Merging upstream version 23.7.0.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 919 insertions, 900 deletions

diff --git a/docs/sqlglot/planner.html b/docs/sqlglot/planner.html
index 830722f..c40b0ff 100644
--- a/docs/sqlglot/planner.html
+++ b/docs/sqlglot/planner.html
@@ -109,6 +109,9 @@
                                 <a class="function" href="#Join.from_joins">from_joins</a>
                         </li>
                         <li>
+                                <a class="variable" href="#Join.source_name">source_name</a>
+                        </li>
+                        <li>
                                 <a class="variable" href="#Join.joins">joins</a>
                         </li>
                 </ul>
@@ -311,345 +314,347 @@
 </span><span id="L-118"><a href="#L-118"><span class="linenos">118</span></a>        <span class="k">if</span> <span class="n">joins</span><span class="p">:</span>
 </span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a>            <span class="n">join</span> <span class="o">=</span> <span class="n">Join</span><span class="o">.</span><span class="n">from_joins</span><span class="p">(</span><span class="n">joins</span><span class="p">,</span> <span class="n">ctes</span><span class="p">)</span>
 </span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a>            <span class="n">join</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
-</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">add_dependency</span><span class="p">(</span><span class="n">step</span><span class="p">)</span>
-</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">join</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="n">projections</span> <span class="o">=</span> <span class="p">[]</span>  <span class="c1"># final selects in this chain of steps representing a select</span>
-</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a>        <span class="n">operands</span> <span class="o">=</span> <span class="p">{}</span>  <span class="c1"># intermediate computations of agg funcs eg x + 1 in SUM(x + 1)</span>
-</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a>        <span class="n">aggregations</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span>
-</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a>        <span class="n">next_operand_name</span> <span class="o">=</span> <span class="n">name_sequence</span><span class="p">(</span><span class="s2">&quot;_a_&quot;</span><span class="p">)</span>
-</span><span id="L-128"><a href="#L-128"><span class="linenos">128</span></a>
-</span><span id="L-129"><a href="#L-129"><span class="linenos">129</span></a>        <span class="k">def</span> <span class="nf">extract_agg_operands</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
-</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a>            <span class="n">agg_funcs</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">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-131"><a href="#L-131"><span class="linenos">131</span></a>            <span class="k">if</span> <span class="n">agg_funcs</span><span class="p">:</span>
-</span><span id="L-132"><a href="#L-132"><span class="linenos">132</span></a>                <span class="n">aggregations</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">expression</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">for</span> <span class="n">agg</span> <span class="ow">in</span> <span class="n">agg_funcs</span><span class="p">:</span>
-</span><span id="L-135"><a href="#L-135"><span class="linenos">135</span></a>                <span class="k">for</span> <span class="n">operand</span> <span class="ow">in</span> <span class="n">agg</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="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">operand</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-137"><a href="#L-137"><span class="linenos">137</span></a>                        <span class="k">continue</span>
-</span><span id="L-138"><a href="#L-138"><span class="linenos">138</span></a>                    <span class="k">if</span> <span class="n">operand</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">operands</span><span class="p">:</span>
-</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a>                        <span class="n">operands</span><span class="p">[</span><span class="n">operand</span><span class="p">]</span> <span class="o">=</span> <span class="n">next_operand_name</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="n">operand</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">column</span><span class="p">(</span><span class="n">operands</span><span class="p">[</span><span class="n">operand</span><span class="p">],</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</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="nb">bool</span><span class="p">(</span><span class="n">agg_funcs</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="k">def</span> <span class="nf">set_ops_and_aggs</span><span class="p">(</span><span class="n">step</span><span class="p">):</span>
-</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">operands</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">alias</span><span class="p">(</span><span class="n">operand</span><span class="p">,</span> <span class="n">alias_</span><span class="p">)</span> <span class="k">for</span> <span class="n">operand</span><span class="p">,</span> <span class="n">alias_</span> <span class="ow">in</span> <span class="n">operands</span><span class="o">.</span><span class="n">items</span><span class="p">())</span>
-</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">aggregations</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">aggregations</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="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-150"><a href="#L-150"><span class="linenos">150</span></a>            <span class="k">if</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><span id="L-151"><a href="#L-151"><span class="linenos">151</span></a>                <span class="n">projections</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">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">step</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">))</span>
-</span><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a>                <span class="n">extract_agg_operands</span><span class="p">(</span><span class="n">e</span><span class="p">)</span>
-</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a>            <span class="k">else</span><span class="p">:</span>
-</span><span id="L-154"><a href="#L-154"><span class="linenos">154</span></a>                <span class="n">projections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">e</span><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">where</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">&quot;where&quot;</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">if</span> <span class="n">where</span><span class="p">:</span>
-</span><span id="L-159"><a href="#L-159"><span class="linenos">159</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">condition</span> <span class="o">=</span> <span class="n">where</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><span id="L-161"><a href="#L-161"><span class="linenos">161</span></a>        <span class="n">group</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">&quot;group&quot;</span><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">if</span> <span class="n">group</span> <span class="ow">or</span> <span class="n">aggregations</span><span class="p">:</span>
-</span><span id="L-164"><a href="#L-164"><span class="linenos">164</span></a>            <span class="n">aggregate</span> <span class="o">=</span> <span class="n">Aggregate</span><span class="p">()</span>
-</span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a>            <span class="n">aggregate</span><span class="o">.</span><span class="n">source</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
-</span><span id="L-166"><a href="#L-166"><span class="linenos">166</span></a>            <span class="n">aggregate</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</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">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">&quot;having&quot;</span><span class="p">)</span>
-</span><span id="L-169"><a href="#L-169"><span class="linenos">169</span></a>
-</span><span id="L-170"><a href="#L-170"><span class="linenos">170</span></a>            <span class="k">if</span> <span class="n">having</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="n">extract_agg_operands</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">having</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="s2">&quot;_h&quot;</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">)):</span>
-</span><span id="L-172"><a href="#L-172"><span class="linenos">172</span></a>                    <span class="n">aggregate</span><span class="o">.</span><span class="n">condition</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="s2">&quot;_h&quot;</span><span class="p">,</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
-</span><span id="L-173"><a href="#L-173"><span class="linenos">173</span></a>                <span class="k">else</span><span class="p">:</span>
-</span><span id="L-174"><a href="#L-174"><span class="linenos">174</span></a>                    <span class="n">aggregate</span><span class="o">.</span><span class="n">condition</span> <span class="o">=</span> <span class="n">having</span><span class="o">.</span><span class="n">this</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="n">set_ops_and_aggs</span><span class="p">(</span><span class="n">aggregate</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="c1"># give aggregates names and replace projections with references to them</span>
-</span><span id="L-179"><a href="#L-179"><span class="linenos">179</span></a>            <span class="n">aggregate</span><span class="o">.</span><span class="n">group</span> <span class="o">=</span> <span class="p">{</span>
-</span><span id="L-180"><a href="#L-180"><span class="linenos">180</span></a>                <span class="sa">f</span><span class="s2">&quot;_g</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">:</span> <span class="n">e</span> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">e</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">group</span><span class="o">.</span><span class="n">expressions</span> <span class="k">if</span> <span class="n">group</span> <span class="k">else</span> <span class="p">[])</span>
-</span><span id="L-181"><a href="#L-181"><span class="linenos">181</span></a>            <span class="p">}</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">intermediate</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">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 class="nb">str</span><span class="p">]</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">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="n">aggregate</span><span class="o">.</span><span class="n">group</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
-</span><span id="L-185"><a href="#L-185"><span class="linenos">185</span></a>                <span class="n">intermediate</span><span class="p">[</span><span class="n">v</span><span class="p">]</span> <span class="o">=</span> <span class="n">k</span>
-</span><span id="L-186"><a href="#L-186"><span class="linenos">186</span></a>                <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">v</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-187"><a href="#L-187"><span class="linenos">187</span></a>                    <span class="n">intermediate</span><span class="p">[</span><span class="n">v</span><span class="o">.</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">k</span>
-</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 class="k">for</span> <span class="n">projection</span> <span class="ow">in</span> <span class="n">projections</span><span class="p">:</span>
-</span><span id="L-190"><a href="#L-190"><span class="linenos">190</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="n">projection</span><span class="o">.</span><span class="n">walk</span><span class="p">():</span>
-</span><span id="L-191"><a href="#L-191"><span class="linenos">191</span></a>                    <span class="n">name</span> <span class="o">=</span> <span class="n">intermediate</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
-</span><span id="L-192"><a href="#L-192"><span class="linenos">192</span></a>                    <span class="k">if</span> <span class="n">name</span><span class="p">:</span>
-</span><span id="L-193"><a href="#L-193"><span class="linenos">193</span></a>                        <span class="n">node</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">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">))</span>
-</span><span id="L-194"><a href="#L-194"><span class="linenos">194</span></a>
-</span><span id="L-195"><a href="#L-195"><span class="linenos">195</span></a>            <span class="k">if</span> <span class="n">aggregate</span><span class="o">.</span><span class="n">condition</span><span class="p">:</span>
-</span><span id="L-196"><a href="#L-196"><span class="linenos">196</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="n">aggregate</span><span class="o">.</span><span class="n">condition</span><span class="o">.</span><span class="n">walk</span><span class="p">():</span>
-</span><span id="L-197"><a href="#L-197"><span class="linenos">197</span></a>                    <span class="n">name</span> <span class="o">=</span> <span class="n">intermediate</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> <span class="ow">or</span> <span class="n">intermediate</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-198"><a href="#L-198"><span class="linenos">198</span></a>                    <span class="k">if</span> <span class="n">name</span><span class="p">:</span>
-</span><span id="L-199"><a href="#L-199"><span class="linenos">199</span></a>                        <span class="n">node</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">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">))</span>
-</span><span id="L-200"><a href="#L-200"><span class="linenos">200</span></a>
-</span><span id="L-201"><a href="#L-201"><span class="linenos">201</span></a>            <span class="n">aggregate</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">step</span><span class="p">)</span>
-</span><span id="L-202"><a href="#L-202"><span class="linenos">202</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">aggregate</span>
-</span><span id="L-203"><a href="#L-203"><span class="linenos">203</span></a>
-</span><span id="L-204"><a href="#L-204"><span class="linenos">204</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">&quot;order&quot;</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="k">if</span> <span class="n">order</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">step</span><span class="p">,</span> <span class="n">Aggregate</span><span class="p">):</span>
-</span><span id="L-208"><a href="#L-208"><span class="linenos">208</span></a>                <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">ordered</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">order</span><span class="o">.</span><span class="n">expressions</span><span class="p">):</span>
-</span><span id="L-209"><a href="#L-209"><span class="linenos">209</span></a>                    <span class="k">if</span> <span class="n">extract_agg_operands</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">ordered</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="sa">f</span><span class="s2">&quot;_o_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">)):</span>
-</span><span id="L-210"><a href="#L-210"><span class="linenos">210</span></a>                        <span class="n">ordered</span><span class="o">.</span><span class="n">this</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">column</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;_o_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">,</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">))</span>
-</span><span id="L-211"><a href="#L-211"><span class="linenos">211</span></a>
-</span><span id="L-212"><a href="#L-212"><span class="linenos">212</span></a>                <span class="n">set_ops_and_aggs</span><span class="p">(</span><span class="n">aggregate</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="n">sort</span> <span class="o">=</span> <span class="n">Sort</span><span class="p">()</span>
-</span><span id="L-215"><a href="#L-215"><span class="linenos">215</span></a>            <span class="n">sort</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
-</span><span id="L-216"><a href="#L-216"><span class="linenos">216</span></a>            <span class="n">sort</span><span class="o">.</span><span class="n">key</span> <span class="o">=</span> <span class="n">order</span><span class="o">.</span><span class="n">expressions</span>
-</span><span id="L-217"><a href="#L-217"><span class="linenos">217</span></a>            <span class="n">sort</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">step</span><span class="p">)</span>
-</span><span id="L-218"><a href="#L-218"><span class="linenos">218</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">sort</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 class="n">step</span><span class="o">.</span><span class="n">projections</span> <span class="o">=</span> <span class="n">projections</span>
-</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">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">Select</span><span class="p">)</span> <span class="ow">and</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">&quot;distinct&quot;</span><span class="p">):</span>
-</span><span id="L-223"><a href="#L-223"><span class="linenos">223</span></a>            <span class="n">distinct</span> <span class="o">=</span> <span class="n">Aggregate</span><span class="p">()</span>
-</span><span id="L-224"><a href="#L-224"><span class="linenos">224</span></a>            <span class="n">distinct</span><span class="o">.</span><span class="n">source</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
-</span><span id="L-225"><a href="#L-225"><span class="linenos">225</span></a>            <span class="n">distinct</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
-</span><span id="L-226"><a href="#L-226"><span class="linenos">226</span></a>            <span class="n">distinct</span><span class="o">.</span><span class="n">group</span> <span class="o">=</span> <span class="p">{</span>
-</span><span id="L-227"><a href="#L-227"><span class="linenos">227</span></a>                <span class="n">e</span><span class="o">.</span><span class="n">alias_or_name</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">col</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 class="n">table</span><span class="o">=</span><span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">)</span>
-</span><span id="L-228"><a href="#L-228"><span class="linenos">228</span></a>                <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">projections</span> <span class="ow">or</span> <span class="n">expression</span><span class="o">.</span><span class="n">expressions</span>
-</span><span id="L-229"><a href="#L-229"><span class="linenos">229</span></a>            <span class="p">}</span>
-</span><span id="L-230"><a href="#L-230"><span class="linenos">230</span></a>            <span class="n">distinct</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">step</span><span class="p">)</span>
-</span><span id="L-231"><a href="#L-231"><span class="linenos">231</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">distinct</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="n">limit</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">&quot;limit&quot;</span><span class="p">)</span>
-</span><span id="L-234"><a href="#L-234"><span class="linenos">234</span></a>
-</span><span id="L-235"><a href="#L-235"><span class="linenos">235</span></a>        <span class="k">if</span> <span class="n">limit</span><span class="p">:</span>
-</span><span id="L-236"><a href="#L-236"><span class="linenos">236</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">limit</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">limit</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="s2">&quot;expression&quot;</span><span class="p">))</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="k">return</span> <span class="n">step</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">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
-</span><span id="L-241"><a href="#L-241"><span class="linenos">241</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">name</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><span id="L-242"><a href="#L-242"><span class="linenos">242</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">dependencies</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Set</span><span class="p">[</span><span class="n">Step</span><span class="p">]</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span>
-</span><span id="L-243"><a href="#L-243"><span class="linenos">243</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">dependents</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Set</span><span class="p">[</span><span class="n">Step</span><span class="p">]</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span>
-</span><span id="L-244"><a href="#L-244"><span class="linenos">244</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">projections</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">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">]</span> <span class="o">=</span> <span class="p">[]</span>
-</span><span id="L-245"><a href="#L-245"><span class="linenos">245</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">limit</span><span class="p">:</span> <span class="nb">float</span> <span class="o">=</span> <span class="n">math</span><span class="o">.</span><span class="n">inf</span>
-</span><span id="L-246"><a href="#L-246"><span class="linenos">246</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">condition</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="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</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="k">def</span> <span class="nf">add_dependency</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">dependency</span><span class="p">:</span> <span class="n">Step</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
-</span><span id="L-249"><a href="#L-249"><span class="linenos">249</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">dependencies</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">dependency</span><span class="p">)</span>
-</span><span id="L-250"><a href="#L-250"><span class="linenos">250</span></a>        <span class="n">dependency</span><span class="o">.</span><span class="n">dependents</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="bp">self</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="k">def</span> <span class="fm">__repr__</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
-</span><span id="L-253"><a href="#L-253"><span class="linenos">253</span></a>        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">to_s</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">def</span> <span class="nf">to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">level</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">0</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
-</span><span id="L-256"><a href="#L-256"><span class="linenos">256</span></a>        <span class="n">indent</span> <span class="o">=</span> <span class="s2">&quot;  &quot;</span> <span class="o">*</span> <span class="n">level</span>
-</span><span id="L-257"><a href="#L-257"><span class="linenos">257</span></a>        <span class="n">nested</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">    &quot;</span>
-</span><span id="L-258"><a href="#L-258"><span class="linenos">258</span></a>
-</span><span id="L-259"><a href="#L-259"><span class="linenos">259</span></a>        <span class="n">context</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_to_s</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">  &quot;</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="k">if</span> <span class="n">context</span><span class="p">:</span>
-</span><span id="L-262"><a href="#L-262"><span class="linenos">262</span></a>            <span class="n">context</span> <span class="o">=</span> <span class="p">[</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Context:&quot;</span><span class="p">]</span> <span class="o">+</span> <span class="n">context</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="n">lines</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 class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">- </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">id</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">,</span>
-</span><span id="L-266"><a href="#L-266"><span class="linenos">266</span></a>            <span class="o">*</span><span class="n">context</span><span class="p">,</span>
-</span><span id="L-267"><a href="#L-267"><span class="linenos">267</span></a>            <span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Projections:&quot;</span><span class="p">,</span>
-</span><span id="L-268"><a href="#L-268"><span class="linenos">268</span></a>        <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 class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">projections</span><span class="p">:</span>
-</span><span id="L-271"><a href="#L-271"><span class="linenos">271</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="n">expression</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</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="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">condition</span><span class="p">:</span>
-</span><span id="L-274"><a href="#L-274"><span class="linenos">274</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Condition: </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">condition</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</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="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">limit</span> <span class="ow">is</span> <span class="ow">not</span> <span class="n">math</span><span class="o">.</span><span class="n">inf</span><span class="p">:</span>
-</span><span id="L-277"><a href="#L-277"><span class="linenos">277</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Limit: </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">limit</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</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">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">dependencies</span><span class="p">:</span>
-</span><span id="L-280"><a href="#L-280"><span class="linenos">280</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Dependencies:&quot;</span><span class="p">)</span>
-</span><span id="L-281"><a href="#L-281"><span class="linenos">281</span></a>            <span class="k">for</span> <span class="n">dependency</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">dependencies</span><span class="p">:</span>
-</span><span id="L-282"><a href="#L-282"><span class="linenos">282</span></a>                <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s2">&quot;  &quot;</span> <span class="o">+</span> <span class="n">dependency</span><span class="o">.</span><span class="n">to_s</span><span class="p">(</span><span class="n">level</span> <span class="o">+</span> <span class="mi">1</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="k">return</span> <span class="s2">&quot;</span><span class="se">\n</span><span class="s2">&quot;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">lines</span><span class="p">)</span>
-</span><span id="L-285"><a href="#L-285"><span class="linenos">285</span></a>
-</span><span id="L-286"><a href="#L-286"><span class="linenos">286</span></a>    <span class="nd">@property</span>
-</span><span id="L-287"><a href="#L-287"><span class="linenos">287</span></a>    <span class="k">def</span> <span class="nf">type_name</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
-</span><span id="L-288"><a href="#L-288"><span class="linenos">288</span></a>        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="vm">__class__</span><span class="o">.</span><span class="vm">__name__</span>
-</span><span id="L-289"><a href="#L-289"><span class="linenos">289</span></a>
-</span><span id="L-290"><a href="#L-290"><span class="linenos">290</span></a>    <span class="nd">@property</span>
-</span><span id="L-291"><a href="#L-291"><span class="linenos">291</span></a>    <span class="k">def</span> <span class="nf">id</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
-</span><span id="L-292"><a href="#L-292"><span class="linenos">292</span></a>        <span class="n">name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">name</span>
-</span><span id="L-293"><a href="#L-293"><span class="linenos">293</span></a>        <span class="n">name</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">&quot; </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">&quot;</span> <span class="k">if</span> <span class="n">name</span> <span class="k">else</span> <span class="s2">&quot;&quot;</span>
-</span><span id="L-294"><a href="#L-294"><span class="linenos">294</span></a>        <span class="k">return</span> <span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">type_name</span><span class="si">}</span><span class="s2">:</span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2"> (</span><span class="si">{</span><span class="nb">id</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span><span class="si">}</span><span class="s2">)&quot;</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">def</span> <span class="nf">_to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">_indent</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
-</span><span id="L-297"><a href="#L-297"><span class="linenos">297</span></a>        <span class="k">return</span> <span class="p">[]</span>
-</span><span id="L-298"><a href="#L-298"><span class="linenos">298</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">source_name</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</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">add_dependency</span><span class="p">(</span><span class="n">step</span><span class="p">)</span>
+</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">join</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">projections</span> <span class="o">=</span> <span class="p">[]</span>  <span class="c1"># final selects in this chain of steps representing a select</span>
+</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a>        <span class="n">operands</span> <span class="o">=</span> <span class="p">{}</span>  <span class="c1"># intermediate computations of agg funcs eg x + 1 in SUM(x + 1)</span>
+</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a>        <span class="n">aggregations</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span>
+</span><span id="L-128"><a href="#L-128"><span class="linenos">128</span></a>        <span class="n">next_operand_name</span> <span class="o">=</span> <span class="n">name_sequence</span><span class="p">(</span><span class="s2">&quot;_a_&quot;</span><span class="p">)</span>
+</span><span id="L-129"><a href="#L-129"><span class="linenos">129</span></a>
+</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a>        <span class="k">def</span> <span class="nf">extract_agg_operands</span><span class="p">(</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">agg_funcs</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">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-132"><a href="#L-132"><span class="linenos">132</span></a>            <span class="k">if</span> <span class="n">agg_funcs</span><span class="p">:</span>
+</span><span id="L-133"><a href="#L-133"><span class="linenos">133</span></a>                <span class="n">aggregations</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">expression</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">for</span> <span class="n">agg</span> <span class="ow">in</span> <span class="n">agg_funcs</span><span class="p">:</span>
+</span><span id="L-136"><a href="#L-136"><span class="linenos">136</span></a>                <span class="k">for</span> <span class="n">operand</span> <span class="ow">in</span> <span class="n">agg</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="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">operand</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-138"><a href="#L-138"><span class="linenos">138</span></a>                        <span class="k">continue</span>
+</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a>                    <span class="k">if</span> <span class="n">operand</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">operands</span><span class="p">:</span>
+</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a>                        <span class="n">operands</span><span class="p">[</span><span class="n">operand</span><span class="p">]</span> <span class="o">=</span> <span class="n">next_operand_name</span><span class="p">()</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="n">operand</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">column</span><span class="p">(</span><span class="n">operands</span><span class="p">[</span><span class="n">operand</span><span class="p">],</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">))</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 class="k">return</span> <span class="nb">bool</span><span class="p">(</span><span class="n">agg_funcs</span><span class="p">)</span>
+</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">set_ops_and_aggs</span><span class="p">(</span><span class="n">step</span><span class="p">):</span>
+</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">operands</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">alias</span><span class="p">(</span><span class="n">operand</span><span class="p">,</span> <span class="n">alias_</span><span class="p">)</span> <span class="k">for</span> <span class="n">operand</span><span class="p">,</span> <span class="n">alias_</span> <span class="ow">in</span> <span class="n">operands</span><span class="o">.</span><span class="n">items</span><span class="p">())</span>
+</span><span id="L-148"><a href="#L-148"><span class="linenos">148</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">aggregations</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">aggregations</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="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-151"><a href="#L-151"><span class="linenos">151</span></a>            <span class="k">if</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><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a>                <span class="n">projections</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">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">step</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">))</span>
+</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a>                <span class="n">extract_agg_operands</span><span class="p">(</span><span class="n">e</span><span class="p">)</span>
+</span><span id="L-154"><a href="#L-154"><span class="linenos">154</span></a>            <span class="k">else</span><span class="p">:</span>
+</span><span id="L-155"><a href="#L-155"><span class="linenos">155</span></a>                <span class="n">projections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">e</span><span class="p">)</span>
+</span><span id="L-156"><a href="#L-156"><span class="linenos">156</span></a>
+</span><span id="L-157"><a href="#L-157"><span class="linenos">157</span></a>        <span class="n">where</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">&quot;where&quot;</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">if</span> <span class="n">where</span><span class="p">:</span>
+</span><span id="L-160"><a href="#L-160"><span class="linenos">160</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">condition</span> <span class="o">=</span> <span class="n">where</span><span class="o">.</span><span class="n">this</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="n">group</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">&quot;group&quot;</span><span class="p">)</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">if</span> <span class="n">group</span> <span class="ow">or</span> <span class="n">aggregations</span><span class="p">:</span>
+</span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a>            <span class="n">aggregate</span> <span class="o">=</span> <span class="n">Aggregate</span><span class="p">()</span>
+</span><span id="L-166"><a href="#L-166"><span class="linenos">166</span></a>            <span class="n">aggregate</span><span class="o">.</span><span class="n">source</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
+</span><span id="L-167"><a href="#L-167"><span class="linenos">167</span></a>            <span class="n">aggregate</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</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">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">&quot;having&quot;</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="k">if</span> <span class="n">having</span><span class="p">:</span>
