span> +</span><span id="L-70"><a href="#L-70"><span class="linenos"> 70</span></a><span class="sd"> NOT (x OR y) -> NOT x AND NOT y</span> +</span><span id="L-71"><a href="#L-71"><span class="linenos"> 71</span></a><span class="sd"> NOT (x AND y) -> NOT x OR NOT y</span> +</span><span id="L-72"><a href="#L-72"><span class="linenos"> 72</span></a><span class="sd"> """</span> +</span><span id="L-73"><a href="#L-73"><span class="linenos"> 73</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">):</span> +</span><span id="L-74"><a href="#L-74"><span class="linenos"> 74</span></a> <span class="k">if</span> <span class="n">is_null</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">):</span> +</span><span id="L-75"><a href="#L-75"><span class="linenos"> 75</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> +</span><span id="L-76"><a href="#L-76"><span class="linenos"> 76</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Paren</span><span class="p">):</span> +</span><span id="L-77"><a href="#L-77"><span class="linenos"> 77</span></a> <span class="n">condition</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span> +</span><span id="L-78"><a href="#L-78"><span class="linenos"> 78</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">):</span> +</span><span id="L-79"><a href="#L-79"><span class="linenos"> 79</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">left</span><span class="p">),</span> <span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">right</span><span class="p">))</span> +</span><span id="L-80"><a href="#L-80"><span class="linenos"> 80</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">):</span> +</span><span id="L-81"><a href="#L-81"><span class="linenos"> 81</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">left</span><span class="p">),</span> <span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">right</span><span class="p">))</span> +</span><span id="L-82"><a href="#L-82"><span class="linenos"> 82</span></a> <span class="k">if</span> <span class="n">is_null</span><span class="p">(</span><span class="n">condition</span><span class="p">):</span> +</span><span id="L-83"><a href="#L-83"><span class="linenos"> 83</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> +</span><span id="L-84"><a href="#L-84"><span class="linenos"> 84</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">):</span> +</span><span id="L-85"><a href="#L-85"><span class="linenos"> 85</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> +</span><span id="L-86"><a href="#L-86"><span class="linenos"> 86</span></a> <span class="k">if</span> <span class="n">is_false</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">):</span> +</span><span id="L-87"><a href="#L-87"><span class="linenos"> 87</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> +</span><span id="L-88"><a href="#L-88"><span class="linenos"> 88</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">):</span> +</span><span id="L-89"><a href="#L-89"><span class="linenos"> 89</span></a> <span class="c1"># double negation</span> +</span><span id="L-90"><a href="#L-90"><span class="linenos"> 90</span></a> <span class="c1"># NOT NOT x -> x</span> +</span><span id="L-91"><a href="#L-91"><span class="linenos"> 91</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">this</span> +</span><span id="L-92"><a href="#L-92"><span class="linenos"> 92</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="L-93"><a href="#L-93"><span class="linenos"> 93</span></a> -</span><span id="L-94"><a href="#L-94"><span class="linenos"> 94</span></a><span class="k">def</span> <span class="nf">flatten</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-95"><a href="#L-95"><span class="linenos"> 95</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-96"><a href="#L-96"><span class="linenos"> 96</span></a><span class="sd"> A AND (B AND C) -> A AND B AND C</span> -</span><span id="L-97"><a href="#L-97"><span class="linenos"> 97</span></a><span class="sd"> A OR (B OR C) -> A OR B OR C</span> -</span><span id="L-98"><a href="#L-98"><span class="linenos"> 98</span></a><span class="sd"> """</span> -</span><span id="L-99"><a href="#L-99"><span class="linenos"> 99</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> -</span><span id="L-100"><a href="#L-100"><span class="linenos">100</span></a> <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> -</span><span id="L-101"><a href="#L-101"><span class="linenos">101</span></a> <span class="n">child</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span> -</span><span id="L-102"><a href="#L-102"><span class="linenos">102</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">child</span><span class="p">,</span> <span class="n">expression</span><span class="o">.</span><span class="vm">__class__</span><span class="p">):</span> -</span><span id="L-103"><a href="#L-103"><span class="linenos">103</span></a> <span class="n">node</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">child</span><span class="p">)</span> -</span><span id="L-104"><a href="#L-104"><span class="linenos">104</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-105"><a href="#L-105"><span class="linenos">105</span></a> +</span><span id="L-94"><a href="#L-94"><span class="linenos"> 94</span></a> +</span><span id="L-95"><a href="#L-95"><span class="linenos"> 95</span></a><span class="k">def</span> <span class="nf">flatten</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-96"><a href="#L-96"><span class="linenos"> 96</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-97"><a href="#L-97"><span class="linenos"> 97</span></a><span class="sd"> A AND (B AND C) -> A AND B AND C</span> +</span><span id="L-98"><a href="#L-98"><span class="linenos"> 98</span></a><span class="sd"> A OR (B OR C) -> A OR B OR C</span> +</span><span id="L-99"><a href="#L-99"><span class="linenos"> 99</span></a><span class="sd"> """</span> +</span><span id="L-100"><a href="#L-100"><span class="linenos">100</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> +</span><span id="L-101"><a href="#L-101"><span class="linenos">101</span></a> <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> +</span><span id="L-102"><a href="#L-102"><span class="linenos">102</span></a> <span class="n">child</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span> +</span><span id="L-103"><a href="#L-103"><span class="linenos">103</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">child</span><span class="p">,</span> <span class="n">expression</span><span class="o">.</span><span class="vm">__class__</span><span class="p">):</span> +</span><span id="L-104"><a href="#L-104"><span class="linenos">104</span></a> <span class="n">node</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">child</span><span class="p">)</span> +</span><span id="L-105"><a href="#L-105"><span class="linenos">105</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="L-106"><a href="#L-106"><span class="linenos">106</span></a> -</span><span id="L-107"><a href="#L-107"><span class="linenos">107</span></a><span class="k">def</span> <span class="nf">simplify_connectors</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-108"><a href="#L-108"><span class="linenos">108</span></a> <span class="k">def</span> <span class="nf">_simplify_connectors</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">):</span> -</span><span id="L-109"><a href="#L-109"><span class="linenos">109</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> -</span><span id="L-110"><a href="#L-110"><span class="linenos">110</span></a> <span class="k">if</span> <span class="n">left</span> <span class="o">==</span> <span class="n">right</span><span class="p">:</span> -</span><span id="L-111"><a href="#L-111"><span class="linenos">111</span></a> <span class="k">return</span> <span class="n">left</span> -</span><span id="L-112"><a href="#L-112"><span class="linenos">112</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">):</span> -</span><span id="L-113"><a href="#L-113"><span class="linenos">113</span></a> <span class="k">if</span> <span class="n">FALSE</span> <span class="ow">in</span> <span class="p">(</span><span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">):</span> -</span><span id="L-114"><a href="#L-114"><span class="linenos">114</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> -</span><span id="L-115"><a href="#L-115"><span class="linenos">115</span></a> <span class="k">if</span> <span class="n">NULL</span> <span class="ow">in</span> <span class="p">(</span><span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">):</span> -</span><span id="L-116"><a href="#L-116"><span class="linenos">116</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> -</span><span id="L-117"><a href="#L-117"><span class="linenos">117</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">and</span> <span class="n">always_true</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> -</span><span id="L-118"><a href="#L-118"><span class="linenos">118</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> -</span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">left</span><span class="p">):</span> -</span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a> <span class="k">return</span> <span class="n">right</span> -</span><span id="L-121"><a href="#L-121"><span class="linenos">121</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> -</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a> <span class="k">return</span> <span class="n">left</span> -</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a> <span class="k">return</span> <span class="n">_simplify_comparison</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">)</span> -</span><span id="L-124"><a href="#L-124"><span class="linenos">124</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">):</span> -</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">or</span> <span class="n">always_true</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> -</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> -</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a> <span class="k">if</span> <span class="n">left</span> <span class="o">==</span> <span class="n">FALSE</span> <span class="ow">and</span> <span class="n">right</span> <span class="o">==</span> <span class="n">FALSE</span><span class="p">:</span> -</span><span id="L-128"><a href="#L-128"><span class="linenos">128</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> -</span><span id="L-129"><a href="#L-129"><span class="linenos">129</span></a> <span class="k">if</span> <span class="p">(</span> -</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a> <span class="p">(</span><span class="n">left</span> <span class="o">==</span> <span class="n">NULL</span> <span class="ow">and</span> <span class="n">right</span> <span class="o">==</span> <span class="n">NULL</span><span class="p">)</span> -</span><span id="L-131"><a href="#L-131"><span class="linenos">131</span></a> <span class="ow">or</span> <span class="p">(</span><span class="n">left</span> <span class="o">==</span> <span class="n">NULL</span> <span class="ow">and</span> <span class="n">right</span> <span class="o">==</span> <span class="n">FALSE</span><span class="p">)</span> -</span><span id="L-132"><a href="#L-132"><span class="linenos">132</span></a> <span class="ow">or</span> <span class="p">(</span><span class="n">left</span> <span class="o">==</span> <span class="n">FALSE</span> <span class="ow">and</span> <span class="n">right</span> <span class="o">==</span> <span class="n">NULL</span><span class="p">)</span> -</span><span id="L-133"><a href="#L-133"><span class="linenos">133</span></a> <span class="p">):</span> -</span><span id="L-134"><a href="#L-134"><span class="linenos">134</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> -</span><span id="L-135"><a href="#L-135"><span class="linenos">135</span></a> <span class="k">if</span> <span class="n">left</span> <span class="o">==</span> <span class="n">FALSE</span><span class="p">:</span> -</span><span id="L-136"><a href="#L-136"><span class="linenos">136</span></a> <span class="k">return</span> <span class="n">right</span> -</span><span id="L-137"><a href="#L-137"><span class="linenos">137</span></a> <span class="k">if</span> <span class="n">right</span> <span class="o">==</span> <span class="n">FALSE</span><span class="p">:</span> -</span><span id="L-138"><a href="#L-138"><span class="linenos">138</span></a> <span class="k">return</span> <span class="n">left</span> -</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a> <span class="k">return</span> <span class="n">_simplify_comparison</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">,</span> <span class="n">or_</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> -</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a> <span class="k">return</span> <span class="kc">None</span> -</span><span id="L-141"><a href="#L-141"><span class="linenos">141</span></a> -</span><span id="L-142"><a href="#L-142"><span class="linenos">142</span></a> <span class="k">return</span> <span class="n">_flat_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">_simplify_connectors</span><span class="p">)</span> -</span><span id="L-143"><a href="#L-143"><span class="linenos">143</span></a> +</span><span id="L-107"><a href="#L-107"><span class="linenos">107</span></a> +</span><span id="L-108"><a href="#L-108"><span class="linenos">108</span></a><span class="k">def</span> <span class="nf">simplify_connectors</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> +</span><span id="L-109"><a href="#L-109"><span class="linenos">109</span></a> <span class="k">def</span> <span class="nf">_simplify_connectors</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">):</span> +</span><span id="L-110"><a href="#L-110"><span class="linenos">110</span></a> <span class="k">if</span> <span class="n">left</span> <span class="o">==</span> <span class="n">right</span><span class="p">:</span> +</span><span id="L-111"><a href="#L-111"><span class="linenos">111</span></a> <span class="k">return</span> <span class="n">left</span> +</span><span id="L-112"><a href="#L-112"><span class="linenos">112</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">):</span> +</span><span id="L-113"><a href="#L-113"><span class="linenos">113</span></a> <span class="k">if</span> <span class="n">is_false</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_false</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> +</span><span id="L-114"><a href="#L-114"><span class="linenos">114</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> +</span><span id="L-115"><a href="#L-115"><span class="linenos">115</span></a> <span class="k">if</span> <span class="n">is_null</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_null</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> +</span><span id="L-116"><a href="#L-116"><span class="linenos">116</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> +</span><span id="L-117"><a href="#L-117"><span class="linenos">117</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">and</span> <span class="n">always_true</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> +</span><span id="L-118"><a href="#L-118"><span class="linenos">118</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> +</span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">left</span><span class="p">):</span> +</span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a> <span class="k">return</span> <span class="n">right</span> +</span><span id="L-121"><a href="#L-121"><span class="linenos">121</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> +</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a> <span class="k">return</span> <span class="n">left</span> +</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a> <span class="k">return</span> <span class="n">_simplify_comparison</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">)</span> +</span><span id="L-124"><a href="#L-124"><span class="linenos">124</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">):</span> +</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">or</span> <span class="n">always_true</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> +</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> +</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a> <span class="k">if</span> <span class="n">is_false</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">and</span> <span class="n">is_false</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> +</span><span id="L-128"><a href="#L-128"><span class="linenos">128</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> +</span><span id="L-129"><a href="#L-129"><span class="linenos">129</span></a> <span class="k">if</span> <span class="p">(</span> +</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a> <span class="p">(</span><span class="n">is_null</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">and</span> <span class="n">is_null</span><span class="p">(</span><span class="n">right</span><span class="p">))</span> +</span><span id="L-131"><a href="#L-131"><span class="linenos">131</span></a> <span class="ow">or</span> <span class="p">(</span><span class="n">is_null</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">and</span> <span class="n">is_false</span><span class="p">(</span><span class="n">right</span><span class="p">))</span> +</span><span id="L-132"><a href="#L-132"><span class="linenos">132</span></a> <span class="ow">or</span> <span class="p">(</span><span class="n">is_false</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">and</span> <span class="n">is_null</span><span class="p">(</span><span class="n">right</span><span class="p">))</span> +</span><span id="L-133"><a href="#L-133"><span class="linenos">133</span></a> <span class="p">):</span> +</span><span id="L-134"><a href="#L-134"><span class="linenos">134</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> +</span><span id="L-135"><a href="#L-135"><span class="linenos">135</span></a> <span class="k">if</span> <span class="n">is_false</span><span class="p">(</span><span class="n">left</span><span class="p">):</span> +</span><span id="L-136"><a href="#L-136"><span class="linenos">136</span></a> <span class="k">return</span> <span class="n">right</span> +</span><span id="L-137"><a href="#L-137"><span class="linenos">137</span></a> <span class="k">if</span> <span class="n">is_false</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> +</span><span id="L-138"><a href="#L-138"><span class="linenos">138</span></a> <span class="k">return</span> <span class="n">left</span> +</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a> <span class="k">return</span> <span class="n">_simplify_comparison</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">,</span> <span class="n">or_</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> +</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a> +</span><span id="L-141"><a href="#L-141"><span class="linenos">141</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> +</span><span id="L-142"><a href="#L-142"><span class="linenos">142</span></a> <span class="k">return</span> <span class="n">_flat_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">_simplify_connectors</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span> +</span><span id="L-143"><a href="#L-143"><span class="linenos">143</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="L-144"><a href="#L-144"><span class="linenos">144</span></a> -</span><span id="L-145"><a href="#L-145"><span class="linenos">145</span></a><span class="n">LT_LTE</span> <span class="o">=</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">)</span> -</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a><span class="n">GT_GTE</span> <span class="o">=</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">)</span> -</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a> -</span><span id="L-148"><a href="#L-148"><span class="linenos">148</span></a><span class="n">COMPARISONS</span> <span class="o">=</span> <span class="p">(</span> -</span><span id="L-149"><a href="#L-149"><span class="linenos">149</span></a> <span class="o">*</span><span class="n">LT_LTE</span><span class="p">,</span> -</span><span id="L-150"><a href="#L-150"><span class="linenos">150</span></a> <span class="o">*</span><span class="n">GT_GTE</span><span class="p">,</span> -</span><span id="L-151"><a href="#L-151"><span class="linenos">151</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">,</span> -</span><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">NEQ</span><span class="p">,</span> -</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a><span class="p">)</span> -</span><span id="L-154"><a href="#L-154"><span class="linenos">154</span></a> -</span><span id="L-155"><a href="#L-155"><span class="linenos">155</span></a><span class="n">INVERSE_COMPARISONS</span> <span class="o">=</span> <span class="p">{</span> -</span><span id="L-156"><a href="#L-156"><span class="linenos">156</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">,</span> -</span><span id="L-157"><a href="#L-157"><span class="linenos">157</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">,</span> -</span><span id="L-158"><a href="#L-158"><span class="linenos">158</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">,</span> -</span><span id="L-159"><a href="#L-159"><span class="linenos">159</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">,</span> -</span><span id="L-160"><a href="#L-160"><span class="linenos">160</span></a><span class="p">}</span> -</span><span id="L-161"><a href="#L-161"><span class="linenos">161</span></a> +</span><span id="L-145"><a href="#L-145"><span class="linenos">145</span></a> +</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a><span class="n">LT_LTE</span> <span class="o">=</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">)</span> +</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a><span class="n">GT_GTE</span> <span class="o">=</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">)</span> +</span><span id="L-148"><a href="#L-148"><span class="linenos">148</span></a> +</span><span id="L-149"><a href="#L-149"><span class="linenos">149</span></a><span class="n">COMPARISONS</span> <span class="o">=</span> <span class="p">(</span> +</span><span id="L-150"><a href="#L-150"><span class="linenos">150</span></a> <span class="o">*</span><span class="n">LT_LTE</span><span class="p">,</span> +</span><span id="L-151"><a href="#L-151"><span class="linenos">151</span></a> <span class="o">*</span><span class="n">GT_GTE</span><span class="p">,</span> +</span><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">,</span> +</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">NEQ</span><span class="p">,</span> +</span><span id="L-154"><a href="#L-154"><span class="linenos">154</span></a><span class="p">)</span> +</span><span id="L-155"><a href="#L-155"><span class="linenos">155</span></a> +</span><span id="L-156"><a href="#L-156"><span class="linenos">156</span></a><span class="n">INVERSE_COMPARISONS</span> <span class="o">=</span> <span class="p">{</span> +</span><span id="L-157"><a href="#L-157"><span class="linenos">157</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">,</span> +</span><span id="L-158"><a href="#L-158"><span class="linenos">158</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">,</span> +</span><span id="L-159"><a href="#L-159"><span class="linenos">159</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">,</span> +</span><span id="L-160"><a href="#L-160"><span class="linenos">160</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">,</span> +</span><span id="L-161"><a href="#L-161"><span class="linenos">161</span></a><span class="p">}</span> </span><span id="L-162"><a href="#L-162"><span class="linenos">162</span></a> -</span><span id="L-163"><a href="#L-163"><span class="linenos">163</span></a><span class="k">def</span> <span class="nf">_simplify_comparison</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">,</span> <span class="n">or_</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> -</span><span id="L-164"><a href="#L-164"><span class="linenos">164</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">left</span><span class="p">,</span> <span class="n">COMPARISONS</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">right</span><span class="p">,</span> <span class="n">COMPARISONS</span><span class="p">):</span> -</span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a> <span class="n">ll</span><span class="p">,</span> <span class="n">lr</span> <span class="o">=</span> <span class="n">left</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">values</span><span class="p">()</span> -</span><span id="L-166"><a href="#L-166"><span class="linenos">166</span></a> <span class="n">rl</span><span class="p">,</span> <span class="n">rr</span> <span class="o">=</span> <span class="n">right</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">values</span><span class="p">()</span> -</span><span id="L-167"><a href="#L-167"><span class="linenos">167</span></a> -</span><span id="L-168"><a href="#L-168"><span class="linenos">168</span></a> <span class="n">largs</span> <span class="o">=</span> <span class="p">{</span><span class="n">ll</span><span class="p">,</span> <span class="n">lr</span><span class="p">}</span> -</span><span id="L-169"><a href="#L-169"><span class="linenos">169</span></a> <span class="n">rargs</span> <span class="o">=</span> <span class="p">{</span><span class="n">rl</span><span class="p">,</span> <span class="n">rr</span><span class="p">}</span> -</span><span id="L-170"><a href="#L-170"><span class="linenos">170</span></a> -</span><span id="L-171"><a href="#L-171"><span class="linenos">171</span></a> <span class="n">matching</span> <span class="o">=</span> <span class="n">largs</span> <span class="o">&</span> <span class="n">rargs</span> -</span><span id="L-172"><a href="#L-172"><span class="linenos">172</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">m</span> <span class="k">for</span> <span class="n">m</span> <span class="ow">in</span> <span class="n">matching</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">m</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">)}</span> -</span><span id="L-173"><a href="#L-173"><span class="linenos">173</span></a> -</span><span id="L-174"><a href="#L-174"><span class="linenos">174</span></a> <span class="k">if</span> <span class="n">matching</span> <span class="ow">and</span> <span class="n">columns</span><span class="p">:</span> -</span><span id="L-175"><a href="#L-175"><span class="linenos">175</span></a> <span class="k">try</span><span class="p">:</span> -</span><span id="L-176"><a href="#L-176"><span class="linenos">176</span></a> <span class="n">l</span> <span class="o">=</span> <span class="n">first</span><span class="p">(</span><span class="n">largs</span> <span class="o">-</span> <span class="n">columns</span><span class="p">)</span> -</span><span id="L-177"><a href="#L-177"><span class="linenos">177</span></a> <span class="n">r</span> <span class="o">=</span> <span class="n">first</span><span class="p">(</span><span class="n">rargs</span> <span class="o">-</span> <span class="n">columns</span><span class="p">)</span> -</span><span id="L-178"><a href="#L-178"><span class="linenos">178</span></a> <span class="k">except</span> <span class="ne">StopIteration</span><span class="p">:</span> -</span><span id="L-179"><a href="#L-179"><span class="linenos">179</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-180"><a href="#L-180"><span class="linenos">180</span></a> -</span><span id="L-181"><a href="#L-181"><span class="linenos">181</span></a> <span class="c1"># make sure the comparison is always of the form x > 1 instead of 1 < x</span> -</span><span id="L-182"><a href="#L-182"><span class="linenos">182</span></a> <span class="k">if</span> <span class="n">left</span><span class="o">.</span><span class="vm">__class__</span> <span class="ow">in</span> <span class="n">INVERSE_COMPARISONS</span> <span class="ow">and</span> <span class="n">l</span> <span class="o">==</span> <span class="n">ll</span><span class="p">:</span> -</span><span id="L-183"><a href="#L-183"><span class="linenos">183</span></a> <span class="n">left</span> <span class="o">=</span> <span class="n">INVERSE_COMPARISONS</span><span class="p">[</span><span class="n">left</span><span class="o">.</span><span class="vm">__class__</span><span class="p">](</span><span class="n">this</span><span class="o">=</span><span class="n">lr</span><span class="p">,</span> <span class="n">expression</span><span class="o">=</span><span class="n">ll</span><span class="p">)</span> -</span><span id="L-184"><a href="#L-184"><span class="linenos">184</span></a> <span class="k">if</span> <span class="n">right</span><span class="o">.</span><span class="vm">__class__</span> <span class="ow">in</span> <span class="n">INVERSE_COMPARISONS</span> <span class="ow">and</span> <span class="n">r</span> <span class="o">==</span> <span class="n">rl</span><span class="p">:</span> -</span><span id="L-185"><a href="#L-185"><span class="linenos">185</span></a> <span class="n">right</span> <span class="o">=</span> <span class="n">INVERSE_COMPARISONS</span><span class="p">[</span><span class="n">right</span><span class="o">.</span><span class="vm">__class__</span><span class="p">](</span><span class="n">this</span><span class="o">=</span><span class="n">rr</span><span class="p">,</span> <span class="n">expression</span><span class="o">=</span><span class="n">rl</span><span class="p">)</span> -</span><span id="L-186"><a href="#L-186"><span class="linenos">186</span></a> -</span><span id="L-187"><a href="#L-187"><span class="linenos">187</span></a> <span class="k">if</span> <span class="n">l</span><span class="o">.</span><span class="n">is_number</span> <span class="ow">and</span> <span class="n">r</span><span class="o">.</span><span class="n">is_number</span><span class="p">:</span> -</span><span id="L-188"><a href="#L-188"><span class="linenos">188</span></a> <span class="n">l</span> <span class="o">=</span> <span class="nb">float</span><span class="p">(</span><span class="n">l</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> -</span><span id="L-189"><a href="#L-189"><span class="linenos">189</span></a> <span class="n">r</span> <span class="o">=</span> <span class="nb">float</span><span class="p">(</span><span class="n">r</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> -</span><span id="L-190"><a href="#L-190"><span class="linenos">190</span></a> <span class="k">elif</span> <span class="n">l</span><span class="o">.</span><span class="n">is_string</span> <span class="ow">and</span> <span class="n">r</span><span class="o">.</span><span class="n">is_string</span><span class="p">:</span> -</span><span id="L-191"><a href="#L-191"><span class="linenos">191</span></a> <span class="n">l</span> <span class="o">=</span> <span class="n">l</span><span class="o">.</span><span class="n">name</span> -</span><span id="L-192"><a href="#L-192"><span class="linenos">192</span></a> <span class="n">r</span> <span class="o">=</span> <span class="n">r</span><span class="o">.