+</span><span id="L-172"><a href="#L-172"><span class="linenos">172</span></a>                <span class="k">if</span> <span class="n">extract_agg_operands</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">having</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="s2">&quot;_h&quot;</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">)):</span>
+</span><span id="L-173"><a href="#L-173"><span class="linenos">173</span></a>                    <span class="n">aggregate</span><span class="o">.</span><span class="n">condition</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="s2">&quot;_h&quot;</span><span class="p">,</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
+</span><span id="L-174"><a href="#L-174"><span class="linenos">174</span></a>                <span class="k">else</span><span class="p">:</span>
+</span><span id="L-175"><a href="#L-175"><span class="linenos">175</span></a>                    <span class="n">aggregate</span><span class="o">.</span><span class="n">condition</span> <span class="o">=</span> <span class="n">having</span><span class="o">.</span><span class="n">this</span>
+</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="n">set_ops_and_aggs</span><span class="p">(</span><span class="n">aggregate</span><span class="p">)</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="c1"># give aggregates names and replace projections with references to them</span>
+</span><span id="L-180"><a href="#L-180"><span class="linenos">180</span></a>            <span class="n">aggregate</span><span class="o">.</span><span class="n">group</span> <span class="o">=</span> <span class="p">{</span>
+</span><span id="L-181"><a href="#L-181"><span class="linenos">181</span></a>                <span class="sa">f</span><span class="s2">&quot;_g</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">:</span> <span class="n">e</span> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">e</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">group</span><span class="o">.</span><span class="n">expressions</span> <span class="k">if</span> <span class="n">group</span> <span class="k">else</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><span id="L-184"><a href="#L-184"><span class="linenos">184</span></a>            <span class="n">intermediate</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">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 class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="p">{}</span>
+</span><span id="L-185"><a href="#L-185"><span class="linenos">185</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">aggregate</span><span class="o">.</span><span class="n">group</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
+</span><span id="L-186"><a href="#L-186"><span class="linenos">186</span></a>                <span class="n">intermediate</span><span class="p">[</span><span class="n">v</span><span class="p">]</span> <span class="o">=</span> <span class="n">k</span>
+</span><span id="L-187"><a href="#L-187"><span class="linenos">187</span></a>                <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">v</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-188"><a href="#L-188"><span class="linenos">188</span></a>                    <span class="n">intermediate</span><span class="p">[</span><span class="n">v</span><span class="o">.</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">k</span>
+</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">for</span> <span class="n">projection</span> <span class="ow">in</span> <span class="n">projections</span><span class="p">:</span>
+</span><span id="L-191"><a href="#L-191"><span class="linenos">191</span></a>                <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">projection</span><span class="o">.</span><span class="n">walk</span><span class="p">():</span>
+</span><span id="L-192"><a href="#L-192"><span class="linenos">192</span></a>                    <span class="n">name</span> <span class="o">=</span> <span class="n">intermediate</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
+</span><span id="L-193"><a href="#L-193"><span class="linenos">193</span></a>                    <span class="k">if</span> <span class="n">name</span><span class="p">:</span>
+</span><span id="L-194"><a href="#L-194"><span class="linenos">194</span></a>                        <span class="n">node</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">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">))</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">if</span> <span class="n">aggregate</span><span class="o">.</span><span class="n">condition</span><span class="p">:</span>
+</span><span id="L-197"><a href="#L-197"><span class="linenos">197</span></a>                <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">aggregate</span><span class="o">.</span><span class="n">condition</span><span class="o">.</span><span class="n">walk</span><span class="p">():</span>
+</span><span id="L-198"><a href="#L-198"><span class="linenos">198</span></a>                    <span class="n">name</span> <span class="o">=</span> <span class="n">intermediate</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> <span class="ow">or</span> <span class="n">intermediate</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-199"><a href="#L-199"><span class="linenos">199</span></a>                    <span class="k">if</span> <span class="n">name</span><span class="p">:</span>
+</span><span id="L-200"><a href="#L-200"><span class="linenos">200</span></a>                        <span class="n">node</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">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">step</span><span class="o">.</span><span class="n">name</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="n">aggregate</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">step</span><span class="p">)</span>
+</span><span id="L-203"><a href="#L-203"><span class="linenos">203</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">aggregate</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">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">&quot;order&quot;</span><span class="p">)</span>
+</span><span id="L-206"><a href="#L-206"><span class="linenos">206</span></a>
+</span><span id="L-207"><a href="#L-207"><span class="linenos">207</span></a>        <span class="k">if</span> <span class="n">order</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="nb">isinstance</span><span class="p">(</span><span class="n">step</span><span class="p">,</span> <span class="n">Aggregate</span><span class="p">):</span>
+</span><span id="L-209"><a href="#L-209"><span class="linenos">209</span></a>                <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">ordered</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">order</span><span class="o">.</span><span class="n">expressions</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="n">extract_agg_operands</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">ordered</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="sa">f</span><span class="s2">&quot;_o_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">)):</span>
+</span><span id="L-211"><a href="#L-211"><span class="linenos">211</span></a>                        <span class="n">ordered</span><span class="o">.</span><span class="n">this</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">column</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;_o_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">,</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">))</span>
+</span><span id="L-212"><a href="#L-212"><span class="linenos">212</span></a>
+</span><span id="L-213"><a href="#L-213"><span class="linenos">213</span></a>                <span class="n">set_ops_and_aggs</span><span class="p">(</span><span class="n">aggregate</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="n">sort</span> <span class="o">=</span> <span class="n">Sort</span><span class="p">()</span>
+</span><span id="L-216"><a href="#L-216"><span class="linenos">216</span></a>            <span class="n">sort</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
+</span><span id="L-217"><a href="#L-217"><span class="linenos">217</span></a>            <span class="n">sort</span><span class="o">.</span><span class="n">key</span> <span class="o">=</span> <span class="n">order</span><span class="o">.</span><span class="n">expressions</span>
+</span><span id="L-218"><a href="#L-218"><span class="linenos">218</span></a>            <span class="n">sort</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">step</span><span class="p">)</span>
+</span><span id="L-219"><a href="#L-219"><span class="linenos">219</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">sort</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">step</span><span class="o">.</span><span class="n">projections</span> <span class="o">=</span> <span class="n">projections</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="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">Select</span><span class="p">)</span> <span class="ow">and</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">&quot;distinct&quot;</span><span class="p">):</span>
+</span><span id="L-224"><a href="#L-224"><span class="linenos">224</span></a>            <span class="n">distinct</span> <span class="o">=</span> <span class="n">Aggregate</span><span class="p">()</span>
+</span><span id="L-225"><a href="#L-225"><span class="linenos">225</span></a>            <span class="n">distinct</span><span class="o">.</span><span class="n">source</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
+</span><span id="L-226"><a href="#L-226"><span class="linenos">226</span></a>            <span class="n">distinct</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
+</span><span id="L-227"><a href="#L-227"><span class="linenos">227</span></a>            <span class="n">distinct</span><span class="o">.</span><span class="n">group</span> <span class="o">=</span> <span class="p">{</span>
+</span><span id="L-228"><a href="#L-228"><span class="linenos">228</span></a>                <span class="n">e</span><span class="o">.</span><span class="n">alias_or_name</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">col</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 class="n">table</span><span class="o">=</span><span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">)</span>
+</span><span id="L-229"><a href="#L-229"><span class="linenos">229</span></a>                <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">projections</span> <span class="ow">or</span> <span class="n">expression</span><span class="o">.</span><span class="n">expressions</span>
+</span><span id="L-230"><a href="#L-230"><span class="linenos">230</span></a>            <span class="p">}</span>
+</span><span id="L-231"><a href="#L-231"><span class="linenos">231</span></a>            <span class="n">distinct</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">step</span><span class="p">)</span>
+</span><span id="L-232"><a href="#L-232"><span class="linenos">232</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">distinct</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="n">limit</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">&quot;limit&quot;</span><span class="p">)</span>
+</span><span id="L-235"><a href="#L-235"><span class="linenos">235</span></a>
+</span><span id="L-236"><a href="#L-236"><span class="linenos">236</span></a>        <span class="k">if</span> <span class="n">limit</span><span class="p">:</span>
+</span><span id="L-237"><a href="#L-237"><span class="linenos">237</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">limit</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">limit</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="s2">&quot;expression&quot;</span><span class="p">))</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">return</span> <span class="n">step</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="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
+</span><span id="L-242"><a href="#L-242"><span class="linenos">242</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">name</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><span id="L-243"><a href="#L-243"><span class="linenos">243</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">dependencies</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Set</span><span class="p">[</span><span class="n">Step</span><span class="p">]</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span>
+</span><span id="L-244"><a href="#L-244"><span class="linenos">244</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">dependents</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Set</span><span class="p">[</span><span class="n">Step</span><span class="p">]</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span>
+</span><span id="L-245"><a href="#L-245"><span class="linenos">245</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">projections</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">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">]</span> <span class="o">=</span> <span class="p">[]</span>
+</span><span id="L-246"><a href="#L-246"><span class="linenos">246</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">limit</span><span class="p">:</span> <span class="nb">float</span> <span class="o">=</span> <span class="n">math</span><span class="o">.</span><span class="n">inf</span>
+</span><span id="L-247"><a href="#L-247"><span class="linenos">247</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">condition</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="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</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="nf">add_dependency</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">dependency</span><span class="p">:</span> <span class="n">Step</span><span class="p">)</span> <span class="o">-&gt;</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">dependencies</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">dependency</span><span class="p">)</span>
+</span><span id="L-251"><a href="#L-251"><span class="linenos">251</span></a>        <span class="n">dependency</span><span class="o">.</span><span class="n">dependents</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span>
+</span><span id="L-252"><a href="#L-252"><span class="linenos">252</span></a>
+</span><span id="L-253"><a href="#L-253"><span class="linenos">253</span></a>    <span class="k">def</span> <span class="fm">__repr__</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
+</span><span id="L-254"><a href="#L-254"><span class="linenos">254</span></a>        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">to_s</span><span class="p">()</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">to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">level</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">0</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
+</span><span id="L-257"><a href="#L-257"><span class="linenos">257</span></a>        <span class="n">indent</span> <span class="o">=</span> <span class="s2">&quot;  &quot;</span> <span class="o">*</span> <span class="n">level</span>
+</span><span id="L-258"><a href="#L-258"><span class="linenos">258</span></a>        <span class="n">nested</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">    &quot;</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">context</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_to_s</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">  &quot;</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">if</span> <span class="n">context</span><span class="p">:</span>
+</span><span id="L-263"><a href="#L-263"><span class="linenos">263</span></a>            <span class="n">context</span> <span class="o">=</span> <span class="p">[</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Context:&quot;</span><span class="p">]</span> <span class="o">+</span> <span class="n">context</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="n">lines</span> <span class="o">=</span> <span class="p">[</span>
+</span><span id="L-266"><a href="#L-266"><span class="linenos">266</span></a>            <span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">- </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">id</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">,</span>
+</span><span id="L-267"><a href="#L-267"><span class="linenos">267</span></a>            <span class="o">*</span><span class="n">context</span><span class="p">,</span>
+</span><span id="L-268"><a href="#L-268"><span class="linenos">268</span></a>            <span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Projections:&quot;</span><span class="p">,</span>
+</span><span id="L-269"><a href="#L-269"><span class="linenos">269</span></a>        <span class="p">]</span>
+</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">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">projections</span><span class="p">:</span>
+</span><span id="L-272"><a href="#L-272"><span class="linenos">272</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="n">expression</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</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="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">condition</span><span class="p">:</span>
+</span><span id="L-275"><a href="#L-275"><span class="linenos">275</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Condition: </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">condition</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</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">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">limit</span> <span class="ow">is</span> <span class="ow">not</span> <span class="n">math</span><span class="o">.</span><span class="n">inf</span><span class="p">:</span>
+</span><span id="L-278"><a href="#L-278"><span class="linenos">278</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Limit: </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">limit</span><span class="si">}</span><span class="s2">&quot;</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="bp">self</span><span class="o">.</span><span class="n">dependencies</span><span class="p">:</span>
+</span><span id="L-281"><a href="#L-281"><span class="linenos">281</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Dependencies:&quot;</span><span class="p">)</span>
+</span><span id="L-282"><a href="#L-282"><span class="linenos">282</span></a>            <span class="k">for</span> <span class="n">dependency</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">dependencies</span><span class="p">:</span>
+</span><span id="L-283"><a href="#L-283"><span class="linenos">283</span></a>                <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s2">&quot;  &quot;</span> <span class="o">+</span> <span class="n">dependency</span><span class="o">.</span><span class="n">to_s</span><span class="p">(</span><span class="n">level</span> <span class="o">+</span> <span class="mi">1</span><span class="p">))</span>
+</span><span id="L-284"><a href="#L-284"><span class="linenos">284</span></a>
+</span><span id="L-285"><a href="#L-285"><span class="linenos">285</span></a>        <span class="k">return</span> <span class="s2">&quot;</span><span class="se">\n</span><span class="s2">&quot;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">lines</span><span class="p">)</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="nd">@property</span>
+</span><span id="L-288"><a href="#L-288"><span class="linenos">288</span></a>    <span class="k">def</span> <span class="nf">type_name</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
+</span><span id="L-289"><a href="#L-289"><span class="linenos">289</span></a>        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="vm">__class__</span><span class="o">.</span><span class="vm">__name__</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="nd">@property</span>
+</span><span id="L-292"><a href="#L-292"><span class="linenos">292</span></a>    <span class="k">def</span> <span class="nf">id</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
+</span><span id="L-293"><a href="#L-293"><span class="linenos">293</span></a>        <span class="n">name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">name</span>
+</span><span id="L-294"><a href="#L-294"><span class="linenos">294</span></a>        <span class="n">name</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">&quot; </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">&quot;</span> <span class="k">if</span> <span class="n">name</span> <span class="k">else</span> <span class="s2">&quot;&quot;</span>
+</span><span id="L-295"><a href="#L-295"><span class="linenos">295</span></a>        <span class="k">return</span> <span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">type_name</span><span class="si">}</span><span class="s2">:</span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2"> (</span><span class="si">{</span><span class="nb">id</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span><span class="si">}</span><span class="s2">)&quot;</span>
+</span><span id="L-296"><a href="#L-296"><span class="linenos">296</span></a>
+</span><span id="L-297"><a href="#L-297"><span class="linenos">297</span></a>    <span class="k">def</span> <span class="nf">_to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">_indent</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</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="p">[]</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">class</span> <span class="nc">Scan</span><span class="p">(</span><span class="n">Step</span><span class="p">):</span>
-</span><span id="L-301"><a href="#L-301"><span class="linenos">301</span></a>    <span class="nd">@classmethod</span>
-</span><span id="L-302"><a href="#L-302"><span class="linenos">302</span></a>    <span class="k">def</span> <span class="nf">from_expression</span><span class="p">(</span>
-</span><span id="L-303"><a href="#L-303"><span class="linenos">303</span></a>        <span class="bp">cls</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">ctes</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="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Step</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span>
-</span><span id="L-304"><a href="#L-304"><span class="linenos">304</span></a>    <span class="p">)</span> <span class="o">-&gt;</span> <span class="n">Step</span><span class="p">:</span>
-</span><span id="L-305"><a href="#L-305"><span class="linenos">305</span></a>        <span class="n">table</span> <span class="o">=</span> <span class="n">expression</span>
-</span><span id="L-306"><a href="#L-306"><span class="linenos">306</span></a>        <span class="n">alias_</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-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">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-309"><a href="#L-309"><span class="linenos">309</span></a>            <span class="n">table</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="n">step</span> <span class="o">=</span> <span class="n">Step</span><span class="o">.</span><span class="n">from_expression</span><span class="p">(</span><span class="n">table</span><span class="p">,</span> <span class="n">ctes</span><span class="p">)</span>
-</span><span id="L-311"><a href="#L-311"><span class="linenos">311</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">alias_</span>
-</span><span id="L-312"><a href="#L-312"><span class="linenos">312</span></a>            <span class="k">return</span> <span class="n">step</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">step</span> <span class="o">=</span> <span class="n">Scan</span><span class="p">()</span>
-</span><span id="L-315"><a href="#L-315"><span class="linenos">315</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">alias_</span>
-</span><span id="L-316"><a href="#L-316"><span class="linenos">316</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">source</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 class="k">if</span> <span class="n">ctes</span> <span class="ow">and</span> <span class="n">table</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">ctes</span><span class="p">:</span>
-</span><span id="L-318"><a href="#L-318"><span class="linenos">318</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">ctes</span><span class="p">[</span><span class="n">table</span><span class="o">.</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><span id="L-320"><a href="#L-320"><span class="linenos">320</span></a>        <span class="k">return</span> <span class="n">step</span>
-</span><span id="L-321"><a href="#L-321"><span class="linenos">321</span></a>
-</span><span id="L-322"><a href="#L-322"><span class="linenos">322</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="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
-</span><span id="L-323"><a href="#L-323"><span class="linenos">323</span></a>        <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>
-</span><span id="L-324"><a href="#L-324"><span class="linenos">324</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">source</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="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</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="k">def</span> <span class="nf">_to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">indent</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
-</span><span id="L-327"><a href="#L-327"><span class="linenos">327</span></a>        <span class="k">return</span> <span class="p">[</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Source: </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">source</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="bp">self</span><span class="o">.</span><span class="n">source</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="s1">&#39;-static-&#39;</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">]</span>  <span class="c1"># type: ignore</span>
-</span><span id="L-328"><a href="#L-328"><span class="linenos">328</span></a>
+</span><span id="L-300"><a href="#L-300"><span class="linenos">300</span></a>
+</span><span id="L-301"><a href="#L-301"><span class="linenos">301</span></a><span class="k">class</span> <span class="nc">Scan</span><span class="p">(</span><span class="n">Step</span><span class="p">):</span>
+</span><span id="L-302"><a href="#L-302"><span class="linenos">302</span></a>    <span class="nd">@classmethod</span>
+</span><span id="L-303"><a href="#L-303"><span class="linenos">303</span></a>    <span class="k">def</span> <span class="nf">from_expression</span><span class="p">(</span>
+</span><span id="L-304"><a href="#L-304"><span class="linenos">304</span></a>        <span class="bp">cls</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">ctes</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="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Step</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span>
+</span><span id="L-305"><a href="#L-305"><span class="linenos">305</span></a>    <span class="p">)</span> <span class="o">-&gt;</span> <span class="n">Step</span><span class="p">:</span>
+</span><span id="L-306"><a href="#L-306"><span class="linenos">306</span></a>        <span class="n">table</span> <span class="o">=</span> <span class="n">expression</span>
+</span><span id="L-307"><a href="#L-307"><span class="linenos">307</span></a>        <span class="n">alias_</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-308"><a href="#L-308"><span class="linenos">308</span></a>
+</span><span id="L-309"><a href="#L-309"><span class="linenos">309</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-310"><a href="#L-310"><span class="linenos">310</span></a>            <span class="n">table</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="n">step</span> <span class="o">=</span> <span class="n">Step</span><span class="o">.</span><span class="n">from_expression</span><span class="p">(</span><span class="n">table</span><span class="p">,</span> <span class="n">ctes</span><span class="p">)</span>
+</span><span id="L-312"><a href="#L-312"><span class="linenos">312</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">alias_</span>
+</span><span id="L-313"><a href="#L-313"><span class="linenos">313</span></a>            <span class="k">return</span> <span class="n">step</span>
+</span><span id="L-314"><a href="#L-314"><span class="linenos">314</span></a>
+</span><span id="L-315"><a href="#L-315"><span class="linenos">315</span></a>        <span class="n">step</span> <span class="o">=</span> <span class="n">Scan</span><span class="p">()</span>
+</span><span id="L-316"><a href="#L-316"><span class="linenos">316</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">alias_</span>
+</span><span id="L-317"><a href="#L-317"><span class="linenos">317</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">source</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 class="k">if</span> <span class="n">ctes</span> <span class="ow">and</span> <span class="n">table</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">ctes</span><span class="p">:</span>
+</span><span id="L-319"><a href="#L-319"><span class="linenos">319</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">ctes</span><span class="p">[</span><span class="n">table</span><span class="o">.</span><span class="n">name</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="k">return</span> <span class="n">step</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">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
+</span><span id="L-324"><a href="#L-324"><span class="linenos">324</span></a>        <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>
+</span><span id="L-325"><a href="#L-325"><span class="linenos">325</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">source</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="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</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">def</span> <span class="nf">_to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">indent</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</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="p">[</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Source: </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">source</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="bp">self</span><span class="o">.</span><span class="n">source</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="s1">&#39;-static-&#39;</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">]</span>  <span class="c1"># type: ignore</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">class</span> <span class="nc">Join</span><span class="p">(</span><span class="n">Step</span><span class="p">):</span>
-</span><span id="L-331"><a href="#L-331"><span class="linenos">331</span></a>    <span class="nd">@classmethod</span>
-</span><span id="L-332"><a href="#L-332"><span class="linenos">332</span></a>    <span class="k">def</span> <span class="nf">from_joins</span><span class="p">(</span>
-</span><span id="L-333"><a href="#L-333"><span class="linenos">333</span></a>        <span class="bp">cls</span><span class="p">,</span> <span class="n">joins</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Iterable</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">ctes</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="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Step</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span>
-</span><span id="L-334"><a href="#L-334"><span class="linenos">334</span></a>    <span class="p">)</span> <span class="o">-&gt;</span> <span class="n">Step</span><span class="p">:</span>
-</span><span id="L-335"><a href="#L-335"><span class="linenos">335</span></a>        <span class="n">step</span> <span class="o">=</span> <span class="n">Join</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="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-338"><a href="#L-338"><span class="linenos">338</span></a>            <span class="n">source_key</span><span class="p">,</span> <span class="n">join_key</span><span class="p">,</span> <span class="n">condition</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-339"><a href="#L-339"><span class="linenos">339</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">joins</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="o">=</span> <span class="p">{</span>
-</span><span id="L-340"><a href="#L-340"><span class="linenos">340</span></a>                <span class="s2">&quot;side&quot;</span><span class="p">:</span> <span class="n">join</span><span class="o">.</span><span class="n">side</span><span class="p">,</span>  <span class="c1"># type: ignore</span>
-</span><span id="L-341"><a href="#L-341"><span class="linenos">341</span></a>                <span class="s2">&quot;join_key&quot;</span><span class="p">:</span> <span class="n">join_key</span><span class="p">,</span>
-</span><span id="L-342"><a href="#L-342"><span class="linenos">342</span></a>                <span class="s2">&quot;source_key&quot;</span><span class="p">:</span> <span class="n">source_key</span><span class="p">,</span>
-</span><span id="L-343"><a href="#L-343"><span class="linenos">343</span></a>                <span class="s2">&quot;condition&quot;</span><span class="p">:</span> <span class="n">condition</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><span id="L-346"><a href="#L-346"><span class="linenos">346</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">Scan</span><span class="o">.</span><span class="n">from_expression</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">ctes</span><span class="p">))</span>
-</span><span id="L-347"><a href="#L-347"><span class="linenos">347</span></a>
-</span><span id="L-348"><a href="#L-348"><span class="linenos">348</span></a>        <span class="k">return</span> <span class="n">step</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="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
-</span><span id="L-351"><a href="#L-351"><span class="linenos">351</span></a>        <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>
-</span><span id="L-352"><a href="#L-352"><span class="linenos">352</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">joins</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">str</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">str</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</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 class="o">=</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="k">def</span> <span class="nf">_to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">indent</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
-</span><span id="L-355"><a href="#L-355"><span class="linenos">355</span></a>        <span class="n">lines</span> <span class="o">=</span> <span class="p">[]</span>
-</span><span id="L-356"><a href="#L-356"><span class="linenos">356</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="bp">self</span><span class="o">.</span><span class="n">joins</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
-</span><span id="L-357"><a href="#L-357"><span class="linenos">357</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}{</span><span class="n">name</span><span class="si">}</span><span class="s2">: </span><span class="si">{</span><span class="n">join</span><span class="p">[</span><span class="s1">&#39;side&#39;</span><span class="p">]</span><span class="w"> </span><span class="ow">or</span><span class="w"> </span><span class="s1">&#39;INNER&#39;</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
-</span><span id="L-358"><a href="#L-358"><span class="linenos">358</span></a>            <span class="n">join_key</span> <span class="o">=</span> <span class="s2">&quot;, &quot;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="nb">str</span><span class="p">(</span><span class="n">key</span><span class="p">)</span> <span class="k">for</span> <span class="n">key</span> <span class="ow">in</span> <span class="n">t</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span><span class="nb">list</span><span class="p">,</span> <span class="n">join</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;join_key&quot;</span><span class="p">)</span> <span class="ow">or</span> <span class="p">[]))</span>
-</span><span id="L-359"><a href="#L-359"><span class="linenos">359</span></a>            <span class="k">if</span> <span class="n">join_key</span><span class="p">:</span>
-</span><span id="L-360"><a href="#L-360"><span class="linenos">360</span></a>                <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Key: </span><span class="si">{</span><span class="n">join_key</span><span class="si">}</span><span class="s2">&quot;</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="n">join</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;condition&quot;</span><span class="p">):</span>
-</span><span id="L-362"><a href="#L-362"><span class="linenos">362</span></a>                <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">On: </span><span class="si">{</span><span class="n">join</span><span class="p">[</span><span class="s1">&#39;condition&#39;</span><span class="p">]</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>  <span class="c1"># type: ignore</span>
-</span><span id="L-363"><a href="#L-363"><span class="linenos">363</span></a>        <span class="k">return</span> <span class="n">lines</span>
-</span><span id="L-364"><a href="#L-364"><span class="linenos">364</span></a>
-</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">class</span> <span class="nc">Aggregate</span><span class="p">(</span><span class="n">Step</span><span class="p">):</span>
-</span><span id="L-367"><a href="#L-367"><span class="linenos">367</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="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
-</span><span id="L-368"><a href="#L-368"><span class="linenos">368</span></a>        <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>
-</span><span id="L-369"><a href="#L-369"><span class="linenos">369</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">aggregations</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">List</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="p">[]</span>
-</span><span id="L-370"><a href="#L-370"><span class="linenos">370</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">operands</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Tuple</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="p">]</span> <span class="o">=</span> <span class="p">()</span>
-</span><span id="L-371"><a href="#L-371"><span class="linenos">371</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">group</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">str</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="p">{}</span>
-</span><span id="L-372"><a href="#L-372"><span class="linenos">372</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">source</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><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">def</span> <span class="nf">_to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">indent</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
-</span><span id="L-375"><a href="#L-375"><span class="linenos">375</span></a>        <span class="n">lines</span> <span class="o">=</span> <span class="p">[</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Aggregations:&quot;</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="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">aggregations</span><span class="p">:</span>
-</span><span id="L-378"><a href="#L-378"><span class="linenos">378</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="n">expression</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</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">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">group</span><span class="p">:</span>
-</span><span id="L-381"><a href="#L-381"><span class="linenos">381</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Group:&quot;</span><span class="p">)</span>
-</span><span id="L-382"><a href="#L-382"><span class="linenos">382</span></a>            <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">group</span><span class="o">.</span><span class="n">values</span><span class="p">():</span>
-</span><span id="L-383"><a href="#L-383"><span class="linenos">383</span></a>                <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="n">expression</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
-</span><span id="L-384"><a href="#L-384"><span class="linenos">384</span></a>        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">condition</span><span class="p">:</span>
-</span><span id="L-385"><a href="#L-385"><span class="linenos">385</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Having:&quot;</span><span class="p">)</span>
-</span><span id="L-386"><a href="#L-386"><span class="linenos">386</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">condition</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
-</span><span id="L-387"><a href="#L-387"><span class="linenos">387</span></a>        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">operands</span><span class="p">:</span>
-</span><span id="L-388"><a href="#L-388"><span class="linenos">388</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Operands:&quot;</span><span class="p">)</span>
-</span><span id="L-389"><a href="#L-389"><span class="linenos">389</span></a>            <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">operands</span><span class="p">:</span>
-</span><span id="L-390"><a href="#L-390"><span class="linenos">390</span></a>                <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="n">expression</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</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">return</span> <span class="n">lines</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">class</span> <span class="nc">Join</span><span class="p">(</span><span class="n">Step</span><span class="p">):</span>
+</span><span id="L-332"><a href="#L-332"><span class="linenos">332</span></a>    <span class="nd">@classmethod</span>
+</span><span id="L-333"><a href="#L-333"><span class="linenos">333</span></a>    <span class="k">def</span> <span class="nf">from_joins</span><span class="p">(</span>
+</span><span id="L-334"><a href="#L-334"><span class="linenos">334</span></a>        <span class="bp">cls</span><span class="p">,</span> <span class="n">joins</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Iterable</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">ctes</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="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Step</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span>
+</span><span id="L-335"><a href="#L-335"><span class="linenos">335</span></a>    <span class="p">)</span> <span class="o">-&gt;</span> <span class="n">Join</span><span class="p">:</span>
+</span><span id="L-336"><a href="#L-336"><span class="linenos">336</span></a>        <span class="n">step</span> <span class="o">=</span> <span class="n">Join</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">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-339"><a href="#L-339"><span class="linenos">339</span></a>            <span class="n">source_key</span><span class="p">,</span> <span class="n">join_key</span><span class="p">,</span> <span class="n">condition</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-340"><a href="#L-340"><span class="linenos">340</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">joins</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="o">=</span> <span class="p">{</span>
+</span><span id="L-341"><a href="#L-341"><span class="linenos">341</span></a>                <span class="s2">&quot;side&quot;</span><span class="p">:</span> <span class="n">join</span><span class="o">.</span><span class="n">side</span><span class="p">,</span>  <span class="c1"># type: ignore</span>
+</span><span id="L-342"><a href="#L-342"><span class="linenos">342</span></a>                <span class="s2">&quot;join_key&quot;</span><span class="p">:</span> <span class="n">join_key</span><span class="p">,</span>
+</span><span id="L-343"><a href="#L-343"><span class="linenos">343</span></a>                <span class="s2">&quot;source_key&quot;</span><span class="p">:</span> <span class="n">source_key</span><span class="p">,</span>
+</span><span id="L-344"><a href="#L-344"><span class="linenos">344</span></a>                <span class="s2">&quot;condition&quot;</span><span class="p">:</span> <span class="n">condition</span><span class="p">,</span>
+</span><span id="L-345"><a href="#L-345"><span class="linenos">345</span></a>            <span class="p">}</span>
+</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="n">step</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">Scan</span><span class="o">.</span><span class="n">from_expression</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">ctes</span><span class="p">))</span>
+</span><span id="L-348"><a href="#L-348"><span class="linenos">348</span></a>
+</span><span id="L-349"><a href="#L-349"><span class="linenos">349</span></a>        <span class="k">return</span> <span class="n">step</span>
+</span><span id="L-350"><a href="#L-350"><span class="linenos">350</span></a>
+</span><span id="L-351"><a href="#L-351"><span class="linenos">351</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="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
+</span><span id="L-352"><a href="#L-352"><span class="linenos">352</span></a>        <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>
+</span><span id="L-353"><a href="#L-353"><span class="linenos">353</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">source_name</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><span id="L-354"><a href="#L-354"><span class="linenos">354</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">joins</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">str</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">str</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</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 class="o">=</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">def</span> <span class="nf">_to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">indent</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
+</span><span id="L-357"><a href="#L-357"><span class="linenos">357</span></a>        <span class="n">lines</span> <span class="o">=</span> <span class="p">[</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Source: </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">source_name</span><span class="w"> </span><span class="ow">or</span><span class="w"> </span><span class="bp">self</span><span class="o">.</span><span class="n">name</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">]</span>
+</span><span id="L-358"><a href="#L-358"><span class="linenos">358</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="bp">self</span><span class="o">.</span><span class="n">joins</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
+</span><span id="L-359"><a href="#L-359"><span class="linenos">359</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}{</span><span class="n">name</span><span class="si">}</span><span class="s2">: </span><span class="si">{</span><span class="n">join</span><span class="p">[</span><span class="s1">&#39;side&#39;</span><span class="p">]</span><span class="w"> </span><span class="ow">or</span><span class="w"> </span><span class="s1">&#39;INNER&#39;</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
+</span><span id="L-360"><a href="#L-360"><span class="linenos">360</span></a>            <span class="n">join_key</span> <span class="o">=</span> <span class="s2">&quot;, &quot;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="nb">str</span><span class="p">(</span><span class="n">key</span><span class="p">)</span> <span class="k">for</span> <span class="n">key</span> <span class="ow">in</span> <span class="n">t</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span><span class="nb">list</span><span class="p">,</span> <span class="n">join</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;join_key&quot;</span><span class="p">)</span> <span class="ow">or</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="n">join_key</span><span class="p">:</span>
+</span><span id="L-362"><a href="#L-362"><span class="linenos">362</span></a>                <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Key: </span><span class="si">{</span><span class="n">join_key</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
+</span><span id="L-363"><a href="#L-363"><span class="linenos">363</span></a>            <span class="k">if</span> <span class="n">join</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;condition&quot;</span><span class="p">):</span>
+</span><span id="L-364"><a href="#L-364"><span class="linenos">364</span></a>                <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">On: </span><span class="si">{</span><span class="n">join</span><span class="p">[</span><span class="s1">&#39;condition&#39;</span><span class="p">]</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>  <span class="c1"># type: ignore</span>
+</span><span id="L-365"><a href="#L-365"><span class="linenos">365</span></a>        <span class="k">return</span> <span class="n">lines</span>
+</span><span id="L-366"><a href="#L-366"><span class="linenos">366</span></a>
+</span><span id="L-367"><a href="#L-367"><span class="linenos">367</span></a>
+</span><span id="L-368"><a href="#L-368"><span class="linenos">368</span></a><span class="k">class</span> <span class="nc">Aggregate</span><span class="p">(</span><span class="n">Step</span><span class="p">):</span>
+</span><span id="L-369"><a href="#L-369"><span class="linenos">369</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="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
+</span><span id="L-370"><a href="#L-370"><span class="linenos">370</span></a>        <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>
+</span><span id="L-371"><a href="#L-371"><span class="linenos">371</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">aggregations</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">List</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="p">[]</span>
+</span><span id="L-372"><a href="#L-372"><span class="linenos">372</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">operands</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Tuple</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="p">]</span> <span class="o">=</span> <span class="p">()</span>
+</span><span id="L-373"><a href="#L-373"><span class="linenos">373</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">group</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">str</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="p">{}</span>
+</span><span id="L-374"><a href="#L-374"><span class="linenos">374</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">source</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><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">_to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">indent</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
+</span><span id="L-377"><a href="#L-377"><span class="linenos">377</span></a>        <span class="n">lines</span> <span class="o">=</span> <span class="p">[</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Aggregations:&quot;</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="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">aggregations</span><span class="p">:</span>
+</span><span id="L-380"><a href="#L-380"><span class="linenos">380</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="n">expression</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
+</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">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">group</span><span class="p">:</span>
+</span><span id="L-383"><a href="#L-383"><span class="linenos">383</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Group:&quot;</span><span class="p">)</span>
+</span><span id="L-384"><a href="#L-384"><span class="linenos">384</span></a>            <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">group</span><span class="o">.</span><span class="n">values</span><span class="p">():</span>
+</span><span id="L-385"><a href="#L-385"><span class="linenos">385</span></a>                <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="n">expression</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
+</span><span id="L-386"><a href="#L-386"><span class="linenos">386</span></a>        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">condition</span><span class="p">:</span>
+</span><span id="L-387"><a href="#L-387"><span class="linenos">387</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Having:&quot;</span><span class="p">)</span>
+</span><span id="L-388"><a href="#L-388"><span class="linenos">388</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">condition</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</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="bp">self</span><span class="o">.</span><span class="n">operands</span><span class="p">:</span>
+</span><span id="L-390"><a href="#L-390"><span class="linenos">390</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Operands:&quot;</span><span class="p">)</span>
+</span><span id="L-391"><a href="#L-391"><span class="linenos">391</span></a>            <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">operands</span><span class="p">:</span>
+</span><span id="L-392"><a href="#L-392"><span class="linenos">392</span></a>                <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="n">expression</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</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><span id="L-395"><a href="#L-395"><span class="linenos">395</span></a><span class="k">class</span> <span class="nc">Sort</span><span class="p">(</span><span class="n">Step</span><span class="p">):</span>
-</span><span id="L-396"><a href="#L-396"><span class="linenos">396</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="o">-&gt;</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="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>
-</span><span id="L-398"><a href="#L-398"><span class="linenos">398</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">key</span> <span class="o">=</span> <span class="kc">None</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="k">def</span> <span class="nf">_to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">indent</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
-</span><span id="L-401"><a href="#L-401"><span class="linenos">401</span></a>        <span class="n">lines</span> <span class="o">=</span> <span class="p">[</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Key:&quot;</span><span class="p">]</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">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">key</span><span class="p">:</span>  <span class="c1"># type: ignore</span>
-</span><span id="L-404"><a href="#L-404"><span class="linenos">404</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="n">expression</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
-</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">return</span> <span class="n">lines</span>
+</span><span id="L-394"><a href="#L-394"><span class="linenos">394</span></a>        <span class="k">return</span> <span class="n">lines</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><span id="L-397"><a href="#L-397"><span class="linenos">397</span></a><span class="k">class</span> <span class="nc">Sort</span><span class="p">(</span><span class="n">Step</span><span class="p">):</span>
+</span><span id="L-398"><a href="#L-398"><span class="linenos">398</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="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
+</span><span id="L-399"><a href="#L-399"><span class="linenos">399</span></a>        <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>
+</span><span id="L-400"><a href="#L-400"><span class="linenos">400</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">key</span> <span class="o">=</span> <span class="kc">None</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">_to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">indent</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
+</span><span id="L-403"><a href="#L-403"><span class="linenos">403</span></a>        <span class="n">lines</span> <span class="o">=</span> <span class="p">[</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Key:&quot;</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 class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">key</span><span class="p">:</span>  <span class="c1"># type: ignore</span>
+</span><span id="L-406"><a href="#L-406"><span class="linenos">406</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="n">expression</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><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 class="k">class</span> <span class="nc">SetOperation</span><span class="p">(</span><span class="n">Step</span><span class="p">):</span>
-</span><span id="L-410"><a href="#L-410"><span class="linenos">410</span></a>    <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span>
-</span><span id="L-411"><a href="#L-411"><span class="linenos">411</span></a>        <span class="bp">self</span><span class="p">,</span>
-</span><span id="L-412"><a href="#L-412"><span class="linenos">412</span></a>        <span class="n">op</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Type</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-413"><a href="#L-413"><span class="linenos">413</span></a>        <span class="n">left</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="kc">None</span><span class="p">,</span>
-</span><span id="L-414"><a href="#L-414"><span class="linenos">414</span></a>        <span class="n">right</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</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="n">distinct</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span><span class="p">,</span>
-</span><span id="L-416"><a href="#L-416"><span class="linenos">416</span></a>    <span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
-</span><span id="L-417"><a href="#L-417"><span class="linenos">417</span></a>        <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>
-</span><span id="L-418"><a href="#L-418"><span class="linenos">418</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">op</span> <span class="o">=</span> <span class="n">op</span>
-</span><span id="L-419"><a href="#L-419"><span class="linenos">419</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">left</span> <span class="o">=</span> <span class="n">left</span>
-</span><span id="L-420"><a href="#L-420"><span class="linenos">420</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">right</span> <span class="o">=</span> <span class="n">right</span>
-</span><span id="L-421"><a href="#L-421"><span class="linenos">421</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">distinct</span> <span class="o">=</span> <span class="n">distinct</span>
-</span><span id="L-422"><a href="#L-422"><span class="linenos">422</span></a>
-</span><span id="L-423"><a href="#L-423"><span class="linenos">423</span></a>    <span class="nd">@classmethod</span>
-</span><span id="L-424"><a href="#L-424"><span class="linenos">424</span></a>    <span class="k">def</span> <span class="nf">from_expression</span><span class="p">(</span>
-</span><span id="L-425"><a href="#L-425"><span class="linenos">425</span></a>        <span class="bp">cls</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">ctes</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="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Step</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span>
-</span><span id="L-426"><a href="#L-426"><span class="linenos">426</span></a>    <span class="p">)</span> <span class="o">-&gt;</span> <span class="n">Step</span><span class="p">:</span>
-</span><span id="L-427"><a href="#L-427"><span class="linenos">427</span></a>        <span class="k">assert</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-428"><a href="#L-428"><span class="linenos">428</span></a>
-</span><span id="L-429"><a href="#L-429"><span class="linenos">429</span></a>        <span class="n">left</span> <span class="o">=</span> <span class="n">Step</span><span class="o">.</span><span class="n">from_expression</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">left</span><span class="p">,</span> <span class="n">ctes</span><span class="p">)</span>
-</span><span id="L-430"><a href="#L-430"><span class="linenos">430</span></a>        <span class="c1"># SELECT 1 UNION SELECT 2  &lt;-- these subqueries don&#39;t have names</span>
-</span><span id="L-431"><a href="#L-431"><span class="linenos">431</span></a>        <span class="n">left</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">left</span><span class="o">.</span><span class="n">name</span> <span class="ow">or</span> <span class="s2">&quot;left&quot;</span>
-</span><span id="L-432"><a href="#L-432"><span class="linenos">432</span></a>        <span class="n">right</span> <span class="o">=</span> <span class="n">Step</span><span class="o">.</span><span class="n">from_expression</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">right</span><span class="p">,</span> <span class="n">ctes</span><span class="p">)</span>
-</span><span id="L-433"><a href="#L-433"><span class="linenos">433</span></a>        <span class="n">right</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">right</span><span class="o">.</span><span class="n">name</span> <span class="ow">or</span> <span class="s2">&quot;right&quot;</span>
-</span><span id="L-434"><a href="#L-434"><span class="linenos">434</span></a>        <span class="n">step</span> <span class="o">=</span> <span class="bp">cls</span><span class="p">(</span>
-</span><span id="L-435"><a href="#L-435"><span class="linenos">435</span></a>            <span class="n">op</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="vm">__class__</span><span class="p">,</span>
-</span><span id="L-436"><a href="#L-436"><span class="linenos">436</span></a>            <span class="n">left</span><span class="o">=</span><span class="n">left</span><span class="o">.</span><span class="n">name</span><span class="p">,</span>
-</span><span id="L-437"><a href="#L-437"><span class="linenos">437</span></a>            <span class="n">right</span><span class="o">=</span><span class="n">right</span><span class="o">.</span><span class="n">name</span><span class="p">,</span>
-</span><span id="L-438"><a href="#L-438"><span class="linenos">438</span></a>            <span class="n">distinct</span><span class="o">=</span><span class="nb">bool</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">&quot;distinct&quot;</span><span class="p">)),</span>
-</span><span id="L-439"><a href="#L-439"><span class="linenos">439</span></a>        <span class="p">)</span>
-</span><span id="L-440"><a href="#L-440"><span class="linenos">440</span></a>
-</span><span id="L-441"><a href="#L-441"><span class="linenos">441</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">left</span><span class="p">)</span>
-</span><span id="L-442"><a href="#L-442"><span class="linenos">442</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">right</span><span class="p">)</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">limit</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">&quot;limit&quot;</span><span class="p">)</span>
+</span><span id="L-408"><a href="#L-408"><span class="linenos">408</span></a>        <span class="k">return</span> <span class="n">lines</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><span id="L-411"><a href="#L-411"><span class="linenos">411</span></a><span class="k">class</span> <span class="nc">SetOperation</span><span class="p">(</span><span class="n">Step</span><span class="p">):</span>
+</span><span id="L-412"><a href="#L-412"><span class="linenos">412</span></a>    <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span>
+</span><span id="L-413"><a href="#L-413"><span class="linenos">413</span></a>        <span class="bp">self</span><span class="p">,</span>
+</span><span id="L-414"><a href="#L-414"><span class="linenos">414</span></a>        <span class="n">op</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Type</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-415"><a href="#L-415"><span class="linenos">415</span></a>        <span class="n">left</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="kc">None</span><span class="p">,</span>
+</span><span id="L-416"><a href="#L-416"><span class="linenos">416</span></a>        <span class="n">right</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="kc">None</span><span class="p">,</span>
+</span><span id="L-417"><a href="#L-417"><span class="linenos">417</span></a>        <span class="n">distinct</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span><span class="p">,</span>
+</span><span id="L-418"><a href="#L-418"><span class="linenos">418</span></a>    <span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
+</span><span id="L-419"><a href="#L-419"><span class="linenos">419</span></a>        <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>
+</span><span id="L-420"><a href="#L-420"><span class="linenos">420</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">op</span> <span class="o">=</span> <span class="n">op</span>
+</span><span id="L-421"><a href="#L-421"><span class="linenos">421</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">left</span> <span class="o">=</span> <span class="n">left</span>
+</span><span id="L-422"><a href="#L-422"><span class="linenos">422</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">right</span> <span class="o">=</span> <span class="n">right</span>
+</span><span id="L-423"><a href="#L-423"><span class="linenos">423</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">distinct</span> <span class="o">=</span> <span class="n">distinct</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="nd">@classmethod</span>
+</span><span id="L-426"><a href="#L-426"><span class="linenos">426</span></a>    <span class="k">def</span> <span class="nf">from_expression</span><span class="p">(</span>
+</span><span id="L-427"><a href="#L-427"><span class="linenos">427</span></a>        <span class="bp">cls</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">ctes</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="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Step</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span>
+</span><span id="L-428"><a href="#L-428"><span class="linenos">428</span></a>    <span class="p">)</span> <span class="o">-&gt;</span> <span class="n">SetOperation</span><span class="p">:</span>
+</span><span id="L-429"><a href="#L-429"><span class="linenos">429</span></a>        <span class="k">assert</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-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="n">left</span> <span class="o">=</span> <span class="n">Step</span><span class="o">.</span><span class="n">from_expression</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">left</span><span class="p">,</span> <span class="n">ctes</span><span class="p">)</span>
+</span><span id="L-432"><a href="#L-432"><span class="linenos">432</span></a>        <span class="c1"># SELECT 1 UNION SELECT 2  &lt;-- these subqueries don&#39;t have names</span>
+</span><span id="L-433"><a href="#L-433"><span class="linenos">433</span></a>        <span class="n">left</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">left</span><span class="o">.</span><span class="n">name</span> <span class="ow">or</span> <span class="s2">&quot;left&quot;</span>
+</span><span id="L-434"><a href="#L-434"><span class="linenos">434</span></a>        <span class="n">right</span> <span class="o">=</span> <span class="n">Step</span><span class="o">.</span><span class="n">from_expression</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">right</span><span class="p">,</span> <span class="n">ctes</span><span class="p">)</span>
+</span><span id="L-435"><a href="#L-435"><span class="linenos">435</span></a>        <span class="n">right</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">right</span><span class="o">.</span><span class="n">name</span> <span class="ow">or</span> <span class="s2">&quot;right&quot;</span>
+</span><span id="L-436"><a href="#L-436"><span class="linenos">436</span></a>        <span class="n">step</span> <span class="o">=</span> <span class="bp">cls</span><span class="p">(</span>
+</span><span id="L-437"><a href="#L-437"><span class="linenos">437</span></a>            <span class="n">op</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="vm">__class__</span><span class="p">,</span>
+</span><span id="L-438"><a href="#L-438"><span class="linenos">438</span></a>            <span class="n">left</span><span class="o">=</span><span class="n">left</span><span class="o">.</span><span class="n">name</span><span class="p">,</span>
+</span><span id="L-439"><a href="#L-439"><span class="linenos">439</span></a>            <span class="n">right</span><span class="o">=</span><span class="n">right</span><span class="o">.</span><span class="n">name</span><span class="p">,</span>
+</span><span id="L-440"><a href="#L-440"><span class="linenos">440</span></a>            <span class="n">distinct</span><span class="o">=</span><span class="nb">bool</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">&quot;distinct&quot;</span><span class="p">)),</span>
+</span><span id="L-441"><a href="#L-441"><span class="linenos">441</span></a>        <span class="p">)</span>
+</span><span id="L-442"><a href="#L-442"><span class="linenos">442</span></a>
+</span><span id="L-443"><a href="#L-443"><span class="linenos">443</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">left</span><span class="p">)</span>
+</span><span id="L-444"><a href="#L-444"><span class="linenos">444</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">right</span><span class="p">)</span>
 </span><span id="L-445"><a href="#L-445"><span class="linenos">445</span></a>
-</span><span id="L-446"><a href="#L-446"><span class="linenos">446</span></a>        <span class="k">if</span> <span class="n">limit</span><span class="p">:</span>
-</span><span id="L-447"><a href="#L-447"><span class="linenos">447</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">limit</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">limit</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="s2">&quot;expression&quot;</span><span class="p">))</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="k">return</span> <span class="n">step</span>
+</span><span id="L-446"><a href="#L-446"><span class="linenos">446</span></a>        <span class="n">limit</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">&quot;limit&quot;</span><span class="p">)</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 class="k">if</span> <span class="n">limit</span><span class="p">:</span>
+</span><span id="L-449"><a href="#L-449"><span class="linenos">449</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">limit</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">limit</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="s2">&quot;expression&quot;</span><span class="p">))</span>
 </span><span id="L-450"><a href="#L-450"><span class="linenos">450</span></a>
-</span><span id="L-451"><a href="#L-451"><span class="linenos">451</span></a>    <span class="k">def</span> <span class="nf">_to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">indent</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
-</span><span id="L-452"><a href="#L-452"><span class="linenos">452</span></a>        <span class="n">lines</span> <span class="o">=</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="bp">self</span><span class="o">.</span><span class="n">distinct</span><span class="p">:</span>
-</span><span id="L-454"><a href="#L-454"><span class="linenos">454</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Distinct: </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">distinct</span><span class="si">}</span><span class="s2">&quot;</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="n">lines</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="nd">@property</span>
-</span><span id="L-458"><a href="#L-458"><span class="linenos">458</span></a>    <span class="k">def</span> <span class="nf">type_name</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</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="bp">self</span><span class="o">.</span><span class="n">op</span><span class="o">.</span><span class="vm">__name__</span>
+</span><span id="L-451"><a href="#L-451"><span class="linenos">451</span></a>        <span class="k">return</span> <span class="n">step</span>
+</span><span id="L-452"><a href="#L-452"><span class="linenos">452</span></a>
+</span><span id="L-453"><a href="#L-453"><span class="linenos">453</span></a>    <span class="k">def</span> <span class="nf">_to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">indent</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
+</span><span id="L-454"><a href="#L-454"><span class="linenos">454</span></a>        <span class="n">lines</span> <span class="o">=</span> <span class="p">[]</span>
+</span><span id="L-455"><a href="#L-455"><span class="linenos">455</span></a>        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">distinct</span><span class="p">:</span>
+</span><span id="L-456"><a href="#L-456"><span class="linenos">456</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Distinct: </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">distinct</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
+</span><span id="L-457"><a href="#L-457"><span class="linenos">457</span></a>        <span class="k">return</span> <span class="n">lines</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="nd">@property</span>
+</span><span id="L-460"><a href="#L-460"><span class="linenos">460</span></a>    <span class="k">def</span> <span class="nf">type_name</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</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="bp">self</span><span class="o">.</span><span class="n">op</span><span class="o">.</span><span class="vm">__name__</span>
 </span></pre></div>
 