</span><span class="n">name</span> -</span><span id="L-193"><a href="#L-193"><span class="linenos">193</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-194"><a href="#L-194"><span class="linenos">194</span></a> <span class="k">return</span> <span class="kc">None</span> -</span><span id="L-195"><a href="#L-195"><span class="linenos">195</span></a> -</span><span id="L-196"><a href="#L-196"><span class="linenos">196</span></a> <span class="k">for</span> <span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">av</span><span class="p">),</span> <span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">bv</span><span class="p">)</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">permutations</span><span class="p">(((</span><span class="n">left</span><span class="p">,</span> <span class="n">l</span><span class="p">),</span> <span class="p">(</span><span class="n">right</span><span class="p">,</span> <span class="n">r</span><span class="p">))):</span> -</span><span id="L-197"><a href="#L-197"><span class="linenos">197</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">LT_LTE</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">LT_LTE</span><span class="p">):</span> -</span><span id="L-198"><a href="#L-198"><span class="linenos">198</span></a> <span class="k">return</span> <span class="n">left</span> <span class="k">if</span> <span class="p">(</span><span class="n">av</span> <span class="o">></span> <span class="n">bv</span> <span class="k">if</span> <span class="n">or_</span> <span class="k">else</span> <span class="n">av</span> <span class="o"><=</span> <span class="n">bv</span><span class="p">)</span> <span class="k">else</span> <span class="n">right</span> -</span><span id="L-199"><a href="#L-199"><span class="linenos">199</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">GT_GTE</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">GT_GTE</span><span class="p">):</span> -</span><span id="L-200"><a href="#L-200"><span class="linenos">200</span></a> <span class="k">return</span> <span class="n">left</span> <span class="k">if</span> <span class="p">(</span><span class="n">av</span> <span class="o"><</span> <span class="n">bv</span> <span class="k">if</span> <span class="n">or_</span> <span class="k">else</span> <span class="n">av</span> <span class="o">>=</span> <span class="n">bv</span><span class="p">)</span> <span class="k">else</span> <span class="n">right</span> -</span><span id="L-201"><a href="#L-201"><span class="linenos">201</span></a> -</span><span id="L-202"><a href="#L-202"><span class="linenos">202</span></a> <span class="c1"># we can't ever shortcut to true because the column could be null</span> -</span><span id="L-203"><a href="#L-203"><span class="linenos">203</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">GT_GTE</span><span class="p">):</span> -</span><span id="L-204"><a href="#L-204"><span class="linenos">204</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">or_</span> <span class="ow">and</span> <span class="n">av</span> <span class="o"><=</span> <span class="n">bv</span><span class="p">:</span> -</span><span id="L-205"><a href="#L-205"><span class="linenos">205</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> -</span><span id="L-206"><a href="#L-206"><span class="linenos">206</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">LT_LTE</span><span class="p">):</span> -</span><span id="L-207"><a href="#L-207"><span class="linenos">207</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">or_</span> <span class="ow">and</span> <span class="n">av</span> <span class="o">>=</span> <span class="n">bv</span><span class="p">:</span> -</span><span id="L-208"><a href="#L-208"><span class="linenos">208</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> -</span><span id="L-209"><a href="#L-209"><span class="linenos">209</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">):</span> -</span><span id="L-210"><a href="#L-210"><span class="linenos">210</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">):</span> -</span><span id="L-211"><a href="#L-211"><span class="linenos">211</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">av</span> <span class="o">>=</span> <span class="n">bv</span> <span class="k">else</span> <span class="n">a</span> -</span><span id="L-212"><a href="#L-212"><span class="linenos">212</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">):</span> -</span><span id="L-213"><a href="#L-213"><span class="linenos">213</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">av</span> <span class="o">></span> <span class="n">bv</span> <span class="k">else</span> <span class="n">a</span> -</span><span id="L-214"><a href="#L-214"><span class="linenos">214</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">):</span> -</span><span id="L-215"><a href="#L-215"><span class="linenos">215</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">av</span> <span class="o"><=</span> <span class="n">bv</span> <span class="k">else</span> <span class="n">a</span> -</span><span id="L-216"><a href="#L-216"><span class="linenos">216</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">):</span> -</span><span id="L-217"><a href="#L-217"><span class="linenos">217</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">av</span> <span class="o"><</span> <span class="n">bv</span> <span class="k">else</span> <span class="n">a</span> -</span><span id="L-218"><a href="#L-218"><span class="linenos">218</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">NEQ</span><span class="p">):</span> -</span><span id="L-219"><a href="#L-219"><span class="linenos">219</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">av</span> <span class="o">==</span> <span class="n">bv</span> <span class="k">else</span> <span class="n">a</span> -</span><span id="L-220"><a href="#L-220"><span class="linenos">220</span></a> <span class="k">return</span> <span class="kc">None</span> -</span><span id="L-221"><a href="#L-221"><span class="linenos">221</span></a> +</span><span id="L-163"><a href="#L-163"><span class="linenos">163</span></a> +</span><span id="L-164"><a href="#L-164"><span class="linenos">164</span></a><span class="k">def</span> <span class="nf">_simplify_comparison</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">,</span> <span class="n">or_</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> +</span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">left</span><span class="p">,</span> <span class="n">COMPARISONS</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">right</span><span class="p">,</span> <span class="n">COMPARISONS</span><span class="p">):</span> +</span><span id="L-166"><a href="#L-166"><span class="linenos">166</span></a> <span class="n">ll</span><span class="p">,</span> <span class="n">lr</span> <span class="o">=</span> <span class="n">left</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">values</span><span class="p">()</span> +</span><span id="L-167"><a href="#L-167"><span class="linenos">167</span></a> <span class="n">rl</span><span class="p">,</span> <span class="n">rr</span> <span class="o">=</span> <span class="n">right</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">values</span><span class="p">()</span> +</span><span id="L-168"><a href="#L-168"><span class="linenos">168</span></a> +</span><span id="L-169"><a href="#L-169"><span class="linenos">169</span></a> <span class="n">largs</span> <span class="o">=</span> <span class="p">{</span><span class="n">ll</span><span class="p">,</span> <span class="n">lr</span><span class="p">}</span> +</span><span id="L-170"><a href="#L-170"><span class="linenos">170</span></a> <span class="n">rargs</span> <span class="o">=</span> <span class="p">{</span><span class="n">rl</span><span class="p">,</span> <span class="n">rr</span><span class="p">}</span> +</span><span id="L-171"><a href="#L-171"><span class="linenos">171</span></a> +</span><span id="L-172"><a href="#L-172"><span class="linenos">172</span></a> <span class="n">matching</span> <span class="o">=</span> <span class="n">largs</span> <span class="o">&</span> <span class="n">rargs</span> +</span><span id="L-173"><a href="#L-173"><span class="linenos">173</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">m</span> <span class="k">for</span> <span class="n">m</span> <span class="ow">in</span> <span class="n">matching</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">m</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">)}</span> +</span><span id="L-174"><a href="#L-174"><span class="linenos">174</span></a> +</span><span id="L-175"><a href="#L-175"><span class="linenos">175</span></a> <span class="k">if</span> <span class="n">matching</span> <span class="ow">and</span> <span class="n">columns</span><span class="p">:</span> +</span><span id="L-176"><a href="#L-176"><span class="linenos">176</span></a> <span class="k">try</span><span class="p">:</span> +</span><span id="L-177"><a href="#L-177"><span class="linenos">177</span></a> <span class="n">l</span> <span class="o">=</span> <span class="n">first</span><span class="p">(</span><span class="n">largs</span> <span class="o">-</span> <span class="n">columns</span><span class="p">)</span> +</span><span id="L-178"><a href="#L-178"><span class="linenos">178</span></a> <span class="n">r</span> <span class="o">=</span> <span class="n">first</span><span class="p">(</span><span class="n">rargs</span> <span class="o">-</span> <span class="n">columns</span><span class="p">)</span> +</span><span id="L-179"><a href="#L-179"><span class="linenos">179</span></a> <span class="k">except</span> <span class="ne">StopIteration</span><span class="p">:</span> +</span><span id="L-180"><a href="#L-180"><span class="linenos">180</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-181"><a href="#L-181"><span class="linenos">181</span></a> +</span><span id="L-182"><a href="#L-182"><span class="linenos">182</span></a> <span class="c1"># make sure the comparison is always of the form x > 1 instead of 1 < x</span> +</span><span id="L-183"><a href="#L-183"><span class="linenos">183</span></a> <span class="k">if</span> <span class="n">left</span><span class="o">.</span><span class="vm">__class__</span> <span class="ow">in</span> <span class="n">INVERSE_COMPARISONS</span> <span class="ow">and</span> <span class="n">l</span> <span class="o">==</span> <span class="n">ll</span><span class="p">:</span> +</span><span id="L-184"><a href="#L-184"><span class="linenos">184</span></a> <span class="n">left</span> <span class="o">=</span> <span class="n">INVERSE_COMPARISONS</span><span class="p">[</span><span class="n">left</span><span class="o">.</span><span class="vm">__class__</span><span class="p">](</span><span class="n">this</span><span class="o">=</span><span class="n">lr</span><span class="p">,</span> <span class="n">expression</span><span class="o">=</span><span class="n">ll</span><span class="p">)</span> +</span><span id="L-185"><a href="#L-185"><span class="linenos">185</span></a> <span class="k">if</span> <span class="n">right</span><span class="o">.</span><span class="vm">__class__</span> <span class="ow">in</span> <span class="n">INVERSE_COMPARISONS</span> <span class="ow">and</span> <span class="n">r</span> <span class="o">==</span> <span class="n">rl</span><span class="p">:</span> +</span><span id="L-186"><a href="#L-186"><span class="linenos">186</span></a> <span class="n">right</span> <span class="o">=</span> <span class="n">INVERSE_COMPARISONS</span><span class="p">[</span><span class="n">right</span><span class="o">.</span><span class="vm">__class__</span><span class="p">](</span><span class="n">this</span><span class="o">=</span><span class="n">rr</span><span class="p">,</span> <span class="n">expression</span><span class="o">=</span><span class="n">rl</span><span class="p">)</span> +</span><span id="L-187"><a href="#L-187"><span class="linenos">187</span></a> +</span><span id="L-188"><a href="#L-188"><span class="linenos">188</span></a> <span class="k">if</span> <span class="n">l</span><span class="o">.</span><span class="n">is_number</span> <span class="ow">and</span> <span class="n">r</span><span class="o">.</span><span class="n">is_number</span><span class="p">:</span> +</span><span id="L-189"><a href="#L-189"><span class="linenos">189</span></a> <span class="n">l</span> <span class="o">=</span> <span class="nb">float</span><span class="p">(</span><span class="n">l</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-190"><a href="#L-190"><span class="linenos">190</span></a> <span class="n">r</span> <span class="o">=</span> <span class="nb">float</span><span class="p">(</span><span class="n">r</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-191"><a href="#L-191"><span class="linenos">191</span></a> <span class="k">elif</span> <span class="n">l</span><span class="o">.</span><span class="n">is_string</span> <span class="ow">and</span> <span class="n">r</span><span class="o">.</span><span class="n">is_string</span><span class="p">:</span> +</span><span id="L-192"><a href="#L-192"><span class="linenos">192</span></a> <span class="n">l</span> <span class="o">=</span> <span class="n">l</span><span class="o">.</span><span class="n">name</span> +</span><span id="L-193"><a href="#L-193"><span class="linenos">193</span></a> <span class="n">r</span> <span class="o">=</span> <span class="n">r</span><span class="o">.</span><span class="n">name</span> +</span><span id="L-194"><a href="#L-194"><span class="linenos">194</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-195"><a href="#L-195"><span class="linenos">195</span></a> <span class="k">return</span> <span class="kc">None</span> +</span><span id="L-196"><a href="#L-196"><span class="linenos">196</span></a> +</span><span id="L-197"><a href="#L-197"><span class="linenos">197</span></a> <span class="k">for</span> <span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">av</span><span class="p">),</span> <span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">bv</span><span class="p">)</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">permutations</span><span class="p">(((</span><span class="n">left</span><span class="p">,</span> <span class="n">l</span><span class="p">),</span> <span class="p">(</span><span class="n">right</span><span class="p">,</span> <span class="n">r</span><span class="p">))):</span> +</span><span id="L-198"><a href="#L-198"><span class="linenos">198</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">LT_LTE</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">LT_LTE</span><span class="p">):</span> +</span><span id="L-199"><a href="#L-199"><span class="linenos">199</span></a> <span class="k">return</span> <span class="n">left</span> <span class="k">if</span> <span class="p">(</span><span class="n">av</span> <span class="o">></span> <span class="n">bv</span> <span class="k">if</span> <span class="n">or_</span> <span class="k">else</span> <span class="n">av</span> <span class="o"><=</span> <span class="n">bv</span><span class="p">)</span> <span class="k">else</span> <span class="n">right</span> +</span><span id="L-200"><a href="#L-200"><span class="linenos">200</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">GT_GTE</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">GT_GTE</span><span class="p">):</span> +</span><span id="L-201"><a href="#L-201"><span class="linenos">201</span></a> <span class="k">return</span> <span class="n">left</span> <span class="k">if</span> <span class="p">(</span><span class="n">av</span> <span class="o"><</span> <span class="n">bv</span> <span class="k">if</span> <span class="n">or_</span> <span class="k">else</span> <span class="n">av</span> <span class="o">>=</span> <span class="n">bv</span><span class="p">)</span> <span class="k">else</span> <span class="n">right</span> +</span><span id="L-202"><a href="#L-202"><span class="linenos">202</span></a> +</span><span id="L-203"><a href="#L-203"><span class="linenos">203</span></a> <span class="c1"># we can't ever shortcut to true because the column could be null</span> +</span><span id="L-204"><a href="#L-204"><span class="linenos">204</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">GT_GTE</span><span class="p">):</span> +</span><span id="L-205"><a href="#L-205"><span class="linenos">205</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">or_</span> <span class="ow">and</span> <span class="n">av</span> <span class="o"><=</span> <span class="n">bv</span><span class="p">:</span> +</span><span id="L-206"><a href="#L-206"><span class="linenos">206</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> +</span><span id="L-207"><a href="#L-207"><span class="linenos">207</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">LT_LTE</span><span class="p">):</span> +</span><span id="L-208"><a href="#L-208"><span class="linenos">208</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">or_</span> <span class="ow">and</span> <span class="n">av</span> <span class="o">>=</span> <span class="n">bv</span><span class="p">:</span> +</span><span id="L-209"><a href="#L-209"><span class="linenos">209</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> +</span><span id="L-210"><a href="#L-210"><span class="linenos">210</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">):</span> +</span><span id="L-211"><a href="#L-211"><span class="linenos">211</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">):</span> +</span><span id="L-212"><a href="#L-212"><span class="linenos">212</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">av</span> <span class="o">>=</span> <span class="n">bv</span> <span class="k">else</span> <span class="n">a</span> +</span><span id="L-213"><a href="#L-213"><span class="linenos">213</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">):</span> +</span><span id="L-214"><a href="#L-214"><span class="linenos">214</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">av</span> <span class="o">></span> <span class="n">bv</span> <span class="k">else</span> <span class="n">a</span> +</span><span id="L-215"><a href="#L-215"><span class="linenos">215</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">):</span> +</span><span id="L-216"><a href="#L-216"><span class="linenos">216</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">av</span> <span class="o"><=</span> <span class="n">bv</span> <span class="k">else</span> <span class="n">a</span> +</span><span id="L-217"><a href="#L-217"><span class="linenos">217</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">):</span> +</span><span id="L-218"><a href="#L-218"><span class="linenos">218</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">av</span> <span class="o"><</span> <span class="n">bv</span> <span class="k">else</span> <span class="n">a</span> +</span><span id="L-219"><a href="#L-219"><span class="linenos">219</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">NEQ</span><span class="p">):</span> +</span><span id="L-220"><a href="#L-220"><span class="linenos">220</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">av</span> <span class="o">==</span> <span class="n">bv</span> <span class="k">else</span> <span class="n">a</span> +</span><span id="L-221"><a href="#L-221"><span class="linenos">221</span></a> <span class="k">return</span> <span class="kc">None</span> </span><span id="L-222"><a href="#L-222"><span class="linenos">222</span></a> -</span><span id="L-223"><a href="#L-223"><span class="linenos">223</span></a><span class="k">def</span> <span class="nf">remove_compliments</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-224"><a href="#L-224"><span class="linenos">224</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-225"><a href="#L-225"><span class="linenos">225</span></a><span class="sd"> Removing compliments.</span> -</span><span id="L-226"><a href="#L-226"><span class="linenos">226</span></a> -</span><span id="L-227"><a href="#L-227"><span class="linenos">227</span></a><span class="sd"> A AND NOT A -> FALSE</span> -</span><span id="L-228"><a href="#L-228"><span class="linenos">228</span></a><span class="sd"> A OR NOT A -> TRUE</span> -</span><span id="L-229"><a href="#L-229"><span class="linenos">229</span></a><span class="sd"> """</span> -</span><span id="L-230"><a href="#L-230"><span class="linenos">230</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> -</span><span id="L-231"><a href="#L-231"><span class="linenos">231</span></a> <span class="n">compliment</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> -</span><span id="L-232"><a href="#L-232"><span class="linenos">232</span></a> -</span><span id="L-233"><a href="#L-233"><span class="linenos">233</span></a> <span class="k">for</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">permutations</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">(),</span> <span class="mi">2</span><span class="p">):</span> -</span><span id="L-234"><a href="#L-234"><span class="linenos">234</span></a> <span class="k">if</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> -</span><span id="L-235"><a href="#L-235"><span class="linenos">235</span></a> <span class="k">return</span> <span class="n">compliment</span> -</span><span id="L-236"><a href="#L-236"><span class="linenos">236</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-237"><a href="#L-237"><span class="linenos">237</span></a> +</span><span id="L-223"><a href="#L-223"><span class="linenos">223</span></a> +</span><span id="L-224"><a href="#L-224"><span class="linenos">224</span></a><span class="k">def</span> <span class="nf">remove_compliments</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> +</span><span id="L-225"><a href="#L-225"><span class="linenos">225</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-226"><a href="#L-226"><span class="linenos">226</span></a><span class="sd"> Removing compliments.</span> +</span><span id="L-227"><a href="#L-227"><span class="linenos">227</span></a> +</span><span id="L-228"><a href="#L-228"><span class="linenos">228</span></a><span class="sd"> A AND NOT A -> FALSE</span> +</span><span id="L-229"><a href="#L-229"><span class="linenos">229</span></a><span class="sd"> A OR NOT A -> TRUE</span> +</span><span id="L-230"><a href="#L-230"><span class="linenos">230</span></a><span class="sd"> """</span> +</span><span id="L-231"><a href="#L-231"><span class="linenos">231</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="n">root</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">expression</span><span class="o">.</span><span class="n">same_parent</span><span class="p">):</span> +</span><span id="L-232"><a href="#L-232"><span class="linenos">232</span></a> <span class="n">compliment</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> +</span><span id="L-233"><a href="#L-233"><span class="linenos">233</span></a> +</span><span id="L-234"><a href="#L-234"><span class="linenos">234</span></a> <span class="k">for</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">permutations</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">(),</span> <span class="mi">2</span><span class="p">):</span> +</span><span id="L-235"><a href="#L-235"><span class="linenos">235</span></a> <span class="k">if</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> +</span><span id="L-236"><a href="#L-236"><span class="linenos">236</span></a> <span class="k">return</span> <span class="n">compliment</span> +</span><span id="L-237"><a href="#L-237"><span class="linenos">237</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="L-238"><a href="#L-238"><span class="linenos">238</span></a> -</span><span id="L-239"><a href="#L-239"><span class="linenos">239</span></a><span class="k">def</span> <span class="nf">uniq_sort</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-240"><a href="#L-240"><span class="linenos">240</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-241"><a href="#L-241"><span class="linenos">241</span></a><span class="sd"> Uniq and sort a connector.</span> -</span><span id="L-242"><a href="#L-242"><span class="linenos">242</span></a> -</span><span id="L-243"><a href="#L-243"><span class="linenos">243</span></a><span class="sd"> C AND A AND B AND B -> A AND B AND C</span> -</span><span id="L-244"><a href="#L-244"><span class="linenos">244</span></a><span class="sd"> """</span> -</span><span id="L-245"><a href="#L-245"><span class="linenos">245</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> -</span><span id="L-246"><a href="#L-246"><span class="linenos">246</span></a> <span class="n">result_func</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span> -</span><span id="L-247"><a href="#L-247"><span class="linenos">247</span></a> <span class="n">flattened</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">())</span> -</span><span id="L-248"><a href="#L-248"><span class="linenos">248</span></a> <span class="n">deduped</span> <span class="o">=</span> <span class="p">{</span><span class="n">GENERATOR</span><span class="o">.</span><span class="n">generate</span><span class="p">(</span><span class="n">e</span><span class="p">):</span> <span class="n">e</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">flattened</span><span class="p">}</span> -</span><span id="L-249"><a href="#L-249"><span class="linenos">249</span></a> <span class="n">arr</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">deduped</span><span class="o">.</span><span class="n">items</span><span class="p">())</span> -</span><span id="L-250"><a href="#L-250"><span class="linenos">250</span></a> -</span><span id="L-251"><a href="#L-251"><span class="linenos">251</span></a> <span class="c1"># check if the operands are already sorted, if not sort them</span> -</span><span id="L-252"><a href="#L-252"><span class="linenos">252</span></a> <span class="c1"># A AND C AND B -> A AND B AND C</span> -</span><span id="L-253"><a href="#L-253"><span class="linenos">253</span></a> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="p">(</span><span class="n">sql</span><span class="p">,</span> <span class="n">e</span><span class="p">)</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">arr</span><span class="p">[</span><span class="mi">1</span><span class="p">:]):</span> -</span><span id="L-254"><a href="#L-254"><span class="linenos">254</span></a> <span class="k">if</span> <span class="n">sql</span> <span class="o"><</span> <span class="n">arr</span><span class="p">[</span><span class="n">i</span><span class="p">][</span><span class="mi">0</span><span class="p">]:</span> -</span><span id="L-255"><a href="#L-255"><span class="linenos">255</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">result_func</span><span class="p">(</span><span class="o">*</span><span class="p">(</span><span class="n">deduped</span><span class="p">[</span><span class="n">sql</span><span class="p">]</span> <span class="k">for</span> <span class="n">sql</span> <span class="ow">in</span> <span class="nb">sorted</span><span class="p">(</span><span class="n">deduped</span><span class="p">)))</span> -</span><span id="L-256"><a href="#L-256"><span class="linenos">256</span></a> <span class="k">break</span> -</span><span id="L-257"><a href="#L-257"><span class="linenos">257</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-258"><a href="#L-258"><span class="linenos">258</span></a> <span class="c1"># we didn't have to sort but maybe we need to dedup</span> -</span><span id="L-259"><a href="#L-259"><span class="linenos">259</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">deduped</span><span class="p">)</span> <span class="o"><</span> <span class="nb">len</span><span class="p">(</span><span class="n">flattened</span><span class="p">):</span> -</span><span id="L-260"><a href="#L-260"><span class="linenos">260</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">result_func</span><span class="p">(</span><span class="o">*</span><span class="n">deduped</span><span class="o">.</span><span class="n">values</span><span class="p">())</span> -</span><span id="L-261"><a href="#L-261"><span class="linenos">261</span></a> -</span><span id="L-262"><a href="#L-262"><span class="linenos">262</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-263"><a href="#L-263"><span class="linenos">263</span></a> +</span><span id="L-239"><a href="#L-239"><span class="linenos">239</span></a> +</span><span id="L-240"><a href="#L-240"><span class="linenos">240</span></a><span class="k">def</span> <span class="nf">uniq_sort</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">cache</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> +</span><span id="L-241"><a href="#L-241"><span class="linenos">241</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-242"><a href="#L-242"><span class="linenos">242</span></a><span class="sd"> Uniq and sort a connector.</span> +</span><span id="L-243"><a href="#L-243"><span class="linenos">243</span></a> +</span><span id="L-244"><a href="#L-244"><span class="linenos">244</span></a><span class="sd"> C AND A AND B AND B -> A AND B AND C</span> +</span><span id="L-245"><a href="#L-245"><span class="linenos">245</span></a><span class="sd"> """</span> +</span><span id="L-246"><a href="#L-246"><span class="linenos">246</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="n">root</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">expression</span><span class="o">.</span><span class="n">same_parent</span><span class="p">):</span> +</span><span id="L-247"><a href="#L-247"><span class="linenos">247</span></a> <span class="n">result_func</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span> +</span><span id="L-248"><a href="#L-248"><span class="linenos">248</span></a> <span class="n">flattened</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">())</span> +</span><span id="L-249"><a href="#L-249"><span class="linenos">249</span></a> <span class="n">deduped</span> <span class="o">=</span> <span class="p">{</span><span class="n">GENERATOR</span><span class="o">.</span><span class="n">generate</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="n">cache</span><span class="p">):</span> <span class="n">e</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">flattened</span><span class="p">}</span> +</span><span id="L-250"><a href="#L-250"><span class="linenos">250</span></a> <span class="n">arr</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">deduped</span><span class="o">.</span><span class="n">items</span><span class="p">())</span> +</span><span id="L-251"><a href="#L-251"><span class="linenos">251</span></a> +</span><span id="L-252"><a href="#L-252"><span class="linenos">252</span></a> <span class="c1"># check if the operands are already sorted, if not sort them</span> +</span><span id="L-253"><a href="#L-253"><span class="linenos">253</span></a> <span class="c1"># A AND C AND B -> A AND B AND C</span> +</span><span id="L-254"><a href="#L-254"><span class="linenos">254</span></a> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="p">(</span><span class="n">sql</span><span class="p">,</span> <span class="n">e</span><span class="p">)</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">arr</span><span class="p">[</span><span class="mi">1</span><span class="p">:]):</span> +</span><span id="L-255"><a href="#L-255"><span class="linenos">255</span></a> <span class="k">if</span> <span class="n">sql</span> <span class="o"><</span> <span class="n">arr</span><span class="p">[</span><span class="n">i</span><span class="p">][</span><span class="mi">0</span><span class="p">]:</span> +</span><span id="L-256"><a href="#L-256"><span class="linenos">256</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">result_func</span><span class="p">(</span><span class="o">*</span><span class="p">(</span><span class="n">e</span> <span class="k">for</span> <span class="n">_</span><span class="p">,</span> <span class="n">e</span> <span class="ow">in</span> <span class="nb">sorted</span><span class="p">(</span><span class="n">arr</span><span class="p">)))</span> +</span><span id="L-257"><a href="#L-257"><span class="linenos">257</span></a> <span class="k">break</span> +</span><span id="L-258"><a href="#L-258"><span class="linenos">258</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-259"><a href="#L-259"><span class="linenos">259</span></a> <span class="c1"># we didn't have to sort but maybe we need to dedup</span> +</span><span id="L-260"><a href="#L-260"><span class="linenos">260</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">deduped</span><span class="p">)</span> <span class="o"><</span> <span class="nb">len</span><span class="p">(</span><span class="n">flattened</span><span class="p">):</span> +</span><span id="L-261"><a href="#L-261"><span class="linenos">261</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">result_func</span><span class="p">(</span><span class="o">*</span><span class="n">deduped</span><span class="o">.</span><span class="n">values</span><span class="p">())</span> +</span><span id="L-262"><a href="#L-262"><span class="linenos">262</span></a> +</span><span id="L-263"><a href="#L-263"><span class="linenos">263</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="L-264"><a href="#L-264"><span class="linenos">264</span></a> -</span><span id="L-265"><a href="#L-265"><span class="linenos">265</span></a><span class="k">def</span> <span class="nf">absorb_and_eliminate</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-266"><a href="#L-266"><span class="linenos">266</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-267"><a href="#L-267"><span class="linenos">267</span></a><span class="sd"> absorption:</span> -</span><span id="L-268"><a href="#L-268"><span class="linenos">268</span></a><span class="sd"> A AND (A OR B) -> A</span> -</span><span id="L-269"><a href="#L-269"><span class="linenos">269</span></a><span class="sd"> A OR (A AND B) -> A</span> -</span><span id="L-270"><a href="#L-270"><span class="linenos">270</span></a><span class="sd"> A AND (NOT A OR B) -> A AND B</span> -</span><span id="L-271"><a href="#L-271"><span class="linenos">271</span></a><span class="sd"> A OR (NOT A AND B) -> A OR B</span> -</span><span id="L-272"><a href="#L-272"><span class="linenos">272</span></a><span class="sd"> elimination:</span> -</span><span id="L-273"><a href="#L-273"><span class="linenos">273</span></a><span class="sd"> (A AND B) OR (A AND NOT B) -> A</span> -</span><span id="L-274"><a href="#L-274"><span class="linenos">274</span></a><span class="sd"> (A OR B) AND (A OR NOT B) -> A</span> -</span><span id="L-275"><a href="#L-275"><span class="linenos">275</span></a><span class="sd"> """</span> -</span><span id="L-276"><a href="#L-276"><span class="linenos">276</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> -</span><span id="L-277"><a href="#L-277"><span class="linenos">277</span></a> <span class="n">kind</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> -</span><span id="L-278"><a href="#L-278"><span class="linenos">278</span></a> -</span><span id="L-279"><a href="#L-279"><span class="linenos">279</span></a> <span class="k">for</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">permutations</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">(),</span> <span class="mi">2</span><span class="p">):</span> -</span><span id="L-280"><a href="#L-280"><span class="linenos">280</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">kind</span><span class="p">):</span> -</span><span id="L-281"><a href="#L-281"><span class="linenos">281</span></a> <span class="n">aa</span><span class="p">,</span> <span class="n">ab</span> <span class="o">=</span> <span class="n">a</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">()</span> -</span><span id="L-282"><a href="#L-282"><span class="linenos">282</span></a> -</span><span id="L-283"><a href="#L-283"><span class="linenos">283</span></a> <span class="c1"># absorb</span> -</span><span id="L-284"><a href="#L-284"><span class="linenos">284</span></a> <span class="k">if</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">aa</span><span class="p">):</span> -</span><span id="L-285"><a href="#L-285"><span class="linenos">285</span></a> <span class="n">aa</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">kind</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">())</span> -</span><span id="L-286"><a href="#L-286"><span class="linenos">286</span></a> <span class="k">elif</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">ab</span><span class="p">):</span> -</span><span id="L-287"><a href="#L-287"><span class="linenos">287</span></a> <span class="n">ab</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">kind</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">())</span> -</span><span id="L-288"><a href="#L-288"><span class="linenos">288</span></a> <span class="k">elif</span> <span class="p">(</span><span class="nb">set</span><span class="p">(</span><span class="n">b</span><span class="o">.