 
@@ -882,183 +887,184 @@
 </span><span id="Step-119"><a href="#Step-119"><span class="linenos">119</span></a>        <span class="k">if</span> <span class="n">joins</span><span class="p">:</span>
 </span><span id="Step-120"><a href="#Step-120"><span class="linenos">120</span></a>            <span class="n">join</span> <span class="o">=</span> <span class="n">Join</span><span class="o">.</span><span class="n">from_joins</span><span class="p">(</span><span class="n">joins</span><span class="p">,</span> <span class="n">ctes</span><span class="p">)</span>
 </span><span id="Step-121"><a href="#Step-121"><span class="linenos">121</span></a>            <span class="n">join</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
-</span><span id="Step-122"><a href="#Step-122"><span class="linenos">122</span></a>            <span class="n">join</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">step</span><span class="p">)</span>
-</span><span id="Step-123"><a href="#Step-123"><span class="linenos">123</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">join</span>
-</span><span id="Step-124"><a href="#Step-124"><span class="linenos">124</span></a>
-</span><span id="Step-125"><a href="#Step-125"><span class="linenos">125</span></a>        <span class="n">projections</span> <span class="o">=</span> <span class="p">[]</span>  <span class="c1"># final selects in this chain of steps representing a select</span>
-</span><span id="Step-126"><a href="#Step-126"><span class="linenos">126</span></a>        <span class="n">operands</span> <span class="o">=</span> <span class="p">{}</span>  <span class="c1"># intermediate computations of agg funcs eg x + 1 in SUM(x + 1)</span>
-</span><span id="Step-127"><a href="#Step-127"><span class="linenos">127</span></a>        <span class="n">aggregations</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span>
-</span><span id="Step-128"><a href="#Step-128"><span class="linenos">128</span></a>        <span class="n">next_operand_name</span> <span class="o">=</span> <span class="n">name_sequence</span><span class="p">(</span><span class="s2">&quot;_a_&quot;</span><span class="p">)</span>
-</span><span id="Step-129"><a href="#Step-129"><span class="linenos">129</span></a>
-</span><span id="Step-130"><a href="#Step-130"><span class="linenos">130</span></a>        <span class="k">def</span> <span class="nf">extract_agg_operands</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
-</span><span id="Step-131"><a href="#Step-131"><span class="linenos">131</span></a>            <span class="n">agg_funcs</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">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="Step-132"><a href="#Step-132"><span class="linenos">132</span></a>            <span class="k">if</span> <span class="n">agg_funcs</span><span class="p">:</span>
-</span><span id="Step-133"><a href="#Step-133"><span class="linenos">133</span></a>                <span class="n">aggregations</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span>
-</span><span id="Step-134"><a href="#Step-134"><span class="linenos">134</span></a>
-</span><span id="Step-135"><a href="#Step-135"><span class="linenos">135</span></a>            <span class="k">for</span> <span class="n">agg</span> <span class="ow">in</span> <span class="n">agg_funcs</span><span class="p">:</span>
-</span><span id="Step-136"><a href="#Step-136"><span class="linenos">136</span></a>                <span class="k">for</span> <span class="n">operand</span> <span class="ow">in</span> <span class="n">agg</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">():</span>
-</span><span id="Step-137"><a href="#Step-137"><span class="linenos">137</span></a>                    <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">operand</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="Step-138"><a href="#Step-138"><span class="linenos">138</span></a>                        <span class="k">continue</span>
-</span><span id="Step-139"><a href="#Step-139"><span class="linenos">139</span></a>                    <span class="k">if</span> <span class="n">operand</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">operands</span><span class="p">:</span>
-</span><span id="Step-140"><a href="#Step-140"><span class="linenos">140</span></a>                        <span class="n">operands</span><span class="p">[</span><span class="n">operand</span><span class="p">]</span> <span class="o">=</span> <span class="n">next_operand_name</span><span class="p">()</span>
-</span><span id="Step-141"><a href="#Step-141"><span class="linenos">141</span></a>
-</span><span id="Step-142"><a href="#Step-142"><span class="linenos">142</span></a>                    <span class="n">operand</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">column</span><span class="p">(</span><span class="n">operands</span><span class="p">[</span><span class="n">operand</span><span class="p">],</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">))</span>
-</span><span id="Step-143"><a href="#Step-143"><span class="linenos">143</span></a>
-</span><span id="Step-144"><a href="#Step-144"><span class="linenos">144</span></a>            <span class="k">return</span> <span class="nb">bool</span><span class="p">(</span><span class="n">agg_funcs</span><span class="p">)</span>
-</span><span id="Step-145"><a href="#Step-145"><span class="linenos">145</span></a>
-</span><span id="Step-146"><a href="#Step-146"><span class="linenos">146</span></a>        <span class="k">def</span> <span class="nf">set_ops_and_aggs</span><span class="p">(</span><span class="n">step</span><span class="p">):</span>
-</span><span id="Step-147"><a href="#Step-147"><span class="linenos">147</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">operands</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">alias</span><span class="p">(</span><span class="n">operand</span><span class="p">,</span> <span class="n">alias_</span><span class="p">)</span> <span class="k">for</span> <span class="n">operand</span><span class="p">,</span> <span class="n">alias_</span> <span class="ow">in</span> <span class="n">operands</span><span class="o">.</span><span class="n">items</span><span class="p">())</span>
-</span><span id="Step-148"><a href="#Step-148"><span class="linenos">148</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">aggregations</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">aggregations</span><span class="p">)</span>
-</span><span id="Step-149"><a href="#Step-149"><span class="linenos">149</span></a>
-</span><span id="Step-150"><a href="#Step-150"><span class="linenos">150</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="Step-151"><a href="#Step-151"><span class="linenos">151</span></a>            <span class="k">if</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><span id="Step-152"><a href="#Step-152"><span class="linenos">152</span></a>                <span class="n">projections</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">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">step</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">))</span>
-</span><span id="Step-153"><a href="#Step-153"><span class="linenos">153</span></a>                <span class="n">extract_agg_operands</span><span class="p">(</span><span class="n">e</span><span class="p">)</span>
-</span><span id="Step-154"><a href="#Step-154"><span class="linenos">154</span></a>            <span class="k">else</span><span class="p">:</span>
-</span><span id="Step-155"><a href="#Step-155"><span class="linenos">155</span></a>                <span class="n">projections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">e</span><span class="p">)</span>
-</span><span id="Step-156"><a href="#Step-156"><span class="linenos">156</span></a>
-</span><span id="Step-157"><a href="#Step-157"><span class="linenos">157</span></a>        <span class="n">where</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">&quot;where&quot;</span><span class="p">)</span>
-</span><span id="Step-158"><a href="#Step-158"><span class="linenos">158</span></a>
-</span><span id="Step-159"><a href="#Step-159"><span class="linenos">159</span></a>        <span class="k">if</span> <span class="n">where</span><span class="p">:</span>
-</span><span id="Step-160"><a href="#Step-160"><span class="linenos">160</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">condition</span> <span class="o">=</span> <span class="n">where</span><span class="o">.</span><span class="n">this</span>
-</span><span id="Step-161"><a href="#Step-161"><span class="linenos">161</span></a>
-</span><span id="Step-162"><a href="#Step-162"><span class="linenos">162</span></a>        <span class="n">group</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">&quot;group&quot;</span><span class="p">)</span>
-</span><span id="Step-163"><a href="#Step-163"><span class="linenos">163</span></a>
-</span><span id="Step-164"><a href="#Step-164"><span class="linenos">164</span></a>        <span class="k">if</span> <span class="n">group</span> <span class="ow">or</span> <span class="n">aggregations</span><span class="p">:</span>
-</span><span id="Step-165"><a href="#Step-165"><span class="linenos">165</span></a>            <span class="n">aggregate</span> <span class="o">=</span> <span class="n">Aggregate</span><span class="p">()</span>
-</span><span id="Step-166"><a href="#Step-166"><span class="linenos">166</span></a>            <span class="n">aggregate</span><span class="o">.</span><span class="n">source</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
-</span><span id="Step-167"><a href="#Step-167"><span class="linenos">167</span></a>            <span class="n">aggregate</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
-</span><span id="Step-168"><a href="#Step-168"><span class="linenos">168</span></a>
-</span><span id="Step-169"><a href="#Step-169"><span class="linenos">169</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">&quot;having&quot;</span><span class="p">)</span>
-</span><span id="Step-170"><a href="#Step-170"><span class="linenos">170</span></a>
-</span><span id="Step-171"><a href="#Step-171"><span class="linenos">171</span></a>            <span class="k">if</span> <span class="n">having</span><span class="p">:</span>
-</span><span id="Step-172"><a href="#Step-172"><span class="linenos">172</span></a>                <span class="k">if</span> <span class="n">extract_agg_operands</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">having</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="s2">&quot;_h&quot;</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">)):</span>
-</span><span id="Step-173"><a href="#Step-173"><span class="linenos">173</span></a>                    <span class="n">aggregate</span><span class="o">.</span><span class="n">condition</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="s2">&quot;_h&quot;</span><span class="p">,</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
-</span><span id="Step-174"><a href="#Step-174"><span class="linenos">174</span></a>                <span class="k">else</span><span class="p">:</span>
-</span><span id="Step-175"><a href="#Step-175"><span class="linenos">175</span></a>                    <span class="n">aggregate</span><span class="o">.</span><span class="n">condition</span> <span class="o">=</span> <span class="n">having</span><span class="o">.</span><span class="n">this</span>
-</span><span id="Step-176"><a href="#Step-176"><span class="linenos">176</span></a>
-</span><span id="Step-177"><a href="#Step-177"><span class="linenos">177</span></a>            <span class="n">set_ops_and_aggs</span><span class="p">(</span><span class="n">aggregate</span><span class="p">)</span>
-</span><span id="Step-178"><a href="#Step-178"><span class="linenos">178</span></a>
-</span><span id="Step-179"><a href="#Step-179"><span class="linenos">179</span></a>            <span class="c1"># give aggregates names and replace projections with references to them</span>
-</span><span id="Step-180"><a href="#Step-180"><span class="linenos">180</span></a>            <span class="n">aggregate</span><span class="o">.</span><span class="n">group</span> <span class="o">=</span> <span class="p">{</span>
-</span><span id="Step-181"><a href="#Step-181"><span class="linenos">181</span></a>                <span class="sa">f</span><span class="s2">&quot;_g</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">:</span> <span class="n">e</span> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">e</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">group</span><span class="o">.</span><span class="n">expressions</span> <span class="k">if</span> <span class="n">group</span> <span class="k">else</span> <span class="p">[])</span>
-</span><span id="Step-182"><a href="#Step-182"><span class="linenos">182</span></a>            <span class="p">}</span>
-</span><span id="Step-183"><a href="#Step-183"><span class="linenos">183</span></a>
-</span><span id="Step-184"><a href="#Step-184"><span class="linenos">184</span></a>            <span class="n">intermediate</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">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 class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="p">{}</span>
-</span><span id="Step-185"><a href="#Step-185"><span class="linenos">185</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">aggregate</span><span class="o">.</span><span class="n">group</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
-</span><span id="Step-186"><a href="#Step-186"><span class="linenos">186</span></a>                <span class="n">intermediate</span><span class="p">[</span><span class="n">v</span><span class="p">]</span> <span class="o">=</span> <span class="n">k</span>
-</span><span id="Step-187"><a href="#Step-187"><span class="linenos">187</span></a>                <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">v</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="Step-188"><a href="#Step-188"><span class="linenos">188</span></a>                    <span class="n">intermediate</span><span class="p">[</span><span class="n">v</span><span class="o">.</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">k</span>
-</span><span id="Step-189"><a href="#Step-189"><span class="linenos">189</span></a>
-</span><span id="Step-190"><a href="#Step-190"><span class="linenos">190</span></a>            <span class="k">for</span> <span class="n">projection</span> <span class="ow">in</span> <span class="n">projections</span><span class="p">:</span>
-</span><span id="Step-191"><a href="#Step-191"><span class="linenos">191</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="n">projection</span><span class="o">.</span><span class="n">walk</span><span class="p">():</span>
-</span><span id="Step-192"><a href="#Step-192"><span class="linenos">192</span></a>                    <span class="n">name</span> <span class="o">=</span> <span class="n">intermediate</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
-</span><span id="Step-193"><a href="#Step-193"><span class="linenos">193</span></a>                    <span class="k">if</span> <span class="n">name</span><span class="p">:</span>
-</span><span id="Step-194"><a href="#Step-194"><span class="linenos">194</span></a>                        <span class="n">node</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">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">))</span>
-</span><span id="Step-195"><a href="#Step-195"><span class="linenos">195</span></a>
-</span><span id="Step-196"><a href="#Step-196"><span class="linenos">196</span></a>            <span class="k">if</span> <span class="n">aggregate</span><span class="o">.</span><span class="n">condition</span><span class="p">:</span>
-</span><span id="Step-197"><a href="#Step-197"><span class="linenos">197</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="n">aggregate</span><span class="o">.</span><span class="n">condition</span><span class="o">.</span><span class="n">walk</span><span class="p">():</span>
-</span><span id="Step-198"><a href="#Step-198"><span class="linenos">198</span></a>                    <span class="n">name</span> <span class="o">=</span> <span class="n">intermediate</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> <span class="ow">or</span> <span class="n">intermediate</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="Step-199"><a href="#Step-199"><span class="linenos">199</span></a>                    <span class="k">if</span> <span class="n">name</span><span class="p">:</span>
-</span><span id="Step-200"><a href="#Step-200"><span class="linenos">200</span></a>                        <span class="n">node</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">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">))</span>
-</span><span id="Step-201"><a href="#Step-201"><span class="linenos">201</span></a>
-</span><span id="Step-202"><a href="#Step-202"><span class="linenos">202</span></a>            <span class="n">aggregate</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">step</span><span class="p">)</span>
-</span><span id="Step-203"><a href="#Step-203"><span class="linenos">203</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">aggregate</span>
-</span><span id="Step-204"><a href="#Step-204"><span class="linenos">204</span></a>
-</span><span id="Step-205"><a href="#Step-205"><span class="linenos">205</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">&quot;order&quot;</span><span class="p">)</span>
-</span><span id="Step-206"><a href="#Step-206"><span class="linenos">206</span></a>
-</span><span id="Step-207"><a href="#Step-207"><span class="linenos">207</span></a>        <span class="k">if</span> <span class="n">order</span><span class="p">:</span>
-</span><span id="Step-208"><a href="#Step-208"><span class="linenos">208</span></a>            <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">step</span><span class="p">,</span> <span class="n">Aggregate</span><span class="p">):</span>
-</span><span id="Step-209"><a href="#Step-209"><span class="linenos">209</span></a>                <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">ordered</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">order</span><span class="o">.</span><span class="n">expressions</span><span class="p">):</span>
-</span><span id="Step-210"><a href="#Step-210"><span class="linenos">210</span></a>                    <span class="k">if</span> <span class="n">extract_agg_operands</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">ordered</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="sa">f</span><span class="s2">&quot;_o_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">)):</span>
-</span><span id="Step-211"><a href="#Step-211"><span class="linenos">211</span></a>                        <span class="n">ordered</span><span class="o">.</span><span class="n">this</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">column</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;_o_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">,</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">))</span>
-</span><span id="Step-212"><a href="#Step-212"><span class="linenos">212</span></a>
-</span><span id="Step-213"><a href="#Step-213"><span class="linenos">213</span></a>                <span class="n">set_ops_and_aggs</span><span class="p">(</span><span class="n">aggregate</span><span class="p">)</span>
-</span><span id="Step-214"><a href="#Step-214"><span class="linenos">214</span></a>
-</span><span id="Step-215"><a href="#Step-215"><span class="linenos">215</span></a>            <span class="n">sort</span> <span class="o">=</span> <span class="n">Sort</span><span class="p">()</span>
-</span><span id="Step-216"><a href="#Step-216"><span class="linenos">216</span></a>            <span class="n">sort</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
-</span><span id="Step-217"><a href="#Step-217"><span class="linenos">217</span></a>            <span class="n">sort</span><span class="o">.</span><span class="n">key</span> <span class="o">=</span> <span class="n">order</span><span class="o">.</span><span class="n">expressions</span>
-</span><span id="Step-218"><a href="#Step-218"><span class="linenos">218</span></a>            <span class="n">sort</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">step</span><span class="p">)</span>
-</span><span id="Step-219"><a href="#Step-219"><span class="linenos">219</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">sort</span>
-</span><span id="Step-220"><a href="#Step-220"><span class="linenos">220</span></a>
-</span><span id="Step-221"><a href="#Step-221"><span class="linenos">221</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">projections</span> <span class="o">=</span> <span class="n">projections</span>
-</span><span id="Step-222"><a href="#Step-222"><span class="linenos">222</span></a>
-</span><span id="Step-223"><a href="#Step-223"><span class="linenos">223</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">Select</span><span class="p">)</span> <span class="ow">and</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">&quot;distinct&quot;</span><span class="p">):</span>
-</span><span id="Step-224"><a href="#Step-224"><span class="linenos">224</span></a>            <span class="n">distinct</span> <span class="o">=</span> <span class="n">Aggregate</span><span class="p">()</span>
-</span><span id="Step-225"><a href="#Step-225"><span class="linenos">225</span></a>            <span class="n">distinct</span><span class="o">.</span><span class="n">source</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
-</span><span id="Step-226"><a href="#Step-226"><span class="linenos">226</span></a>            <span class="n">distinct</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
-</span><span id="Step-227"><a href="#Step-227"><span class="linenos">227</span></a>            <span class="n">distinct</span><span class="o">.</span><span class="n">group</span> <span class="o">=</span> <span class="p">{</span>
-</span><span id="Step-228"><a href="#Step-228"><span class="linenos">228</span></a>                <span class="n">e</span><span class="o">.</span><span class="n">alias_or_name</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">col</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 class="n">table</span><span class="o">=</span><span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">)</span>
-</span><span id="Step-229"><a href="#Step-229"><span class="linenos">229</span></a>                <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">projections</span> <span class="ow">or</span> <span class="n">expression</span><span class="o">.</span><span class="n">expressions</span>
-</span><span id="Step-230"><a href="#Step-230"><span class="linenos">230</span></a>            <span class="p">}</span>
-</span><span id="Step-231"><a href="#Step-231"><span class="linenos">231</span></a>            <span class="n">distinct</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">step</span><span class="p">)</span>
-</span><span id="Step-232"><a href="#Step-232"><span class="linenos">232</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">distinct</span>
-</span><span id="Step-233"><a href="#Step-233"><span class="linenos">233</span></a>
-</span><span id="Step-234"><a href="#Step-234"><span class="linenos">234</span></a>        <span class="n">limit</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">&quot;limit&quot;</span><span class="p">)</span>
-</span><span id="Step-235"><a href="#Step-235"><span class="linenos">235</span></a>
-</span><span id="Step-236"><a href="#Step-236"><span class="linenos">236</span></a>        <span class="k">if</span> <span class="n">limit</span><span class="p">:</span>
-</span><span id="Step-237"><a href="#Step-237"><span class="linenos">237</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">limit</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">limit</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="s2">&quot;expression&quot;</span><span class="p">))</span>
-</span><span id="Step-238"><a href="#Step-238"><span class="linenos">238</span></a>
-</span><span id="Step-239"><a href="#Step-239"><span class="linenos">239</span></a>        <span class="k">return</span> <span class="n">step</span>
-</span><span id="Step-240"><a href="#Step-240"><span class="linenos">240</span></a>
-</span><span id="Step-241"><a href="#Step-241"><span class="linenos">241</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="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
-</span><span id="Step-242"><a href="#Step-242"><span class="linenos">242</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">name</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><span id="Step-243"><a href="#Step-243"><span class="linenos">243</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">dependencies</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Set</span><span class="p">[</span><span class="n">Step</span><span class="p">]</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span>
-</span><span id="Step-244"><a href="#Step-244"><span class="linenos">244</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">dependents</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Set</span><span class="p">[</span><span class="n">Step</span><span class="p">]</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span>
-</span><span id="Step-245"><a href="#Step-245"><span class="linenos">245</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">projections</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">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">]</span> <span class="o">=</span> <span class="p">[]</span>
-</span><span id="Step-246"><a href="#Step-246"><span class="linenos">246</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">limit</span><span class="p">:</span> <span class="nb">float</span> <span class="o">=</span> <span class="n">math</span><span class="o">.</span><span class="n">inf</span>
-</span><span id="Step-247"><a href="#Step-247"><span class="linenos">247</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">condition</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="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>
-</span><span id="Step-248"><a href="#Step-248"><span class="linenos">248</span></a>
-</span><span id="Step-249"><a href="#Step-249"><span class="linenos">249</span></a>    <span class="k">def</span> <span class="nf">add_dependency</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">dependency</span><span class="p">:</span> <span class="n">Step</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
-</span><span id="Step-250"><a href="#Step-250"><span class="linenos">250</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">dependencies</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">dependency</span><span class="p">)</span>
-</span><span id="Step-251"><a href="#Step-251"><span class="linenos">251</span></a>        <span class="n">dependency</span><span class="o">.</span><span class="n">dependents</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span>
-</span><span id="Step-252"><a href="#Step-252"><span class="linenos">252</span></a>
-</span><span id="Step-253"><a href="#Step-253"><span class="linenos">253</span></a>    <span class="k">def</span> <span class="fm">__repr__</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
-</span><span id="Step-254"><a href="#Step-254"><span class="linenos">254</span></a>        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">to_s</span><span class="p">()</span>
-</span><span id="Step-255"><a href="#Step-255"><span class="linenos">255</span></a>
-</span><span id="Step-256"><a href="#Step-256"><span class="linenos">256</span></a>    <span class="k">def</span> <span class="nf">to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">level</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">0</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
-</span><span id="Step-257"><a href="#Step-257"><span class="linenos">257</span></a>        <span class="n">indent</span> <span class="o">=</span> <span class="s2">&quot;  &quot;</span> <span class="o">*</span> <span class="n">level</span>
-</span><span id="Step-258"><a href="#Step-258"><span class="linenos">258</span></a>        <span class="n">nested</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">    &quot;</span>
-</span><span id="Step-259"><a href="#Step-259"><span class="linenos">259</span></a>
-</span><span id="Step-260"><a href="#Step-260"><span class="linenos">260</span></a>        <span class="n">context</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_to_s</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">  &quot;</span><span class="p">)</span>
-</span><span id="Step-261"><a href="#Step-261"><span class="linenos">261</span></a>
-</span><span id="Step-262"><a href="#Step-262"><span class="linenos">262</span></a>        <span class="k">if</span> <span class="n">context</span><span class="p">:</span>
-</span><span id="Step-263"><a href="#Step-263"><span class="linenos">263</span></a>            <span class="n">context</span> <span class="o">=</span> <span class="p">[</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Context:&quot;</span><span class="p">]</span> <span class="o">+</span> <span class="n">context</span>
-</span><span id="Step-264"><a href="#Step-264"><span class="linenos">264</span></a>
-</span><span id="Step-265"><a href="#Step-265"><span class="linenos">265</span></a>        <span class="n">lines</span> <span class="o">=</span> <span class="p">[</span>
-</span><span id="Step-266"><a href="#Step-266"><span class="linenos">266</span></a>            <span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">- </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">id</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">,</span>
-</span><span id="Step-267"><a href="#Step-267"><span class="linenos">267</span></a>            <span class="o">*</span><span class="n">context</span><span class="p">,</span>
-</span><span id="Step-268"><a href="#Step-268"><span class="linenos">268</span></a>            <span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Projections:&quot;</span><span class="p">,</span>
-</span><span id="Step-269"><a href="#Step-269"><span class="linenos">269</span></a>        <span class="p">]</span>
-</span><span id="Step-270"><a href="#Step-270"><span class="linenos">270</span></a>
-</span><span id="Step-271"><a href="#Step-271"><span class="linenos">271</span></a>        <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">projections</span><span class="p">:</span>
-</span><span id="Step-272"><a href="#Step-272"><span class="linenos">272</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="n">expression</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
-</span><span id="Step-273"><a href="#Step-273"><span class="linenos">273</span></a>
-</span><span id="Step-274"><a href="#Step-274"><span class="linenos">274</span></a>        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">condition</span><span class="p">:</span>
-</span><span id="Step-275"><a href="#Step-275"><span class="linenos">275</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Condition: </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">condition</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
-</span><span id="Step-276"><a href="#Step-276"><span class="linenos">276</span></a>
-</span><span id="Step-277"><a href="#Step-277"><span class="linenos">277</span></a>        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">limit</span> <span class="ow">is</span> <span class="ow">not</span> <span class="n">math</span><span class="o">.</span><span class="n">inf</span><span class="p">:</span>
-</span><span id="Step-278"><a href="#Step-278"><span class="linenos">278</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Limit: </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">limit</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
-</span><span id="Step-279"><a href="#Step-279"><span class="linenos">279</span></a>
-</span><span id="Step-280"><a href="#Step-280"><span class="linenos">280</span></a>        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">dependencies</span><span class="p">:</span>
-</span><span id="Step-281"><a href="#Step-281"><span class="linenos">281</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Dependencies:&quot;</span><span class="p">)</span>
-</span><span id="Step-282"><a href="#Step-282"><span class="linenos">282</span></a>            <span class="k">for</span> <span class="n">dependency</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">dependencies</span><span class="p">:</span>
-</span><span id="Step-283"><a href="#Step-283"><span class="linenos">283</span></a>                <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s2">&quot;  &quot;</span> <span class="o">+</span> <span class="n">dependency</span><span class="o">.</span><span class="n">to_s</span><span class="p">(</span><span class="n">level</span> <span class="o">+</span> <span class="mi">1</span><span class="p">))</span>
-</span><span id="Step-284"><a href="#Step-284"><span class="linenos">284</span></a>
-</span><span id="Step-285"><a href="#Step-285"><span class="linenos">285</span></a>        <span class="k">return</span> <span class="s2">&quot;</span><span class="se">\n</span><span class="s2">&quot;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">lines</span><span class="p">)</span>
-</span><span id="Step-286"><a href="#Step-286"><span class="linenos">286</span></a>
-</span><span id="Step-287"><a href="#Step-287"><span class="linenos">287</span></a>    <span class="nd">@property</span>
-</span><span id="Step-288"><a href="#Step-288"><span class="linenos">288</span></a>    <span class="k">def</span> <span class="nf">type_name</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
-</span><span id="Step-289"><a href="#Step-289"><span class="linenos">289</span></a>        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="vm">__class__</span><span class="o">.</span><span class="vm">__name__</span>
-</span><span id="Step-290"><a href="#Step-290"><span class="linenos">290</span></a>
-</span><span id="Step-291"><a href="#Step-291"><span class="linenos">291</span></a>    <span class="nd">@property</span>
-</span><span id="Step-292"><a href="#Step-292"><span class="linenos">292</span></a>    <span class="k">def</span> <span class="nf">id</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
-</span><span id="Step-293"><a href="#Step-293"><span class="linenos">293</span></a>        <span class="n">name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">name</span>
-</span><span id="Step-294"><a href="#Step-294"><span class="linenos">294</span></a>        <span class="n">name</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">&quot; </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">&quot;</span> <span class="k">if</span> <span class="n">name</span> <span class="k">else</span> <span class="s2">&quot;&quot;</span>
-</span><span id="Step-295"><a href="#Step-295"><span class="linenos">295</span></a>        <span class="k">return</span> <span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">type_name</span><span class="si">}</span><span class="s2">:</span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2"> (</span><span class="si">{</span><span class="nb">id</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span><span class="si">}</span><span class="s2">)&quot;</span>
-</span><span id="Step-296"><a href="#Step-296"><span class="linenos">296</span></a>
-</span><span id="Step-297"><a href="#Step-297"><span class="linenos">297</span></a>    <span class="k">def</span> <span class="nf">_to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">_indent</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