</span><span class="n">flatten</span><span class="p">())</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">kind</span><span class="p">)</span> <span class="k">else</span> <span class="p">{</span><span class="n">b</span><span class="p">})</span> <span class="o"><</span> <span class="nb">set</span><span class="p">(</span><span class="n">a</span><span class="o">.</span><span class="n">flatten</span><span class="p">()):</span> -</span><span id="L-289"><a href="#L-289"><span class="linenos">289</span></a> <span class="n">a</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">kind</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span> -</span><span id="L-290"><a href="#L-290"><span class="linenos">290</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">kind</span><span class="p">):</span> -</span><span id="L-291"><a href="#L-291"><span class="linenos">291</span></a> <span class="c1"># eliminate</span> -</span><span id="L-292"><a href="#L-292"><span class="linenos">292</span></a> <span class="n">rhs</span> <span class="o">=</span> <span class="n">b</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">()</span> -</span><span id="L-293"><a href="#L-293"><span class="linenos">293</span></a> <span class="n">ba</span><span class="p">,</span> <span class="n">bb</span> <span class="o">=</span> <span class="n">rhs</span> -</span><span id="L-294"><a href="#L-294"><span class="linenos">294</span></a> -</span><span id="L-295"><a href="#L-295"><span class="linenos">295</span></a> <span class="k">if</span> <span class="n">aa</span> <span class="ow">in</span> <span class="n">rhs</span> <span class="ow">and</span> <span class="p">(</span><span class="n">is_complement</span><span class="p">(</span><span class="n">ab</span><span class="p">,</span> <span class="n">ba</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">ab</span><span class="p">,</span> <span class="n">bb</span><span class="p">)):</span> -</span><span id="L-296"><a href="#L-296"><span class="linenos">296</span></a> <span class="n">a</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">aa</span><span class="p">)</span> -</span><span id="L-297"><a href="#L-297"><span class="linenos">297</span></a> <span class="n">b</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">aa</span><span class="p">)</span> -</span><span id="L-298"><a href="#L-298"><span class="linenos">298</span></a> <span class="k">elif</span> <span class="n">ab</span> <span class="ow">in</span> <span class="n">rhs</span> <span class="ow">and</span> <span class="p">(</span><span class="n">is_complement</span><span class="p">(</span><span class="n">aa</span><span class="p">,</span> <span class="n">ba</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">aa</span><span class="p">,</span> <span class="n">bb</span><span class="p">)):</span> -</span><span id="L-299"><a href="#L-299"><span class="linenos">299</span></a> <span class="n">a</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">ab</span><span class="p">)</span> -</span><span id="L-300"><a href="#L-300"><span class="linenos">300</span></a> <span class="n">b</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">ab</span><span class="p">)</span> -</span><span id="L-301"><a href="#L-301"><span class="linenos">301</span></a> -</span><span id="L-302"><a href="#L-302"><span class="linenos">302</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-303"><a href="#L-303"><span class="linenos">303</span></a> +</span><span id="L-265"><a href="#L-265"><span class="linenos">265</span></a> +</span><span id="L-266"><a href="#L-266"><span class="linenos">266</span></a><span class="k">def</span> <span class="nf">absorb_and_eliminate</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> +</span><span id="L-267"><a href="#L-267"><span class="linenos">267</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-268"><a href="#L-268"><span class="linenos">268</span></a><span class="sd"> absorption:</span> +</span><span id="L-269"><a href="#L-269"><span class="linenos">269</span></a><span class="sd"> A AND (A OR B) -> A</span> +</span><span id="L-270"><a href="#L-270"><span class="linenos">270</span></a><span class="sd"> A OR (A AND B) -> A</span> +</span><span id="L-271"><a href="#L-271"><span class="linenos">271</span></a><span class="sd"> A AND (NOT A OR B) -> A AND B</span> +</span><span id="L-272"><a href="#L-272"><span class="linenos">272</span></a><span class="sd"> A OR (NOT A AND B) -> A OR B</span> +</span><span id="L-273"><a href="#L-273"><span class="linenos">273</span></a><span class="sd"> elimination:</span> +</span><span id="L-274"><a href="#L-274"><span class="linenos">274</span></a><span class="sd"> (A AND B) OR (A AND NOT B) -> A</span> +</span><span id="L-275"><a href="#L-275"><span class="linenos">275</span></a><span class="sd"> (A OR B) AND (A OR NOT B) -> A</span> +</span><span id="L-276"><a href="#L-276"><span class="linenos">276</span></a><span class="sd"> """</span> +</span><span id="L-277"><a href="#L-277"><span class="linenos">277</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="n">root</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">expression</span><span class="o">.</span><span class="n">same_parent</span><span class="p">):</span> +</span><span id="L-278"><a href="#L-278"><span class="linenos">278</span></a> <span class="n">kind</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> +</span><span id="L-279"><a href="#L-279"><span class="linenos">279</span></a> +</span><span id="L-280"><a href="#L-280"><span class="linenos">280</span></a> <span class="k">for</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">permutations</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">(),</span> <span class="mi">2</span><span class="p">):</span> +</span><span id="L-281"><a href="#L-281"><span class="linenos">281</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">kind</span><span class="p">):</span> +</span><span id="L-282"><a href="#L-282"><span class="linenos">282</span></a> <span class="n">aa</span><span class="p">,</span> <span class="n">ab</span> <span class="o">=</span> <span class="n">a</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">()</span> +</span><span id="L-283"><a href="#L-283"><span class="linenos">283</span></a> +</span><span id="L-284"><a href="#L-284"><span class="linenos">284</span></a> <span class="c1"># absorb</span> +</span><span id="L-285"><a href="#L-285"><span class="linenos">285</span></a> <span class="k">if</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">aa</span><span class="p">):</span> +</span><span id="L-286"><a href="#L-286"><span class="linenos">286</span></a> <span class="n">aa</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">kind</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">())</span> +</span><span id="L-287"><a href="#L-287"><span class="linenos">287</span></a> <span class="k">elif</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">ab</span><span class="p">):</span> +</span><span id="L-288"><a href="#L-288"><span class="linenos">288</span></a> <span class="n">ab</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">kind</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">())</span> +</span><span id="L-289"><a href="#L-289"><span class="linenos">289</span></a> <span class="k">elif</span> <span class="p">(</span><span class="nb">set</span><span class="p">(</span><span class="n">b</span><span class="o">.</span><span class="n">flatten</span><span class="p">())</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">kind</span><span class="p">)</span> <span class="k">else</span> <span class="p">{</span><span class="n">b</span><span class="p">})</span> <span class="o"><</span> <span class="nb">set</span><span class="p">(</span><span class="n">a</span><span class="o">.</span><span class="n">flatten</span><span class="p">()):</span> +</span><span id="L-290"><a href="#L-290"><span class="linenos">290</span></a> <span class="n">a</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">kind</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span> +</span><span id="L-291"><a href="#L-291"><span class="linenos">291</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">kind</span><span class="p">):</span> +</span><span id="L-292"><a href="#L-292"><span class="linenos">292</span></a> <span class="c1"># eliminate</span> +</span><span id="L-293"><a href="#L-293"><span class="linenos">293</span></a> <span class="n">rhs</span> <span class="o">=</span> <span class="n">b</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">()</span> +</span><span id="L-294"><a href="#L-294"><span class="linenos">294</span></a> <span class="n">ba</span><span class="p">,</span> <span class="n">bb</span> <span class="o">=</span> <span class="n">rhs</span> +</span><span id="L-295"><a href="#L-295"><span class="linenos">295</span></a> +</span><span id="L-296"><a href="#L-296"><span class="linenos">296</span></a> <span class="k">if</span> <span class="n">aa</span> <span class="ow">in</span> <span class="n">rhs</span> <span class="ow">and</span> <span class="p">(</span><span class="n">is_complement</span><span class="p">(</span><span class="n">ab</span><span class="p">,</span> <span class="n">ba</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">ab</span><span class="p">,</span> <span class="n">bb</span><span class="p">)):</span> +</span><span id="L-297"><a href="#L-297"><span class="linenos">297</span></a> <span class="n">a</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">aa</span><span class="p">)</span> +</span><span id="L-298"><a href="#L-298"><span class="linenos">298</span></a> <span class="n">b</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">aa</span><span class="p">)</span> +</span><span id="L-299"><a href="#L-299"><span class="linenos">299</span></a> <span class="k">elif</span> <span class="n">ab</span> <span class="ow">in</span> <span class="n">rhs</span> <span class="ow">and</span> <span class="p">(</span><span class="n">is_complement</span><span class="p">(</span><span class="n">aa</span><span class="p">,</span> <span class="n">ba</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">aa</span><span class="p">,</span> <span class="n">bb</span><span class="p">)):</span> +</span><span id="L-300"><a href="#L-300"><span class="linenos">300</span></a> <span class="n">a</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">ab</span><span class="p">)</span> +</span><span id="L-301"><a href="#L-301"><span class="linenos">301</span></a> <span class="n">b</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">ab</span><span class="p">)</span> +</span><span id="L-302"><a href="#L-302"><span class="linenos">302</span></a> +</span><span id="L-303"><a href="#L-303"><span class="linenos">303</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="L-304"><a href="#L-304"><span class="linenos">304</span></a> -</span><span id="L-305"><a href="#L-305"><span class="linenos">305</span></a><span class="k">def</span> <span class="nf">simplify_literals</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-306"><a href="#L-306"><span class="linenos">306</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">):</span> -</span><span id="L-307"><a href="#L-307"><span class="linenos">307</span></a> <span class="k">return</span> <span class="n">_flat_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">_simplify_binary</span><span class="p">)</span> -</span><span id="L-308"><a href="#L-308"><span class="linenos">308</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Neg</span><span class="p">):</span> -</span><span id="L-309"><a href="#L-309"><span class="linenos">309</span></a> <span class="n">this</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span> -</span><span id="L-310"><a href="#L-310"><span class="linenos">310</span></a> <span class="k">if</span> <span class="n">this</span><span class="o">.</span><span class="n">is_number</span><span class="p">:</span> -</span><span id="L-311"><a href="#L-311"><span class="linenos">311</span></a> <span class="n">value</span> <span class="o">=</span> <span class="n">this</span><span class="o">.</span><span class="n">name</span> -</span><span id="L-312"><a href="#L-312"><span class="linenos">312</span></a> <span class="k">if</span> <span class="n">value</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">==</span> <span class="s2">"-"</span><span class="p">:</span> -</span><span id="L-313"><a href="#L-313"><span class="linenos">313</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">value</span><span class="p">[</span><span class="mi">1</span><span class="p">:])</span> -</span><span id="L-314"><a href="#L-314"><span class="linenos">314</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="sa">f</span><span class="s2">"-</span><span class="si">{</span><span class="n">value</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="L-315"><a href="#L-315"><span class="linenos">315</span></a> -</span><span id="L-316"><a href="#L-316"><span class="linenos">316</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-317"><a href="#L-317"><span class="linenos">317</span></a> +</span><span id="L-305"><a href="#L-305"><span class="linenos">305</span></a> +</span><span id="L-306"><a href="#L-306"><span class="linenos">306</span></a><span class="k">def</span> <span class="nf">simplify_literals</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> +</span><span id="L-307"><a href="#L-307"><span class="linenos">307</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> +</span><span id="L-308"><a href="#L-308"><span class="linenos">308</span></a> <span class="k">return</span> <span class="n">_flat_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">_simplify_binary</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span> +</span><span id="L-309"><a href="#L-309"><span class="linenos">309</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Neg</span><span class="p">):</span> +</span><span id="L-310"><a href="#L-310"><span class="linenos">310</span></a> <span class="n">this</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span> +</span><span id="L-311"><a href="#L-311"><span class="linenos">311</span></a> <span class="k">if</span> <span class="n">this</span><span class="o">.</span><span class="n">is_number</span><span class="p">:</span> +</span><span id="L-312"><a href="#L-312"><span class="linenos">312</span></a> <span class="n">value</span> <span class="o">=</span> <span class="n">this</span><span class="o">.</span><span class="n">name</span> +</span><span id="L-313"><a href="#L-313"><span class="linenos">313</span></a> <span class="k">if</span> <span class="n">value</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">==</span> <span class="s2">"-"</span><span class="p">:</span> +</span><span id="L-314"><a href="#L-314"><span class="linenos">314</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">value</span><span class="p">[</span><span class="mi">1</span><span class="p">:])</span> +</span><span id="L-315"><a href="#L-315"><span class="linenos">315</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="sa">f</span><span class="s2">"-</span><span class="si">{</span><span class="n">value</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="L-316"><a href="#L-316"><span class="linenos">316</span></a> +</span><span id="L-317"><a href="#L-317"><span class="linenos">317</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="L-318"><a href="#L-318"><span class="linenos">318</span></a> -</span><span id="L-319"><a href="#L-319"><span class="linenos">319</span></a><span class="k">def</span> <span class="nf">_simplify_binary</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> -</span><span id="L-320"><a href="#L-320"><span class="linenos">320</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Is</span><span class="p">):</span> -</span><span id="L-321"><a href="#L-321"><span class="linenos">321</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">):</span> -</span><span id="L-322"><a href="#L-322"><span class="linenos">322</span></a> <span class="n">c</span> <span class="o">=</span> <span class="n">b</span><span class="o">.</span><span class="n">this</span> -</span><span id="L-323"><a href="#L-323"><span class="linenos">323</span></a> <span class="n">not_</span> <span class="o">=</span> <span class="kc">True</span> -</span><span id="L-324"><a href="#L-324"><span class="linenos">324</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-325"><a href="#L-325"><span class="linenos">325</span></a> <span class="n">c</span> <span class="o">=</span> <span class="n">b</span> -</span><span id="L-326"><a href="#L-326"><span class="linenos">326</span></a> <span class="n">not_</span> <span class="o">=</span> <span class="kc">False</span> -</span><span id="L-327"><a href="#L-327"><span class="linenos">327</span></a> -</span><span id="L-328"><a href="#L-328"><span class="linenos">328</span></a> <span class="k">if</span> <span class="n">c</span> <span class="o">==</span> <span class="n">NULL</span><span class="p">:</span> -</span><span id="L-329"><a href="#L-329"><span class="linenos">329</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">):</span> -</span><span id="L-330"><a href="#L-330"><span class="linenos">330</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">not_</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> -</span><span id="L-331"><a href="#L-331"><span class="linenos">331</span></a> <span class="k">if</span> <span class="n">a</span> <span class="o">==</span> <span class="n">NULL</span><span class="p">:</span> -</span><span id="L-332"><a href="#L-332"><span class="linenos">332</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">not_</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> -</span><span id="L-333"><a href="#L-333"><span class="linenos">333</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">NullSafeEQ</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">NullSafeNEQ</span><span class="p">)):</span> -</span><span id="L-334"><a href="#L-334"><span class="linenos">334</span></a> <span class="k">return</span> <span class="kc">None</span> -</span><span id="L-335"><a href="#L-335"><span class="linenos">335</span></a> <span class="k">elif</span> <span class="n">NULL</span> <span class="ow">in</span> <span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> -</span><span id="L-336"><a href="#L-336"><span class="linenos">336</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> -</span><span id="L-337"><a href="#L-337"><span class="linenos">337</span></a> -</span><span id="L-338"><a href="#L-338"><span class="linenos">338</span></a> <span class="k">if</span> <span class="n">a</span><span class="o">.</span><span class="n">is_number</span> <span class="ow">and</span> <span class="n">b</span><span class="o">.</span><span class="n">is_number</span><span class="p">:</span> -</span><span id="L-339"><a href="#L-339"><span class="linenos">339</span></a> <span class="n">a</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">a</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> <span class="k">if</span> <span class="n">a</span><span class="o">.</span><span class="n">is_int</span> <span class="k">else</span> <span class="n">Decimal</span><span class="p">(</span><span class="n">a</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> -</span><span id="L-340"><a href="#L-340"><span class="linenos">340</span></a> <span class="n">b</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">b</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> <span class="k">if</span> <span class="n">b</span><span class="o">.</span><span class="n">is_int</span> <span class="k">else</span> <span class="n">Decimal</span><span class="p">(</span><span class="n">b</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> -</span><span id="L-341"><a href="#L-341"><span class="linenos">341</span></a> -</span><span id="L-342"><a href="#L-342"><span class="linenos">342</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Add</span><span class="p">):</span> -</span><span id="L-343"><a href="#L-343"><span class="linenos">343</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">a</span> <span class="o">+</span> <span class="n">b</span><span class="p">)</span> -</span><span id="L-344"><a href="#L-344"><span class="linenos">344</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Sub</span><span class="p">):</span> -</span><span id="L-345"><a href="#L-345"><span class="linenos">345</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">a</span> <span class="o">-</span> <span class="n">b</span><span class="p">)</span> -</span><span id="L-346"><a href="#L-346"><span class="linenos">346</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Mul</span><span class="p">):</span> -</span><span id="L-347"><a href="#L-347"><span class="linenos">347</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">a</span> <span class="o">*</span> <span class="n">b</span><span class="p">)</span> -</span><span id="L-348"><a href="#L-348"><span class="linenos">348</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Div</span><span class="p">):</span> -</span><span id="L-349"><a href="#L-349"><span class="linenos">349</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="nb">int</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="nb">int</span><span class="p">):</span> -</span><span id="L-350"><a href="#L-350"><span class="linenos">350</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">a</span> <span class="o">//</span> <span class="n">b</span><span class="p">)</span> -</span><span id="L-351"><a href="#L-351"><span class="linenos">351</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">a</span> <span class="o">/</span> <span class="n">b</span><span class="p">)</span> -</span><span id="L-352"><a href="#L-352"><span class="linenos">352</span></a> -</span><span id="L-353"><a href="#L-353"><span class="linenos">353</span></a> <span class="n">boolean</span> <span class="o">=</span> <span class="n">eval_boolean</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">)</span> -</span><span id="L-354"><a href="#L-354"><span class="linenos">354</span></a> -</span><span id="L-355"><a href="#L-355"><span class="linenos">355</span></a> <span class="k">if</span> <span class="n">boolean</span><span class="p">:</span> -</span><span id="L-356"><a href="#L-356"><span class="linenos">356</span></a> <span class="k">return</span> <span class="n">boolean</span> -</span><span id="L-357"><a href="#L-357"><span class="linenos">357</span></a> <span class="k">elif</span> <span class="n">a</span><span class="o">.</span><span class="n">is_string</span> <span class="ow">and</span> <span class="n">b</span><span class="o">.</span><span class="n">is_string</span><span class="p">:</span> -</span><span id="L-358"><a href="#L-358"><span class="linenos">358</span></a> <span class="n">boolean</span> <span class="o">=</span> <span class="n">eval_boolean</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">)</span> -</span><span id="L-359"><a href="#L-359"><span class="linenos">359</span></a> -</span><span id="L-360"><a href="#L-360"><span class="linenos">360</span></a> <span class="k">if</span> <span class="n">boolean</span><span class="p">:</span> -</span><span id="L-361"><a href="#L-361"><span class="linenos">361</span></a> <span class="k">return</span> <span class="n">boolean</span> -</span><span id="L-362"><a href="#L-362"><span class="linenos">362</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Cast</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Interval</span><span class="p">):</span> -</span><span id="L-363"><a href="#L-363"><span class="linenos">363</span></a> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="o">=</span> <span class="n">extract_date</span><span class="p">(</span><span class="n">a</span><span class="p">),</span> <span class="n">extract_interval</span><span class="p">(</span><span class="n">b</span><span class="p">)</span> -</span><span id="L-364"><a href="#L-364"><span class="linenos">364</span></a> <span class="k">if</span> <span class="n">a</span> <span class="ow">and</span> <span class="n">b</span><span class="p">:</span> -</span><span id="L-365"><a href="#L-365"><span class="linenos">365</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Add</span><span class="p">):</span> -</span><span id="L-366"><a href="#L-366"><span class="linenos">366</span></a> <span class="k">return</span> <span class="n">date_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">+</span> <span class="n">b</span><span class="p">)</span> -</span><span id="L-367"><a href="#L-367"><span class="linenos">367</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Sub</span><span class="p">):</span> -</span><span id="L-368"><a href="#L-368"><span class="linenos">368</span></a> <span class="k">return</span> <span class="n">date_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">-</span> <span class="n">b</span><span class="p">)</span> -</span><span id="L-369"><a href="#L-369"><span class="linenos">369</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Interval</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Cast</span><span class="p">):</span> -</span><span id="L-370"><a href="#L-370"><span class="linenos">370</span></a> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="o">=</span> <span class="n">extract_interval</span><span class="p">(</span><span class="n">a</span><span class="p">),</span> <span class="n">extract_date</span><span class="p">(</span><span class="n">b</span><span class="p">)</span> -</span><span id="L-371"><a href="#L-371"><span class="linenos">371</span></a> <span class="c1"># you cannot subtract a date from an interval</span> -</span><span id="L-372"><a href="#L-372"><span class="linenos">372</span></a> <span class="k">if</span> <span class="n">a</span> <span class="ow">and</span> <span class="n">b</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Add</span><span class="p">):</span> -</span><span id="L-373"><a href="#L-373"><span class="linenos">373</span></a> <span class="k">return</span> <span class="n">date_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">+</span> <span class="n">b</span><span class="p">)</span> -</span><span id="L-374"><a href="#L-374"><span class="linenos">374</span></a> -</span><span id="L-375"><a href="#L-375"><span class="linenos">375</span></a> <span class="k">return</span> <span class="kc">None</span> -</span><span id="L-376"><a href="#L-376"><span class="linenos">376</span></a> +</span><span id="L-319"><a href="#L-319"><span class="linenos">319</span></a> +</span><span id="L-320"><a href="#L-320"><span class="linenos">320</span></a><span class="k">def</span> <span class="nf">_simplify_binary</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> +</span><span id="L-321"><a href="#L-321"><span class="linenos">321</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Is</span><span class="p">):</span> +</span><span id="L-322"><a href="#L-322"><span class="linenos">322</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">):</span> +</span><span id="L-323"><a href="#L-323"><span class="linenos">323</span></a> <span class="n">c</span> <span class="o">=</span> <span class="n">b</span><span class="o">.</span><span class="n">this</span> +</span><span id="L-324"><a href="#L-324"><span class="linenos">324</span></a> <span class="n">not_</span> <span class="o">=</span> <span class="kc">True</span> +</span><span id="L-325"><a href="#L-325"><span class="linenos">325</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-326"><a href="#L-326"><span class="linenos">326</span></a> <span class="n">c</span> <span class="o">=</span> <span class="n">b</span> +</span><span id="L-327"><a href="#L-327"><span class="linenos">327</span></a> <span class="n">not_</span> <span class="o">=</span> <span class="kc">False</span> +</span><span id="L-328"><a href="#L-328"><span class="linenos">328</span></a> +</span><span id="L-329"><a href="#L-329"><span class="linenos">329</span></a> <span class="k">if</span> <span class="n">is_null</span><span class="p">(</span><span class="n">c</span><span class="p">):</span> +</span><span id="L-330"><a href="#L-330"><span class="linenos">330</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">):</span> +</span><span id="L-331"><a href="#L-331"><span class="linenos">331</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">not_</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> +</span><span id="L-332"><a href="#L-332"><span class="linenos">332</span></a> <span class="k">if</span> <span class="n">is_null</span><span class="p">(</span><span class="n">a</span><span class="p">):</span> +</span><span id="L-333"><a href="#L-333"><span class="linenos">333</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">not_</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> +</span><span id="L-334"><a href="#L-334"><span class="linenos">334</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">NullSafeEQ</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">NullSafeNEQ</span><span class="p">)):</span> +</span><span id="L-335"><a href="#L-335"><span class="linenos">335</span></a> <span class="k">return</span> <span class="kc">None</span> +</span><span id="L-336"><a href="#L-336"><span class="linenos">336</span></a> <span class="k">elif</span> <span class="n">is_null</span><span class="p">(</span><span class="n">a</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_null</span><span class="p">(</span><span class="n">b</span><span class="p">):</span> +</span><span id="L-337"><a href="#L-337"><span class="linenos">337</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> +</span><span id="L-338"><a href="#L-338"><span class="linenos">338</span></a> +</span><span id="L-339"><a href="#L-339"><span class="linenos">339</span></a> <span class="k">if</span> <span class="n">a</span><span class="o">.</span><span class="n">is_number</span> <span class="ow">and</span> <span class="n">b</span><span class="o">.</span><span class="n">is_number</span><span class="p">:</span> +</span><span id="L-340"><a href="#L-340"><span class="linenos">340</span></a> <span class="n">a</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">a</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> <span class="k">if</span> <span class="n">a</span><span class="o">.</span><span class="n">is_int</span> <span class="k">else</span> <span class="n">Decimal</span><span class="p">(</span><span class="n">a</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-341"><a href="#L-341"><span class="linenos">341</span></a> <span class="n">b</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">b</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> <span class="k">if</span> <span class="n">b</span><span class="o">.</span><span class="n">is_int</span> <span class="k">else</span> <span class="n">Decimal</span><span class="p">(</span><span class="n">b</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-342"><a href="#L-342"><span class="linenos">342</span></a> +</span><span id="L-343"><a href="#L-343"><span class="linenos">343</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Add</span><span class="p">):</span> +</span><span id="L-344"><a href="#L-344"><span class="linenos">344</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">a</span> <span class="o">+</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-345"><a href="#L-345"><span class="linenos">345</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Sub</span><span class="p">):</span> +</span><span id="L-346"><a href="#L-346"><span class="linenos">346</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">a</span> <span class="o">-</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-347"><a href="#L-347"><span class="linenos">347</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Mul</span><span class="p">):</span> +</span><span id="L-348"><a href="#L-348"><span class="linenos">348</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">a</span> <span class="o">*</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-349"><a href="#L-349"><span class="linenos">349</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Div</span><span class="p">):</span> +</span><span id="L-350"><a href="#L-350"><span class="linenos">350</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="nb">int</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="nb">int</span><span class="p">):</span> +</span><span id="L-351"><a href="#L-351"><span class="linenos">351</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">a</span> <span class="o">//</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-352"><a href="#L-352"><span class="linenos">352</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">a</span> <span class="o">/</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-353"><a href="#L-353"><span class="linenos">353</span></a> +</span><span id="L-354"><a href="#L-354"><span class="linenos">354</span></a> <span class="n">boolean</span> <span class="o">=</span> <span class="n">eval_boolean</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-355"><a href="#L-355"><span class="linenos">355</span></a> +</span><span id="L-356"><a href="#L-356"><span class="linenos">356</span></a> <span class="k">if</span> <span class="n">boolean</span><span class="p">:</span> +</span><span id="L-357"><a href="#L-357"><span class="linenos">357</span></a> <span class="k">return</span> <span class="n">boolean</span> +</span><span id="L-358"><a href="#L-358"><span class="linenos">358</span></a> <span class="k">elif</span> <span class="n">a</span><span class="o">.</span><span class="n">is_string</span> <span class="ow">and</span> <span class="n">b</span><span class="o">.</span><span class="n">is_string</span><span class="p">:</span> +</span><span id="L-359"><a href="#L-359"><span class="linenos">359</span></a> <span class="n">boolean</span> <span class="o">=</span> <span class="n">eval_boolean</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-360"><a href="#L-360"><span class="linenos">360</span></a> +</span><span id="L-361"><a href="#L-361"><span class="linenos">361</span></a> <span class="k">if</span> <span class="n">boolean</span><span class="p">:</span> +</span><span id="L-362"><a href="#L-362"><span class="linenos">362</span></a> <span class="k">return</span> <span class="n">boolean</span> +</span><span id="L-363"><a href="#L-363"><span class="linenos">363</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Cast</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Interval</span><span class="p">):</span> +</span><span id="L-364"><a href="#L-364"><span class="linenos">364</span></a> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="o">=</span> <span class="n">extract_date</span><span class="p">(</span><span class="n">a</span><span class="p">),</span> <span class="n">extract_interval</span><span class="p">(</span><span class="n">b</span><span class="p">)</span> +</span><span id="L-365"><a href="#L-365"><span class="linenos">365</span></a> <span class="k">if</span> <span class="n">a</span> <span class="ow">and</span> <span class="n">b</span><span class="p">:</span> +</span><span id="L-366"><a href="#L-366"><span class="linenos">366</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Add</span><span class="p">):</span> +</span><span id="L-367"><a href="#L-367"><span class="linenos">367</span></a> <span class="k">return</span> <span class="n">date_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">+</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-368"><a href="#L-368"><span class="linenos">368</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Sub</span><span class="p">):</span> +</span><span id="L-369"><a href="#L-369"><span class="linenos">369</span></a> <span class="k">return</span> <span class="n">date_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">-</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-370"><a href="#L-370"><span class="linenos">370</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Interval</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Cast</span><span class="p">):</span> +</span><span id="L-371"><a href="#L-371"><span class="linenos">371</span></a> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="o">=</span> <span class="n">extract_interval</span><span class="p">(</span><span class="n">a</span><span class="p">),</span> <span class="n">extract_date</span><span class="p">(</span><span class="n">b</span><span class="p">)</span> +</span><span id="L-372"><a href="#L-372"><span class="linenos">372</span></a> <span class="c1"># you cannot subtract a date from an interval</span> +</span><span id="L-373"><a href="#L-373"><span class="linenos">373</span></a> <span class="k">if</span> <span class="n">a</span> <span class="ow">and</span> <span class="n">b</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Add</span><span class="p">):</span> +</span><span id="L-374"><a href="#L-374"><span class="linenos">374</span></a> <span class="k">return</span> <span class="n">date_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">+</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-375"><a href="#L-375"><span class="linenos">375</span></a> +</span><span id="L-376"><a href="#L-376"><span class="linenos">376</span></a> <span class="k">return</span> <span class="kc">None</span> </span><span id="L-377"><a href="#L-377"><span class="linenos">377</span></a> -</span><span id="L-378"><a href="#L-378"><span class="linenos">378</span></a><span class="k">def</span> <span class="nf">simplify_parens</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-379"><a href="#L-379"><span class="linenos">379</span></a> <span class="k">if</span> <span class="p">(</span> -</span><span id="L-380"><a href="#L-380"><span class="linenos">380</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Paren</span><span class="p">)</span> -</span><span id="L-381"><a href="#L-381"><span class="linenos">381</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">)</span> -</span><span id="L-382"><a href="#L-382"><span class="linenos">382</span></a> <span class="ow">and</span> <span class="p">(</span> -</span><span id="L-383"><a href="#L-383"><span class="linenos">383</span></a> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">))</span> -</span><span id="L-384"><a href="#L-384"><span class="linenos">384</span></a> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Is</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Like</span><span class="p">))</span> -</span><span id="L-385"><a href="#L-385"><span class="linenos">385</span></a> <span class="ow">or</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">)</span> -</span><span id="L-386"><a href="#L-386"><span class="linenos">386</span></a> <span class="p">)</span> -</span><span id="L-387"><a href="#L-387"><span class="linenos">387</span></a> <span class="p">):</span> -</span><span id="L-388"><a href="#L-388"><span class="linenos">388</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span> -</span><span id="L-389"><a href="#L-389"><span class="linenos">389</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-390"><a href="#L-390"><span class="linenos">390</span></a> +</span><span id="L-378"><a href="#L-378"><span class="linenos">378</span></a> +</span><span id="L-379"><a href="#L-379"><span class="linenos">379</span></a><span class="k">def</span> <span class="nf">simplify_parens</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-380"><a href="#L-380"><span class="linenos">380</span></a> <span class="k">if</span> <span class="p">(</span> +</span><span id="L-381"><a href="#L-381"><span class="linenos">381</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Paren</span><span class="p">)</span> +</span><span id="L-382"><a href="#L-382"><span class="linenos">382</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">)</span> +</span><span id="L-383"><a href="#L-383"><span class="linenos">383</span></a> <span class="ow">and</span> <span class="p">(</span> +</span><span id="L-384"><a href="#L-384"><span class="linenos">384</span></a> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">))</span> +</span><span id="L-385"><a href="#L-385"><span class="linenos">385</span></a> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Predicate</span><span class="p">)</span> +</span><span id="L-386"><a href="#L-386"><span class="linenos">386</span></a> <span class="ow">or</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">)</span> +</span><span id="L-387"><a href="#L-387"><span class="linenos">387</span></a> <span class="p">)</span> +</span><span id="L-388"><a href="#L-388"><span class="linenos">388</span></a> <span class="p">):</span> +</span><span id="L-389"><a href="#L-389"><span class="linenos">389</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span> +</span><span id="L-390"><a href="#L-390"><span class="linenos">390</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="L-391"><a href="#L-391"><span class="linenos">391</span></a> -</span><span id="L-392"><a href="#L-392"><span class="linenos">392</span></a><span class="k">def</span> <span class="nf">remove_where_true</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-393"><a href="#L-393"><span class="linenos">393</span></a> <span class="k">for</span> <span class="n">where</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Where</span><span class="p">):</span> -</span><span id="L-394"><a href="#L-394"><span class="linenos">394</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">where</span><span class="o">.</span><span class="n">this</span><span class="p">):</span> -</span><span id="L-395"><a href="#L-395"><span class="linenos">395</span></a> <span class="n">where</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"where"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> -</span><span id="L-396"><a href="#L-396"><span class="linenos">396</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">):</span> -</span><span id="L-397"><a href="#L-397"><span class="linenos">397</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on"</span><span class="p">)):</span> -</span><span id="L-398"><a href="#L-398"><span class="linenos">398</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"kind"</span><span class="p">,</span> <span class="s2">"CROSS"</span><span class="p">)</span> -</span><span id="L-399"><a href="#L-399"><span class="linenos">399</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"on"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> -</span><span id="L-400"><a href="#L-400"><span class="linenos">400</span></a> +</span><span id="L-392"><a href="#L-392"><span class="linenos">392</span></a> +</span><span id="L-393"><a href="#L-393"><span class="linenos">393</span></a><span class="k">def</span> <span class="nf">remove_where_true</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-394"><a href="#L-394"><span class="linenos">394</span></a> <span class="k">for</span> <span class="n">where</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Where</span><span class="p">):</span> +</span><span id="L-395"><a href="#L-395"><span class="linenos">395</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">where</span><span class="o">.</span><span class="n">this</span><span class="p">):</span> +</span><span id="L-396"><a href="#L-396"><span class="linenos">396</span></a> <span class="n">where</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"where"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> +</span><span id="L-397"><a href="#L-397"><span class="linenos">397</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">):</span> +</span><span id="L-398"><a href="#L-398"><span class="linenos">398</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on"</span><span class="p">)):</span> +</span><span id="L-399"><a href="#L-399"><span class="linenos">399</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"kind"</span><span class="p">,</span> <span class="s2">"CROSS"</span><span class="p">)</span> +</span><span id="L-400"><a href="#L-400"><span class="linenos">400</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"on"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> </span><span id="L-401"><a href="#L-401"><span class="linenos">401</span></a> -</span><span id="L-402"><a href="#L-402"><span class="linenos">402</span></a><span class="k">def</span> <span class="nf">always_true</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-403"><a href="#L-403"><span class="linenos">403</span></a> <span class="k">return</span> <span class="n">expression</span> <span class="o">==</span> <span class="n">TRUE</span> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">)</span> -</span><span id="L-404"><a href="#L-404"><span class="linenos">404</span></a> -</span><span id="L-405"><a href="#L-405"><span class="linenos">405</span></a> -</span><span id="L-406"><a href="#L-406"><span class="linenos">406</span></a><span class="k">def</span> <span class="nf">is_complement</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> -</span><span id="L-407"><a href="#L-407"><span class="linenos">407</span></a> <span class="k">return</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">)</span> <span class="ow">and</span> <span class="n">b</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">a</span> +</span><span id="L-402"><a href="#L-402"><span class="linenos">402</span></a> +</span><span id="L-403"><a href="#L-403"><span class="linenos">403</span></a><span class="k">def</span> <span class="nf">always_true</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-404"><a href="#L-404"><span class="linenos">404</span></a> <span class="k">return</span> <span class="p">(</span><span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Boolean</span><span class="p">)</span> <span class="ow">and</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span> +</span><span id="L-405"><a href="#L-405"><span class="linenos">405</span></a> <span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span> +</span><span id="L-406"><a href="#L-406"><span class="linenos">406</span></a> <span class="p">)</span> +</span><span id="L-407"><a href="#L-407"><span class="linenos">407</span></a> </span><span id="L-408"><a href="#L-408"><span class="linenos">408</span></a> -</span><span id="L-409"><a href="#L-409"><span class="linenos">409</span></a> -</span><span id="L-410"><a href="#L-410"><span class="linenos">410</span></a><span class="k">def</span> <span class="nf">eval_boolean</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> -</span><span id="L-411"><a href="#L-411"><span class="linenos">411</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Is</span><span class="p">)):</span> -</span><span id="L-412"><a href="#L-412"><span class="linenos">412</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">==</span> <span class="n">b</span><span class="p">)</span> -</span><span id="L-413"><a href="#L-413"><span class="linenos">413</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">NEQ</span><span class="p">):</span> -</span><span id="L-414"><a href="#L-414"><span class="linenos">414</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">!=</span> <span class="n">b</span><span class="p">)</span> -</span><span id="L-415"><a href="#L-415"><span class="linenos">415</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">):</span> -</span><span id="L-416"><a href="#L-416"><span class="linenos">416</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">></span> <span class="n">b</span><span class="p">)</span> -</span><span id="L-417"><a href="#L-417"><span class="linenos">417</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">):</span> -</span><span id="L-418"><a href="#L-418"><span class="linenos">418</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">>=</span> <span class="n">b</span><span class="p">)</span> -</span><span id="L-419"><a href="#L-419"><span class="linenos">419</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">):</span> -</span><span id="L-420"><a href="#L-420"><span class="linenos">420</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o"><</span> <span class="n">b</span><span class="p">)</span> -</span><span id="L-421"><a href="#L-421"><span class="linenos">421</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">):</span> -</span><span id="L-422"><a href="#L-422"><span class="linenos">422</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o"><=</span> <span class="n">b</span><span class="p">)</span> -</span><span id="L-423"><a href="#L-423"><span class="linenos">423</span></a> <span class="k">return</span> <span class="kc">None</span> -</span><span id="L-424"><a href="#L-424"><span class="linenos">424</span></a> -</span><span id="L-425"><a href="#L-425"><span class="linenos">425</span></a> -</span><span id="L-426"><a href="#L-426"><span class="linenos">426</span></a><span class="k">def</span> <span class="nf">extract_date</span><span class="p">(</span><span class="n">cast</span><span class="p">):</span> -</span><span id="L-427"><a href="#L-427"><span class="linenos">427</span></a> <span class="c1"># The "fromisoformat" conversion could fail if the cast is used on an identifier,</span> -</span><span id="L-428"><a href="#L-428"><span class="linenos">428</span></a> <span class="c1"># so in that case we can't extract the date.</span> -</span><span id="L-429"><a href="#L-429"><span class="linenos">429</span></a> <span class="k">try</span><span class="p">:</span> -</span><span id="L-430"><a href="#L-430"><span class="linenos">430</span></a> <span class="k">if</span> <span class="n">cast</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"to"</span><span class="p">]</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">:</span> -</span><span id="L-431"><a href="#L-431"><span class="linenos">431</span></a> <span class="k">return</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="o">.</span><span class="n">fromisoformat</span><span class="p">(</span><span class="n">cast</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> -</span><span id="L-432"><a href="#L-432"><span class="linenos">432</span></a> <span class="k">if</span> <span class="n">cast</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"to"</span><span class="p">]</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</span><span class="p">:</span> -</span><span id="L-433"><a href="#L-433"><span class="linenos">433</span></a> <span class="k">return</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="o">.</span><span class="n">fromisoformat</span><span class="p">(</span><span class="n">cast</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> -</span><span id="L-434"><a href="#L-434"><span class="linenos">434</span></a> <span class="k">except</span> <span class="ne">ValueError</span><span class="p">:</span> -</span><span id="L-435"><a href="#L-435"><span class="linenos">435</span></a> <span class="k">return</span> <span class="kc">None</span> +</span><span id="L-409"><a href="#L-409"><span class="linenos">409</span></a><span class="k">def</span> <span class="nf">is_complement</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> +</span><span id="L-410"><a href="#L-410"><span class="linenos">410</span></a> <span class="k">return</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">)</span> <span class="ow">and</span> <span class="n">b</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">a</span> +</span><span id="L-411"><a href="#L-411"><span class="linenos">411</span></a> +</span><span id="L-412"><a href="#L-412"><span class="linenos">412</span></a> +</span><span id="L-413"><a href="#L-413"><span class="linenos">413</span></a><span class="k">def</span> <span class="nf">is_false</span><span class="p">(</span><span class="n">a</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bool</span><span class="p">:</span> +</span><span id="L-414"><a href="#L-414"><span class="linenos">414</span></a> <span class="k">return</span> <span class="nb">type</span><span class="p">(</span><span class="n">a</span><span class="p">)</span> <span class="ow">is</span> <span class="n">exp</span><span class="o">.</span><span class="n">Boolean</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">a</span><span class="o">.</span><span class="n">this</span> +</span><span id="L-415"><a href="#L-415"><span class="linenos">415</span></a> +</span><span id="L-416"><a href="#L-416"><span class="linenos">416</span></a> +</span><span id="L-417"><a href="#L-417"><span class="linenos">417</span></a><span class="k">def</span> <span class="nf">is_null</span><span class="p">(</span><span class="n">a</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bool</span><span class="p">:</span> +</span><span id="L-418"><a href="#L-418"><span class="linenos">418</span></a> <span class="k">return</span> <span class="nb">type</span><span class="p">(</span><span class="n">a</span><span class="p">)</span> <span class="ow">is</span> <span class="n">exp</span><span class="o">.</span><span class="n">Null</span> +</span><span id="L-419"><a href="#L-419"><span class="linenos">419</span></a> +</span><span id="L-420"><a href="#L-420"><span class="linenos">420</span></a> +</span><span id="L-421"><a href="#L-421"><span class="linenos">421</span></a><span class="k">def</span> <span class="nf">eval_boolean</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> +</span><span id="L-422"><a href="#L-422"><span class="linenos">422</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Is</span><span class="p">)):</span> +</span><span id="L-423"><a href="#L-423"><span class="linenos">423</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">==</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-424"><a href="#L-424"><span class="linenos">424</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">NEQ</span><span class="p">):</span> +</span><span id="L-425"><a href="#L-425"><span class="linenos">425</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">!=</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-426"><a href="#L-426"><span class="linenos">426</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">):</span> +</span><span id="L-427"><a href="#L-427"><span class="linenos">427</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">></span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-428"><a href="#L-428"><span class="linenos">428</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">):</span> +</span><span id="L-429"><a href="#L-429"><span class="linenos">429</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">>=</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-430"><a href="#L-430"><span class="linenos">430</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">):</span> +</span><span id="L-431"><a href="#L-431"><span class="linenos">431</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o"><</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-432"><a href="#L-432"><span class="linenos">432</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">):</span> +</span><span id="L-433"><a href="#L-433"><span class="linenos">433</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o"><=</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-434"><a href="#L-434"><span class="linenos">434</span></a> <span class="k">return</span> <span class="kc">None</span> +</span><span id="L-435"><a href="#L-435"><span class="linenos">435</span></a> </span><span id="L-436"><a href="#L-436"><span class="linenos">436</span></a> -</span><span id="L-437"><a href="#L-437"><span class="linenos">437</span></a> -</span><span id="L-438"><a href="#L-438"><span class="linenos">438</span></a><span class="k">def</span> <span class="nf">extract_interval</span><span class="p">(</span><span class="n">interval</span><span class="p">):</span> -</span><span id="L-439"><a href="#L-439"><span class="linenos">439</span></a> <span class="k">try</span><span class="p">:</span> -</span><span id="L-440"><a href="#L-440"><span class="linenos">440</span></a> <span class="kn">from</span> <span class="nn">dateutil.relativedelta</span> <span class="kn">import</span> <span class="n">relativedelta</span> <span class="c1"># type: ignore</span> -</span><span id="L-441"><a href="#L-441"><span class="linenos">441</span></a> <span class="k">except</span> <span class="ne">ModuleNotFoundError</span><span class="p">:</span> -</span><span id="L-442"><a href="#L-442"><span class="linenos">442</span></a> <span class="k">return</span> <span class="kc">None</span> -</span><span id="L-443"><a href="#L-443"><span class="linenos">443</span></a> -</span><span id="L-444"><a href="#L-444"><span class="linenos">444</span></a> <span class="n">n</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">interval</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> -</span><span id="L-445"><a href="#L-445"><span class="linenos">445</span></a> <span class="n">unit</span> <span class="o">=</span> <span class="n">interval</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="s2">"unit"</span><span class="p">)</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span> -</span><span id="L-446"><a href="#L-446"><span class="linenos">446</span></a> -</span><span id="L-447"><a href="#L-447"><span class="linenos">447</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"year"</span><span class="p">:</span> -</span><span id="L-448"><a href="#L-448"><span class="linenos">448</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">years</span><span class="o">=</span><span class="n">n</span><span class="p">)</span> -</span><span id="L-449"><a href="#L-449"><span class="linenos">449</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"month"</span><span class="p">:</span> -</span><span id="L-450"><a href="#L-450"><span class="linenos">450</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">months</span><span class="o">=</span><span class="n">n</span><span class="p">)</span> -</span><span id="L-451"><a href="#L-451"><span class="linenos">451</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"week"</span><span class="p">:</span> -</span><span id="L-452"><a href="#L-452"><span class="linenos">452</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">weeks</span><span class="o">=</span><span class="n">n</span><span class="p">)</span> -</span><span id="L-453"><a href="#L-453"><span class="linenos">453</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"day"</span><span class="p">:</span> -</span><span id="L-454"><a href="#L-454"><span class="linenos">454</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">days</span><span class="o">=</span><span class="n">n</span><span class="p">)</span> -</span><span id="L-455"><a href="#L-455"><span class="linenos">455</span></a> <span class="k">return</span> <span class="kc">None</span> -</span><span id="L-456"><a href="#L-456"><span class="linenos">456</span></a> +</span><span id="L-437"><a href="#L-437"><span class="linenos">437</span></a><span class="k">def</span> <span class="nf">extract_date</span><span class="p">(</span><span class="n">cast</span><span class="p">):</span> +</span><span id="L-438"><a href="#L-438"><span class="linenos">438</span></a> <span class="c1"># The "fromisoformat" conversion could fail if the cast is used on an identifier,</span> +</span><span id="L-439"><a href="#L-439"><span class="linenos">439</span></a> <span class="c1"># so in that case we can't extract the date.</span> +</span><span id="L-440"><a href="#L-440"><span class="linenos">440</span></a> <span class="k">try</span><span class="p">:</span> +</span><span id="L-441"><a href="#L-441"><span class="linenos">441</span></a> <span class="k">if</span> <span class="n">cast</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"to"</span><span class="p">]</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">:</span> +</span><span id="L-442"><a href="#L-442"><span class="linenos">442</span></a> <span class="k">return</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="o">.</span><span class="n">fromisoformat</span><span class="p">(</span><span class="n">cast</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-443"><a href="#L-443"><span class="linenos">443</span></a> <span class="k">if</span> <span class="n">cast</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"to"</span><span class="p">]</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</span><span class="p">:</span> +</span><span id="L-444"><a href="#L-444"><span class="linenos">444</span></a> <span class="k">return</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="o">.</span><span class="n">fromisoformat</span><span class="p">(</span><span class="n">cast</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-445"><a href="#L-445"><span class="linenos">445</span></a> <span class="k">except</span> <span class="ne">ValueError</span><span class="p">:</span> +</span><span id="L-446"><a href="#L-446"><span class="linenos">446</span></a> <span class="k">return</span> <span class="kc">None</span> +</span><span id="L-447"><a href="#L-447"><span class="linenos">447</span></a> +</span><span id="L-448"><a href="#L-448"><span class="linenos">448</span></a> +</span><span id="L-449"><a href="#L-449"><span class="linenos">449</span></a><span class="k">def</span> <span class="nf">extract_interval</span><span class="p">(</span><span class="n">interval</span><span class="p">):</span> +</span><span id="L-450"><a href="#L-450"><span class="linenos">450</span></a> <span class="k">try</span><span class="p">:</span> +</span><span id="L-451"><a href="#L-451"><span class="linenos">451</span></a> <span class="kn">from</span> <span class="nn">dateutil.relativedelta</span> <span class="kn">import</span> <span class="n">relativedelta</span> <span class="c1"># type: ignore</span> +</span><span id="L-452"><a href="#L-452"><span class="linenos">452</span></a> <span class="k">except</span> <span class="ne">ModuleNotFoundError</span><span class="p">:</span> +</span><span id="L-453"><a href="#L-453"><span class="linenos">453</span></a> <span class="k">return</span> <span class="kc">None</span> +</span><span id="L-454"><a href="#L-454"><span class="linenos">454</span></a> +</span><span id="L-455"><a href="#L-455"><span class="linenos">455</span></a> <span class="n">n</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">interval</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-456"><a href="#L-456"><span class="linenos">456</span></a> <span class="n">unit</span> <span class="o">=</span> <span class="n">interval</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="s2">"unit"</span><span class="p">)</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span> </span><span id="L-457"><a href="#L-457"><span class="linenos">457</span></a> -</span><span id="L-458"><a href="#L-458"><span class="linenos">458</span></a><span class="k">def</span> <span class="nf">date_literal</span><span class="p">(</span><span class="n">date</span><span class="p">):</span> -</span><span id="L-459"><a href="#L-459"><span class="linenos">459</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span> -</span><span id="L-460"><a href="#L-460"><span class="linenos">460</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">string</span><span class="p">(</span><span class="n">date</span><span class="p">),</span> -</span><span id="L-461"><a href="#L-461"><span class="linenos">461</span></a> <span class="s2">"DATETIME"</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">date</span><span class="p">,</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="p">)</span> <span class="k">else</span> <span class="s2">"DATE"</span><span class="p">,</span> -</span><span id="L-462"><a href="#L-462"><span class="linenos">462</span></a> <span class="p">)</span> -</span><span id="L-463"><a href="#L-463"><span class="linenos">463</span></a> -</span><span id="L-464"><a href="#L-464"><span class="linenos">464</span></a> -</span><span id="L-465"><a href="#L-465"><span class="linenos">465</span></a><span class="k">def</span> <span class="nf">boolean_literal</span><span class="p">(</span><span class="n">condition</span><span class="p">):</span> -</span><span id="L-466"><a href="#L-466"><span class="linenos">466</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">condition</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> +</span><span id="L-458"><a href="#L-458"><span class="linenos">458</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"year"</span><span class="p">:</span> +</span><span id="L-459"><a href="#L-459"><span class="linenos">459</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">years</span><span class="o">=</span><span class="n">n</span><span class="p">)</span> +</span><span id="L-460"><a href="#L-460"><span class="linenos">460</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"month"</span><span class="p">:</span> +</span><span id="L-461"><a href="#L-461"><span class="linenos">461</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">months</span><span class="o">=</span><span class="n">n</span><span class="p">)</span> +</span><span id="L-462"><a href="#L-462"><span class="linenos">462</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"week"</span><span class="p">:</span> +</span><span id="L-463"><a href="#L-463"><span class="linenos">463</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">weeks</span><span class="o">=</span><span class="n">n</span><span class="p">)</span> +</span><span id="L-464"><a href="#L-464"><span class="linenos">464</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"day"</span><span class="p">:</span> +</span><span id="L-465"><a href="#L-465"><span class="linenos">465</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">days</span><span class="o">=</span><span class="n">n</span><span class="p">)</span> +</span><span id="L-466"><a href="#L-466"><span class="linenos">466</span></a> <span class="k">return</span> <span class="kc">None</span> </span><span id="L-467"><a href="#L-467"><span class="linenos">467</span></a> </span><span id="L-468"><a href="#L-468"><span class="linenos">468</span></a> -</span><span id="L-469"><a href="#L-469"><span class="linenos">469</span></a><span class="k">def</span> <span class="nf">_flat_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">simplifier</span><span class="p">):</span> -</span><span id="L-470"><a href="#L-470"><span class="linenos">470</span></a> <span class="n">operands</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-471"><a href="#L-471"><span class="linenos">471</span></a> <span class="n">queue</span> <span class="o">=</span> <span class="n">deque</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">(</span><span class="n">unnest</span><span class="o">=</span><span class="kc">False</span><span class="p">))</span> -</span><span id="L-472"><a href="#L-472"><span class="linenos">472</span></a> <span class="n">size</span> <span class="o">=</span> <span class="nb">len</span><span class="p">(</span><span class="n">queue</span><span class="p">)</span> -</span><span id="L-473"><a href="#L-473"><span class="linenos">473</span></a> -</span><span id="L-474"><a href="#L-474"><span class="linenos">474</span></a> <span class="k">while</span> <span class="n">queue</span><span class="p">:</span> -</span><span id="L-475"><a href="#L-475"><span class="linenos">475</span></a> <span class="n">a</span> <span class="o">=</span> <span class="n">queue</span><span class="o">.