-</span><span id="Step-298"><a href="#Step-298"><span class="linenos">298</span></a>        <span class="k">return</span> <span class="p">[]</span>
+</span><span id="Step-122"><a href="#Step-122"><span class="linenos">122</span></a>            <span class="n">join</span><span class="o">.</span><span class="n">source_name</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
+</span><span id="Step-123"><a href="#Step-123"><span class="linenos">123</span></a>            <span class="n">join</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">step</span><span class="p">)</span>
+</span><span id="Step-124"><a href="#Step-124"><span class="linenos">124</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">join</span>
+</span><span id="Step-125"><a href="#Step-125"><span class="linenos">125</span></a>
+</span><span id="Step-126"><a href="#Step-126"><span class="linenos">126</span></a>        <span class="n">projections</span> <span class="o">=</span> <span class="p">[]</span>  <span class="c1"># final selects in this chain of steps representing a select</span>
+</span><span id="Step-127"><a href="#Step-127"><span class="linenos">127</span></a>        <span class="n">operands</span> <span class="o">=</span> <span class="p">{}</span>  <span class="c1"># intermediate computations of agg funcs eg x + 1 in SUM(x + 1)</span>
+</span><span id="Step-128"><a href="#Step-128"><span class="linenos">128</span></a>        <span class="n">aggregations</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span>
+</span><span id="Step-129"><a href="#Step-129"><span class="linenos">129</span></a>        <span class="n">next_operand_name</span> <span class="o">=</span> <span class="n">name_sequence</span><span class="p">(</span><span class="s2">&quot;_a_&quot;</span><span class="p">)</span>
+</span><span id="Step-130"><a href="#Step-130"><span class="linenos">130</span></a>
+</span><span id="Step-131"><a href="#Step-131"><span class="linenos">131</span></a>        <span class="k">def</span> <span class="nf">extract_agg_operands</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
+</span><span id="Step-132"><a href="#Step-132"><span class="linenos">132</span></a>            <span class="n">agg_funcs</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">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="Step-133"><a href="#Step-133"><span class="linenos">133</span></a>            <span class="k">if</span> <span class="n">agg_funcs</span><span class="p">:</span>
+</span><span id="Step-134"><a href="#Step-134"><span class="linenos">134</span></a>                <span class="n">aggregations</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span>
+</span><span id="Step-135"><a href="#Step-135"><span class="linenos">135</span></a>
+</span><span id="Step-136"><a href="#Step-136"><span class="linenos">136</span></a>            <span class="k">for</span> <span class="n">agg</span> <span class="ow">in</span> <span class="n">agg_funcs</span><span class="p">:</span>
+</span><span id="Step-137"><a href="#Step-137"><span class="linenos">137</span></a>                <span class="k">for</span> <span class="n">operand</span> <span class="ow">in</span> <span class="n">agg</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">():</span>
+</span><span id="Step-138"><a href="#Step-138"><span class="linenos">138</span></a>                    <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">operand</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="Step-139"><a href="#Step-139"><span class="linenos">139</span></a>                        <span class="k">continue</span>
+</span><span id="Step-140"><a href="#Step-140"><span class="linenos">140</span></a>                    <span class="k">if</span> <span class="n">operand</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">operands</span><span class="p">:</span>
+</span><span id="Step-141"><a href="#Step-141"><span class="linenos">141</span></a>                        <span class="n">operands</span><span class="p">[</span><span class="n">operand</span><span class="p">]</span> <span class="o">=</span> <span class="n">next_operand_name</span><span class="p">()</span>
+</span><span id="Step-142"><a href="#Step-142"><span class="linenos">142</span></a>
+</span><span id="Step-143"><a href="#Step-143"><span class="linenos">143</span></a>                    <span class="n">operand</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">column</span><span class="p">(</span><span class="n">operands</span><span class="p">[</span><span class="n">operand</span><span class="p">],</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">))</span>
+</span><span id="Step-144"><a href="#Step-144"><span class="linenos">144</span></a>
+</span><span id="Step-145"><a href="#Step-145"><span class="linenos">145</span></a>            <span class="k">return</span> <span class="nb">bool</span><span class="p">(</span><span class="n">agg_funcs</span><span class="p">)</span>
+</span><span id="Step-146"><a href="#Step-146"><span class="linenos">146</span></a>
+</span><span id="Step-147"><a href="#Step-147"><span class="linenos">147</span></a>        <span class="k">def</span> <span class="nf">set_ops_and_aggs</span><span class="p">(</span><span class="n">step</span><span class="p">):</span>
+</span><span id="Step-148"><a href="#Step-148"><span class="linenos">148</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">operands</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">alias</span><span class="p">(</span><span class="n">operand</span><span class="p">,</span> <span class="n">alias_</span><span class="p">)</span> <span class="k">for</span> <span class="n">operand</span><span class="p">,</span> <span class="n">alias_</span> <span class="ow">in</span> <span class="n">operands</span><span class="o">.</span><span class="n">items</span><span class="p">())</span>
+</span><span id="Step-149"><a href="#Step-149"><span class="linenos">149</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">aggregations</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">aggregations</span><span class="p">)</span>
+</span><span id="Step-150"><a href="#Step-150"><span class="linenos">150</span></a>
+</span><span id="Step-151"><a href="#Step-151"><span class="linenos">151</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="Step-152"><a href="#Step-152"><span class="linenos">152</span></a>            <span class="k">if</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><span id="Step-153"><a href="#Step-153"><span class="linenos">153</span></a>                <span class="n">projections</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">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">step</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">))</span>
+</span><span id="Step-154"><a href="#Step-154"><span class="linenos">154</span></a>                <span class="n">extract_agg_operands</span><span class="p">(</span><span class="n">e</span><span class="p">)</span>
+</span><span id="Step-155"><a href="#Step-155"><span class="linenos">155</span></a>            <span class="k">else</span><span class="p">:</span>
+</span><span id="Step-156"><a href="#Step-156"><span class="linenos">156</span></a>                <span class="n">projections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">e</span><span class="p">)</span>
+</span><span id="Step-157"><a href="#Step-157"><span class="linenos">157</span></a>
+</span><span id="Step-158"><a href="#Step-158"><span class="linenos">158</span></a>        <span class="n">where</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">&quot;where&quot;</span><span class="p">)</span>
+</span><span id="Step-159"><a href="#Step-159"><span class="linenos">159</span></a>
+</span><span id="Step-160"><a href="#Step-160"><span class="linenos">160</span></a>        <span class="k">if</span> <span class="n">where</span><span class="p">:</span>
+</span><span id="Step-161"><a href="#Step-161"><span class="linenos">161</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">condition</span> <span class="o">=</span> <span class="n">where</span><span class="o">.</span><span class="n">this</span>
+</span><span id="Step-162"><a href="#Step-162"><span class="linenos">162</span></a>
+</span><span id="Step-163"><a href="#Step-163"><span class="linenos">163</span></a>        <span class="n">group</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">&quot;group&quot;</span><span class="p">)</span>
+</span><span id="Step-164"><a href="#Step-164"><span class="linenos">164</span></a>
+</span><span id="Step-165"><a href="#Step-165"><span class="linenos">165</span></a>        <span class="k">if</span> <span class="n">group</span> <span class="ow">or</span> <span class="n">aggregations</span><span class="p">:</span>
+</span><span id="Step-166"><a href="#Step-166"><span class="linenos">166</span></a>            <span class="n">aggregate</span> <span class="o">=</span> <span class="n">Aggregate</span><span class="p">()</span>
+</span><span id="Step-167"><a href="#Step-167"><span class="linenos">167</span></a>            <span class="n">aggregate</span><span class="o">.</span><span class="n">source</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
+</span><span id="Step-168"><a href="#Step-168"><span class="linenos">168</span></a>            <span class="n">aggregate</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
+</span><span id="Step-169"><a href="#Step-169"><span class="linenos">169</span></a>
+</span><span id="Step-170"><a href="#Step-170"><span class="linenos">170</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">&quot;having&quot;</span><span class="p">)</span>
+</span><span id="Step-171"><a href="#Step-171"><span class="linenos">171</span></a>
+</span><span id="Step-172"><a href="#Step-172"><span class="linenos">172</span></a>            <span class="k">if</span> <span class="n">having</span><span class="p">:</span>
+</span><span id="Step-173"><a href="#Step-173"><span class="linenos">173</span></a>                <span class="k">if</span> <span class="n">extract_agg_operands</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">having</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="s2">&quot;_h&quot;</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">)):</span>
+</span><span id="Step-174"><a href="#Step-174"><span class="linenos">174</span></a>                    <span class="n">aggregate</span><span class="o">.</span><span class="n">condition</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="s2">&quot;_h&quot;</span><span class="p">,</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
+</span><span id="Step-175"><a href="#Step-175"><span class="linenos">175</span></a>                <span class="k">else</span><span class="p">:</span>
+</span><span id="Step-176"><a href="#Step-176"><span class="linenos">176</span></a>                    <span class="n">aggregate</span><span class="o">.</span><span class="n">condition</span> <span class="o">=</span> <span class="n">having</span><span class="o">.</span><span class="n">this</span>
+</span><span id="Step-177"><a href="#Step-177"><span class="linenos">177</span></a>
+</span><span id="Step-178"><a href="#Step-178"><span class="linenos">178</span></a>            <span class="n">set_ops_and_aggs</span><span class="p">(</span><span class="n">aggregate</span><span class="p">)</span>
+</span><span id="Step-179"><a href="#Step-179"><span class="linenos">179</span></a>
+</span><span id="Step-180"><a href="#Step-180"><span class="linenos">180</span></a>            <span class="c1"># give aggregates names and replace projections with references to them</span>
+</span><span id="Step-181"><a href="#Step-181"><span class="linenos">181</span></a>            <span class="n">aggregate</span><span class="o">.</span><span class="n">group</span> <span class="o">=</span> <span class="p">{</span>
+</span><span id="Step-182"><a href="#Step-182"><span class="linenos">182</span></a>                <span class="sa">f</span><span class="s2">&quot;_g</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">:</span> <span class="n">e</span> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">e</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">group</span><span class="o">.</span><span class="n">expressions</span> <span class="k">if</span> <span class="n">group</span> <span class="k">else</span> <span class="p">[])</span>
+</span><span id="Step-183"><a href="#Step-183"><span class="linenos">183</span></a>            <span class="p">}</span>
+</span><span id="Step-184"><a href="#Step-184"><span class="linenos">184</span></a>
+</span><span id="Step-185"><a href="#Step-185"><span class="linenos">185</span></a>            <span class="n">intermediate</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">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 class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="p">{}</span>
+</span><span id="Step-186"><a href="#Step-186"><span class="linenos">186</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">aggregate</span><span class="o">.</span><span class="n">group</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
+</span><span id="Step-187"><a href="#Step-187"><span class="linenos">187</span></a>                <span class="n">intermediate</span><span class="p">[</span><span class="n">v</span><span class="p">]</span> <span class="o">=</span> <span class="n">k</span>
+</span><span id="Step-188"><a href="#Step-188"><span class="linenos">188</span></a>                <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">v</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="Step-189"><a href="#Step-189"><span class="linenos">189</span></a>                    <span class="n">intermediate</span><span class="p">[</span><span class="n">v</span><span class="o">.</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">k</span>
+</span><span id="Step-190"><a href="#Step-190"><span class="linenos">190</span></a>
+</span><span id="Step-191"><a href="#Step-191"><span class="linenos">191</span></a>            <span class="k">for</span> <span class="n">projection</span> <span class="ow">in</span> <span class="n">projections</span><span class="p">:</span>
+</span><span id="Step-192"><a href="#Step-192"><span class="linenos">192</span></a>                <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">projection</span><span class="o">.</span><span class="n">walk</span><span class="p">():</span>
+</span><span id="Step-193"><a href="#Step-193"><span class="linenos">193</span></a>                    <span class="n">name</span> <span class="o">=</span> <span class="n">intermediate</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
+</span><span id="Step-194"><a href="#Step-194"><span class="linenos">194</span></a>                    <span class="k">if</span> <span class="n">name</span><span class="p">:</span>
+</span><span id="Step-195"><a href="#Step-195"><span class="linenos">195</span></a>                        <span class="n">node</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">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">))</span>
+</span><span id="Step-196"><a href="#Step-196"><span class="linenos">196</span></a>
+</span><span id="Step-197"><a href="#Step-197"><span class="linenos">197</span></a>            <span class="k">if</span> <span class="n">aggregate</span><span class="o">.</span><span class="n">condition</span><span class="p">:</span>
+</span><span id="Step-198"><a href="#Step-198"><span class="linenos">198</span></a>                <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">aggregate</span><span class="o">.</span><span class="n">condition</span><span class="o">.</span><span class="n">walk</span><span class="p">():</span>
+</span><span id="Step-199"><a href="#Step-199"><span class="linenos">199</span></a>                    <span class="n">name</span> <span class="o">=</span> <span class="n">intermediate</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> <span class="ow">or</span> <span class="n">intermediate</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="Step-200"><a href="#Step-200"><span class="linenos">200</span></a>                    <span class="k">if</span> <span class="n">name</span><span class="p">:</span>
+</span><span id="Step-201"><a href="#Step-201"><span class="linenos">201</span></a>                        <span class="n">node</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">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">))</span>
+</span><span id="Step-202"><a href="#Step-202"><span class="linenos">202</span></a>
+</span><span id="Step-203"><a href="#Step-203"><span class="linenos">203</span></a>            <span class="n">aggregate</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">step</span><span class="p">)</span>
+</span><span id="Step-204"><a href="#Step-204"><span class="linenos">204</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">aggregate</span>
+</span><span id="Step-205"><a href="#Step-205"><span class="linenos">205</span></a>
+</span><span id="Step-206"><a href="#Step-206"><span class="linenos">206</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">&quot;order&quot;</span><span class="p">)</span>
+</span><span id="Step-207"><a href="#Step-207"><span class="linenos">207</span></a>
+</span><span id="Step-208"><a href="#Step-208"><span class="linenos">208</span></a>        <span class="k">if</span> <span class="n">order</span><span class="p">:</span>
+</span><span id="Step-209"><a href="#Step-209"><span class="linenos">209</span></a>            <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">step</span><span class="p">,</span> <span class="n">Aggregate</span><span class="p">):</span>
+</span><span id="Step-210"><a href="#Step-210"><span class="linenos">210</span></a>                <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">ordered</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">order</span><span class="o">.</span><span class="n">expressions</span><span class="p">):</span>
+</span><span id="Step-211"><a href="#Step-211"><span class="linenos">211</span></a>                    <span class="k">if</span> <span class="n">extract_agg_operands</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">ordered</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="sa">f</span><span class="s2">&quot;_o_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">)):</span>
+</span><span id="Step-212"><a href="#Step-212"><span class="linenos">212</span></a>                        <span class="n">ordered</span><span class="o">.</span><span class="n">this</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">column</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;_o_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">,</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">))</span>
+</span><span id="Step-213"><a href="#Step-213"><span class="linenos">213</span></a>
+</span><span id="Step-214"><a href="#Step-214"><span class="linenos">214</span></a>                <span class="n">set_ops_and_aggs</span><span class="p">(</span><span class="n">aggregate</span><span class="p">)</span>
+</span><span id="Step-215"><a href="#Step-215"><span class="linenos">215</span></a>
+</span><span id="Step-216"><a href="#Step-216"><span class="linenos">216</span></a>            <span class="n">sort</span> <span class="o">=</span> <span class="n">Sort</span><span class="p">()</span>
+</span><span id="Step-217"><a href="#Step-217"><span class="linenos">217</span></a>            <span class="n">sort</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
+</span><span id="Step-218"><a href="#Step-218"><span class="linenos">218</span></a>            <span class="n">sort</span><span class="o">.</span><span class="n">key</span> <span class="o">=</span> <span class="n">order</span><span class="o">.</span><span class="n">expressions</span>
+</span><span id="Step-219"><a href="#Step-219"><span class="linenos">219</span></a>            <span class="n">sort</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">step</span><span class="p">)</span>
+</span><span id="Step-220"><a href="#Step-220"><span class="linenos">220</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">sort</span>
+</span><span id="Step-221"><a href="#Step-221"><span class="linenos">221</span></a>
+</span><span id="Step-222"><a href="#Step-222"><span class="linenos">222</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">projections</span> <span class="o">=</span> <span class="n">projections</span>
+</span><span id="Step-223"><a href="#Step-223"><span class="linenos">223</span></a>
+</span><span id="Step-224"><a href="#Step-224"><span class="linenos">224</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">Select</span><span class="p">)</span> <span class="ow">and</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">&quot;distinct&quot;</span><span class="p">):</span>
+</span><span id="Step-225"><a href="#Step-225"><span class="linenos">225</span></a>            <span class="n">distinct</span> <span class="o">=</span> <span class="n">Aggregate</span><span class="p">()</span>
+</span><span id="Step-226"><a href="#Step-226"><span class="linenos">226</span></a>            <span class="n">distinct</span><span class="o">.</span><span class="n">source</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
+</span><span id="Step-227"><a href="#Step-227"><span class="linenos">227</span></a>            <span class="n">distinct</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
+</span><span id="Step-228"><a href="#Step-228"><span class="linenos">228</span></a>            <span class="n">distinct</span><span class="o">.</span><span class="n">group</span> <span class="o">=</span> <span class="p">{</span>
+</span><span id="Step-229"><a href="#Step-229"><span class="linenos">229</span></a>                <span class="n">e</span><span class="o">.</span><span class="n">alias_or_name</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">col</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 class="n">table</span><span class="o">=</span><span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">)</span>
+</span><span id="Step-230"><a href="#Step-230"><span class="linenos">230</span></a>                <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">projections</span> <span class="ow">or</span> <span class="n">expression</span><span class="o">.</span><span class="n">expressions</span>
+</span><span id="Step-231"><a href="#Step-231"><span class="linenos">231</span></a>            <span class="p">}</span>
+</span><span id="Step-232"><a href="#Step-232"><span class="linenos">232</span></a>            <span class="n">distinct</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">step</span><span class="p">)</span>
+</span><span id="Step-233"><a href="#Step-233"><span class="linenos">233</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">distinct</span>
+</span><span id="Step-234"><a href="#Step-234"><span class="linenos">234</span></a>
+</span><span id="Step-235"><a href="#Step-235"><span class="linenos">235</span></a>        <span class="n">limit</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">&quot;limit&quot;</span><span class="p">)</span>
+</span><span id="Step-236"><a href="#Step-236"><span class="linenos">236</span></a>
+</span><span id="Step-237"><a href="#Step-237"><span class="linenos">237</span></a>        <span class="k">if</span> <span class="n">limit</span><span class="p">:</span>
+</span><span id="Step-238"><a href="#Step-238"><span class="linenos">238</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">limit</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">limit</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="s2">&quot;expression&quot;</span><span class="p">))</span>
+</span><span id="Step-239"><a href="#Step-239"><span class="linenos">239</span></a>
+</span><span id="Step-240"><a href="#Step-240"><span class="linenos">240</span></a>        <span class="k">return</span> <span class="n">step</span>
+</span><span id="Step-241"><a href="#Step-241"><span class="linenos">241</span></a>
+</span><span id="Step-242"><a href="#Step-242"><span class="linenos">242</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="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
+</span><span id="Step-243"><a href="#Step-243"><span class="linenos">243</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">name</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><span id="Step-244"><a href="#Step-244"><span class="linenos">244</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">dependencies</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Set</span><span class="p">[</span><span class="n">Step</span><span class="p">]</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span>
+</span><span id="Step-245"><a href="#Step-245"><span class="linenos">245</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">dependents</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Set</span><span class="p">[</span><span class="n">Step</span><span class="p">]</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span>
+</span><span id="Step-246"><a href="#Step-246"><span class="linenos">246</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">projections</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">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">]</span> <span class="o">=</span> <span class="p">[]</span>
+</span><span id="Step-247"><a href="#Step-247"><span class="linenos">247</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">limit</span><span class="p">:</span> <span class="nb">float</span> <span class="o">=</span> <span class="n">math</span><span class="o">.</span><span class="n">inf</span>
+</span><span id="Step-248"><a href="#Step-248"><span class="linenos">248</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">condition</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="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>
+</span><span id="Step-249"><a href="#Step-249"><span class="linenos">249</span></a>
+</span><span id="Step-250"><a href="#Step-250"><span class="linenos">250</span></a>    <span class="k">def</span> <span class="nf">add_dependency</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">dependency</span><span class="p">:</span> <span class="n">Step</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
+</span><span id="Step-251"><a href="#Step-251"><span class="linenos">251</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">dependencies</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">dependency</span><span class="p">)</span>
+</span><span id="Step-252"><a href="#Step-252"><span class="linenos">252</span></a>        <span class="n">dependency</span><span class="o">.</span><span class="n">dependents</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span>
+</span><span id="Step-253"><a href="#Step-253"><span class="linenos">253</span></a>
+</span><span id="Step-254"><a href="#Step-254"><span class="linenos">254</span></a>    <span class="k">def</span> <span class="fm">__repr__</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
+</span><span id="Step-255"><a href="#Step-255"><span class="linenos">255</span></a>        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">to_s</span><span class="p">()</span>
+</span><span id="Step-256"><a href="#Step-256"><span class="linenos">256</span></a>
+</span><span id="Step-257"><a href="#Step-257"><span class="linenos">257</span></a>    <span class="k">def</span> <span class="nf">to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">level</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">0</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
+</span><span id="Step-258"><a href="#Step-258"><span class="linenos">258</span></a>        <span class="n">indent</span> <span class="o">=</span> <span class="s2">&quot;  &quot;</span> <span class="o">*</span> <span class="n">level</span>
+</span><span id="Step-259"><a href="#Step-259"><span class="linenos">259</span></a>        <span class="n">nested</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">    &quot;</span>
+</span><span id="Step-260"><a href="#Step-260"><span class="linenos">260</span></a>
+</span><span id="Step-261"><a href="#Step-261"><span class="linenos">261</span></a>        <span class="n">context</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_to_s</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">  &quot;</span><span class="p">)</span>
+</span><span id="Step-262"><a href="#Step-262"><span class="linenos">262</span></a>
+</span><span id="Step-263"><a href="#Step-263"><span class="linenos">263</span></a>        <span class="k">if</span> <span class="n">context</span><span class="p">:</span>
+</span><span id="Step-264"><a href="#Step-264"><span class="linenos">264</span></a>            <span class="n">context</span> <span class="o">=</span> <span class="p">[</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Context:&quot;</span><span class="p">]</span> <span class="o">+</span> <span class="n">context</span>
+</span><span id="Step-265"><a href="#Step-265"><span class="linenos">265</span></a>
+</span><span id="Step-266"><a href="#Step-266"><span class="linenos">266</span></a>        <span class="n">lines</span> <span class="o">=</span> <span class="p">[</span>
+</span><span id="Step-267"><a href="#Step-267"><span class="linenos">267</span></a>            <span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">- </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">id</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">,</span>
+</span><span id="Step-268"><a href="#Step-268"><span class="linenos">268</span></a>            <span class="o">*</span><span class="n">context</span><span class="p">,</span>
+</span><span id="Step-269"><a href="#Step-269"><span class="linenos">269</span></a>            <span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Projections:&quot;</span><span class="p">,</span>
+</span><span id="Step-270"><a href="#Step-270"><span class="linenos">270</span></a>        <span class="p">]</span>
+</span><span id="Step-271"><a href="#Step-271"><span class="linenos">271</span></a>
+</span><span id="Step-272"><a href="#Step-272"><span class="linenos">272</span></a>        <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">projections</span><span class="p">:</span>
+</span><span id="Step-273"><a href="#Step-273"><span class="linenos">273</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="n">expression</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
+</span><span id="Step-274"><a href="#Step-274"><span class="linenos">274</span></a>
+</span><span id="Step-275"><a href="#Step-275"><span class="linenos">275</span></a>        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">condition</span><span class="p">:</span>
+</span><span id="Step-276"><a href="#Step-276"><span class="linenos">276</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Condition: </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">condition</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
+</span><span id="Step-277"><a href="#Step-277"><span class="linenos">277</span></a>
+</span><span id="Step-278"><a href="#Step-278"><span class="linenos">278</span></a>        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">limit</span> <span class="ow">is</span> <span class="ow">not</span> <span class="n">math</span><span class="o">.</span><span class="n">inf</span><span class="p">:</span>
+</span><span id="Step-279"><a href="#Step-279"><span class="linenos">279</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Limit: </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">limit</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
+</span><span id="Step-280"><a href="#Step-280"><span class="linenos">280</span></a>
+</span><span id="Step-281"><a href="#Step-281"><span class="linenos">281</span></a>        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">dependencies</span><span class="p">:</span>
+</span><span id="Step-282"><a href="#Step-282"><span class="linenos">282</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Dependencies:&quot;</span><span class="p">)</span>
+</span><span id="Step-283"><a href="#Step-283"><span class="linenos">283</span></a>            <span class="k">for</span> <span class="n">dependency</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">dependencies</span><span class="p">:</span>
+</span><span id="Step-284"><a href="#Step-284"><span class="linenos">284</span></a>                <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s2">&quot;  &quot;</span> <span class="o">+</span> <span class="n">dependency</span><span class="o">.</span><span class="n">to_s</span><span class="p">(</span><span class="n">level</span> <span class="o">+</span> <span class="mi">1</span><span class="p">))</span>
+</span><span id="Step-285"><a href="#Step-285"><span class="linenos">285</span></a>
+</span><span id="Step-286"><a href="#Step-286"><span class="linenos">286</span></a>        <span class="k">return</span> <span class="s2">&quot;</span><span class="se">\n</span><span class="s2">&quot;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">lines</span><span class="p">)</span>
+</span><span id="Step-287"><a href="#Step-287"><span class="linenos">287</span></a>
+</span><span id="Step-288"><a href="#Step-288"><span class="linenos">288</span></a>    <span class="nd">@property</span>
+</span><span id="Step-289"><a href="#Step-289"><span class="linenos">289</span></a>    <span class="k">def</span> <span class="nf">type_name</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
+</span><span id="Step-290"><a href="#Step-290"><span class="linenos">290</span></a>        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="vm">__class__</span><span class="o">.</span><span class="vm">__name__</span>
+</span><span id="Step-291"><a href="#Step-291"><span class="linenos">291</span></a>
+</span><span id="Step-292"><a href="#Step-292"><span class="linenos">292</span></a>    <span class="nd">@property</span>
+</span><span id="Step-293"><a href="#Step-293"><span class="linenos">293</span></a>    <span class="k">def</span> <span class="nf">id</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
+</span><span id="Step-294"><a href="#Step-294"><span class="linenos">294</span></a>        <span class="n">name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">name</span>
+</span><span id="Step-295"><a href="#Step-295"><span class="linenos">295</span></a>        <span class="n">name</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">&quot; </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">&quot;</span> <span class="k">if</span> <span class="n">name</span> <span class="k">else</span> <span class="s2">&quot;&quot;</span>
+</span><span id="Step-296"><a href="#Step-296"><span class="linenos">296</span></a>        <span class="k">return</span> <span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">type_name</span><span class="si">}</span><span class="s2">:</span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2"> (</span><span class="si">{</span><span class="nb">id</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span><span class="si">}</span><span class="s2">)&quot;</span>
+</span><span id="Step-297"><a href="#Step-297"><span class="linenos">297</span></a>
+</span><span id="Step-298"><a href="#Step-298"><span class="linenos">298</span></a>    <span class="k">def</span> <span class="nf">_to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">_indent</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
+</span><span id="Step-299"><a href="#Step-299"><span class="linenos">299</span></a>        <span class="k">return</span> <span class="p">[]</span>
 </span></pre></div>
 