</span><span class="n">popleft</span><span class="p">()</span> -</span><span id="L-476"><a href="#L-476"><span class="linenos">476</span></a> -</span><span id="L-477"><a href="#L-477"><span class="linenos">477</span></a> <span class="k">for</span> <span class="n">b</span> <span class="ow">in</span> <span class="n">queue</span><span class="p">:</span> -</span><span id="L-478"><a href="#L-478"><span class="linenos">478</span></a> <span class="n">result</span> <span class="o">=</span> <span class="n">simplifier</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-469"><a href="#L-469"><span class="linenos">469</span></a><span class="k">def</span> <span class="nf">date_literal</span><span class="p">(</span><span class="n">date</span><span class="p">):</span> +</span><span id="L-470"><a href="#L-470"><span class="linenos">470</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span> +</span><span id="L-471"><a href="#L-471"><span class="linenos">471</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">string</span><span class="p">(</span><span class="n">date</span><span class="p">),</span> +</span><span id="L-472"><a href="#L-472"><span class="linenos">472</span></a> <span class="s2">"DATETIME"</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">date</span><span class="p">,</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="p">)</span> <span class="k">else</span> <span class="s2">"DATE"</span><span class="p">,</span> +</span><span id="L-473"><a href="#L-473"><span class="linenos">473</span></a> <span class="p">)</span> +</span><span id="L-474"><a href="#L-474"><span class="linenos">474</span></a> +</span><span id="L-475"><a href="#L-475"><span class="linenos">475</span></a> +</span><span id="L-476"><a href="#L-476"><span class="linenos">476</span></a><span class="k">def</span> <span class="nf">boolean_literal</span><span class="p">(</span><span class="n">condition</span><span class="p">):</span> +</span><span id="L-477"><a href="#L-477"><span class="linenos">477</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">condition</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> +</span><span id="L-478"><a href="#L-478"><span class="linenos">478</span></a> </span><span id="L-479"><a href="#L-479"><span class="linenos">479</span></a> -</span><span id="L-480"><a href="#L-480"><span class="linenos">480</span></a> <span class="k">if</span> <span class="n">result</span><span class="p">:</span> -</span><span id="L-481"><a href="#L-481"><span class="linenos">481</span></a> <span class="n">queue</span><span class="o">.</span><span class="n">remove</span><span class="p">(</span><span class="n">b</span><span class="p">)</span> -</span><span id="L-482"><a href="#L-482"><span class="linenos">482</span></a> <span class="n">queue</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">result</span><span class="p">)</span> -</span><span id="L-483"><a href="#L-483"><span class="linenos">483</span></a> <span class="k">break</span> -</span><span id="L-484"><a href="#L-484"><span class="linenos">484</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-485"><a href="#L-485"><span class="linenos">485</span></a> <span class="n">operands</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">a</span><span class="p">)</span> -</span><span id="L-486"><a href="#L-486"><span class="linenos">486</span></a> -</span><span id="L-487"><a href="#L-487"><span class="linenos">487</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">operands</span><span class="p">)</span> <span class="o"><</span> <span class="n">size</span><span class="p">:</span> -</span><span id="L-488"><a href="#L-488"><span class="linenos">488</span></a> <span class="k">return</span> <span class="n">functools</span><span class="o">.</span><span class="n">reduce</span><span class="p">(</span><span class="k">lambda</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">:</span> <span class="n">expression</span><span class="o">.</span><span class="vm">__class__</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">a</span><span class="p">,</span> <span class="n">expression</span><span class="o">=</span><span class="n">b</span><span class="p">),</span> <span class="n">operands</span><span class="p">)</span> -</span><span id="L-489"><a href="#L-489"><span class="linenos">489</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="L-480"><a href="#L-480"><span class="linenos">480</span></a><span class="k">def</span> <span class="nf">_flat_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">simplifier</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> +</span><span id="L-481"><a href="#L-481"><span class="linenos">481</span></a> <span class="k">if</span> <span class="n">root</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">expression</span><span class="o">.</span><span class="n">same_parent</span><span class="p">:</span> +</span><span id="L-482"><a href="#L-482"><span class="linenos">482</span></a> <span class="n">operands</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-483"><a href="#L-483"><span class="linenos">483</span></a> <span class="n">queue</span> <span class="o">=</span> <span class="n">deque</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">(</span><span class="n">unnest</span><span class="o">=</span><span class="kc">False</span><span class="p">))</span> +</span><span id="L-484"><a href="#L-484"><span class="linenos">484</span></a> <span class="n">size</span> <span class="o">=</span> <span class="nb">len</span><span class="p">(</span><span class="n">queue</span><span class="p">)</span> +</span><span id="L-485"><a href="#L-485"><span class="linenos">485</span></a> +</span><span id="L-486"><a href="#L-486"><span class="linenos">486</span></a> <span class="k">while</span> <span class="n">queue</span><span class="p">:</span> +</span><span id="L-487"><a href="#L-487"><span class="linenos">487</span></a> <span class="n">a</span> <span class="o">=</span> <span class="n">queue</span><span class="o">.</span><span class="n">popleft</span><span class="p">()</span> +</span><span id="L-488"><a href="#L-488"><span class="linenos">488</span></a> +</span><span id="L-489"><a href="#L-489"><span class="linenos">489</span></a> <span class="k">for</span> <span class="n">b</span> <span class="ow">in</span> <span class="n">queue</span><span class="p">:</span> +</span><span id="L-490"><a href="#L-490"><span class="linenos">490</span></a> <span class="n">result</span> <span class="o">=</span> <span class="n">simplifier</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">)</span> +</span><span id="L-491"><a href="#L-491"><span class="linenos">491</span></a> +</span><span id="L-492"><a href="#L-492"><span class="linenos">492</span></a> <span class="k">if</span> <span class="n">result</span><span class="p">:</span> +</span><span id="L-493"><a href="#L-493"><span class="linenos">493</span></a> <span class="n">queue</span><span class="o">.</span><span class="n">remove</span><span class="p">(</span><span class="n">b</span><span class="p">)</span> +</span><span id="L-494"><a href="#L-494"><span class="linenos">494</span></a> <span class="n">queue</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">result</span><span class="p">)</span> +</span><span id="L-495"><a href="#L-495"><span class="linenos">495</span></a> <span class="k">break</span> +</span><span id="L-496"><a href="#L-496"><span class="linenos">496</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-497"><a href="#L-497"><span class="linenos">497</span></a> <span class="n">operands</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">a</span><span class="p">)</span> +</span><span id="L-498"><a href="#L-498"><span class="linenos">498</span></a> +</span><span id="L-499"><a href="#L-499"><span class="linenos">499</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">operands</span><span class="p">)</span> <span class="o"><</span> <span class="n">size</span><span class="p">:</span> +</span><span id="L-500"><a href="#L-500"><span class="linenos">500</span></a> <span class="k">return</span> <span class="n">functools</span><span class="o">.</span><span class="n">reduce</span><span class="p">(</span> +</span><span id="L-501"><a href="#L-501"><span class="linenos">501</span></a> <span class="k">lambda</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">:</span> <span class="n">expression</span><span class="o">.</span><span class="vm">__class__</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">a</span><span class="p">,</span> <span class="n">expression</span><span class="o">=</span><span class="n">b</span><span class="p">),</span> <span class="n">operands</span> +</span><span id="L-502"><a href="#L-502"><span class="linenos">502</span></a> <span class="p">)</span> +</span><span id="L-503"><a href="#L-503"><span class="linenos">503</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -611,42 +631,44 @@ </div> <a class="headerlink" href="#simplify"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="simplify-16"><a href="#simplify-16"><span class="linenos">16</span></a><span class="k">def</span> <span class="nf">simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="simplify-17"><a href="#simplify-17"><span class="linenos">17</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="simplify-18"><a href="#simplify-18"><span class="linenos">18</span></a><span class="sd"> Rewrite sqlglot AST to simplify expressions.</span> -</span><span id="simplify-19"><a href="#simplify-19"><span class="linenos">19</span></a> -</span><span id="simplify-20"><a href="#simplify-20"><span class="linenos">20</span></a><span class="sd"> Example:</span> -</span><span id="simplify-21"><a href="#simplify-21"><span class="linenos">21</span></a><span class="sd"> >>> import sqlglot</span> -</span><span id="simplify-22"><a href="#simplify-22"><span class="linenos">22</span></a><span class="sd"> >>> expression = sqlglot.parse_one("TRUE AND TRUE")</span> -</span><span id="simplify-23"><a href="#simplify-23"><span class="linenos">23</span></a><span class="sd"> >>> simplify(expression).sql()</span> -</span><span id="simplify-24"><a href="#simplify-24"><span class="linenos">24</span></a><span class="sd"> 'TRUE'</span> -</span><span id="simplify-25"><a href="#simplify-25"><span class="linenos">25</span></a> -</span><span id="simplify-26"><a href="#simplify-26"><span class="linenos">26</span></a><span class="sd"> Args:</span> -</span><span id="simplify-27"><a href="#simplify-27"><span class="linenos">27</span></a><span class="sd"> expression (sqlglot.Expression): expression to simplify</span> -</span><span id="simplify-28"><a href="#simplify-28"><span class="linenos">28</span></a><span class="sd"> Returns:</span> -</span><span id="simplify-29"><a href="#simplify-29"><span class="linenos">29</span></a><span class="sd"> sqlglot.Expression: simplified expression</span> -</span><span id="simplify-30"><a href="#simplify-30"><span class="linenos">30</span></a><span class="sd"> """</span> -</span><span id="simplify-31"><a href="#simplify-31"><span class="linenos">31</span></a> -</span><span id="simplify-32"><a href="#simplify-32"><span class="linenos">32</span></a> <span class="k">def</span> <span class="nf">_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> -</span><span id="simplify-33"><a href="#simplify-33"><span class="linenos">33</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">expression</span> -</span><span id="simplify-34"><a href="#simplify-34"><span class="linenos">34</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">rewrite_between</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="simplify-35"><a href="#simplify-35"><span class="linenos">35</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">uniq_sort</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="simplify-36"><a href="#simplify-36"><span class="linenos">36</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">absorb_and_eliminate</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="simplify-37"><a href="#simplify-37"><span class="linenos">37</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">replace_children</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="k">lambda</span> <span class="n">e</span><span class="p">:</span> <span class="n">_simplify</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="kc">False</span><span class="p">))</span> -</span><span id="simplify-38"><a href="#simplify-38"><span class="linenos">38</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_not</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="simplify-39"><a href="#simplify-39"><span class="linenos">39</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">flatten</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="simplify-40"><a href="#simplify-40"><span class="linenos">40</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_connectors</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="simplify-41"><a href="#simplify-41"><span class="linenos">41</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">remove_compliments</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="simplify-42"><a href="#simplify-42"><span class="linenos">42</span></a> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">parent</span> -</span><span id="simplify-43"><a href="#simplify-43"><span class="linenos">43</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_literals</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="simplify-44"><a href="#simplify-44"><span class="linenos">44</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_parens</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="simplify-45"><a href="#simplify-45"><span class="linenos">45</span></a> <span class="k">if</span> <span class="n">root</span><span class="p">:</span> -</span><span id="simplify-46"><a href="#simplify-46"><span class="linenos">46</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="simplify-47"><a href="#simplify-47"><span class="linenos">47</span></a> <span class="k">return</span> <span class="n">node</span> -</span><span id="simplify-48"><a href="#simplify-48"><span class="linenos">48</span></a> -</span><span id="simplify-49"><a href="#simplify-49"><span class="linenos">49</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">while_changing</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">_simplify</span><span class="p">)</span> -</span><span id="simplify-50"><a href="#simplify-50"><span class="linenos">50</span></a> <span class="n">remove_where_true</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="simplify-51"><a href="#simplify-51"><span class="linenos">51</span></a> <span class="k">return</span> <span class="n">expression</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="simplify-15"><a href="#simplify-15"><span class="linenos">15</span></a><span class="k">def</span> <span class="nf">simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="simplify-16"><a href="#simplify-16"><span class="linenos">16</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="simplify-17"><a href="#simplify-17"><span class="linenos">17</span></a><span class="sd"> Rewrite sqlglot AST to simplify expressions.</span> +</span><span id="simplify-18"><a href="#simplify-18"><span class="linenos">18</span></a> +</span><span id="simplify-19"><a href="#simplify-19"><span class="linenos">19</span></a><span class="sd"> Example:</span> +</span><span id="simplify-20"><a href="#simplify-20"><span class="linenos">20</span></a><span class="sd"> >>> import sqlglot</span> +</span><span id="simplify-21"><a href="#simplify-21"><span class="linenos">21</span></a><span class="sd"> >>> expression = sqlglot.parse_one("TRUE AND TRUE")</span> +</span><span id="simplify-22"><a href="#simplify-22"><span class="linenos">22</span></a><span class="sd"> >>> simplify(expression).sql()</span> +</span><span id="simplify-23"><a href="#simplify-23"><span class="linenos">23</span></a><span class="sd"> 'TRUE'</span> +</span><span id="simplify-24"><a href="#simplify-24"><span class="linenos">24</span></a> +</span><span id="simplify-25"><a href="#simplify-25"><span class="linenos">25</span></a><span class="sd"> Args:</span> +</span><span id="simplify-26"><a href="#simplify-26"><span class="linenos">26</span></a><span class="sd"> expression (sqlglot.Expression): expression to simplify</span> +</span><span id="simplify-27"><a href="#simplify-27"><span class="linenos">27</span></a><span class="sd"> Returns:</span> +</span><span id="simplify-28"><a href="#simplify-28"><span class="linenos">28</span></a><span class="sd"> sqlglot.Expression: simplified expression</span> +</span><span id="simplify-29"><a href="#simplify-29"><span class="linenos">29</span></a><span class="sd"> """</span> +</span><span id="simplify-30"><a href="#simplify-30"><span class="linenos">30</span></a> +</span><span id="simplify-31"><a href="#simplify-31"><span class="linenos">31</span></a> <span class="n">cache</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="simplify-32"><a href="#simplify-32"><span class="linenos">32</span></a> +</span><span id="simplify-33"><a href="#simplify-33"><span class="linenos">33</span></a> <span class="k">def</span> <span class="nf">_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> +</span><span id="simplify-34"><a href="#simplify-34"><span class="linenos">34</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">expression</span> +</span><span id="simplify-35"><a href="#simplify-35"><span class="linenos">35</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">rewrite_between</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="simplify-36"><a href="#simplify-36"><span class="linenos">36</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">uniq_sort</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">cache</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span> +</span><span id="simplify-37"><a href="#simplify-37"><span class="linenos">37</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">absorb_and_eliminate</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span> +</span><span id="simplify-38"><a href="#simplify-38"><span class="linenos">38</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">replace_children</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="k">lambda</span> <span class="n">e</span><span class="p">:</span> <span class="n">_simplify</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="kc">False</span><span class="p">))</span> +</span><span id="simplify-39"><a href="#simplify-39"><span class="linenos">39</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_not</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="simplify-40"><a href="#simplify-40"><span class="linenos">40</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">flatten</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="simplify-41"><a href="#simplify-41"><span class="linenos">41</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_connectors</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span> +</span><span id="simplify-42"><a href="#simplify-42"><span class="linenos">42</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">remove_compliments</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span> +</span><span id="simplify-43"><a href="#simplify-43"><span class="linenos">43</span></a> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">parent</span> +</span><span id="simplify-44"><a href="#simplify-44"><span class="linenos">44</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_literals</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span> +</span><span id="simplify-45"><a href="#simplify-45"><span class="linenos">45</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">simplify_parens</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="simplify-46"><a href="#simplify-46"><span class="linenos">46</span></a> <span class="k">if</span> <span class="n">root</span><span class="p">:</span> +</span><span id="simplify-47"><a href="#simplify-47"><span class="linenos">47</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="simplify-48"><a href="#simplify-48"><span class="linenos">48</span></a> <span class="k">return</span> <span class="n">node</span> +</span><span id="simplify-49"><a href="#simplify-49"><span class="linenos">49</span></a> +</span><span id="simplify-50"><a href="#simplify-50"><span class="linenos">50</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">while_changing</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">_simplify</span><span class="p">)</span> +</span><span id="simplify-51"><a href="#simplify-51"><span class="linenos">51</span></a> <span class="n">remove_where_true</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="simplify-52"><a href="#simplify-52"><span class="linenos">52</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -690,17 +712,17 @@ </div> <a class="headerlink" href="#rewrite_between"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="rewrite_between-54"><a href="#rewrite_between-54"><span class="linenos">54</span></a><span class="k">def</span> <span class="nf">rewrite_between</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span> -</span><span id="rewrite_between-55"><a href="#rewrite_between-55"><span class="linenos">55</span></a><span class="w"> </span><span class="sd">"""Rewrite x between y and z to x >= y AND x <= z.</span> -</span><span id="rewrite_between-56"><a href="#rewrite_between-56"><span class="linenos">56</span></a> -</span><span id="rewrite_between-57"><a href="#rewrite_between-57"><span class="linenos">57</span></a><span class="sd"> This is done because comparison simplification is only done on lt/lte/gt/gte.</span> -</span><span id="rewrite_between-58"><a href="#rewrite_between-58"><span class="linenos">58</span></a><span class="sd"> """</span> -</span><span id="rewrite_between-59"><a href="#rewrite_between-59"><span class="linenos">59</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Between</span><span class="p">):</span> -</span><span id="rewrite_between-60"><a href="#rewrite_between-60"><span class="linenos">60</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span> -</span><span id="rewrite_between-61"><a href="#rewrite_between-61"><span class="linenos">61</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">expression</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"low"</span><span class="p">]),</span> -</span><span id="rewrite_between-62"><a href="#rewrite_between-62"><span class="linenos">62</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">expression</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"high"</span><span class="p">]),</span> -</span><span id="rewrite_between-63"><a href="#rewrite_between-63"><span class="linenos">63</span></a> <span class="p">)</span> -</span><span id="rewrite_between-64"><a href="#rewrite_between-64"><span class="linenos">64</span></a> <span class="k">return</span> <span class="n">expression</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="rewrite_between-55"><a href="#rewrite_between-55"><span class="linenos">55</span></a><span class="k">def</span> <span class="nf">rewrite_between</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">:</span> +</span><span id="rewrite_between-56"><a href="#rewrite_between-56"><span class="linenos">56</span></a><span class="w"> </span><span class="sd">"""Rewrite x between y and z to x >= y AND x <= z.</span> +</span><span id="rewrite_between-57"><a href="#rewrite_between-57"><span class="linenos">57</span></a> +</span><span id="rewrite_between-58"><a href="#rewrite_between-58"><span class="linenos">58</span></a><span class="sd"> This is done because comparison simplification is only done on lt/lte/gt/gte.</span> +</span><span id="rewrite_between-59"><a href="#rewrite_between-59"><span class="linenos">59</span></a><span class="sd"> """</span> +</span><span id="rewrite_between-60"><a href="#rewrite_between-60"><span class="linenos">60</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Between</span><span class="p">):</span> +</span><span id="rewrite_between-61"><a href="#rewrite_between-61"><span class="linenos">61</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span> +</span><span id="rewrite_between-62"><a href="#rewrite_between-62"><span class="linenos">62</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">expression</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"low"</span><span class="p">]),</span> +</span><span id="rewrite_between-63"><a href="#rewrite_between-63"><span class="linenos">63</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">expression</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"high"</span><span class="p">]),</span> +</span><span id="rewrite_between-64"><a href="#rewrite_between-64"><span class="linenos">64</span></a> <span class="p">)</span> +</span><span id="rewrite_between-65"><a href="#rewrite_between-65"><span class="linenos">65</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -722,32 +744,32 @@ </div> <a class="headerlink" href="#simplify_not"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="simplify_not-67"><a href="#simplify_not-67"><span class="linenos">67</span></a><span class="k">def</span> <span class="nf">simplify_not</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="simplify_not-68"><a href="#simplify_not-68"><span class="linenos">68</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="simplify_not-69"><a href="#simplify_not-69"><span class="linenos">69</span></a><span class="sd"> Demorgan's Law</span> -</span><span id="simplify_not-70"><a href="#simplify_not-70"><span class="linenos">70</span></a><span class="sd"> NOT (x OR y) -> NOT x AND NOT y</span> -</span><span id="simplify_not-71"><a href="#simplify_not-71"><span class="linenos">71</span></a><span class="sd"> NOT (x AND y) -> NOT x OR NOT y</span> -</span><span id="simplify_not-72"><a href="#simplify_not-72"><span class="linenos">72</span></a><span class="sd"> """</span> -</span><span id="simplify_not-73"><a href="#simplify_not-73"><span class="linenos">73</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">):</span> -</span><span id="simplify_not-74"><a href="#simplify_not-74"><span class="linenos">74</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Null</span><span class="p">):</span> -</span><span id="simplify_not-75"><a href="#simplify_not-75"><span class="linenos">75</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> -</span><span id="simplify_not-76"><a href="#simplify_not-76"><span class="linenos">76</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Paren</span><span class="p">):</span> -</span><span id="simplify_not-77"><a href="#simplify_not-77"><span class="linenos">77</span></a> <span class="n">condition</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span> -</span><span id="simplify_not-78"><a href="#simplify_not-78"><span class="linenos">78</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">):</span> -</span><span id="simplify_not-79"><a href="#simplify_not-79"><span class="linenos">79</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">left</span><span class="p">),</span> <span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">right</span><span class="p">))</span> -</span><span id="simplify_not-80"><a href="#simplify_not-80"><span class="linenos">80</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">):</span> -</span><span id="simplify_not-81"><a href="#simplify_not-81"><span class="linenos">81</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">left</span><span class="p">),</span> <span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">right</span><span class="p">))</span> -</span><span id="simplify_not-82"><a href="#simplify_not-82"><span class="linenos">82</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Null</span><span class="p">):</span> -</span><span id="simplify_not-83"><a href="#simplify_not-83"><span class="linenos">83</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> -</span><span id="simplify_not-84"><a href="#simplify_not-84"><span class="linenos">84</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">):</span> -</span><span id="simplify_not-85"><a href="#simplify_not-85"><span class="linenos">85</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> -</span><span id="simplify_not-86"><a href="#simplify_not-86"><span class="linenos">86</span></a> <span class="k">if</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">FALSE</span><span class="p">:</span> -</span><span id="simplify_not-87"><a href="#simplify_not-87"><span class="linenos">87</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> -</span><span id="simplify_not-88"><a href="#simplify_not-88"><span class="linenos">88</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">):</span> -</span><span id="simplify_not-89"><a href="#simplify_not-89"><span class="linenos">89</span></a> <span class="c1"># double negation</span> -</span><span id="simplify_not-90"><a href="#simplify_not-90"><span class="linenos">90</span></a> <span class="c1"># NOT NOT x -> x</span> -</span><span id="simplify_not-91"><a href="#simplify_not-91"><span class="linenos">91</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">this</span> -</span><span id="simplify_not-92"><a href="#simplify_not-92"><span class="linenos">92</span></a> <span class="k">return</span> <span class="n">expression</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="simplify_not-68"><a href="#simplify_not-68"><span class="linenos">68</span></a><span class="k">def</span> <span class="nf">simplify_not</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="simplify_not-69"><a href="#simplify_not-69"><span class="linenos">69</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="simplify_not-70"><a href="#simplify_not-70"><span class="linenos">70</span></a><span class="sd"> Demorgan's Law</span> +</span><span id="simplify_not-71"><a href="#simplify_not-71"><span class="linenos">71</span></a><span class="sd"> NOT (x OR y) -> NOT x AND NOT y</span> +</span><span id="simplify_not-72"><a href="#simplify_not-72"><span class="linenos">72</span></a><span class="sd"> NOT (x AND y) -> NOT x OR NOT y</span> +</span><span id="simplify_not-73"><a href="#simplify_not-73"><span class="linenos">73</span></a><span class="sd"> """</span> +</span><span id="simplify_not-74"><a href="#simplify_not-74"><span class="linenos">74</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">):</span> +</span><span id="simplify_not-75"><a href="#simplify_not-75"><span class="linenos">75</span></a> <span class="k">if</span> <span class="n">is_null</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">):</span> +</span><span id="simplify_not-76"><a href="#simplify_not-76"><span class="linenos">76</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> +</span><span id="simplify_not-77"><a href="#simplify_not-77"><span class="linenos">77</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Paren</span><span class="p">):</span> +</span><span id="simplify_not-78"><a href="#simplify_not-78"><span class="linenos">78</span></a> <span class="n">condition</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span> +</span><span id="simplify_not-79"><a href="#simplify_not-79"><span class="linenos">79</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">):</span> +</span><span id="simplify_not-80"><a href="#simplify_not-80"><span class="linenos">80</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">left</span><span class="p">),</span> <span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">right</span><span class="p">))</span> +</span><span id="simplify_not-81"><a href="#simplify_not-81"><span class="linenos">81</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">):</span> +</span><span id="simplify_not-82"><a href="#simplify_not-82"><span class="linenos">82</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">left</span><span class="p">),</span> <span class="n">exp</span><span class="o">.</span><span class="n">not_</span><span class="p">(</span><span class="n">condition</span><span class="o">.</span><span class="n">right</span><span class="p">))</span> +</span><span id="simplify_not-83"><a href="#simplify_not-83"><span class="linenos">83</span></a> <span class="k">if</span> <span class="n">is_null</span><span class="p">(</span><span class="n">condition</span><span class="p">):</span> +</span><span id="simplify_not-84"><a href="#simplify_not-84"><span class="linenos">84</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> +</span><span id="simplify_not-85"><a href="#simplify_not-85"><span class="linenos">85</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">):</span> +</span><span id="simplify_not-86"><a href="#simplify_not-86"><span class="linenos">86</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> +</span><span id="simplify_not-87"><a href="#simplify_not-87"><span class="linenos">87</span></a> <span class="k">if</span> <span class="n">is_false</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">):</span> +</span><span id="simplify_not-88"><a href="#simplify_not-88"><span class="linenos">88</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> +</span><span id="simplify_not-89"><a href="#simplify_not-89"><span class="linenos">89</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">):</span> +</span><span id="simplify_not-90"><a href="#simplify_not-90"><span class="linenos">90</span></a> <span class="c1"># double negation</span> +</span><span id="simplify_not-91"><a href="#simplify_not-91"><span class="linenos">91</span></a> <span class="c1"># NOT NOT x -> x</span> +</span><span id="simplify_not-92"><a href="#simplify_not-92"><span class="linenos">92</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">this</span> +</span><span id="simplify_not-93"><a href="#simplify_not-93"><span class="linenos">93</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -769,17 +791,17 @@ NOT (x AND y) -> NOT x OR NOT y</p> </div> <a class="headerlink" href="#flatten"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="flatten-95"><a href="#flatten-95"><span class="linenos"> 95</span></a><span class="k">def</span> <span class="nf">flatten</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="flatten-96"><a href="#flatten-96"><span class="linenos"> 96</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="flatten-97"><a href="#flatten-97"><span class="linenos"> 97</span></a><span class="sd"> A AND (B AND C) -> A AND B AND C</span> -</span><span id="flatten-98"><a href="#flatten-98"><span class="linenos"> 98</span></a><span class="sd"> A OR (B OR C) -> A OR B OR C</span> -</span><span id="flatten-99"><a href="#flatten-99"><span class="linenos"> 99</span></a><span class="sd"> """</span> -</span><span id="flatten-100"><a href="#flatten-100"><span class="linenos">100</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> -</span><span id="flatten-101"><a href="#flatten-101"><span class="linenos">101</span></a> <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> -</span><span id="flatten-102"><a href="#flatten-102"><span class="linenos">102</span></a> <span class="n">child</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span> -</span><span id="flatten-103"><a href="#flatten-103"><span class="linenos">103</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">child</span><span class="p">,</span> <span class="n">expression</span><span class="o">.</span><span class="vm">__class__</span><span class="p">):</span> -</span><span id="flatten-104"><a href="#flatten-104"><span class="linenos">104</span></a> <span class="n">node</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">child</span><span class="p">)</span> -</span><span id="flatten-105"><a href="#flatten-105"><span class="linenos">105</span></a> <span class="k">return</span> <span class="n">expression</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="flatten-96"><a href="#flatten-96"><span class="linenos"> 96</span></a><span class="k">def</span> <span class="nf">flatten</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="flatten-97"><a href="#flatten-97"><span class="linenos"> 97</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="flatten-98"><a href="#flatten-98"><span class="linenos"> 98</span></a><span class="sd"> A AND (B AND C) -> A AND B AND C</span> +</span><span id="flatten-99"><a href="#flatten-99"><span class="linenos"> 99</span></a><span class="sd"> A OR (B OR C) -> A OR B OR C</span> +</span><span id="flatten-100"><a href="#flatten-100"><span class="linenos">100</span></a><span class="sd"> """</span> +</span><span id="flatten-101"><a href="#flatten-101"><span class="linenos">101</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> +</span><span id="flatten-102"><a href="#flatten-102"><span class="linenos">102</span></a> <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> +</span><span id="flatten-103"><a href="#flatten-103"><span class="linenos">103</span></a> <span class="n">child</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span> +</span><span id="flatten-104"><a href="#flatten-104"><span class="linenos">104</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">child</span><span class="p">,</span> <span class="n">expression</span><span class="o">.</span><span class="vm">__class__</span><span class="p">):</span> +</span><span id="flatten-105"><a href="#flatten-105"><span class="linenos">105</span></a> <span class="n">node</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">child</span><span class="p">)</span> +</span><span id="flatten-106"><a href="#flatten-106"><span class="linenos">106</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -794,48 +816,48 @@ A OR (B OR C) -> A OR B OR C</p> <div class="attr function"> <span class="def">def</span> - <span class="name">simplify_connectors</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span> + <span class="name">simplify_connectors</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span>, </span><span class="param"><span class="n">root</span><span class="o">=</span><span class="kc">True</span></span><span class="return-annotation">):</span></span> <label class="view-source-button" for="simplify_connectors-view-source"><span>View Source</span></label> </div> <a class="headerlink" href="#simplify_connectors"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="simplify_connectors-108"><a href="#simplify_connectors-108"><span class="linenos">108</span></a><span class="k">def</span> <span class="nf">simplify_connectors</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="simplify_connectors-109"><a href="#simplify_connectors-109"><span class="linenos">109</span></a> <span class="k">def</span> <span class="nf">_simplify_connectors</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">):</span> -</span><span id="simplify_connectors-110"><a href="#simplify_connectors-110"><span class="linenos">110</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> -</span><span id="simplify_connectors-111"><a href="#simplify_connectors-111"><span class="linenos">111</span></a> <span class="k">if</span> <span class="n">left</span> <span class="o">==</span> <span class="n">right</span><span class="p">:</span> -</span><span id="simplify_connectors-112"><a href="#simplify_connectors-112"><span class="linenos">112</span></a> <span class="k">return</span> <span class="n">left</span> -</span><span id="simplify_connectors-113"><a href="#simplify_connectors-113"><span class="linenos">113</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">):</span> -</span><span id="simplify_connectors-114"><a href="#simplify_connectors-114"><span class="linenos">114</span></a> <span class="k">if</span> <span class="n">FALSE</span> <span class="ow">in</span> <span class="p">(</span><span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">):</span> -</span><span id="simplify_connectors-115"><a href="#simplify_connectors-115"><span class="linenos">115</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> -</span><span id="simplify_connectors-116"><a href="#simplify_connectors-116"><span class="linenos">116</span></a> <span class="k">if</span> <span class="n">NULL</span> <span class="ow">in</span> <span class="p">(</span><span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">):</span> -</span><span id="simplify_connectors-117"><a href="#simplify_connectors-117"><span class="linenos">117</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> -</span><span id="simplify_connectors-118"><a href="#simplify_connectors-118"><span class="linenos">118</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">and</span> <span class="n">always_true</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> -</span><span id="simplify_connectors-119"><a href="#simplify_connectors-119"><span class="linenos">119</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> -</span><span id="simplify_connectors-120"><a href="#simplify_connectors-120"><span class="linenos">120</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">left</span><span class="p">):</span> -</span><span id="simplify_connectors-121"><a href="#simplify_connectors-121"><span class="linenos">121</span></a> <span class="k">return</span> <span class="n">right</span> -</span><span id="simplify_connectors-122"><a href="#simplify_connectors-122"><span class="linenos">122</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> -</span><span id="simplify_connectors-123"><a href="#simplify_connectors-123"><span class="linenos">123</span></a> <span class="k">return</span> <span class="n">left</span> -</span><span id="simplify_connectors-124"><a href="#simplify_connectors-124"><span class="linenos">124</span></a> <span class="k">return</span> <span class="n">_simplify_comparison</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">)</span> -</span><span id="simplify_connectors-125"><a href="#simplify_connectors-125"><span class="linenos">125</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">):</span> -</span><span id="simplify_connectors-126"><a href="#simplify_connectors-126"><span class="linenos">126</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">or</span> <span class="n">always_true</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> -</span><span id="simplify_connectors-127"><a href="#simplify_connectors-127"><span class="linenos">127</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> -</span><span id="simplify_connectors-128"><a href="#simplify_connectors-128"><span class="linenos">128</span></a> <span class="k">if</span> <span class="n">left</span> <span class="o">==</span> <span class="n">FALSE</span> <span class="ow">and</span> <span class="n">right</span> <span class="o">==</span> <span class="n">FALSE</span><span class="p">:</span> -</span><span id="simplify_connectors-129"><a href="#simplify_connectors-129"><span class="linenos">129</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> -</span><span id="simplify_connectors-130"><a href="#simplify_connectors-130"><span class="linenos">130</span></a> <span class="k">if</span> <span class="p">(</span> -</span><span id="simplify_connectors-131"><a href="#simplify_connectors-131"><span class="linenos">131</span></a> <span class="p">(</span><span class="n">left</span> <span class="o">==</span> <span class="n">NULL</span> <span class="ow">and</span> <span class="n">right</span> <span class="o">==</span> <span class="n">NULL</span><span class="p">)</span> -</span><span id="simplify_connectors-132"><a href="#simplify_connectors-132"><span class="linenos">132</span></a> <span class="ow">or</span> <span class="p">(</span><span class="n">left</span> <span class="o">==</span> <span class="n">NULL</span> <span class="ow">and</span> <span class="n">right</span> <span class="o">==</span> <span class="n">FALSE</span><span class="p">)</span> -</span><span id="simplify_connectors-133"><a href="#simplify_connectors-133"><span class="linenos">133</span></a> <span class="ow">or</span> <span class="p">(</span><span class="n">left</span> <span class="o">==</span> <span class="n">FALSE</span> <span class="ow">and</span> <span class="n">right</span> <span class="o">==</span> <span class="n">NULL</span><span class="p">)</span> -</span><span id="simplify_connectors-134"><a href="#simplify_connectors-134"><span class="linenos">134</span></a> <span class="p">):</span> -</span><span id="simplify_connectors-135"><a href="#simplify_connectors-135"><span class="linenos">135</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> -</span><span id="simplify_connectors-136"><a href="#simplify_connectors-136"><span class="linenos">136</span></a> <span class="k">if</span> <span class="n">left</span> <span class="o">==</span> <span class="n">FALSE</span><span class="p">:</span> -</span><span id="simplify_connectors-137"><a href="#simplify_connectors-137"><span class="linenos">137</span></a> <span class="k">return</span> <span class="n">right</span> -</span><span id="simplify_connectors-138"><a href="#simplify_connectors-138"><span class="linenos">138</span></a> <span class="k">if</span> <span class="n">right</span> <span class="o">==</span> <span class="n">FALSE</span><span class="p">:</span> -</span><span id="simplify_connectors-139"><a href="#simplify_connectors-139"><span class="linenos">139</span></a> <span class="k">return</span> <span class="n">left</span> -</span><span id="simplify_connectors-140"><a href="#simplify_connectors-140"><span class="linenos">140</span></a> <span class="k">return</span> <span class="n">_simplify_comparison</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">,</span> <span class="n">or_</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> -</span><span id="simplify_connectors-141"><a href="#simplify_connectors-141"><span class="linenos">141</span></a> <span class="k">return</span> <span class="kc">None</span> -</span><span id="simplify_connectors-142"><a href="#simplify_connectors-142"><span class="linenos">142</span></a> -</span><span id="simplify_connectors-143"><a href="#simplify_connectors-143"><span class="linenos">143</span></a> <span class="k">return</span> <span class="n">_flat_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">_simplify_connectors</span><span class="p">)</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="simplify_connectors-109"><a href="#simplify_connectors-109"><span class="linenos">109</span></a><span class="k">def</span> <span class="nf">simplify_connectors</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> +</span><span id="simplify_connectors-110"><a href="#simplify_connectors-110"><span class="linenos">110</span></a> <span class="k">def</span> <span class="nf">_simplify_connectors</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">):</span> +</span><span id="simplify_connectors-111"><a href="#simplify_connectors-111"><span class="linenos">111</span></a> <span class="k">if</span> <span class="n">left</span> <span class="o">==</span> <span class="n">right</span><span class="p">:</span> +</span><span id="simplify_connectors-112"><a href="#simplify_connectors-112"><span class="linenos">112</span></a> <span class="k">return</span> <span class="n">left</span> +</span><span id="simplify_connectors-113"><a href="#simplify_connectors-113"><span class="linenos">113</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">):</span> +</span><span id="simplify_connectors-114"><a href="#simplify_connectors-114"><span class="linenos">114</span></a> <span class="k">if</span> <span class="n">is_false</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_false</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> +</span><span id="simplify_connectors-115"><a href="#simplify_connectors-115"><span class="linenos">115</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> +</span><span id="simplify_connectors-116"><a href="#simplify_connectors-116"><span class="linenos">116</span></a> <span class="k">if</span> <span class="n">is_null</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_null</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> +</span><span id="simplify_connectors-117"><a href="#simplify_connectors-117"><span class="linenos">117</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> +</span><span id="simplify_connectors-118"><a href="#simplify_connectors-118"><span class="linenos">118</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">and</span> <span class="n">always_true</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> +</span><span id="simplify_connectors-119"><a href="#simplify_connectors-119"><span class="linenos">119</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> +</span><span id="simplify_connectors-120"><a href="#simplify_connectors-120"><span class="linenos">120</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">left</span><span class="p">):</span> +</span><span id="simplify_connectors-121"><a href="#simplify_connectors-121"><span class="linenos">121</span></a> <span class="k">return</span> <span class="n">right</span> +</span><span id="simplify_connectors-122"><a href="#simplify_connectors-122"><span class="linenos">122</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> +</span><span id="simplify_connectors-123"><a href="#simplify_connectors-123"><span class="linenos">123</span></a> <span class="k">return</span> <span class="n">left</span> +</span><span id="simplify_connectors-124"><a href="#simplify_connectors-124"><span class="linenos">124</span></a> <span class="k">return</span> <span class="n">_simplify_comparison</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">)</span> +</span><span id="simplify_connectors-125"><a href="#simplify_connectors-125"><span class="linenos">125</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span><span class="p">):</span> +</span><span id="simplify_connectors-126"><a href="#simplify_connectors-126"><span class="linenos">126</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">or</span> <span class="n">always_true</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> +</span><span id="simplify_connectors-127"><a href="#simplify_connectors-127"><span class="linenos">127</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> +</span><span id="simplify_connectors-128"><a href="#simplify_connectors-128"><span class="linenos">128</span></a> <span class="k">if</span> <span class="n">is_false</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">and</span> <span class="n">is_false</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> +</span><span id="simplify_connectors-129"><a href="#simplify_connectors-129"><span class="linenos">129</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> +</span><span id="simplify_connectors-130"><a href="#simplify_connectors-130"><span class="linenos">130</span></a> <span class="k">if</span> <span class="p">(</span> +</span><span id="simplify_connectors-131"><a href="#simplify_connectors-131"><span class="linenos">131</span></a> <span class="p">(</span><span class="n">is_null</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">and</span> <span class="n">is_null</span><span class="p">(</span><span class="n">right</span><span class="p">))</span> +</span><span id="simplify_connectors-132"><a href="#simplify_connectors-132"><span class="linenos">132</span></a> <span class="ow">or</span> <span class="p">(</span><span class="n">is_null</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">and</span> <span class="n">is_false</span><span class="p">(</span><span class="n">right</span><span class="p">))</span> +</span><span id="simplify_connectors-133"><a href="#simplify_connectors-133"><span class="linenos">133</span></a> <span class="ow">or</span> <span class="p">(</span><span class="n">is_false</span><span class="p">(</span><span class="n">left</span><span class="p">)</span> <span class="ow">and</span> <span class="n">is_null</span><span class="p">(</span><span class="n">right</span><span class="p">))</span> +</span><span id="simplify_connectors-134"><a href="#simplify_connectors-134"><span class="linenos">134</span></a> <span class="p">):</span> +</span><span id="simplify_connectors-135"><a href="#simplify_connectors-135"><span class="linenos">135</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">null</span><span class="p">()</span> +</span><span id="simplify_connectors-136"><a href="#simplify_connectors-136"><span class="linenos">136</span></a> <span class="k">if</span> <span class="n">is_false</span><span class="p">(</span><span class="n">left</span><span class="p">):</span> +</span><span id="simplify_connectors-137"><a href="#simplify_connectors-137"><span class="linenos">137</span></a> <span class="k">return</span> <span class="n">right</span> +</span><span id="simplify_connectors-138"><a href="#simplify_connectors-138"><span class="linenos">138</span></a> <span class="k">if</span> <span class="n">is_false</span><span class="p">(</span><span class="n">right</span><span class="p">):</span> +</span><span id="simplify_connectors-139"><a href="#simplify_connectors-139"><span class="linenos">139</span></a> <span class="k">return</span> <span class="n">left</span> +</span><span id="simplify_connectors-140"><a href="#simplify_connectors-140"><span class="linenos">140</span></a> <span class="k">return</span> <span class="n">_simplify_comparison</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">,</span> <span class="n">or_</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> +</span><span id="simplify_connectors-141"><a href="#simplify_connectors-141"><span class="linenos">141</span></a> +</span><span id="simplify_connectors-142"><a href="#simplify_connectors-142"><span class="linenos">142</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> +</span><span id="simplify_connectors-143"><a href="#simplify_connectors-143"><span class="linenos">143</span></a> <span class="k">return</span> <span class="n">_flat_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">_simplify_connectors</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span> +</span><span id="simplify_connectors-144"><a href="#simplify_connectors-144"><span class="linenos">144</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -847,26 +869,26 @@ A OR (B OR C) -> A OR B OR C</p> <div class="attr function"> <span class="def">def</span> - <span class="name">remove_compliments</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span> + <span class="name">remove_compliments</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span>, </span><span class="param"><span class="n">root</span><span class="o">=</span><span class="kc">True</span></span><span class="return-annotation">):</span></span> <label class="view-source-button" for="remove_compliments-view-source"><span>View Source</span></label> </div> <a class="headerlink" href="#remove_compliments"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="remove_compliments-224"><a href="#remove_compliments-224"><span class="linenos">224</span></a><span class="k">def</span> <span class="nf">remove_compliments</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="remove_compliments-225"><a href="#remove_compliments-225"><span class="linenos">225</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="remove_compliments-226"><a href="#remove_compliments-226"><span class="linenos">226</span></a><span class="sd"> Removing compliments.</span> -</span><span id="remove_compliments-227"><a href="#remove_compliments-227"><span class="linenos">227</span></a> -</span><span id="remove_compliments-228"><a href="#remove_compliments-228"><span class="linenos">228</span></a><span class="sd"> A AND NOT A -> FALSE</span> -</span><span id="remove_compliments-229"><a href="#remove_compliments-229"><span class="linenos">229</span></a><span class="sd"> A OR NOT A -> TRUE</span> -</span><span id="remove_compliments-230"><a href="#remove_compliments-230"><span class="linenos">230</span></a><span class="sd"> """</span> -</span><span id="remove_compliments-231"><a href="#remove_compliments-231"><span class="linenos">231</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> -</span><span id="remove_compliments-232"><a href="#remove_compliments-232"><span class="linenos">232</span></a> <span class="n">compliment</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> -</span><span id="remove_compliments-233"><a href="#remove_compliments-233"><span class="linenos">233</span></a> -</span><span id="remove_compliments-234"><a href="#remove_compliments-234"><span class="linenos">234</span></a> <span class="k">for</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">permutations</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">(),</span> <span class="mi">2</span><span class="p">):</span> -</span><span id="remove_compliments-235"><a href="#remove_compliments-235"><span class="linenos">235</span></a> <span class="k">if</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> -</span><span id="remove_compliments-236"><a href="#remove_compliments-236"><span class="linenos">236</span></a> <span class="k">return</span> <span class="n">compliment</span> -</span><span id="remove_compliments-237"><a href="#remove_compliments-237"><span class="linenos">237</span></a> <span class="k">return</span> <span class="n">expression</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="remove_compliments-225"><a href="#remove_compliments-225"><span class="linenos">225</span></a><span class="k">def</span> <span class="nf">remove_compliments</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> +</span><span id="remove_compliments-226"><a href="#remove_compliments-226"><span class="linenos">226</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="remove_compliments-227"><a href="#remove_compliments-227"><span class="linenos">227</span></a><span class="sd"> Removing compliments.</span> +</span><span id="remove_compliments-228"><a href="#remove_compliments-228"><span class="linenos">228</span></a> +</span><span id="remove_compliments-229"><a href="#remove_compliments-229"><span class="linenos">229</span></a><span class="sd"> A AND NOT A -> FALSE</span> +</span><span id="remove_compliments-230"><a href="#remove_compliments-230"><span class="linenos">230</span></a><span class="sd"> A OR NOT A -> TRUE</span> +</span><span id="remove_compliments-231"><a href="#remove_compliments-231"><span class="linenos">231</span></a><span class="sd"> """</span> +</span><span id="remove_compliments-232"><a href="#remove_compliments-232"><span class="linenos">232</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="n">root</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">expression</span><span class="o">.</span><span class="n">same_parent</span><span class="p">):</span> +</span><span id="remove_compliments-233"><a href="#remove_compliments-233"><span class="linenos">233</span></a> <span class="n">compliment</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> +</span><span id="remove_compliments-234"><a href="#remove_compliments-234"><span class="linenos">234</span></a> +</span><span id="remove_compliments-235"><a href="#remove_compliments-235"><span class="linenos">235</span></a> <span class="k">for</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">permutations</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">(),</span> <span class="mi">2</span><span class="p">):</span> +</span><span id="remove_compliments-236"><a href="#remove_compliments-236"><span class="linenos">236</span></a> <span class="k">if</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> +</span><span id="remove_compliments-237"><a href="#remove_compliments-237"><span class="linenos">237</span></a> <span class="k">return</span> <span class="n">compliment</span> +</span><span id="remove_compliments-238"><a href="#remove_compliments-238"><span class="linenos">238</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -883,36 +905,36 @@ A OR NOT A -> TRUE</p> <div class="attr function"> <span class="def">def</span> - <span class="name">uniq_sort</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span> + <span class="name">uniq_sort</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span>, </span><span class="param"><span class="n">cache</span><span class="o">=</span><span class="kc">None</span>, </span><span class="param"><span class="n">root</span><span class="o">=</span><span class="kc">True</span></span><span class="return-annotation">):</span></span> <label class="view-source-button" for="uniq_sort-view-source"><span>View Source</span></label> </div> <a class="headerlink" href="#uniq_sort"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="uniq_sort-240"><a href="#uniq_sort-240"><span class="linenos">240</span></a><span class="k">def</span> <span class="nf">uniq_sort</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="uniq_sort-241"><a href="#uniq_sort-241"><span class="linenos">241</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="uniq_sort-242"><a href="#uniq_sort-242"><span class="linenos">242</span></a><span class="sd"> Uniq and sort a connector.</span> -</span><span id="uniq_sort-243"><a href="#uniq_sort-243"><span class="linenos">243</span></a> -</span><span id="uniq_sort-244"><a href="#uniq_sort-244"><span class="linenos">244</span></a><span class="sd"> C AND A AND B AND B -> A AND B AND C</span> -</span><span id="uniq_sort-245"><a href="#uniq_sort-245"><span class="linenos">245</span></a><span class="sd"> """</span> -</span><span id="uniq_sort-246"><a href="#uniq_sort-246"><span class="linenos">246</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> -</span><span id="uniq_sort-247"><a href="#uniq_sort-247"><span class="linenos">247</span></a> <span class="n">result_func</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span> -</span><span id="uniq_sort-248"><a href="#uniq_sort-248"><span class="linenos">248</span></a> <span class="n">flattened</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">())</span> -</span><span id="uniq_sort-249"><a href="#uniq_sort-249"><span class="linenos">249</span></a> <span class="n">deduped</span> <span class="o">=</span> <span class="p">{</span><span class="n">GENERATOR</span><span class="o">.</span><span class="n">generate</span><span class="p">(</span><span class="n">e</span><span class="p">):</span> <span class="n">e</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">flattened</span><span class="p">}</span> -</span><span id="uniq_sort-250"><a href="#uniq_sort-250"><span class="linenos">250</span></a> <span class="n">arr</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">deduped</span><span class="o">.</span><span class="n">items</span><span class="p">())</span> -</span><span id="uniq_sort-251"><a href="#uniq_sort-251"><span class="linenos">251</span></a> -</span><span id="uniq_sort-252"><a href="#uniq_sort-252"><span class="linenos">252</span></a> <span class="c1"># check if the operands are already sorted, if not sort them</span> -</span><span id="uniq_sort-253"><a href="#uniq_sort-253"><span class="linenos">253</span></a> <span class="c1"># A AND C AND B -> A AND B AND C</span> -</span><span id="uniq_sort-254"><a href="#uniq_sort-254"><span class="linenos">254</span></a> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="p">(</span><span class="n">sql</span><span class="p">,</span> <span class="n">e</span><span class="p">)</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">arr</span><span class="p">[</span><span class="mi">1</span><span class="p">:]):</span> -</span><span id="uniq_sort-255"><a href="#uniq_sort-255"><span class="linenos">255</span></a> <span class="k">if</span> <span class="n">sql</span> <span class="o"><</span> <span class="n">arr</span><span class="p">[</span><span class="n">i</span><span class="p">][</span><span class="mi">0</span><span class="p">]:</span> -</span><span id="uniq_sort-256"><a href="#uniq_sort-256"><span class="linenos">256</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">result_func</span><span class="p">(</span><span class="o">*</span><span class="p">(</span><span class="n">deduped</span><span class="p">[</span><span class="n">sql</span><span class="p">]</span> <span class="k">for</span> <span class="n">sql</span> <span class="ow">in</span> <span class="nb">sorted</span><span class="p">(</span><span class="n">deduped</span><span class="p">)))</span> -</span><span id="uniq_sort-257"><a href="#uniq_sort-257"><span class="linenos">257</span></a> <span class="k">break</span> -</span><span id="uniq_sort-258"><a href="#uniq_sort-258"><span class="linenos">258</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="uniq_sort-259"><a href="#uniq_sort-259"><span class="linenos">259</span></a> <span class="c1"># we didn't have to sort but maybe we need to dedup</span> -</span><span id="uniq_sort-260"><a href="#uniq_sort-260"><span class="linenos">260</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">deduped</span><span class="p">)</span> <span class="o"><</span> <span class="nb">len</span><span class="p">(</span><span class="n">flattened</span><span class="p">):</span> -</span><span id="uniq_sort-261"><a href="#uniq_sort-261"><span class="linenos">261</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">result_func</span><span class="p">(</span><span class="o">*</span><span class="n">deduped</span><span class="o">.</span><span class="n">values</span><span class="p">())</span> -</span><span id="uniq_sort-262"><a href="#uniq_sort-262"><span class="linenos">262</span></a> -</span><span id="uniq_sort-263"><a href="#uniq_sort-263"><span class="linenos">263</span></a> <span class="k">return</span> <span class="n">expression</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="uniq_sort-241"><a href="#uniq_sort-241"><span class="linenos">241</span></a><span class="k">def</span> <span class="nf">uniq_sort</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">cache</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> +</span><span id="uniq_sort-242"><a href="#uniq_sort-242"><span class="linenos">242</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="uniq_sort-243"><a href="#uniq_sort-243"><span class="linenos">243</span></a><span class="sd"> Uniq and sort a connector.</span> +</span><span id="uniq_sort-244"><a href="#uniq_sort-244"><span class="linenos">244</span></a> +</span><span id="uniq_sort-245"><a href="#uniq_sort-245"><span class="linenos">245</span></a><span class="sd"> C AND A AND B AND B -> A AND B AND C</span> +</span><span id="uniq_sort-246"><a href="#uniq_sort-246"><span class="linenos">246</span></a><span class="sd"> """</span> +</span><span id="uniq_sort-247"><a href="#uniq_sort-247"><span class="linenos">247</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="n">root</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">expression</span><span class="o">.