 
@@ -1153,124 +1159,125 @@
 </span><span id="Step.from_expression-119"><a href="#Step.from_expression-119"><span class="linenos">119</span></a>        <span class="k">if</span> <span class="n">joins</span><span class="p">:</span>
 </span><span id="Step.from_expression-120"><a href="#Step.from_expression-120"><span class="linenos">120</span></a>            <span class="n">join</span> <span class="o">=</span> <span class="n">Join</span><span class="o">.</span><span class="n">from_joins</span><span class="p">(</span><span class="n">joins</span><span class="p">,</span> <span class="n">ctes</span><span class="p">)</span>
 </span><span id="Step.from_expression-121"><a href="#Step.from_expression-121"><span class="linenos">121</span></a>            <span class="n">join</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
-</span><span id="Step.from_expression-122"><a href="#Step.from_expression-122"><span class="linenos">122</span></a>            <span class="n">join</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">step</span><span class="p">)</span>
-</span><span id="Step.from_expression-123"><a href="#Step.from_expression-123"><span class="linenos">123</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">join</span>
-</span><span id="Step.from_expression-124"><a href="#Step.from_expression-124"><span class="linenos">124</span></a>
-</span><span id="Step.from_expression-125"><a href="#Step.from_expression-125"><span class="linenos">125</span></a>        <span class="n">projections</span> <span class="o">=</span> <span class="p">[]</span>  <span class="c1"># final selects in this chain of steps representing a select</span>
-</span><span id="Step.from_expression-126"><a href="#Step.from_expression-126"><span class="linenos">126</span></a>        <span class="n">operands</span> <span class="o">=</span> <span class="p">{}</span>  <span class="c1"># intermediate computations of agg funcs eg x + 1 in SUM(x + 1)</span>
-</span><span id="Step.from_expression-127"><a href="#Step.from_expression-127"><span class="linenos">127</span></a>        <span class="n">aggregations</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span>
-</span><span id="Step.from_expression-128"><a href="#Step.from_expression-128"><span class="linenos">128</span></a>        <span class="n">next_operand_name</span> <span class="o">=</span> <span class="n">name_sequence</span><span class="p">(</span><span class="s2">&quot;_a_&quot;</span><span class="p">)</span>
-</span><span id="Step.from_expression-129"><a href="#Step.from_expression-129"><span class="linenos">129</span></a>
-</span><span id="Step.from_expression-130"><a href="#Step.from_expression-130"><span class="linenos">130</span></a>        <span class="k">def</span> <span class="nf">extract_agg_operands</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
-</span><span id="Step.from_expression-131"><a href="#Step.from_expression-131"><span class="linenos">131</span></a>            <span class="n">agg_funcs</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">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="Step.from_expression-132"><a href="#Step.from_expression-132"><span class="linenos">132</span></a>            <span class="k">if</span> <span class="n">agg_funcs</span><span class="p">:</span>
-</span><span id="Step.from_expression-133"><a href="#Step.from_expression-133"><span class="linenos">133</span></a>                <span class="n">aggregations</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span>
-</span><span id="Step.from_expression-134"><a href="#Step.from_expression-134"><span class="linenos">134</span></a>
-</span><span id="Step.from_expression-135"><a href="#Step.from_expression-135"><span class="linenos">135</span></a>            <span class="k">for</span> <span class="n">agg</span> <span class="ow">in</span> <span class="n">agg_funcs</span><span class="p">:</span>
-</span><span id="Step.from_expression-136"><a href="#Step.from_expression-136"><span class="linenos">136</span></a>                <span class="k">for</span> <span class="n">operand</span> <span class="ow">in</span> <span class="n">agg</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">():</span>
-</span><span id="Step.from_expression-137"><a href="#Step.from_expression-137"><span class="linenos">137</span></a>                    <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">operand</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="Step.from_expression-138"><a href="#Step.from_expression-138"><span class="linenos">138</span></a>                        <span class="k">continue</span>
-</span><span id="Step.from_expression-139"><a href="#Step.from_expression-139"><span class="linenos">139</span></a>                    <span class="k">if</span> <span class="n">operand</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">operands</span><span class="p">:</span>
-</span><span id="Step.from_expression-140"><a href="#Step.from_expression-140"><span class="linenos">140</span></a>                        <span class="n">operands</span><span class="p">[</span><span class="n">operand</span><span class="p">]</span> <span class="o">=</span> <span class="n">next_operand_name</span><span class="p">()</span>
-</span><span id="Step.from_expression-141"><a href="#Step.from_expression-141"><span class="linenos">141</span></a>
-</span><span id="Step.from_expression-142"><a href="#Step.from_expression-142"><span class="linenos">142</span></a>                    <span class="n">operand</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">column</span><span class="p">(</span><span class="n">operands</span><span class="p">[</span><span class="n">operand</span><span class="p">],</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">))</span>
-</span><span id="Step.from_expression-143"><a href="#Step.from_expression-143"><span class="linenos">143</span></a>
-</span><span id="Step.from_expression-144"><a href="#Step.from_expression-144"><span class="linenos">144</span></a>            <span class="k">return</span> <span class="nb">bool</span><span class="p">(</span><span class="n">agg_funcs</span><span class="p">)</span>
-</span><span id="Step.from_expression-145"><a href="#Step.from_expression-145"><span class="linenos">145</span></a>
-</span><span id="Step.from_expression-146"><a href="#Step.from_expression-146"><span class="linenos">146</span></a>        <span class="k">def</span> <span class="nf">set_ops_and_aggs</span><span class="p">(</span><span class="n">step</span><span class="p">):</span>
-</span><span id="Step.from_expression-147"><a href="#Step.from_expression-147"><span class="linenos">147</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">operands</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">alias</span><span class="p">(</span><span class="n">operand</span><span class="p">,</span> <span class="n">alias_</span><span class="p">)</span> <span class="k">for</span> <span class="n">operand</span><span class="p">,</span> <span class="n">alias_</span> <span class="ow">in</span> <span class="n">operands</span><span class="o">.</span><span class="n">items</span><span class="p">())</span>
-</span><span id="Step.from_expression-148"><a href="#Step.from_expression-148"><span class="linenos">148</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">aggregations</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">aggregations</span><span class="p">)</span>
-</span><span id="Step.from_expression-149"><a href="#Step.from_expression-149"><span class="linenos">149</span></a>
-</span><span id="Step.from_expression-150"><a href="#Step.from_expression-150"><span class="linenos">150</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="Step.from_expression-151"><a href="#Step.from_expression-151"><span class="linenos">151</span></a>            <span class="k">if</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><span id="Step.from_expression-152"><a href="#Step.from_expression-152"><span class="linenos">152</span></a>                <span class="n">projections</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">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">step</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">))</span>
-</span><span id="Step.from_expression-153"><a href="#Step.from_expression-153"><span class="linenos">153</span></a>                <span class="n">extract_agg_operands</span><span class="p">(</span><span class="n">e</span><span class="p">)</span>
-</span><span id="Step.from_expression-154"><a href="#Step.from_expression-154"><span class="linenos">154</span></a>            <span class="k">else</span><span class="p">:</span>
-</span><span id="Step.from_expression-155"><a href="#Step.from_expression-155"><span class="linenos">155</span></a>                <span class="n">projections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">e</span><span class="p">)</span>
-</span><span id="Step.from_expression-156"><a href="#Step.from_expression-156"><span class="linenos">156</span></a>
-</span><span id="Step.from_expression-157"><a href="#Step.from_expression-157"><span class="linenos">157</span></a>        <span class="n">where</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">&quot;where&quot;</span><span class="p">)</span>
-</span><span id="Step.from_expression-158"><a href="#Step.from_expression-158"><span class="linenos">158</span></a>
-</span><span id="Step.from_expression-159"><a href="#Step.from_expression-159"><span class="linenos">159</span></a>        <span class="k">if</span> <span class="n">where</span><span class="p">:</span>
-</span><span id="Step.from_expression-160"><a href="#Step.from_expression-160"><span class="linenos">160</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">condition</span> <span class="o">=</span> <span class="n">where</span><span class="o">.</span><span class="n">this</span>
-</span><span id="Step.from_expression-161"><a href="#Step.from_expression-161"><span class="linenos">161</span></a>
-</span><span id="Step.from_expression-162"><a href="#Step.from_expression-162"><span class="linenos">162</span></a>        <span class="n">group</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">&quot;group&quot;</span><span class="p">)</span>
-</span><span id="Step.from_expression-163"><a href="#Step.from_expression-163"><span class="linenos">163</span></a>
-</span><span id="Step.from_expression-164"><a href="#Step.from_expression-164"><span class="linenos">164</span></a>        <span class="k">if</span> <span class="n">group</span> <span class="ow">or</span> <span class="n">aggregations</span><span class="p">:</span>
-</span><span id="Step.from_expression-165"><a href="#Step.from_expression-165"><span class="linenos">165</span></a>            <span class="n">aggregate</span> <span class="o">=</span> <span class="n">Aggregate</span><span class="p">()</span>
-</span><span id="Step.from_expression-166"><a href="#Step.from_expression-166"><span class="linenos">166</span></a>            <span class="n">aggregate</span><span class="o">.</span><span class="n">source</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
-</span><span id="Step.from_expression-167"><a href="#Step.from_expression-167"><span class="linenos">167</span></a>            <span class="n">aggregate</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
-</span><span id="Step.from_expression-168"><a href="#Step.from_expression-168"><span class="linenos">168</span></a>
-</span><span id="Step.from_expression-169"><a href="#Step.from_expression-169"><span class="linenos">169</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">&quot;having&quot;</span><span class="p">)</span>
-</span><span id="Step.from_expression-170"><a href="#Step.from_expression-170"><span class="linenos">170</span></a>
-</span><span id="Step.from_expression-171"><a href="#Step.from_expression-171"><span class="linenos">171</span></a>            <span class="k">if</span> <span class="n">having</span><span class="p">:</span>
-</span><span id="Step.from_expression-172"><a href="#Step.from_expression-172"><span class="linenos">172</span></a>                <span class="k">if</span> <span class="n">extract_agg_operands</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">having</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="s2">&quot;_h&quot;</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">)):</span>
-</span><span id="Step.from_expression-173"><a href="#Step.from_expression-173"><span class="linenos">173</span></a>                    <span class="n">aggregate</span><span class="o">.</span><span class="n">condition</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="s2">&quot;_h&quot;</span><span class="p">,</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
-</span><span id="Step.from_expression-174"><a href="#Step.from_expression-174"><span class="linenos">174</span></a>                <span class="k">else</span><span class="p">:</span>
-</span><span id="Step.from_expression-175"><a href="#Step.from_expression-175"><span class="linenos">175</span></a>                    <span class="n">aggregate</span><span class="o">.</span><span class="n">condition</span> <span class="o">=</span> <span class="n">having</span><span class="o">.</span><span class="n">this</span>
-</span><span id="Step.from_expression-176"><a href="#Step.from_expression-176"><span class="linenos">176</span></a>
-</span><span id="Step.from_expression-177"><a href="#Step.from_expression-177"><span class="linenos">177</span></a>            <span class="n">set_ops_and_aggs</span><span class="p">(</span><span class="n">aggregate</span><span class="p">)</span>
-</span><span id="Step.from_expression-178"><a href="#Step.from_expression-178"><span class="linenos">178</span></a>
-</span><span id="Step.from_expression-179"><a href="#Step.from_expression-179"><span class="linenos">179</span></a>            <span class="c1"># give aggregates names and replace projections with references to them</span>
-</span><span id="Step.from_expression-180"><a href="#Step.from_expression-180"><span class="linenos">180</span></a>            <span class="n">aggregate</span><span class="o">.</span><span class="n">group</span> <span class="o">=</span> <span class="p">{</span>
-</span><span id="Step.from_expression-181"><a href="#Step.from_expression-181"><span class="linenos">181</span></a>                <span class="sa">f</span><span class="s2">&quot;_g</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">:</span> <span class="n">e</span> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">e</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">group</span><span class="o">.</span><span class="n">expressions</span> <span class="k">if</span> <span class="n">group</span> <span class="k">else</span> <span class="p">[])</span>
-</span><span id="Step.from_expression-182"><a href="#Step.from_expression-182"><span class="linenos">182</span></a>            <span class="p">}</span>
-</span><span id="Step.from_expression-183"><a href="#Step.from_expression-183"><span class="linenos">183</span></a>
-</span><span id="Step.from_expression-184"><a href="#Step.from_expression-184"><span class="linenos">184</span></a>            <span class="n">intermediate</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">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 class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="p">{}</span>
-</span><span id="Step.from_expression-185"><a href="#Step.from_expression-185"><span class="linenos">185</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">aggregate</span><span class="o">.</span><span class="n">group</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
-</span><span id="Step.from_expression-186"><a href="#Step.from_expression-186"><span class="linenos">186</span></a>                <span class="n">intermediate</span><span class="p">[</span><span class="n">v</span><span class="p">]</span> <span class="o">=</span> <span class="n">k</span>
-</span><span id="Step.from_expression-187"><a href="#Step.from_expression-187"><span class="linenos">187</span></a>                <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">v</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="Step.from_expression-188"><a href="#Step.from_expression-188"><span class="linenos">188</span></a>                    <span class="n">intermediate</span><span class="p">[</span><span class="n">v</span><span class="o">.</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">k</span>
-</span><span id="Step.from_expression-189"><a href="#Step.from_expression-189"><span class="linenos">189</span></a>
-</span><span id="Step.from_expression-190"><a href="#Step.from_expression-190"><span class="linenos">190</span></a>            <span class="k">for</span> <span class="n">projection</span> <span class="ow">in</span> <span class="n">projections</span><span class="p">:</span>
-</span><span id="Step.from_expression-191"><a href="#Step.from_expression-191"><span class="linenos">191</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="n">projection</span><span class="o">.</span><span class="n">walk</span><span class="p">():</span>
-</span><span id="Step.from_expression-192"><a href="#Step.from_expression-192"><span class="linenos">192</span></a>                    <span class="n">name</span> <span class="o">=</span> <span class="n">intermediate</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
-</span><span id="Step.from_expression-193"><a href="#Step.from_expression-193"><span class="linenos">193</span></a>                    <span class="k">if</span> <span class="n">name</span><span class="p">:</span>
-</span><span id="Step.from_expression-194"><a href="#Step.from_expression-194"><span class="linenos">194</span></a>                        <span class="n">node</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">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">))</span>
-</span><span id="Step.from_expression-195"><a href="#Step.from_expression-195"><span class="linenos">195</span></a>
-</span><span id="Step.from_expression-196"><a href="#Step.from_expression-196"><span class="linenos">196</span></a>            <span class="k">if</span> <span class="n">aggregate</span><span class="o">.</span><span class="n">condition</span><span class="p">:</span>
-</span><span id="Step.from_expression-197"><a href="#Step.from_expression-197"><span class="linenos">197</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="n">aggregate</span><span class="o">.</span><span class="n">condition</span><span class="o">.</span><span class="n">walk</span><span class="p">():</span>
-</span><span id="Step.from_expression-198"><a href="#Step.from_expression-198"><span class="linenos">198</span></a>                    <span class="n">name</span> <span class="o">=</span> <span class="n">intermediate</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> <span class="ow">or</span> <span class="n">intermediate</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="Step.from_expression-199"><a href="#Step.from_expression-199"><span class="linenos">199</span></a>                    <span class="k">if</span> <span class="n">name</span><span class="p">:</span>
-</span><span id="Step.from_expression-200"><a href="#Step.from_expression-200"><span class="linenos">200</span></a>                        <span class="n">node</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">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">))</span>
-</span><span id="Step.from_expression-201"><a href="#Step.from_expression-201"><span class="linenos">201</span></a>
-</span><span id="Step.from_expression-202"><a href="#Step.from_expression-202"><span class="linenos">202</span></a>            <span class="n">aggregate</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">step</span><span class="p">)</span>
-</span><span id="Step.from_expression-203"><a href="#Step.from_expression-203"><span class="linenos">203</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">aggregate</span>
-</span><span id="Step.from_expression-204"><a href="#Step.from_expression-204"><span class="linenos">204</span></a>
-</span><span id="Step.from_expression-205"><a href="#Step.from_expression-205"><span class="linenos">205</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">&quot;order&quot;</span><span class="p">)</span>
-</span><span id="Step.from_expression-206"><a href="#Step.from_expression-206"><span class="linenos">206</span></a>
-</span><span id="Step.from_expression-207"><a href="#Step.from_expression-207"><span class="linenos">207</span></a>        <span class="k">if</span> <span class="n">order</span><span class="p">:</span>
-</span><span id="Step.from_expression-208"><a href="#Step.from_expression-208"><span class="linenos">208</span></a>            <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">step</span><span class="p">,</span> <span class="n">Aggregate</span><span class="p">):</span>
-</span><span id="Step.from_expression-209"><a href="#Step.from_expression-209"><span class="linenos">209</span></a>                <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">ordered</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">order</span><span class="o">.</span><span class="n">expressions</span><span class="p">):</span>
-</span><span id="Step.from_expression-210"><a href="#Step.from_expression-210"><span class="linenos">210</span></a>                    <span class="k">if</span> <span class="n">extract_agg_operands</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">ordered</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="sa">f</span><span class="s2">&quot;_o_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">)):</span>
-</span><span id="Step.from_expression-211"><a href="#Step.from_expression-211"><span class="linenos">211</span></a>                        <span class="n">ordered</span><span class="o">.</span><span class="n">this</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">column</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;_o_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">,</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">))</span>
-</span><span id="Step.from_expression-212"><a href="#Step.from_expression-212"><span class="linenos">212</span></a>
-</span><span id="Step.from_expression-213"><a href="#Step.from_expression-213"><span class="linenos">213</span></a>                <span class="n">set_ops_and_aggs</span><span class="p">(</span><span class="n">aggregate</span><span class="p">)</span>
-</span><span id="Step.from_expression-214"><a href="#Step.from_expression-214"><span class="linenos">214</span></a>
-</span><span id="Step.from_expression-215"><a href="#Step.from_expression-215"><span class="linenos">215</span></a>            <span class="n">sort</span> <span class="o">=</span> <span class="n">Sort</span><span class="p">()</span>
-</span><span id="Step.from_expression-216"><a href="#Step.from_expression-216"><span class="linenos">216</span></a>            <span class="n">sort</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
-</span><span id="Step.from_expression-217"><a href="#Step.from_expression-217"><span class="linenos">217</span></a>            <span class="n">sort</span><span class="o">.</span><span class="n">key</span> <span class="o">=</span> <span class="n">order</span><span class="o">.</span><span class="n">expressions</span>
-</span><span id="Step.from_expression-218"><a href="#Step.from_expression-218"><span class="linenos">218</span></a>            <span class="n">sort</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">step</span><span class="p">)</span>
-</span><span id="Step.from_expression-219"><a href="#Step.from_expression-219"><span class="linenos">219</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">sort</span>
-</span><span id="Step.from_expression-220"><a href="#Step.from_expression-220"><span class="linenos">220</span></a>
-</span><span id="Step.from_expression-221"><a href="#Step.from_expression-221"><span class="linenos">221</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">projections</span> <span class="o">=</span> <span class="n">projections</span>
-</span><span id="Step.from_expression-222"><a href="#Step.from_expression-222"><span class="linenos">222</span></a>
-</span><span id="Step.from_expression-223"><a href="#Step.from_expression-223"><span class="linenos">223</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">Select</span><span class="p">)</span> <span class="ow">and</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">&quot;distinct&quot;</span><span class="p">):</span>
-</span><span id="Step.from_expression-224"><a href="#Step.from_expression-224"><span class="linenos">224</span></a>            <span class="n">distinct</span> <span class="o">=</span> <span class="n">Aggregate</span><span class="p">()</span>
-</span><span id="Step.from_expression-225"><a href="#Step.from_expression-225"><span class="linenos">225</span></a>            <span class="n">distinct</span><span class="o">.</span><span class="n">source</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
-</span><span id="Step.from_expression-226"><a href="#Step.from_expression-226"><span class="linenos">226</span></a>            <span class="n">distinct</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
-</span><span id="Step.from_expression-227"><a href="#Step.from_expression-227"><span class="linenos">227</span></a>            <span class="n">distinct</span><span class="o">.</span><span class="n">group</span> <span class="o">=</span> <span class="p">{</span>
-</span><span id="Step.from_expression-228"><a href="#Step.from_expression-228"><span class="linenos">228</span></a>                <span class="n">e</span><span class="o">.</span><span class="n">alias_or_name</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">col</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 class="n">table</span><span class="o">=</span><span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">)</span>
-</span><span id="Step.from_expression-229"><a href="#Step.from_expression-229"><span class="linenos">229</span></a>                <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">projections</span> <span class="ow">or</span> <span class="n">expression</span><span class="o">.</span><span class="n">expressions</span>
-</span><span id="Step.from_expression-230"><a href="#Step.from_expression-230"><span class="linenos">230</span></a>            <span class="p">}</span>
-</span><span id="Step.from_expression-231"><a href="#Step.from_expression-231"><span class="linenos">231</span></a>            <span class="n">distinct</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">step</span><span class="p">)</span>
-</span><span id="Step.from_expression-232"><a href="#Step.from_expression-232"><span class="linenos">232</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">distinct</span>
-</span><span id="Step.from_expression-233"><a href="#Step.from_expression-233"><span class="linenos">233</span></a>
-</span><span id="Step.from_expression-234"><a href="#Step.from_expression-234"><span class="linenos">234</span></a>        <span class="n">limit</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">&quot;limit&quot;</span><span class="p">)</span>
-</span><span id="Step.from_expression-235"><a href="#Step.from_expression-235"><span class="linenos">235</span></a>
-</span><span id="Step.from_expression-236"><a href="#Step.from_expression-236"><span class="linenos">236</span></a>        <span class="k">if</span> <span class="n">limit</span><span class="p">:</span>
-</span><span id="Step.from_expression-237"><a href="#Step.from_expression-237"><span class="linenos">237</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">limit</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">limit</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="s2">&quot;expression&quot;</span><span class="p">))</span>
-</span><span id="Step.from_expression-238"><a href="#Step.from_expression-238"><span class="linenos">238</span></a>
-</span><span id="Step.from_expression-239"><a href="#Step.from_expression-239"><span class="linenos">239</span></a>        <span class="k">return</span> <span class="n">step</span>
+</span><span id="Step.from_expression-122"><a href="#Step.from_expression-122"><span class="linenos">122</span></a>            <span class="n">join</span><span class="o">.</span><span class="n">source_name</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
+</span><span id="Step.from_expression-123"><a href="#Step.from_expression-123"><span class="linenos">123</span></a>            <span class="n">join</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">step</span><span class="p">)</span>
+</span><span id="Step.from_expression-124"><a href="#Step.from_expression-124"><span class="linenos">124</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">join</span>
+</span><span id="Step.from_expression-125"><a href="#Step.from_expression-125"><span class="linenos">125</span></a>
+</span><span id="Step.from_expression-126"><a href="#Step.from_expression-126"><span class="linenos">126</span></a>        <span class="n">projections</span> <span class="o">=</span> <span class="p">[]</span>  <span class="c1"># final selects in this chain of steps representing a select</span>
+</span><span id="Step.from_expression-127"><a href="#Step.from_expression-127"><span class="linenos">127</span></a>        <span class="n">operands</span> <span class="o">=</span> <span class="p">{}</span>  <span class="c1"># intermediate computations of agg funcs eg x + 1 in SUM(x + 1)</span>
+</span><span id="Step.from_expression-128"><a href="#Step.from_expression-128"><span class="linenos">128</span></a>        <span class="n">aggregations</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span>
+</span><span id="Step.from_expression-129"><a href="#Step.from_expression-129"><span class="linenos">129</span></a>        <span class="n">next_operand_name</span> <span class="o">=</span> <span class="n">name_sequence</span><span class="p">(</span><span class="s2">&quot;_a_&quot;</span><span class="p">)</span>
+</span><span id="Step.from_expression-130"><a href="#Step.from_expression-130"><span class="linenos">130</span></a>
+</span><span id="Step.from_expression-131"><a href="#Step.from_expression-131"><span class="linenos">131</span></a>        <span class="k">def</span> <span class="nf">extract_agg_operands</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span>
+</span><span id="Step.from_expression-132"><a href="#Step.from_expression-132"><span class="linenos">132</span></a>            <span class="n">agg_funcs</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">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="Step.from_expression-133"><a href="#Step.from_expression-133"><span class="linenos">133</span></a>            <span class="k">if</span> <span class="n">agg_funcs</span><span class="p">:</span>
+</span><span id="Step.from_expression-134"><a href="#Step.from_expression-134"><span class="linenos">134</span></a>                <span class="n">aggregations</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span>
+</span><span id="Step.from_expression-135"><a href="#Step.from_expression-135"><span class="linenos">135</span></a>
+</span><span id="Step.from_expression-136"><a href="#Step.from_expression-136"><span class="linenos">136</span></a>            <span class="k">for</span> <span class="n">agg</span> <span class="ow">in</span> <span class="n">agg_funcs</span><span class="p">:</span>
+</span><span id="Step.from_expression-137"><a href="#Step.from_expression-137"><span class="linenos">137</span></a>                <span class="k">for</span> <span class="n">operand</span> <span class="ow">in</span> <span class="n">agg</span><span class="o">.</span><span class="n">unnest_operands</span><span class="p">():</span>
+</span><span id="Step.from_expression-138"><a href="#Step.from_expression-138"><span class="linenos">138</span></a>                    <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">operand</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="Step.from_expression-139"><a href="#Step.from_expression-139"><span class="linenos">139</span></a>                        <span class="k">continue</span>
+</span><span id="Step.from_expression-140"><a href="#Step.from_expression-140"><span class="linenos">140</span></a>                    <span class="k">if</span> <span class="n">operand</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">operands</span><span class="p">:</span>
+</span><span id="Step.from_expression-141"><a href="#Step.from_expression-141"><span class="linenos">141</span></a>                        <span class="n">operands</span><span class="p">[</span><span class="n">operand</span><span class="p">]</span> <span class="o">=</span> <span class="n">next_operand_name</span><span class="p">()</span>
+</span><span id="Step.from_expression-142"><a href="#Step.from_expression-142"><span class="linenos">142</span></a>
+</span><span id="Step.from_expression-143"><a href="#Step.from_expression-143"><span class="linenos">143</span></a>                    <span class="n">operand</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">column</span><span class="p">(</span><span class="n">operands</span><span class="p">[</span><span class="n">operand</span><span class="p">],</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">))</span>
+</span><span id="Step.from_expression-144"><a href="#Step.from_expression-144"><span class="linenos">144</span></a>
+</span><span id="Step.from_expression-145"><a href="#Step.from_expression-145"><span class="linenos">145</span></a>            <span class="k">return</span> <span class="nb">bool</span><span class="p">(</span><span class="n">agg_funcs</span><span class="p">)</span>
+</span><span id="Step.from_expression-146"><a href="#Step.from_expression-146"><span class="linenos">146</span></a>
+</span><span id="Step.from_expression-147"><a href="#Step.from_expression-147"><span class="linenos">147</span></a>        <span class="k">def</span> <span class="nf">set_ops_and_aggs</span><span class="p">(</span><span class="n">step</span><span class="p">):</span>
+</span><span id="Step.from_expression-148"><a href="#Step.from_expression-148"><span class="linenos">148</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">operands</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">alias</span><span class="p">(</span><span class="n">operand</span><span class="p">,</span> <span class="n">alias_</span><span class="p">)</span> <span class="k">for</span> <span class="n">operand</span><span class="p">,</span> <span class="n">alias_</span> <span class="ow">in</span> <span class="n">operands</span><span class="o">.</span><span class="n">items</span><span class="p">())</span>
+</span><span id="Step.from_expression-149"><a href="#Step.from_expression-149"><span class="linenos">149</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">aggregations</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">aggregations</span><span class="p">)</span>
+</span><span id="Step.from_expression-150"><a href="#Step.from_expression-150"><span class="linenos">150</span></a>
+</span><span id="Step.from_expression-151"><a href="#Step.from_expression-151"><span class="linenos">151</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="Step.from_expression-152"><a href="#Step.from_expression-152"><span class="linenos">152</span></a>            <span class="k">if</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><span id="Step.from_expression-153"><a href="#Step.from_expression-153"><span class="linenos">153</span></a>                <span class="n">projections</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">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">step</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">))</span>
+</span><span id="Step.from_expression-154"><a href="#Step.from_expression-154"><span class="linenos">154</span></a>                <span class="n">extract_agg_operands</span><span class="p">(</span><span class="n">e</span><span class="p">)</span>
+</span><span id="Step.from_expression-155"><a href="#Step.from_expression-155"><span class="linenos">155</span></a>            <span class="k">else</span><span class="p">:</span>
+</span><span id="Step.from_expression-156"><a href="#Step.from_expression-156"><span class="linenos">156</span></a>                <span class="n">projections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">e</span><span class="p">)</span>
+</span><span id="Step.from_expression-157"><a href="#Step.from_expression-157"><span class="linenos">157</span></a>
+</span><span id="Step.from_expression-158"><a href="#Step.from_expression-158"><span class="linenos">158</span></a>        <span class="n">where</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">&quot;where&quot;</span><span class="p">)</span>
+</span><span id="Step.from_expression-159"><a href="#Step.from_expression-159"><span class="linenos">159</span></a>
+</span><span id="Step.from_expression-160"><a href="#Step.from_expression-160"><span class="linenos">160</span></a>        <span class="k">if</span> <span class="n">where</span><span class="p">:</span>
+</span><span id="Step.from_expression-161"><a href="#Step.from_expression-161"><span class="linenos">161</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">condition</span> <span class="o">=</span> <span class="n">where</span><span class="o">.</span><span class="n">this</span>
+</span><span id="Step.from_expression-162"><a href="#Step.from_expression-162"><span class="linenos">162</span></a>
+</span><span id="Step.from_expression-163"><a href="#Step.from_expression-163"><span class="linenos">163</span></a>        <span class="n">group</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">&quot;group&quot;</span><span class="p">)</span>
+</span><span id="Step.from_expression-164"><a href="#Step.from_expression-164"><span class="linenos">164</span></a>
+</span><span id="Step.from_expression-165"><a href="#Step.from_expression-165"><span class="linenos">165</span></a>        <span class="k">if</span> <span class="n">group</span> <span class="ow">or</span> <span class="n">aggregations</span><span class="p">:</span>
+</span><span id="Step.from_expression-166"><a href="#Step.from_expression-166"><span class="linenos">166</span></a>            <span class="n">aggregate</span> <span class="o">=</span> <span class="n">Aggregate</span><span class="p">()</span>
+</span><span id="Step.from_expression-167"><a href="#Step.from_expression-167"><span class="linenos">167</span></a>            <span class="n">aggregate</span><span class="o">.</span><span class="n">source</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
+</span><span id="Step.from_expression-168"><a href="#Step.from_expression-168"><span class="linenos">168</span></a>            <span class="n">aggregate</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
+</span><span id="Step.from_expression-169"><a href="#Step.from_expression-169"><span class="linenos">169</span></a>
+</span><span id="Step.from_expression-170"><a href="#Step.from_expression-170"><span class="linenos">170</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">&quot;having&quot;</span><span class="p">)</span>
+</span><span id="Step.from_expression-171"><a href="#Step.from_expression-171"><span class="linenos">171</span></a>
+</span><span id="Step.from_expression-172"><a href="#Step.from_expression-172"><span class="linenos">172</span></a>            <span class="k">if</span> <span class="n">having</span><span class="p">:</span>
+</span><span id="Step.from_expression-173"><a href="#Step.from_expression-173"><span class="linenos">173</span></a>                <span class="k">if</span> <span class="n">extract_agg_operands</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">having</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="s2">&quot;_h&quot;</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">)):</span>
+</span><span id="Step.from_expression-174"><a href="#Step.from_expression-174"><span class="linenos">174</span></a>                    <span class="n">aggregate</span><span class="o">.</span><span class="n">condition</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="s2">&quot;_h&quot;</span><span class="p">,</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span>
+</span><span id="Step.from_expression-175"><a href="#Step.from_expression-175"><span class="linenos">175</span></a>                <span class="k">else</span><span class="p">:</span>
+</span><span id="Step.from_expression-176"><a href="#Step.from_expression-176"><span class="linenos">176</span></a>                    <span class="n">aggregate</span><span class="o">.</span><span class="n">condition</span> <span class="o">=</span> <span class="n">having</span><span class="o">.</span><span class="n">this</span>
+</span><span id="Step.from_expression-177"><a href="#Step.from_expression-177"><span class="linenos">177</span></a>
+</span><span id="Step.from_expression-178"><a href="#Step.from_expression-178"><span class="linenos">178</span></a>            <span class="n">set_ops_and_aggs</span><span class="p">(</span><span class="n">aggregate</span><span class="p">)</span>
+</span><span id="Step.from_expression-179"><a href="#Step.from_expression-179"><span class="linenos">179</span></a>
+</span><span id="Step.from_expression-180"><a href="#Step.from_expression-180"><span class="linenos">180</span></a>            <span class="c1"># give aggregates names and replace projections with references to them</span>
+</span><span id="Step.from_expression-181"><a href="#Step.from_expression-181"><span class="linenos">181</span></a>            <span class="n">aggregate</span><span class="o">.</span><span class="n">group</span> <span class="o">=</span> <span class="p">{</span>
+</span><span id="Step.from_expression-182"><a href="#Step.from_expression-182"><span class="linenos">182</span></a>                <span class="sa">f</span><span class="s2">&quot;_g</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">:</span> <span class="n">e</span> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">e</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">group</span><span class="o">.</span><span class="n">expressions</span> <span class="k">if</span> <span class="n">group</span> <span class="k">else</span> <span class="p">[])</span>
+</span><span id="Step.from_expression-183"><a href="#Step.from_expression-183"><span class="linenos">183</span></a>            <span class="p">}</span>
+</span><span id="Step.from_expression-184"><a href="#Step.from_expression-184"><span class="linenos">184</span></a>
+</span><span id="Step.from_expression-185"><a href="#Step.from_expression-185"><span class="linenos">185</span></a>            <span class="n">intermediate</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">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 class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="p">{}</span>
+</span><span id="Step.from_expression-186"><a href="#Step.from_expression-186"><span class="linenos">186</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">aggregate</span><span class="o">.</span><span class="n">group</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
+</span><span id="Step.from_expression-187"><a href="#Step.from_expression-187"><span class="linenos">187</span></a>                <span class="n">intermediate</span><span class="p">[</span><span class="n">v</span><span class="p">]</span> <span class="o">=</span> <span class="n">k</span>
+</span><span id="Step.from_expression-188"><a href="#Step.from_expression-188"><span class="linenos">188</span></a>                <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">v</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="Step.from_expression-189"><a href="#Step.from_expression-189"><span class="linenos">189</span></a>                    <span class="n">intermediate</span><span class="p">[</span><span class="n">v</span><span class="o">.</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">k</span>
+</span><span id="Step.from_expression-190"><a href="#Step.from_expression-190"><span class="linenos">190</span></a>
+</span><span id="Step.from_expression-191"><a href="#Step.from_expression-191"><span class="linenos">191</span></a>            <span class="k">for</span> <span class="n">projection</span> <span class="ow">in</span> <span class="n">projections</span><span class="p">:</span>
+</span><span id="Step.from_expression-192"><a href="#Step.from_expression-192"><span class="linenos">192</span></a>                <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">projection</span><span class="o">.</span><span class="n">walk</span><span class="p">():</span>
+</span><span id="Step.from_expression-193"><a href="#Step.from_expression-193"><span class="linenos">193</span></a>                    <span class="n">name</span> <span class="o">=</span> <span class="n">intermediate</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">node</span><span class="p">)</span>
+</span><span id="Step.from_expression-194"><a href="#Step.from_expression-194"><span class="linenos">194</span></a>                    <span class="k">if</span> <span class="n">name</span><span class="p">:</span>
+</span><span id="Step.from_expression-195"><a href="#Step.from_expression-195"><span class="linenos">195</span></a>                        <span class="n">node</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">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">))</span>
+</span><span id="Step.from_expression-196"><a href="#Step.from_expression-196"><span class="linenos">196</span></a>
+</span><span id="Step.from_expression-197"><a href="#Step.from_expression-197"><span class="linenos">197</span></a>            <span class="k">if</span> <span class="n">aggregate</span><span class="o">.</span><span class="n">condition</span><span class="p">:</span>
+</span><span id="Step.from_expression-198"><a href="#Step.from_expression-198"><span class="linenos">198</span></a>                <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">aggregate</span><span class="o">.</span><span class="n">condition</span><span class="o">.</span><span class="n">walk</span><span class="p">():</span>
+</span><span id="Step.from_expression-199"><a href="#Step.from_expression-199"><span class="linenos">199</span></a>                    <span class="n">name</span> <span class="o">=</span> <span class="n">intermediate</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> <span class="ow">or</span> <span class="n">intermediate</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="Step.from_expression-200"><a href="#Step.from_expression-200"><span class="linenos">200</span></a>                    <span class="k">if</span> <span class="n">name</span><span class="p">:</span>
+</span><span id="Step.from_expression-201"><a href="#Step.from_expression-201"><span class="linenos">201</span></a>                        <span class="n">node</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">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">))</span>
+</span><span id="Step.from_expression-202"><a href="#Step.from_expression-202"><span class="linenos">202</span></a>
+</span><span id="Step.from_expression-203"><a href="#Step.from_expression-203"><span class="linenos">203</span></a>            <span class="n">aggregate</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">step</span><span class="p">)</span>
+</span><span id="Step.from_expression-204"><a href="#Step.from_expression-204"><span class="linenos">204</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">aggregate</span>
+</span><span id="Step.from_expression-205"><a href="#Step.from_expression-205"><span class="linenos">205</span></a>
+</span><span id="Step.from_expression-206"><a href="#Step.from_expression-206"><span class="linenos">206</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">&quot;order&quot;</span><span class="p">)</span>
+</span><span id="Step.from_expression-207"><a href="#Step.from_expression-207"><span class="linenos">207</span></a>
+</span><span id="Step.from_expression-208"><a href="#Step.from_expression-208"><span class="linenos">208</span></a>        <span class="k">if</span> <span class="n">order</span><span class="p">:</span>
+</span><span id="Step.from_expression-209"><a href="#Step.from_expression-209"><span class="linenos">209</span></a>            <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">step</span><span class="p">,</span> <span class="n">Aggregate</span><span class="p">):</span>
+</span><span id="Step.from_expression-210"><a href="#Step.from_expression-210"><span class="linenos">210</span></a>                <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">ordered</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">order</span><span class="o">.</span><span class="n">expressions</span><span class="p">):</span>
+</span><span id="Step.from_expression-211"><a href="#Step.from_expression-211"><span class="linenos">211</span></a>                    <span class="k">if</span> <span class="n">extract_agg_operands</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">ordered</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="sa">f</span><span class="s2">&quot;_o_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">)):</span>
+</span><span id="Step.from_expression-212"><a href="#Step.from_expression-212"><span class="linenos">212</span></a>                        <span class="n">ordered</span><span class="o">.</span><span class="n">this</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">column</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;_o_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">,</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">quoted</span><span class="o">=</span><span class="kc">True</span><span class="p">))</span>
+</span><span id="Step.from_expression-213"><a href="#Step.from_expression-213"><span class="linenos">213</span></a>
+</span><span id="Step.from_expression-214"><a href="#Step.from_expression-214"><span class="linenos">214</span></a>                <span class="n">set_ops_and_aggs</span><span class="p">(</span><span class="n">aggregate</span><span class="p">)</span>
+</span><span id="Step.from_expression-215"><a href="#Step.from_expression-215"><span class="linenos">215</span></a>
+</span><span id="Step.from_expression-216"><a href="#Step.from_expression-216"><span class="linenos">216</span></a>            <span class="n">sort</span> <span class="o">=</span> <span class="n">Sort</span><span class="p">()</span>
+</span><span id="Step.from_expression-217"><a href="#Step.from_expression-217"><span class="linenos">217</span></a>            <span class="n">sort</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
+</span><span id="Step.from_expression-218"><a href="#Step.from_expression-218"><span class="linenos">218</span></a>            <span class="n">sort</span><span class="o">.</span><span class="n">key</span> <span class="o">=</span> <span class="n">order</span><span class="o">.</span><span class="n">expressions</span>
+</span><span id="Step.from_expression-219"><a href="#Step.from_expression-219"><span class="linenos">219</span></a>            <span class="n">sort</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">step</span><span class="p">)</span>
+</span><span id="Step.from_expression-220"><a href="#Step.from_expression-220"><span class="linenos">220</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">sort</span>
+</span><span id="Step.from_expression-221"><a href="#Step.from_expression-221"><span class="linenos">221</span></a>
+</span><span id="Step.from_expression-222"><a href="#Step.from_expression-222"><span class="linenos">222</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">projections</span> <span class="o">=</span> <span class="n">projections</span>
+</span><span id="Step.from_expression-223"><a href="#Step.from_expression-223"><span class="linenos">223</span></a>
+</span><span id="Step.from_expression-224"><a href="#Step.from_expression-224"><span class="linenos">224</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">Select</span><span class="p">)</span> <span class="ow">and</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">&quot;distinct&quot;</span><span class="p">):</span>
+</span><span id="Step.from_expression-225"><a href="#Step.from_expression-225"><span class="linenos">225</span></a>            <span class="n">distinct</span> <span class="o">=</span> <span class="n">Aggregate</span><span class="p">()</span>
+</span><span id="Step.from_expression-226"><a href="#Step.from_expression-226"><span class="linenos">226</span></a>            <span class="n">distinct</span><span class="o">.</span><span class="n">source</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
+</span><span id="Step.from_expression-227"><a href="#Step.from_expression-227"><span class="linenos">227</span></a>            <span class="n">distinct</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">step</span><span class="o">.</span><span class="n">name</span>
+</span><span id="Step.from_expression-228"><a href="#Step.from_expression-228"><span class="linenos">228</span></a>            <span class="n">distinct</span><span class="o">.</span><span class="n">group</span> <span class="o">=</span> <span class="p">{</span>
+</span><span id="Step.from_expression-229"><a href="#Step.from_expression-229"><span class="linenos">229</span></a>                <span class="n">e</span><span class="o">.</span><span class="n">alias_or_name</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">col</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 class="n">table</span><span class="o">=</span><span class="n">step</span><span class="o">.</span><span class="n">name</span><span class="p">)</span>
+</span><span id="Step.from_expression-230"><a href="#Step.from_expression-230"><span class="linenos">230</span></a>                <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">projections</span> <span class="ow">or</span> <span class="n">expression</span><span class="o">.</span><span class="n">expressions</span>
+</span><span id="Step.from_expression-231"><a href="#Step.from_expression-231"><span class="linenos">231</span></a>            <span class="p">}</span>
+</span><span id="Step.from_expression-232"><a href="#Step.from_expression-232"><span class="linenos">232</span></a>            <span class="n">distinct</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">step</span><span class="p">)</span>
+</span><span id="Step.from_expression-233"><a href="#Step.from_expression-233"><span class="linenos">233</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">distinct</span>
+</span><span id="Step.from_expression-234"><a href="#Step.from_expression-234"><span class="linenos">234</span></a>
+</span><span id="Step.from_expression-235"><a href="#Step.from_expression-235"><span class="linenos">235</span></a>        <span class="n">limit</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">&quot;limit&quot;</span><span class="p">)</span>
+</span><span id="Step.from_expression-236"><a href="#Step.from_expression-236"><span class="linenos">236</span></a>
+</span><span id="Step.from_expression-237"><a href="#Step.from_expression-237"><span class="linenos">237</span></a>        <span class="k">if</span> <span class="n">limit</span><span class="p">:</span>
+</span><span id="Step.from_expression-238"><a href="#Step.from_expression-238"><span class="linenos">238</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">limit</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">limit</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="s2">&quot;expression&quot;</span><span class="p">))</span>
+</span><span id="Step.from_expression-239"><a href="#Step.from_expression-239"><span class="linenos">239</span></a>
+</span><span id="Step.from_expression-240"><a href="#Step.from_expression-240"><span class="linenos">240</span></a>        <span class="k">return</span> <span class="n">step</span>
 </span></pre></div>
 