</span><span class="n">same_parent</span><span class="p">):</span> +</span><span id="uniq_sort-248"><a href="#uniq_sort-248"><span class="linenos">248</span></a> <span class="n">result_func</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">or_</span> +</span><span id="uniq_sort-249"><a href="#uniq_sort-249"><span class="linenos">249</span></a> <span class="n">flattened</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">())</span> +</span><span id="uniq_sort-250"><a href="#uniq_sort-250"><span class="linenos">250</span></a> <span class="n">deduped</span> <span class="o">=</span> <span class="p">{</span><span class="n">GENERATOR</span><span class="o">.</span><span class="n">generate</span><span class="p">(</span><span class="n">e</span><span class="p">,</span> <span class="n">cache</span><span class="p">):</span> <span class="n">e</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">flattened</span><span class="p">}</span> +</span><span id="uniq_sort-251"><a href="#uniq_sort-251"><span class="linenos">251</span></a> <span class="n">arr</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">deduped</span><span class="o">.</span><span class="n">items</span><span class="p">())</span> +</span><span id="uniq_sort-252"><a href="#uniq_sort-252"><span class="linenos">252</span></a> +</span><span id="uniq_sort-253"><a href="#uniq_sort-253"><span class="linenos">253</span></a> <span class="c1"># check if the operands are already sorted, if not sort them</span> +</span><span id="uniq_sort-254"><a href="#uniq_sort-254"><span class="linenos">254</span></a> <span class="c1"># A AND C AND B -> A AND B AND C</span> +</span><span id="uniq_sort-255"><a href="#uniq_sort-255"><span class="linenos">255</span></a> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="p">(</span><span class="n">sql</span><span class="p">,</span> <span class="n">e</span><span class="p">)</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">arr</span><span class="p">[</span><span class="mi">1</span><span class="p">:]):</span> +</span><span id="uniq_sort-256"><a href="#uniq_sort-256"><span class="linenos">256</span></a> <span class="k">if</span> <span class="n">sql</span> <span class="o"><</span> <span class="n">arr</span><span class="p">[</span><span class="n">i</span><span class="p">][</span><span class="mi">0</span><span class="p">]:</span> +</span><span id="uniq_sort-257"><a href="#uniq_sort-257"><span class="linenos">257</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">result_func</span><span class="p">(</span><span class="o">*</span><span class="p">(</span><span class="n">e</span> <span class="k">for</span> <span class="n">_</span><span class="p">,</span> <span class="n">e</span> <span class="ow">in</span> <span class="nb">sorted</span><span class="p">(</span><span class="n">arr</span><span class="p">)))</span> +</span><span id="uniq_sort-258"><a href="#uniq_sort-258"><span class="linenos">258</span></a> <span class="k">break</span> +</span><span id="uniq_sort-259"><a href="#uniq_sort-259"><span class="linenos">259</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="uniq_sort-260"><a href="#uniq_sort-260"><span class="linenos">260</span></a> <span class="c1"># we didn't have to sort but maybe we need to dedup</span> +</span><span id="uniq_sort-261"><a href="#uniq_sort-261"><span class="linenos">261</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">deduped</span><span class="p">)</span> <span class="o"><</span> <span class="nb">len</span><span class="p">(</span><span class="n">flattened</span><span class="p">):</span> +</span><span id="uniq_sort-262"><a href="#uniq_sort-262"><span class="linenos">262</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">result_func</span><span class="p">(</span><span class="o">*</span><span class="n">deduped</span><span class="o">.</span><span class="n">values</span><span class="p">())</span> +</span><span id="uniq_sort-263"><a href="#uniq_sort-263"><span class="linenos">263</span></a> +</span><span id="uniq_sort-264"><a href="#uniq_sort-264"><span class="linenos">264</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -928,50 +950,50 @@ A OR NOT A -> TRUE</p> <div class="attr function"> <span class="def">def</span> - <span class="name">absorb_and_eliminate</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span> + <span class="name">absorb_and_eliminate</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span>, </span><span class="param"><span class="n">root</span><span class="o">=</span><span class="kc">True</span></span><span class="return-annotation">):</span></span> <label class="view-source-button" for="absorb_and_eliminate-view-source"><span>View Source</span></label> </div> <a class="headerlink" href="#absorb_and_eliminate"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="absorb_and_eliminate-266"><a href="#absorb_and_eliminate-266"><span class="linenos">266</span></a><span class="k">def</span> <span class="nf">absorb_and_eliminate</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="absorb_and_eliminate-267"><a href="#absorb_and_eliminate-267"><span class="linenos">267</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="absorb_and_eliminate-268"><a href="#absorb_and_eliminate-268"><span class="linenos">268</span></a><span class="sd"> absorption:</span> -</span><span id="absorb_and_eliminate-269"><a href="#absorb_and_eliminate-269"><span class="linenos">269</span></a><span class="sd"> A AND (A OR B) -> A</span> -</span><span id="absorb_and_eliminate-270"><a href="#absorb_and_eliminate-270"><span class="linenos">270</span></a><span class="sd"> A OR (A AND B) -> A</span> -</span><span id="absorb_and_eliminate-271"><a href="#absorb_and_eliminate-271"><span class="linenos">271</span></a><span class="sd"> A AND (NOT A OR B) -> A AND B</span> -</span><span id="absorb_and_eliminate-272"><a href="#absorb_and_eliminate-272"><span class="linenos">272</span></a><span class="sd"> A OR (NOT A AND B) -> A OR B</span> -</span><span id="absorb_and_eliminate-273"><a href="#absorb_and_eliminate-273"><span class="linenos">273</span></a><span class="sd"> elimination:</span> -</span><span id="absorb_and_eliminate-274"><a href="#absorb_and_eliminate-274"><span class="linenos">274</span></a><span class="sd"> (A AND B) OR (A AND NOT B) -> A</span> -</span><span id="absorb_and_eliminate-275"><a href="#absorb_and_eliminate-275"><span class="linenos">275</span></a><span class="sd"> (A OR B) AND (A OR NOT B) -> A</span> -</span><span id="absorb_and_eliminate-276"><a href="#absorb_and_eliminate-276"><span class="linenos">276</span></a><span class="sd"> """</span> -</span><span id="absorb_and_eliminate-277"><a href="#absorb_and_eliminate-277"><span class="linenos">277</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> -</span><span id="absorb_and_eliminate-278"><a href="#absorb_and_eliminate-278"><span class="linenos">278</span></a> <span class="n">kind</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> -</span><span id="absorb_and_eliminate-279"><a href="#absorb_and_eliminate-279"><span class="linenos">279</span></a> -</span><span id="absorb_and_eliminate-280"><a href="#absorb_and_eliminate-280"><span class="linenos">280</span></a> <span class="k">for</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">permutations</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">(),</span> <span class="mi">2</span><span class="p">):</span> -</span><span id="absorb_and_eliminate-281"><a href="#absorb_and_eliminate-281"><span class="linenos">281</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">kind</span><span class="p">):</span> -</span><span id="absorb_and_eliminate-282"><a href="#absorb_and_eliminate-282"><span class="linenos">282</span></a> <span class="n">aa</span><span class="p">,</span> <span class="n">ab</span> <span class="o">=</span> <span class="n">a</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">()</span> -</span><span id="absorb_and_eliminate-283"><a href="#absorb_and_eliminate-283"><span class="linenos">283</span></a> -</span><span id="absorb_and_eliminate-284"><a href="#absorb_and_eliminate-284"><span class="linenos">284</span></a> <span class="c1"># absorb</span> -</span><span id="absorb_and_eliminate-285"><a href="#absorb_and_eliminate-285"><span class="linenos">285</span></a> <span class="k">if</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">aa</span><span class="p">):</span> -</span><span id="absorb_and_eliminate-286"><a href="#absorb_and_eliminate-286"><span class="linenos">286</span></a> <span class="n">aa</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">kind</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">())</span> -</span><span id="absorb_and_eliminate-287"><a href="#absorb_and_eliminate-287"><span class="linenos">287</span></a> <span class="k">elif</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">ab</span><span class="p">):</span> -</span><span id="absorb_and_eliminate-288"><a href="#absorb_and_eliminate-288"><span class="linenos">288</span></a> <span class="n">ab</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">kind</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">())</span> -</span><span id="absorb_and_eliminate-289"><a href="#absorb_and_eliminate-289"><span class="linenos">289</span></a> <span class="k">elif</span> <span class="p">(</span><span class="nb">set</span><span class="p">(</span><span class="n">b</span><span class="o">.</span><span class="n">flatten</span><span class="p">())</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">kind</span><span class="p">)</span> <span class="k">else</span> <span class="p">{</span><span class="n">b</span><span class="p">})</span> <span class="o"><</span> <span class="nb">set</span><span class="p">(</span><span class="n">a</span><span class="o">.</span><span class="n">flatten</span><span class="p">()):</span> -</span><span id="absorb_and_eliminate-290"><a href="#absorb_and_eliminate-290"><span class="linenos">290</span></a> <span class="n">a</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">kind</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span> -</span><span id="absorb_and_eliminate-291"><a href="#absorb_and_eliminate-291"><span class="linenos">291</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">kind</span><span class="p">):</span> -</span><span id="absorb_and_eliminate-292"><a href="#absorb_and_eliminate-292"><span class="linenos">292</span></a> <span class="c1"># eliminate</span> -</span><span id="absorb_and_eliminate-293"><a href="#absorb_and_eliminate-293"><span class="linenos">293</span></a> <span class="n">rhs</span> <span class="o">=</span> <span class="n">b</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">()</span> -</span><span id="absorb_and_eliminate-294"><a href="#absorb_and_eliminate-294"><span class="linenos">294</span></a> <span class="n">ba</span><span class="p">,</span> <span class="n">bb</span> <span class="o">=</span> <span class="n">rhs</span> -</span><span id="absorb_and_eliminate-295"><a href="#absorb_and_eliminate-295"><span class="linenos">295</span></a> -</span><span id="absorb_and_eliminate-296"><a href="#absorb_and_eliminate-296"><span class="linenos">296</span></a> <span class="k">if</span> <span class="n">aa</span> <span class="ow">in</span> <span class="n">rhs</span> <span class="ow">and</span> <span class="p">(</span><span class="n">is_complement</span><span class="p">(</span><span class="n">ab</span><span class="p">,</span> <span class="n">ba</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">ab</span><span class="p">,</span> <span class="n">bb</span><span class="p">)):</span> -</span><span id="absorb_and_eliminate-297"><a href="#absorb_and_eliminate-297"><span class="linenos">297</span></a> <span class="n">a</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">aa</span><span class="p">)</span> -</span><span id="absorb_and_eliminate-298"><a href="#absorb_and_eliminate-298"><span class="linenos">298</span></a> <span class="n">b</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">aa</span><span class="p">)</span> -</span><span id="absorb_and_eliminate-299"><a href="#absorb_and_eliminate-299"><span class="linenos">299</span></a> <span class="k">elif</span> <span class="n">ab</span> <span class="ow">in</span> <span class="n">rhs</span> <span class="ow">and</span> <span class="p">(</span><span class="n">is_complement</span><span class="p">(</span><span class="n">aa</span><span class="p">,</span> <span class="n">ba</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">aa</span><span class="p">,</span> <span class="n">bb</span><span class="p">)):</span> -</span><span id="absorb_and_eliminate-300"><a href="#absorb_and_eliminate-300"><span class="linenos">300</span></a> <span class="n">a</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">ab</span><span class="p">)</span> -</span><span id="absorb_and_eliminate-301"><a href="#absorb_and_eliminate-301"><span class="linenos">301</span></a> <span class="n">b</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">ab</span><span class="p">)</span> -</span><span id="absorb_and_eliminate-302"><a href="#absorb_and_eliminate-302"><span class="linenos">302</span></a> -</span><span id="absorb_and_eliminate-303"><a href="#absorb_and_eliminate-303"><span class="linenos">303</span></a> <span class="k">return</span> <span class="n">expression</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="absorb_and_eliminate-267"><a href="#absorb_and_eliminate-267"><span class="linenos">267</span></a><span class="k">def</span> <span class="nf">absorb_and_eliminate</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> +</span><span id="absorb_and_eliminate-268"><a href="#absorb_and_eliminate-268"><span class="linenos">268</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="absorb_and_eliminate-269"><a href="#absorb_and_eliminate-269"><span class="linenos">269</span></a><span class="sd"> absorption:</span> +</span><span id="absorb_and_eliminate-270"><a href="#absorb_and_eliminate-270"><span class="linenos">270</span></a><span class="sd"> A AND (A OR B) -> A</span> +</span><span id="absorb_and_eliminate-271"><a href="#absorb_and_eliminate-271"><span class="linenos">271</span></a><span class="sd"> A OR (A AND B) -> A</span> +</span><span id="absorb_and_eliminate-272"><a href="#absorb_and_eliminate-272"><span class="linenos">272</span></a><span class="sd"> A AND (NOT A OR B) -> A AND B</span> +</span><span id="absorb_and_eliminate-273"><a href="#absorb_and_eliminate-273"><span class="linenos">273</span></a><span class="sd"> A OR (NOT A AND B) -> A OR B</span> +</span><span id="absorb_and_eliminate-274"><a href="#absorb_and_eliminate-274"><span class="linenos">274</span></a><span class="sd"> elimination:</span> +</span><span id="absorb_and_eliminate-275"><a href="#absorb_and_eliminate-275"><span class="linenos">275</span></a><span class="sd"> (A AND B) OR (A AND NOT B) -> A</span> +</span><span id="absorb_and_eliminate-276"><a href="#absorb_and_eliminate-276"><span class="linenos">276</span></a><span class="sd"> (A OR B) AND (A OR NOT B) -> A</span> +</span><span id="absorb_and_eliminate-277"><a href="#absorb_and_eliminate-277"><span class="linenos">277</span></a><span class="sd"> """</span> +</span><span id="absorb_and_eliminate-278"><a href="#absorb_and_eliminate-278"><span class="linenos">278</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="n">root</span> <span class="ow">or</span> <span class="ow">not</span> <span class="n">expression</span><span class="o">.</span><span class="n">same_parent</span><span class="p">):</span> +</span><span id="absorb_and_eliminate-279"><a href="#absorb_and_eliminate-279"><span class="linenos">279</span></a> <span class="n">kind</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">Or</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span><span class="p">)</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> +</span><span id="absorb_and_eliminate-280"><a href="#absorb_and_eliminate-280"><span class="linenos">280</span></a> +</span><span id="absorb_and_eliminate-281"><a href="#absorb_and_eliminate-281"><span class="linenos">281</span></a> <span class="k">for</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">permutations</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">flatten</span><span class="p">(),</span> <span class="mi">2</span><span class="p">):</span> +</span><span id="absorb_and_eliminate-282"><a href="#absorb_and_eliminate-282"><span class="linenos">282</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">kind</span><span class="p">):</span> +</span><span id="absorb_and_eliminate-283"><a href="#absorb_and_eliminate-283"><span class="linenos">283</span></a> <span class="n">aa</span><span class="p">,</span> <span class="n">ab</span> <span class="o">=</span> <span class="n">a</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">()</span> +</span><span id="absorb_and_eliminate-284"><a href="#absorb_and_eliminate-284"><span class="linenos">284</span></a> +</span><span id="absorb_and_eliminate-285"><a href="#absorb_and_eliminate-285"><span class="linenos">285</span></a> <span class="c1"># absorb</span> +</span><span id="absorb_and_eliminate-286"><a href="#absorb_and_eliminate-286"><span class="linenos">286</span></a> <span class="k">if</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">aa</span><span class="p">):</span> +</span><span id="absorb_and_eliminate-287"><a href="#absorb_and_eliminate-287"><span class="linenos">287</span></a> <span class="n">aa</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">kind</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">())</span> +</span><span id="absorb_and_eliminate-288"><a href="#absorb_and_eliminate-288"><span class="linenos">288</span></a> <span class="k">elif</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">ab</span><span class="p">):</span> +</span><span id="absorb_and_eliminate-289"><a href="#absorb_and_eliminate-289"><span class="linenos">289</span></a> <span class="n">ab</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">kind</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">())</span> +</span><span id="absorb_and_eliminate-290"><a href="#absorb_and_eliminate-290"><span class="linenos">290</span></a> <span class="k">elif</span> <span class="p">(</span><span class="nb">set</span><span class="p">(</span><span class="n">b</span><span class="o">.</span><span class="n">flatten</span><span class="p">())</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">kind</span><span class="p">)</span> <span class="k">else</span> <span class="p">{</span><span class="n">b</span><span class="p">})</span> <span class="o"><</span> <span class="nb">set</span><span class="p">(</span><span class="n">a</span><span class="o">.</span><span class="n">flatten</span><span class="p">()):</span> +</span><span id="absorb_and_eliminate-291"><a href="#absorb_and_eliminate-291"><span class="linenos">291</span></a> <span class="n">a</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> <span class="k">if</span> <span class="n">kind</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">And</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">())</span> +</span><span id="absorb_and_eliminate-292"><a href="#absorb_and_eliminate-292"><span class="linenos">292</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">kind</span><span class="p">):</span> +</span><span id="absorb_and_eliminate-293"><a href="#absorb_and_eliminate-293"><span class="linenos">293</span></a> <span class="c1"># eliminate</span> +</span><span id="absorb_and_eliminate-294"><a href="#absorb_and_eliminate-294"><span class="linenos">294</span></a> <span class="n">rhs</span> <span class="o">=</span> <span class="n">b</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">()</span> +</span><span id="absorb_and_eliminate-295"><a href="#absorb_and_eliminate-295"><span class="linenos">295</span></a> <span class="n">ba</span><span class="p">,</span> <span class="n">bb</span> <span class="o">=</span> <span class="n">rhs</span> +</span><span id="absorb_and_eliminate-296"><a href="#absorb_and_eliminate-296"><span class="linenos">296</span></a> +</span><span id="absorb_and_eliminate-297"><a href="#absorb_and_eliminate-297"><span class="linenos">297</span></a> <span class="k">if</span> <span class="n">aa</span> <span class="ow">in</span> <span class="n">rhs</span> <span class="ow">and</span> <span class="p">(</span><span class="n">is_complement</span><span class="p">(</span><span class="n">ab</span><span class="p">,</span> <span class="n">ba</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">ab</span><span class="p">,</span> <span class="n">bb</span><span class="p">)):</span> +</span><span id="absorb_and_eliminate-298"><a href="#absorb_and_eliminate-298"><span class="linenos">298</span></a> <span class="n">a</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">aa</span><span class="p">)</span> +</span><span id="absorb_and_eliminate-299"><a href="#absorb_and_eliminate-299"><span class="linenos">299</span></a> <span class="n">b</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">aa</span><span class="p">)</span> +</span><span id="absorb_and_eliminate-300"><a href="#absorb_and_eliminate-300"><span class="linenos">300</span></a> <span class="k">elif</span> <span class="n">ab</span> <span class="ow">in</span> <span class="n">rhs</span> <span class="ow">and</span> <span class="p">(</span><span class="n">is_complement</span><span class="p">(</span><span class="n">aa</span><span class="p">,</span> <span class="n">ba</span><span class="p">)</span> <span class="ow">or</span> <span class="n">is_complement</span><span class="p">(</span><span class="n">aa</span><span class="p">,</span> <span class="n">bb</span><span class="p">)):</span> +</span><span id="absorb_and_eliminate-301"><a href="#absorb_and_eliminate-301"><span class="linenos">301</span></a> <span class="n">a</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">ab</span><span class="p">)</span> +</span><span id="absorb_and_eliminate-302"><a href="#absorb_and_eliminate-302"><span class="linenos">302</span></a> <span class="n">b</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">ab</span><span class="p">)</span> +</span><span id="absorb_and_eliminate-303"><a href="#absorb_and_eliminate-303"><span class="linenos">303</span></a> +</span><span id="absorb_and_eliminate-304"><a href="#absorb_and_eliminate-304"><span class="linenos">304</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -992,24 +1014,24 @@ elimination: <div class="attr function"> <span class="def">def</span> - <span class="name">simplify_literals</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span></span><span class="return-annotation">):</span></span> + <span class="name">simplify_literals</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">expression</span>, </span><span class="param"><span class="n">root</span><span class="o">=</span><span class="kc">True</span></span><span class="return-annotation">):</span></span> <label class="view-source-button" for="simplify_literals-view-source"><span>View Source</span></label> </div> <a class="headerlink" href="#simplify_literals"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="simplify_literals-306"><a href="#simplify_literals-306"><span class="linenos">306</span></a><span class="k">def</span> <span class="nf">simplify_literals</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="simplify_literals-307"><a href="#simplify_literals-307"><span class="linenos">307</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">):</span> -</span><span id="simplify_literals-308"><a href="#simplify_literals-308"><span class="linenos">308</span></a> <span class="k">return</span> <span class="n">_flat_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">_simplify_binary</span><span class="p">)</span> -</span><span id="simplify_literals-309"><a href="#simplify_literals-309"><span class="linenos">309</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Neg</span><span class="p">):</span> -</span><span id="simplify_literals-310"><a href="#simplify_literals-310"><span class="linenos">310</span></a> <span class="n">this</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span> -</span><span id="simplify_literals-311"><a href="#simplify_literals-311"><span class="linenos">311</span></a> <span class="k">if</span> <span class="n">this</span><span class="o">.</span><span class="n">is_number</span><span class="p">:</span> -</span><span id="simplify_literals-312"><a href="#simplify_literals-312"><span class="linenos">312</span></a> <span class="n">value</span> <span class="o">=</span> <span class="n">this</span><span class="o">.</span><span class="n">name</span> -</span><span id="simplify_literals-313"><a href="#simplify_literals-313"><span class="linenos">313</span></a> <span class="k">if</span> <span class="n">value</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">==</span> <span class="s2">"-"</span><span class="p">:</span> -</span><span id="simplify_literals-314"><a href="#simplify_literals-314"><span class="linenos">314</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">value</span><span class="p">[</span><span class="mi">1</span><span class="p">:])</span> -</span><span id="simplify_literals-315"><a href="#simplify_literals-315"><span class="linenos">315</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="sa">f</span><span class="s2">"-</span><span class="si">{</span><span class="n">value</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="simplify_literals-316"><a href="#simplify_literals-316"><span class="linenos">316</span></a> -</span><span id="simplify_literals-317"><a href="#simplify_literals-317"><span class="linenos">317</span></a> <span class="k">return</span> <span class="n">expression</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="simplify_literals-307"><a href="#simplify_literals-307"><span class="linenos">307</span></a><span class="k">def</span> <span class="nf">simplify_literals</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">root</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> +</span><span id="simplify_literals-308"><a href="#simplify_literals-308"><span class="linenos">308</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Connector</span><span class="p">):</span> +</span><span id="simplify_literals-309"><a href="#simplify_literals-309"><span class="linenos">309</span></a> <span class="k">return</span> <span class="n">_flat_simplify</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">_simplify_binary</span><span class="p">,</span> <span class="n">root</span><span class="p">)</span> +</span><span id="simplify_literals-310"><a href="#simplify_literals-310"><span class="linenos">310</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Neg</span><span class="p">):</span> +</span><span id="simplify_literals-311"><a href="#simplify_literals-311"><span class="linenos">311</span></a> <span class="n">this</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span> +</span><span id="simplify_literals-312"><a href="#simplify_literals-312"><span class="linenos">312</span></a> <span class="k">if</span> <span class="n">this</span><span class="o">.</span><span class="n">is_number</span><span class="p">:</span> +</span><span id="simplify_literals-313"><a href="#simplify_literals-313"><span class="linenos">313</span></a> <span class="n">value</span> <span class="o">=</span> <span class="n">this</span><span class="o">.</span><span class="n">name</span> +</span><span id="simplify_literals-314"><a href="#simplify_literals-314"><span class="linenos">314</span></a> <span class="k">if</span> <span class="n">value</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="o">==</span> <span class="s2">"-"</span><span class="p">:</span> +</span><span id="simplify_literals-315"><a href="#simplify_literals-315"><span class="linenos">315</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">value</span><span class="p">[</span><span class="mi">1</span><span class="p">:])</span> +</span><span id="simplify_literals-316"><a href="#simplify_literals-316"><span class="linenos">316</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="sa">f</span><span class="s2">"-</span><span class="si">{</span><span class="n">value</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="simplify_literals-317"><a href="#simplify_literals-317"><span class="linenos">317</span></a> +</span><span id="simplify_literals-318"><a href="#simplify_literals-318"><span class="linenos">318</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -1027,18 +1049,18 @@ elimination: </div> <a class="headerlink" href="#simplify_parens"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="simplify_parens-379"><a href="#simplify_parens-379"><span class="linenos">379</span></a><span class="k">def</span> <span class="nf">simplify_parens</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="simplify_parens-380"><a href="#simplify_parens-380"><span class="linenos">380</span></a> <span class="k">if</span> <span class="p">(</span> -</span><span id="simplify_parens-381"><a href="#simplify_parens-381"><span class="linenos">381</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Paren</span><span class="p">)</span> -</span><span id="simplify_parens-382"><a href="#simplify_parens-382"><span class="linenos">382</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">)</span> -</span><span id="simplify_parens-383"><a href="#simplify_parens-383"><span class="linenos">383</span></a> <span class="ow">and</span> <span class="p">(</span> -</span><span id="simplify_parens-384"><a href="#simplify_parens-384"><span class="linenos">384</span></a> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">))</span> -</span><span id="simplify_parens-385"><a href="#simplify_parens-385"><span class="linenos">385</span></a> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Is</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Like</span><span class="p">))</span> -</span><span id="simplify_parens-386"><a href="#simplify_parens-386"><span class="linenos">386</span></a> <span class="ow">or</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">)</span> -</span><span id="simplify_parens-387"><a href="#simplify_parens-387"><span class="linenos">387</span></a> <span class="p">)</span> -</span><span id="simplify_parens-388"><a href="#simplify_parens-388"><span class="linenos">388</span></a> <span class="p">):</span> -</span><span id="simplify_parens-389"><a href="#simplify_parens-389"><span class="linenos">389</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span> -</span><span id="simplify_parens-390"><a href="#simplify_parens-390"><span class="linenos">390</span></a> <span class="k">return</span> <span class="n">expression</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="simplify_parens-380"><a href="#simplify_parens-380"><span class="linenos">380</span></a><span class="k">def</span> <span class="nf">simplify_parens</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="simplify_parens-381"><a href="#simplify_parens-381"><span class="linenos">381</span></a> <span class="k">if</span> <span class="p">(</span> +</span><span id="simplify_parens-382"><a href="#simplify_parens-382"><span class="linenos">382</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Paren</span><span class="p">)</span> +</span><span id="simplify_parens-383"><a href="#simplify_parens-383"><span class="linenos">383</span></a> <span class="ow">and</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">)</span> +</span><span id="simplify_parens-384"><a href="#simplify_parens-384"><span class="linenos">384</span></a> <span class="ow">and</span> <span class="p">(</span> +</span><span id="simplify_parens-385"><a href="#simplify_parens-385"><span class="linenos">385</span></a> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Condition</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">))</span> +</span><span id="simplify_parens-386"><a href="#simplify_parens-386"><span class="linenos">386</span></a> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Predicate</span><span class="p">)</span> +</span><span id="simplify_parens-387"><a href="#simplify_parens-387"><span class="linenos">387</span></a> <span class="ow">or</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Binary</span><span class="p">)</span> +</span><span id="simplify_parens-388"><a href="#simplify_parens-388"><span class="linenos">388</span></a> <span class="p">)</span> +</span><span id="simplify_parens-389"><a href="#simplify_parens-389"><span class="linenos">389</span></a> <span class="p">):</span> +</span><span id="simplify_parens-390"><a href="#simplify_parens-390"><span class="linenos">390</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span> +</span><span id="simplify_parens-391"><a href="#simplify_parens-391"><span class="linenos">391</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -1056,14 +1078,14 @@ elimination: </div> <a class="headerlink" href="#remove_where_true"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="remove_where_true-393"><a href="#remove_where_true-393"><span class="linenos">393</span></a><span class="k">def</span> <span class="nf">remove_where_true</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="remove_where_true-394"><a href="#remove_where_true-394"><span class="linenos">394</span></a> <span class="k">for</span> <span class="n">where</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Where</span><span class="p">):</span> -</span><span id="remove_where_true-395"><a href="#remove_where_true-395"><span class="linenos">395</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">where</span><span class="o">.