 
@@ -1412,9 +1419,9 @@ Projections:</li>
 
     </div>
     <a class="headerlink" href="#Step.add_dependency"></a>
-            <div class="pdoc-code codehilite"><pre><span></span><span id="Step.add_dependency-249"><a href="#Step.add_dependency-249"><span class="linenos">249</span></a>    <span class="k">def</span> <span class="nf">add_dependency</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">dependency</span><span class="p">:</span> <span class="n">Step</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
-</span><span id="Step.add_dependency-250"><a href="#Step.add_dependency-250"><span class="linenos">250</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">dependencies</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">dependency</span><span class="p">)</span>
-</span><span id="Step.add_dependency-251"><a href="#Step.add_dependency-251"><span class="linenos">251</span></a>        <span class="n">dependency</span><span class="o">.</span><span class="n">dependents</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span>
+            <div class="pdoc-code codehilite"><pre><span></span><span id="Step.add_dependency-250"><a href="#Step.add_dependency-250"><span class="linenos">250</span></a>    <span class="k">def</span> <span class="nf">add_dependency</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">dependency</span><span class="p">:</span> <span class="n">Step</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
+</span><span id="Step.add_dependency-251"><a href="#Step.add_dependency-251"><span class="linenos">251</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">dependencies</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">dependency</span><span class="p">)</span>
+</span><span id="Step.add_dependency-252"><a href="#Step.add_dependency-252"><span class="linenos">252</span></a>        <span class="n">dependency</span><span class="o">.</span><span class="n">dependents</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span>
 </span></pre></div>
 