</span><span class="n">this</span><span class="p">):</span> -</span><span id="remove_where_true-396"><a href="#remove_where_true-396"><span class="linenos">396</span></a> <span class="n">where</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"where"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> -</span><span id="remove_where_true-397"><a href="#remove_where_true-397"><span class="linenos">397</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">):</span> -</span><span id="remove_where_true-398"><a href="#remove_where_true-398"><span class="linenos">398</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on"</span><span class="p">)):</span> -</span><span id="remove_where_true-399"><a href="#remove_where_true-399"><span class="linenos">399</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"kind"</span><span class="p">,</span> <span class="s2">"CROSS"</span><span class="p">)</span> -</span><span id="remove_where_true-400"><a href="#remove_where_true-400"><span class="linenos">400</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"on"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="remove_where_true-394"><a href="#remove_where_true-394"><span class="linenos">394</span></a><span class="k">def</span> <span class="nf">remove_where_true</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="remove_where_true-395"><a href="#remove_where_true-395"><span class="linenos">395</span></a> <span class="k">for</span> <span class="n">where</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Where</span><span class="p">):</span> +</span><span id="remove_where_true-396"><a href="#remove_where_true-396"><span class="linenos">396</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">where</span><span class="o">.</span><span class="n">this</span><span class="p">):</span> +</span><span id="remove_where_true-397"><a href="#remove_where_true-397"><span class="linenos">397</span></a> <span class="n">where</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"where"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> +</span><span id="remove_where_true-398"><a href="#remove_where_true-398"><span class="linenos">398</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">):</span> +</span><span id="remove_where_true-399"><a href="#remove_where_true-399"><span class="linenos">399</span></a> <span class="k">if</span> <span class="n">always_true</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"on"</span><span class="p">)):</span> +</span><span id="remove_where_true-400"><a href="#remove_where_true-400"><span class="linenos">400</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"kind"</span><span class="p">,</span> <span class="s2">"CROSS"</span><span class="p">)</span> +</span><span id="remove_where_true-401"><a href="#remove_where_true-401"><span class="linenos">401</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"on"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> </span></pre></div> @@ -1081,8 +1103,10 @@ elimination: </div> <a class="headerlink" href="#always_true"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="always_true-403"><a href="#always_true-403"><span class="linenos">403</span></a><span class="k">def</span> <span class="nf">always_true</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="always_true-404"><a href="#always_true-404"><span class="linenos">404</span></a> <span class="k">return</span> <span class="n">expression</span> <span class="o">==</span> <span class="n">TRUE</span> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">)</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="always_true-404"><a href="#always_true-404"><span class="linenos">404</span></a><span class="k">def</span> <span class="nf">always_true</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="always_true-405"><a href="#always_true-405"><span class="linenos">405</span></a> <span class="k">return</span> <span class="p">(</span><span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Boolean</span><span class="p">)</span> <span class="ow">and</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span> +</span><span id="always_true-406"><a href="#always_true-406"><span class="linenos">406</span></a> <span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span> +</span><span id="always_true-407"><a href="#always_true-407"><span class="linenos">407</span></a> <span class="p">)</span> </span></pre></div> @@ -1100,8 +1124,46 @@ elimination: </div> <a class="headerlink" href="#is_complement"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="is_complement-407"><a href="#is_complement-407"><span class="linenos">407</span></a><span class="k">def</span> <span class="nf">is_complement</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> -</span><span id="is_complement-408"><a href="#is_complement-408"><span class="linenos">408</span></a> <span class="k">return</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">)</span> <span class="ow">and</span> <span class="n">b</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">a</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="is_complement-410"><a href="#is_complement-410"><span class="linenos">410</span></a><span class="k">def</span> <span class="nf">is_complement</span><span class="p">(</span><span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> +</span><span id="is_complement-411"><a href="#is_complement-411"><span class="linenos">411</span></a> <span class="k">return</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">b</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Not</span><span class="p">)</span> <span class="ow">and</span> <span class="n">b</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">a</span> +</span></pre></div> + + + + + </section> + <section id="is_false"> + <input id="is_false-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> +<div class="attr function"> + + <span class="def">def</span> + <span class="name">is_false</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">a</span><span class="p">:</span> <span class="n"><a href="../expressions.html#Expression">sqlglot.expressions.Expression</a></span></span><span class="return-annotation">) -> <span class="nb">bool</span>:</span></span> + + <label class="view-source-button" for="is_false-view-source"><span>View Source</span></label> + + </div> + <a class="headerlink" href="#is_false"></a> + <div class="pdoc-code codehilite"><pre><span></span><span id="is_false-414"><a href="#is_false-414"><span class="linenos">414</span></a><span class="k">def</span> <span class="nf">is_false</span><span class="p">(</span><span class="n">a</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bool</span><span class="p">:</span> +</span><span id="is_false-415"><a href="#is_false-415"><span class="linenos">415</span></a> <span class="k">return</span> <span class="nb">type</span><span class="p">(</span><span class="n">a</span><span class="p">)</span> <span class="ow">is</span> <span class="n">exp</span><span class="o">.</span><span class="n">Boolean</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">a</span><span class="o">.</span><span class="n">this</span> +</span></pre></div> + + + + + </section> + <section id="is_null"> + <input id="is_null-view-source" class="view-source-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> +<div class="attr function"> + + <span class="def">def</span> + <span class="name">is_null</span><span class="signature pdoc-code condensed">(<span class="param"><span class="n">a</span><span class="p">:</span> <span class="n"><a href="../expressions.html#Expression">sqlglot.expressions.Expression</a></span></span><span class="return-annotation">) -> <span class="nb">bool</span>:</span></span> + + <label class="view-source-button" for="is_null-view-source"><span>View Source</span></label> + + </div> + <a class="headerlink" href="#is_null"></a> + <div class="pdoc-code codehilite"><pre><span></span><span id="is_null-418"><a href="#is_null-418"><span class="linenos">418</span></a><span class="k">def</span> <span class="nf">is_null</span><span class="p">(</span><span class="n">a</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="nb">bool</span><span class="p">:</span> +</span><span id="is_null-419"><a href="#is_null-419"><span class="linenos">419</span></a> <span class="k">return</span> <span class="nb">type</span><span class="p">(</span><span class="n">a</span><span class="p">)</span> <span class="ow">is</span> <span class="n">exp</span><span class="o">.</span><span class="n">Null</span> </span></pre></div> @@ -1119,20 +1181,20 @@ elimination: </div> <a class="headerlink" href="#eval_boolean"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="eval_boolean-411"><a href="#eval_boolean-411"><span class="linenos">411</span></a><span class="k">def</span> <span class="nf">eval_boolean</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> -</span><span id="eval_boolean-412"><a href="#eval_boolean-412"><span class="linenos">412</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Is</span><span class="p">)):</span> -</span><span id="eval_boolean-413"><a href="#eval_boolean-413"><span class="linenos">413</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">==</span> <span class="n">b</span><span class="p">)</span> -</span><span id="eval_boolean-414"><a href="#eval_boolean-414"><span class="linenos">414</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">NEQ</span><span class="p">):</span> -</span><span id="eval_boolean-415"><a href="#eval_boolean-415"><span class="linenos">415</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">!=</span> <span class="n">b</span><span class="p">)</span> -</span><span id="eval_boolean-416"><a href="#eval_boolean-416"><span class="linenos">416</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">):</span> -</span><span id="eval_boolean-417"><a href="#eval_boolean-417"><span class="linenos">417</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">></span> <span class="n">b</span><span class="p">)</span> -</span><span id="eval_boolean-418"><a href="#eval_boolean-418"><span class="linenos">418</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">):</span> -</span><span id="eval_boolean-419"><a href="#eval_boolean-419"><span class="linenos">419</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">>=</span> <span class="n">b</span><span class="p">)</span> -</span><span id="eval_boolean-420"><a href="#eval_boolean-420"><span class="linenos">420</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">):</span> -</span><span id="eval_boolean-421"><a href="#eval_boolean-421"><span class="linenos">421</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o"><</span> <span class="n">b</span><span class="p">)</span> -</span><span id="eval_boolean-422"><a href="#eval_boolean-422"><span class="linenos">422</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">):</span> -</span><span id="eval_boolean-423"><a href="#eval_boolean-423"><span class="linenos">423</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o"><=</span> <span class="n">b</span><span class="p">)</span> -</span><span id="eval_boolean-424"><a href="#eval_boolean-424"><span class="linenos">424</span></a> <span class="k">return</span> <span class="kc">None</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="eval_boolean-422"><a href="#eval_boolean-422"><span class="linenos">422</span></a><span class="k">def</span> <span class="nf">eval_boolean</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">a</span><span class="p">,</span> <span class="n">b</span><span class="p">):</span> +</span><span id="eval_boolean-423"><a href="#eval_boolean-423"><span class="linenos">423</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Is</span><span class="p">)):</span> +</span><span id="eval_boolean-424"><a href="#eval_boolean-424"><span class="linenos">424</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">==</span> <span class="n">b</span><span class="p">)</span> +</span><span id="eval_boolean-425"><a href="#eval_boolean-425"><span class="linenos">425</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">NEQ</span><span class="p">):</span> +</span><span id="eval_boolean-426"><a href="#eval_boolean-426"><span class="linenos">426</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">!=</span> <span class="n">b</span><span class="p">)</span> +</span><span id="eval_boolean-427"><a href="#eval_boolean-427"><span class="linenos">427</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GT</span><span class="p">):</span> +</span><span id="eval_boolean-428"><a href="#eval_boolean-428"><span class="linenos">428</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">></span> <span class="n">b</span><span class="p">)</span> +</span><span id="eval_boolean-429"><a href="#eval_boolean-429"><span class="linenos">429</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">GTE</span><span class="p">):</span> +</span><span id="eval_boolean-430"><a href="#eval_boolean-430"><span class="linenos">430</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o">>=</span> <span class="n">b</span><span class="p">)</span> +</span><span id="eval_boolean-431"><a href="#eval_boolean-431"><span class="linenos">431</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LT</span><span class="p">):</span> +</span><span id="eval_boolean-432"><a href="#eval_boolean-432"><span class="linenos">432</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o"><</span> <span class="n">b</span><span class="p">)</span> +</span><span id="eval_boolean-433"><a href="#eval_boolean-433"><span class="linenos">433</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">LTE</span><span class="p">):</span> +</span><span id="eval_boolean-434"><a href="#eval_boolean-434"><span class="linenos">434</span></a> <span class="k">return</span> <span class="n">boolean_literal</span><span class="p">(</span><span class="n">a</span> <span class="o"><=</span> <span class="n">b</span><span class="p">)</span> +</span><span id="eval_boolean-435"><a href="#eval_boolean-435"><span class="linenos">435</span></a> <span class="k">return</span> <span class="kc">None</span> </span></pre></div> @@ -1150,16 +1212,16 @@ elimination: </div> <a class="headerlink" href="#extract_date"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="extract_date-427"><a href="#extract_date-427"><span class="linenos">427</span></a><span class="k">def</span> <span class="nf">extract_date</span><span class="p">(</span><span class="n">cast</span><span class="p">):</span> -</span><span id="extract_date-428"><a href="#extract_date-428"><span class="linenos">428</span></a> <span class="c1"># The "fromisoformat" conversion could fail if the cast is used on an identifier,</span> -</span><span id="extract_date-429"><a href="#extract_date-429"><span class="linenos">429</span></a> <span class="c1"># so in that case we can't extract the date.</span> -</span><span id="extract_date-430"><a href="#extract_date-430"><span class="linenos">430</span></a> <span class="k">try</span><span class="p">:</span> -</span><span id="extract_date-431"><a href="#extract_date-431"><span class="linenos">431</span></a> <span class="k">if</span> <span class="n">cast</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"to"</span><span class="p">]</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">:</span> -</span><span id="extract_date-432"><a href="#extract_date-432"><span class="linenos">432</span></a> <span class="k">return</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="o">.</span><span class="n">fromisoformat</span><span class="p">(</span><span class="n">cast</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> -</span><span id="extract_date-433"><a href="#extract_date-433"><span class="linenos">433</span></a> <span class="k">if</span> <span class="n">cast</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"to"</span><span class="p">]</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</span><span class="p">:</span> -</span><span id="extract_date-434"><a href="#extract_date-434"><span class="linenos">434</span></a> <span class="k">return</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="o">.</span><span class="n">fromisoformat</span><span class="p">(</span><span class="n">cast</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> -</span><span id="extract_date-435"><a href="#extract_date-435"><span class="linenos">435</span></a> <span class="k">except</span> <span class="ne">ValueError</span><span class="p">:</span> -</span><span id="extract_date-436"><a href="#extract_date-436"><span class="linenos">436</span></a> <span class="k">return</span> <span class="kc">None</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="extract_date-438"><a href="#extract_date-438"><span class="linenos">438</span></a><span class="k">def</span> <span class="nf">extract_date</span><span class="p">(</span><span class="n">cast</span><span class="p">):</span> +</span><span id="extract_date-439"><a href="#extract_date-439"><span class="linenos">439</span></a> <span class="c1"># The "fromisoformat" conversion could fail if the cast is used on an identifier,</span> +</span><span id="extract_date-440"><a href="#extract_date-440"><span class="linenos">440</span></a> <span class="c1"># so in that case we can't extract the date.</span> +</span><span id="extract_date-441"><a href="#extract_date-441"><span class="linenos">441</span></a> <span class="k">try</span><span class="p">:</span> +</span><span id="extract_date-442"><a href="#extract_date-442"><span class="linenos">442</span></a> <span class="k">if</span> <span class="n">cast</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"to"</span><span class="p">]</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATE</span><span class="p">:</span> +</span><span id="extract_date-443"><a href="#extract_date-443"><span class="linenos">443</span></a> <span class="k">return</span> <span class="n">datetime</span><span class="o">.</span><span class="n">date</span><span class="o">.</span><span class="n">fromisoformat</span><span class="p">(</span><span class="n">cast</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="extract_date-444"><a href="#extract_date-444"><span class="linenos">444</span></a> <span class="k">if</span> <span class="n">cast</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"to"</span><span class="p">]</span><span class="o">.</span><span class="n">this</span> <span class="o">==</span> <span class="n">exp</span><span class="o">.</span><span class="n">DataType</span><span class="o">.</span><span class="n">Type</span><span class="o">.</span><span class="n">DATETIME</span><span class="p">:</span> +</span><span id="extract_date-445"><a href="#extract_date-445"><span class="linenos">445</span></a> <span class="k">return</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="o">.</span><span class="n">fromisoformat</span><span class="p">(</span><span class="n">cast</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="extract_date-446"><a href="#extract_date-446"><span class="linenos">446</span></a> <span class="k">except</span> <span class="ne">ValueError</span><span class="p">:</span> +</span><span id="extract_date-447"><a href="#extract_date-447"><span class="linenos">447</span></a> <span class="k">return</span> <span class="kc">None</span> </span></pre></div> @@ -1177,24 +1239,24 @@ elimination: </div> <a class="headerlink" href="#extract_interval"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="extract_interval-439"><a href="#extract_interval-439"><span class="linenos">439</span></a><span class="k">def</span> <span class="nf">extract_interval</span><span class="p">(</span><span class="n">interval</span><span class="p">):</span> -</span><span id="extract_interval-440"><a href="#extract_interval-440"><span class="linenos">440</span></a> <span class="k">try</span><span class="p">:</span> -</span><span id="extract_interval-441"><a href="#extract_interval-441"><span class="linenos">441</span></a> <span class="kn">from</span> <span class="nn">dateutil.relativedelta</span> <span class="kn">import</span> <span class="n">relativedelta</span> <span class="c1"># type: ignore</span> -</span><span id="extract_interval-442"><a href="#extract_interval-442"><span class="linenos">442</span></a> <span class="k">except</span> <span class="ne">ModuleNotFoundError</span><span class="p">:</span> -</span><span id="extract_interval-443"><a href="#extract_interval-443"><span class="linenos">443</span></a> <span class="k">return</span> <span class="kc">None</span> -</span><span id="extract_interval-444"><a href="#extract_interval-444"><span class="linenos">444</span></a> -</span><span id="extract_interval-445"><a href="#extract_interval-445"><span class="linenos">445</span></a> <span class="n">n</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">interval</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> -</span><span id="extract_interval-446"><a href="#extract_interval-446"><span class="linenos">446</span></a> <span class="n">unit</span> <span class="o">=</span> <span class="n">interval</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="s2">"unit"</span><span class="p">)</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span> -</span><span id="extract_interval-447"><a href="#extract_interval-447"><span class="linenos">447</span></a> -</span><span id="extract_interval-448"><a href="#extract_interval-448"><span class="linenos">448</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"year"</span><span class="p">:</span> -</span><span id="extract_interval-449"><a href="#extract_interval-449"><span class="linenos">449</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">years</span><span class="o">=</span><span class="n">n</span><span class="p">)</span> -</span><span id="extract_interval-450"><a href="#extract_interval-450"><span class="linenos">450</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"month"</span><span class="p">:</span> -</span><span id="extract_interval-451"><a href="#extract_interval-451"><span class="linenos">451</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">months</span><span class="o">=</span><span class="n">n</span><span class="p">)</span> -</span><span id="extract_interval-452"><a href="#extract_interval-452"><span class="linenos">452</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"week"</span><span class="p">:</span> -</span><span id="extract_interval-453"><a href="#extract_interval-453"><span class="linenos">453</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">weeks</span><span class="o">=</span><span class="n">n</span><span class="p">)</span> -</span><span id="extract_interval-454"><a href="#extract_interval-454"><span class="linenos">454</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"day"</span><span class="p">:</span> -</span><span id="extract_interval-455"><a href="#extract_interval-455"><span class="linenos">455</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">days</span><span class="o">=</span><span class="n">n</span><span class="p">)</span> -</span><span id="extract_interval-456"><a href="#extract_interval-456"><span class="linenos">456</span></a> <span class="k">return</span> <span class="kc">None</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="extract_interval-450"><a href="#extract_interval-450"><span class="linenos">450</span></a><span class="k">def</span> <span class="nf">extract_interval</span><span class="p">(</span><span class="n">interval</span><span class="p">):</span> +</span><span id="extract_interval-451"><a href="#extract_interval-451"><span class="linenos">451</span></a> <span class="k">try</span><span class="p">:</span> +</span><span id="extract_interval-452"><a href="#extract_interval-452"><span class="linenos">452</span></a> <span class="kn">from</span> <span class="nn">dateutil.relativedelta</span> <span class="kn">import</span> <span class="n">relativedelta</span> <span class="c1"># type: ignore</span> +</span><span id="extract_interval-453"><a href="#extract_interval-453"><span class="linenos">453</span></a> <span class="k">except</span> <span class="ne">ModuleNotFoundError</span><span class="p">:</span> +</span><span id="extract_interval-454"><a href="#extract_interval-454"><span class="linenos">454</span></a> <span class="k">return</span> <span class="kc">None</span> +</span><span id="extract_interval-455"><a href="#extract_interval-455"><span class="linenos">455</span></a> +</span><span id="extract_interval-456"><a href="#extract_interval-456"><span class="linenos">456</span></a> <span class="n">n</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">interval</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="extract_interval-457"><a href="#extract_interval-457"><span class="linenos">457</span></a> <span class="n">unit</span> <span class="o">=</span> <span class="n">interval</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="s2">"unit"</span><span class="p">)</span><span class="o">.</span><span class="n">lower</span><span class="p">()</span> +</span><span id="extract_interval-458"><a href="#extract_interval-458"><span class="linenos">458</span></a> +</span><span id="extract_interval-459"><a href="#extract_interval-459"><span class="linenos">459</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"year"</span><span class="p">:</span> +</span><span id="extract_interval-460"><a href="#extract_interval-460"><span class="linenos">460</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">years</span><span class="o">=</span><span class="n">n</span><span class="p">)</span> +</span><span id="extract_interval-461"><a href="#extract_interval-461"><span class="linenos">461</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"month"</span><span class="p">:</span> +</span><span id="extract_interval-462"><a href="#extract_interval-462"><span class="linenos">462</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">months</span><span class="o">=</span><span class="n">n</span><span class="p">)</span> +</span><span id="extract_interval-463"><a href="#extract_interval-463"><span class="linenos">463</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"week"</span><span class="p">:</span> +</span><span id="extract_interval-464"><a href="#extract_interval-464"><span class="linenos">464</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">weeks</span><span class="o">=</span><span class="n">n</span><span class="p">)</span> +</span><span id="extract_interval-465"><a href="#extract_interval-465"><span class="linenos">465</span></a> <span class="k">if</span> <span class="n">unit</span> <span class="o">==</span> <span class="s2">"day"</span><span class="p">:</span> +</span><span id="extract_interval-466"><a href="#extract_interval-466"><span class="linenos">466</span></a> <span class="k">return</span> <span class="n">relativedelta</span><span class="p">(</span><span class="n">days</span><span class="o">=</span><span class="n">n</span><span class="p">)</span> +</span><span id="extract_interval-467"><a href="#extract_interval-467"><span class="linenos">467</span></a> <span class="k">return</span> <span class="kc">None</span> </span></pre></div> @@ -1212,11 +1274,11 @@ elimination: </div> <a class="headerlink" href="#date_literal"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="date_literal-459"><a href="#date_literal-459"><span class="linenos">459</span></a><span class="k">def</span> <span class="nf">date_literal</span><span class="p">(</span><span class="n">date</span><span class="p">):</span> -</span><span id="date_literal-460"><a href="#date_literal-460"><span class="linenos">460</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span> -</span><span id="date_literal-461"><a href="#date_literal-461"><span class="linenos">461</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">string</span><span class="p">(</span><span class="n">date</span><span class="p">),</span> -</span><span id="date_literal-462"><a href="#date_literal-462"><span class="linenos">462</span></a> <span class="s2">"DATETIME"</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">date</span><span class="p">,</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="p">)</span> <span class="k">else</span> <span class="s2">"DATE"</span><span class="p">,</span> -</span><span id="date_literal-463"><a href="#date_literal-463"><span class="linenos">463</span></a> <span class="p">)</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="date_literal-470"><a href="#date_literal-470"><span class="linenos">470</span></a><span class="k">def</span> <span class="nf">date_literal</span><span class="p">(</span><span class="n">date</span><span class="p">):</span> +</span><span id="date_literal-471"><a href="#date_literal-471"><span class="linenos">471</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span> +</span><span id="date_literal-472"><a href="#date_literal-472"><span class="linenos">472</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">string</span><span class="p">(</span><span class="n">date</span><span class="p">),</span> +</span><span id="date_literal-473"><a href="#date_literal-473"><span class="linenos">473</span></a> <span class="s2">"DATETIME"</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">date</span><span class="p">,</span> <span class="n">datetime</span><span class="o">.</span><span class="n">datetime</span><span class="p">)</span> <span class="k">else</span> <span class="s2">"DATE"</span><span class="p">,</span> +</span><span id="date_literal-474"><a href="#date_literal-474"><span class="linenos">474</span></a> <span class="p">)</span> </span></pre></div> @@ -1234,8 +1296,8 @@ elimination: </div> <a class="headerlink" href="#boolean_literal"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="boolean_literal-466"><a href="#boolean_literal-466"><span class="linenos">466</span></a><span class="k">def</span> <span class="nf">boolean_literal</span><span class="p">(</span><span class="n">condition</span><span class="p">):</span> -</span><span id="boolean_literal-467"><a href="#boolean_literal-467"><span class="linenos">467</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">condition</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="boolean_literal-477"><a href="#boolean_literal-477"><span class="linenos">477</span></a><span class="k">def</span> <span class="nf">boolean_literal</span><span class="p">(</span><span class="n">condition</span><span class="p">):</span> +</span><span id="boolean_literal-478"><a href="#boolean_literal-478"><span class="linenos">478</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">true</span><span class="p">()</span> <span class="k">if</span> <span class="n">condition</span> <span class="k">else</span> <span class="n">exp</span><span class="o">.</span><span class="n">false</span><span class="p">()</span> </span></pre></div> diff --git a/docs/sqlglot/optimizer/unnest_subqueries.html b/docs/sqlglot/optimizer/unnest_subqueries.html index 8c1c5f6..2f83825 100644 --- a/docs/sqlglot/optimizer/unnest_subqueries.html +++ b/docs/sqlglot/optimizer/unnest_subqueries.html @@ -3,7 +3,7 @@ <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> - <meta name="generator" content="pdoc 13.0.0"/> + <meta name="generator" content="pdoc 13.0.1"/> <title>sqlglot.optimizer.unnest_subqueries API documentation</title> <style>/*! * Bootstrap Reboot v5.0.0 (https://getbootstrap.com/) * Copyright 2011-2021 The Bootstrap Authors * Copyright 2011-2021 Twitter, Inc. * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE) * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md) */*,::after,::before{box-sizing:border-box}@media (prefers-reduced-motion:no-preference){:root{scroll-behavior:smooth}}body{margin:0;font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,"Noto Sans","Liberation Sans",sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color 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code{font-size:inherit;color:inherit;word-break:normal}code{font-size:.875em;color:#d63384;word-wrap:break-word}a>code{color:inherit}kbd{padding:.2rem .4rem;font-size:.875em;color:#fff;background-color:#212529;border-radius:.2rem}kbd kbd{padding:0;font-size:1em;font-weight:700}figure{margin:0 0 1rem}img,svg{vertical-align:middle}table{caption-side:bottom;border-collapse:collapse}caption{padding-top:.5rem;padding-bottom:.5rem;color:#6c757d;text-align:left}th{text-align:inherit;text-align:-webkit-match-parent}tbody,td,tfoot,th,thead,tr{border-color:inherit;border-style:solid;border-width:0}label{display:inline-block}button{border-radius:0}button:focus:not(:focus-visible){outline:0}button,input,optgroup,select,textarea{margin:0;font-family:inherit;font-size:inherit;line-height:inherit}button,select{text-transform:none}[role=button]{cursor:pointer}select{word-wrap:normal}select:disabled{opacity:1}[list]::-webkit-calendar-picker-indicator{display:none}[type=button],[type=reset],[type=submit],button{-webkit-appearance:button}[type=button]:not(:disabled),[type=reset]:not(:disabled),[type=submit]:not(:disabled),button:not(:disabled){cursor:pointer}::-moz-focus-inner{padding:0;border-style:none}textarea{resize:vertical}fieldset{min-width:0;padding:0;margin:0;border:0}legend{float:left;width:100%;padding:0;margin-bottom:.5rem;font-size:calc(1.275rem + .3vw);line-height:inherit}@media (min-width:1200px){legend{font-size:1.5rem}}legend+*{clear:left}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-fields-wrapper,::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute,::-webkit-datetime-edit-month-field,::-webkit-datetime-edit-text,::-webkit-datetime-edit-year-field{padding:0}::-webkit-inner-spin-button{height:auto}[type=search]{outline-offset:-2px;-webkit-appearance:textfield}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-color-swatch-wrapper{padding:0}::file-selector-button{font:inherit}::-webkit-file-upload-button{font:inherit;-webkit-appearance:button}output{display:inline-block}iframe{border:0}summary{display:list-item;cursor:pointer}progress{vertical-align:baseline}[hidden]{display:none!important}</style> @@ -28,8 +28,8 @@ - <h2>API Documentation</h2> - <ul class="memberlist"> + <h2>API Documentation</h2> + <ul class="memberlist"> <li> <a class="function" href="#unnest_subqueries">unnest_subqueries</a> </li> |