 
@@ -1432,36 +1439,36 @@ Projections:</li>
 
     </div>
     <a class="headerlink" href="#Step.to_s"></a>
-            <div class="pdoc-code codehilite"><pre><span></span><span id="Step.to_s-256"><a href="#Step.to_s-256"><span class="linenos">256</span></a>    <span class="k">def</span> <span class="nf">to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">level</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">0</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
-</span><span id="Step.to_s-257"><a href="#Step.to_s-257"><span class="linenos">257</span></a>        <span class="n">indent</span> <span class="o">=</span> <span class="s2">&quot;  &quot;</span> <span class="o">*</span> <span class="n">level</span>
-</span><span id="Step.to_s-258"><a href="#Step.to_s-258"><span class="linenos">258</span></a>        <span class="n">nested</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">    &quot;</span>
-</span><span id="Step.to_s-259"><a href="#Step.to_s-259"><span class="linenos">259</span></a>
-</span><span id="Step.to_s-260"><a href="#Step.to_s-260"><span class="linenos">260</span></a>        <span class="n">context</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_to_s</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">  &quot;</span><span class="p">)</span>
-</span><span id="Step.to_s-261"><a href="#Step.to_s-261"><span class="linenos">261</span></a>
-</span><span id="Step.to_s-262"><a href="#Step.to_s-262"><span class="linenos">262</span></a>        <span class="k">if</span> <span class="n">context</span><span class="p">:</span>
-</span><span id="Step.to_s-263"><a href="#Step.to_s-263"><span class="linenos">263</span></a>            <span class="n">context</span> <span class="o">=</span> <span class="p">[</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Context:&quot;</span><span class="p">]</span> <span class="o">+</span> <span class="n">context</span>
-</span><span id="Step.to_s-264"><a href="#Step.to_s-264"><span class="linenos">264</span></a>
-</span><span id="Step.to_s-265"><a href="#Step.to_s-265"><span class="linenos">265</span></a>        <span class="n">lines</span> <span class="o">=</span> <span class="p">[</span>
-</span><span id="Step.to_s-266"><a href="#Step.to_s-266"><span class="linenos">266</span></a>            <span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">- </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">id</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">,</span>
-</span><span id="Step.to_s-267"><a href="#Step.to_s-267"><span class="linenos">267</span></a>            <span class="o">*</span><span class="n">context</span><span class="p">,</span>
-</span><span id="Step.to_s-268"><a href="#Step.to_s-268"><span class="linenos">268</span></a>            <span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Projections:&quot;</span><span class="p">,</span>
-</span><span id="Step.to_s-269"><a href="#Step.to_s-269"><span class="linenos">269</span></a>        <span class="p">]</span>
-</span><span id="Step.to_s-270"><a href="#Step.to_s-270"><span class="linenos">270</span></a>
-</span><span id="Step.to_s-271"><a href="#Step.to_s-271"><span class="linenos">271</span></a>        <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">projections</span><span class="p">:</span>
-</span><span id="Step.to_s-272"><a href="#Step.to_s-272"><span class="linenos">272</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="n">expression</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
-</span><span id="Step.to_s-273"><a href="#Step.to_s-273"><span class="linenos">273</span></a>
-</span><span id="Step.to_s-274"><a href="#Step.to_s-274"><span class="linenos">274</span></a>        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">condition</span><span class="p">:</span>
-</span><span id="Step.to_s-275"><a href="#Step.to_s-275"><span class="linenos">275</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Condition: </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">condition</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
-</span><span id="Step.to_s-276"><a href="#Step.to_s-276"><span class="linenos">276</span></a>
-</span><span id="Step.to_s-277"><a href="#Step.to_s-277"><span class="linenos">277</span></a>        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">limit</span> <span class="ow">is</span> <span class="ow">not</span> <span class="n">math</span><span class="o">.</span><span class="n">inf</span><span class="p">:</span>
-</span><span id="Step.to_s-278"><a href="#Step.to_s-278"><span class="linenos">278</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Limit: </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">limit</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
-</span><span id="Step.to_s-279"><a href="#Step.to_s-279"><span class="linenos">279</span></a>
-</span><span id="Step.to_s-280"><a href="#Step.to_s-280"><span class="linenos">280</span></a>        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">dependencies</span><span class="p">:</span>
-</span><span id="Step.to_s-281"><a href="#Step.to_s-281"><span class="linenos">281</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Dependencies:&quot;</span><span class="p">)</span>
-</span><span id="Step.to_s-282"><a href="#Step.to_s-282"><span class="linenos">282</span></a>            <span class="k">for</span> <span class="n">dependency</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">dependencies</span><span class="p">:</span>
-</span><span id="Step.to_s-283"><a href="#Step.to_s-283"><span class="linenos">283</span></a>                <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s2">&quot;  &quot;</span> <span class="o">+</span> <span class="n">dependency</span><span class="o">.</span><span class="n">to_s</span><span class="p">(</span><span class="n">level</span> <span class="o">+</span> <span class="mi">1</span><span class="p">))</span>
-</span><span id="Step.to_s-284"><a href="#Step.to_s-284"><span class="linenos">284</span></a>
-</span><span id="Step.to_s-285"><a href="#Step.to_s-285"><span class="linenos">285</span></a>        <span class="k">return</span> <span class="s2">&quot;</span><span class="se">\n</span><span class="s2">&quot;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">lines</span><span class="p">)</span>
+            <div class="pdoc-code codehilite"><pre><span></span><span id="Step.to_s-257"><a href="#Step.to_s-257"><span class="linenos">257</span></a>    <span class="k">def</span> <span class="nf">to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">level</span><span class="p">:</span> <span class="nb">int</span> <span class="o">=</span> <span class="mi">0</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
+</span><span id="Step.to_s-258"><a href="#Step.to_s-258"><span class="linenos">258</span></a>        <span class="n">indent</span> <span class="o">=</span> <span class="s2">&quot;  &quot;</span> <span class="o">*</span> <span class="n">level</span>
+</span><span id="Step.to_s-259"><a href="#Step.to_s-259"><span class="linenos">259</span></a>        <span class="n">nested</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">    &quot;</span>
+</span><span id="Step.to_s-260"><a href="#Step.to_s-260"><span class="linenos">260</span></a>
+</span><span id="Step.to_s-261"><a href="#Step.to_s-261"><span class="linenos">261</span></a>        <span class="n">context</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_to_s</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">  &quot;</span><span class="p">)</span>
+</span><span id="Step.to_s-262"><a href="#Step.to_s-262"><span class="linenos">262</span></a>
+</span><span id="Step.to_s-263"><a href="#Step.to_s-263"><span class="linenos">263</span></a>        <span class="k">if</span> <span class="n">context</span><span class="p">:</span>
+</span><span id="Step.to_s-264"><a href="#Step.to_s-264"><span class="linenos">264</span></a>            <span class="n">context</span> <span class="o">=</span> <span class="p">[</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Context:&quot;</span><span class="p">]</span> <span class="o">+</span> <span class="n">context</span>
+</span><span id="Step.to_s-265"><a href="#Step.to_s-265"><span class="linenos">265</span></a>
+</span><span id="Step.to_s-266"><a href="#Step.to_s-266"><span class="linenos">266</span></a>        <span class="n">lines</span> <span class="o">=</span> <span class="p">[</span>
+</span><span id="Step.to_s-267"><a href="#Step.to_s-267"><span class="linenos">267</span></a>            <span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">- </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">id</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">,</span>
+</span><span id="Step.to_s-268"><a href="#Step.to_s-268"><span class="linenos">268</span></a>            <span class="o">*</span><span class="n">context</span><span class="p">,</span>
+</span><span id="Step.to_s-269"><a href="#Step.to_s-269"><span class="linenos">269</span></a>            <span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Projections:&quot;</span><span class="p">,</span>
+</span><span id="Step.to_s-270"><a href="#Step.to_s-270"><span class="linenos">270</span></a>        <span class="p">]</span>
+</span><span id="Step.to_s-271"><a href="#Step.to_s-271"><span class="linenos">271</span></a>
+</span><span id="Step.to_s-272"><a href="#Step.to_s-272"><span class="linenos">272</span></a>        <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">projections</span><span class="p">:</span>
+</span><span id="Step.to_s-273"><a href="#Step.to_s-273"><span class="linenos">273</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="n">expression</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
+</span><span id="Step.to_s-274"><a href="#Step.to_s-274"><span class="linenos">274</span></a>
+</span><span id="Step.to_s-275"><a href="#Step.to_s-275"><span class="linenos">275</span></a>        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">condition</span><span class="p">:</span>
+</span><span id="Step.to_s-276"><a href="#Step.to_s-276"><span class="linenos">276</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Condition: </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">condition</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
+</span><span id="Step.to_s-277"><a href="#Step.to_s-277"><span class="linenos">277</span></a>
+</span><span id="Step.to_s-278"><a href="#Step.to_s-278"><span class="linenos">278</span></a>        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">limit</span> <span class="ow">is</span> <span class="ow">not</span> <span class="n">math</span><span class="o">.</span><span class="n">inf</span><span class="p">:</span>
+</span><span id="Step.to_s-279"><a href="#Step.to_s-279"><span class="linenos">279</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Limit: </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">limit</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
+</span><span id="Step.to_s-280"><a href="#Step.to_s-280"><span class="linenos">280</span></a>
+</span><span id="Step.to_s-281"><a href="#Step.to_s-281"><span class="linenos">281</span></a>        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">dependencies</span><span class="p">:</span>
+</span><span id="Step.to_s-282"><a href="#Step.to_s-282"><span class="linenos">282</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">nested</span><span class="si">}</span><span class="s2">Dependencies:&quot;</span><span class="p">)</span>
+</span><span id="Step.to_s-283"><a href="#Step.to_s-283"><span class="linenos">283</span></a>            <span class="k">for</span> <span class="n">dependency</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">dependencies</span><span class="p">:</span>
+</span><span id="Step.to_s-284"><a href="#Step.to_s-284"><span class="linenos">284</span></a>                <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s2">&quot;  &quot;</span> <span class="o">+</span> <span class="n">dependency</span><span class="o">.</span><span class="n">to_s</span><span class="p">(</span><span class="n">level</span> <span class="o">+</span> <span class="mi">1</span><span class="p">))</span>
+</span><span id="Step.to_s-285"><a href="#Step.to_s-285"><span class="linenos">285</span></a>
+</span><span id="Step.to_s-286"><a href="#Step.to_s-286"><span class="linenos">286</span></a>        <span class="k">return</span> <span class="s2">&quot;</span><span class="se">\n</span><span class="s2">&quot;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">lines</span><span class="p">)</span>
 </span></pre></div>
 
 
@@ -1477,9 +1484,9 @@ Projections:</li>
 
     </div>
     <a class="headerlink" href="#Step.type_name"></a>
-            <div class="pdoc-code codehilite"><pre><span></span><span id="Step.type_name-287"><a href="#Step.type_name-287"><span class="linenos">287</span></a>    <span class="nd">@property</span>
-</span><span id="Step.type_name-288"><a href="#Step.type_name-288"><span class="linenos">288</span></a>    <span class="k">def</span> <span class="nf">type_name</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
-</span><span id="Step.type_name-289"><a href="#Step.type_name-289"><span class="linenos">289</span></a>        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="vm">__class__</span><span class="o">.</span><span class="vm">__name__</span>
+            <div class="pdoc-code codehilite"><pre><span></span><span id="Step.type_name-288"><a href="#Step.type_name-288"><span class="linenos">288</span></a>    <span class="nd">@property</span>
+</span><span id="Step.type_name-289"><a href="#Step.type_name-289"><span class="linenos">289</span></a>    <span class="k">def</span> <span class="nf">type_name</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
+</span><span id="Step.type_name-290"><a href="#Step.type_name-290"><span class="linenos">290</span></a>        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="vm">__class__</span><span class="o">.</span><span class="vm">__name__</span>
 </span></pre></div>
 
 
@@ -1495,11 +1502,11 @@ Projections:</li>
 
     </div>
     <a class="headerlink" href="#Step.id"></a>
-            <div class="pdoc-code codehilite"><pre><span></span><span id="Step.id-291"><a href="#Step.id-291"><span class="linenos">291</span></a>    <span class="nd">@property</span>
-</span><span id="Step.id-292"><a href="#Step.id-292"><span class="linenos">292</span></a>    <span class="k">def</span> <span class="nf">id</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
-</span><span id="Step.id-293"><a href="#Step.id-293"><span class="linenos">293</span></a>        <span class="n">name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">name</span>
-</span><span id="Step.id-294"><a href="#Step.id-294"><span class="linenos">294</span></a>        <span class="n">name</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">&quot; </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">&quot;</span> <span class="k">if</span> <span class="n">name</span> <span class="k">else</span> <span class="s2">&quot;&quot;</span>
-</span><span id="Step.id-295"><a href="#Step.id-295"><span class="linenos">295</span></a>        <span class="k">return</span> <span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">type_name</span><span class="si">}</span><span class="s2">:</span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2"> (</span><span class="si">{</span><span class="nb">id</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span><span class="si">}</span><span class="s2">)&quot;</span>
+            <div class="pdoc-code codehilite"><pre><span></span><span id="Step.id-292"><a href="#Step.id-292"><span class="linenos">292</span></a>    <span class="nd">@property</span>
+</span><span id="Step.id-293"><a href="#Step.id-293"><span class="linenos">293</span></a>    <span class="k">def</span> <span class="nf">id</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
+</span><span id="Step.id-294"><a href="#Step.id-294"><span class="linenos">294</span></a>        <span class="n">name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">name</span>
+</span><span id="Step.id-295"><a href="#Step.id-295"><span class="linenos">295</span></a>        <span class="n">name</span> <span class="o">=</span> <span class="sa">f</span><span class="s2">&quot; </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">&quot;</span> <span class="k">if</span> <span class="n">name</span> <span class="k">else</span> <span class="s2">&quot;&quot;</span>
+</span><span id="Step.id-296"><a href="#Step.id-296"><span class="linenos">296</span></a>        <span class="k">return</span> <span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">type_name</span><span class="si">}</span><span class="s2">:</span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2"> (</span><span class="si">{</span><span class="nb">id</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span><span class="si">}</span><span class="s2">)&quot;</span>
 </span></pre></div>
 
 
@@ -1518,34 +1525,34 @@ Projections:</li>
 
     </div>
     <a class="headerlink" href="#Scan"></a>
-            <div class="pdoc-code codehilite"><pre><span></span><span id="Scan-301"><a href="#Scan-301"><span class="linenos">301</span></a><span class="k">class</span> <span class="nc">Scan</span><span class="p">(</span><span class="n">Step</span><span class="p">):</span>
-</span><span id="Scan-302"><a href="#Scan-302"><span class="linenos">302</span></a>    <span class="nd">@classmethod</span>
-</span><span id="Scan-303"><a href="#Scan-303"><span class="linenos">303</span></a>    <span class="k">def</span> <span class="nf">from_expression</span><span class="p">(</span>
-</span><span id="Scan-304"><a href="#Scan-304"><span class="linenos">304</span></a>        <span class="bp">cls</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">ctes</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="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Step</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span>
-</span><span id="Scan-305"><a href="#Scan-305"><span class="linenos">305</span></a>    <span class="p">)</span> <span class="o">-&gt;</span> <span class="n">Step</span><span class="p">:</span>
-</span><span id="Scan-306"><a href="#Scan-306"><span class="linenos">306</span></a>        <span class="n">table</span> <span class="o">=</span> <span class="n">expression</span>
-</span><span id="Scan-307"><a href="#Scan-307"><span class="linenos">307</span></a>        <span class="n">alias_</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">alias_or_name</span>
-</span><span id="Scan-308"><a href="#Scan-308"><span class="linenos">308</span></a>
-</span><span id="Scan-309"><a href="#Scan-309"><span class="linenos">309</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="Scan-310"><a href="#Scan-310"><span class="linenos">310</span></a>            <span class="n">table</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span>
-</span><span id="Scan-311"><a href="#Scan-311"><span class="linenos">311</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">Step</span><span class="o">.</span><span class="n">from_expression</span><span class="p">(</span><span class="n">table</span><span class="p">,</span> <span class="n">ctes</span><span class="p">)</span>
-</span><span id="Scan-312"><a href="#Scan-312"><span class="linenos">312</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">alias_</span>
-</span><span id="Scan-313"><a href="#Scan-313"><span class="linenos">313</span></a>            <span class="k">return</span> <span class="n">step</span>
-</span><span id="Scan-314"><a href="#Scan-314"><span class="linenos">314</span></a>
-</span><span id="Scan-315"><a href="#Scan-315"><span class="linenos">315</span></a>        <span class="n">step</span> <span class="o">=</span> <span class="n">Scan</span><span class="p">()</span>
-</span><span id="Scan-316"><a href="#Scan-316"><span class="linenos">316</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">alias_</span>
-</span><span id="Scan-317"><a href="#Scan-317"><span class="linenos">317</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">source</span> <span class="o">=</span> <span class="n">expression</span>
-</span><span id="Scan-318"><a href="#Scan-318"><span class="linenos">318</span></a>        <span class="k">if</span> <span class="n">ctes</span> <span class="ow">and</span> <span class="n">table</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">ctes</span><span class="p">:</span>
-</span><span id="Scan-319"><a href="#Scan-319"><span class="linenos">319</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">ctes</span><span class="p">[</span><span class="n">table</span><span class="o">.</span><span class="n">name</span><span class="p">])</span>
-</span><span id="Scan-320"><a href="#Scan-320"><span class="linenos">320</span></a>
-</span><span id="Scan-321"><a href="#Scan-321"><span class="linenos">321</span></a>        <span class="k">return</span> <span class="n">step</span>
-</span><span id="Scan-322"><a href="#Scan-322"><span class="linenos">322</span></a>
-</span><span id="Scan-323"><a href="#Scan-323"><span class="linenos">323</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="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
-</span><span id="Scan-324"><a href="#Scan-324"><span class="linenos">324</span></a>        <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>
-</span><span id="Scan-325"><a href="#Scan-325"><span class="linenos">325</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">source</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="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>
-</span><span id="Scan-326"><a href="#Scan-326"><span class="linenos">326</span></a>
-</span><span id="Scan-327"><a href="#Scan-327"><span class="linenos">327</span></a>    <span class="k">def</span> <span class="nf">_to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">indent</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
-</span><span id="Scan-328"><a href="#Scan-328"><span class="linenos">328</span></a>        <span class="k">return</span> <span class="p">[</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Source: </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">source</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="bp">self</span><span class="o">.</span><span class="n">source</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="s1">&#39;-static-&#39;</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">]</span>  <span class="c1"># type: ignore</span>
+            <div class="pdoc-code codehilite"><pre><span></span><span id="Scan-302"><a href="#Scan-302"><span class="linenos">302</span></a><span class="k">class</span> <span class="nc">Scan</span><span class="p">(</span><span class="n">Step</span><span class="p">):</span>
+</span><span id="Scan-303"><a href="#Scan-303"><span class="linenos">303</span></a>    <span class="nd">@classmethod</span>
+</span><span id="Scan-304"><a href="#Scan-304"><span class="linenos">304</span></a>    <span class="k">def</span> <span class="nf">from_expression</span><span class="p">(</span>
+</span><span id="Scan-305"><a href="#Scan-305"><span class="linenos">305</span></a>        <span class="bp">cls</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">ctes</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="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Step</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span>
+</span><span id="Scan-306"><a href="#Scan-306"><span class="linenos">306</span></a>    <span class="p">)</span> <span class="o">-&gt;</span> <span class="n">Step</span><span class="p">:</span>
+</span><span id="Scan-307"><a href="#Scan-307"><span class="linenos">307</span></a>        <span class="n">table</span> <span class="o">=</span> <span class="n">expression</span>
+</span><span id="Scan-308"><a href="#Scan-308"><span class="linenos">308</span></a>        <span class="n">alias_</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">alias_or_name</span>
+</span><span id="Scan-309"><a href="#Scan-309"><span class="linenos">309</span></a>
+</span><span id="Scan-310"><a href="#Scan-310"><span class="linenos">310</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="Scan-311"><a href="#Scan-311"><span class="linenos">311</span></a>            <span class="n">table</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span>
+</span><span id="Scan-312"><a href="#Scan-312"><span class="linenos">312</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">Step</span><span class="o">.</span><span class="n">from_expression</span><span class="p">(</span><span class="n">table</span><span class="p">,</span> <span class="n">ctes</span><span class="p">)</span>
+</span><span id="Scan-313"><a href="#Scan-313"><span class="linenos">313</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">alias_</span>
+</span><span id="Scan-314"><a href="#Scan-314"><span class="linenos">314</span></a>            <span class="k">return</span> <span class="n">step</span>
+</span><span id="Scan-315"><a href="#Scan-315"><span class="linenos">315</span></a>
+</span><span id="Scan-316"><a href="#Scan-316"><span class="linenos">316</span></a>        <span class="n">step</span> <span class="o">=</span> <span class="n">Scan</span><span class="p">()</span>
+</span><span id="Scan-317"><a href="#Scan-317"><span class="linenos">317</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">alias_</span>
+</span><span id="Scan-318"><a href="#Scan-318"><span class="linenos">318</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">source</span> <span class="o">=</span> <span class="n">expression</span>
+</span><span id="Scan-319"><a href="#Scan-319"><span class="linenos">319</span></a>        <span class="k">if</span> <span class="n">ctes</span> <span class="ow">and</span> <span class="n">table</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">ctes</span><span class="p">:</span>
+</span><span id="Scan-320"><a href="#Scan-320"><span class="linenos">320</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">ctes</span><span class="p">[</span><span class="n">table</span><span class="o">.</span><span class="n">name</span><span class="p">])</span>
+</span><span id="Scan-321"><a href="#Scan-321"><span class="linenos">321</span></a>
+</span><span id="Scan-322"><a href="#Scan-322"><span class="linenos">322</span></a>        <span class="k">return</span> <span class="n">step</span>
+</span><span id="Scan-323"><a href="#Scan-323"><span class="linenos">323</span></a>
+</span><span id="Scan-324"><a href="#Scan-324"><span class="linenos">324</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="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
+</span><span id="Scan-325"><a href="#Scan-325"><span class="linenos">325</span></a>        <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>
+</span><span id="Scan-326"><a href="#Scan-326"><span class="linenos">326</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">source</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="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>
+</span><span id="Scan-327"><a href="#Scan-327"><span class="linenos">327</span></a>
+</span><span id="Scan-328"><a href="#Scan-328"><span class="linenos">328</span></a>    <span class="k">def</span> <span class="nf">_to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">indent</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
+</span><span id="Scan-329"><a href="#Scan-329"><span class="linenos">329</span></a>        <span class="k">return</span> <span class="p">[</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Source: </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">source</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="bp">self</span><span class="o">.</span><span class="n">source</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="s1">&#39;-static-&#39;</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">]</span>  <span class="c1"># type: ignore</span>
 </span></pre></div>
 
 
@@ -1563,26 +1570,26 @@ Projections:</li>
 
     </div>
     <a class="headerlink" href="#Scan.from_expression"></a>
-            <div class="pdoc-code codehilite"><pre><span></span><span id="Scan.from_expression-302"><a href="#Scan.from_expression-302"><span class="linenos">302</span></a>    <span class="nd">@classmethod</span>
-</span><span id="Scan.from_expression-303"><a href="#Scan.from_expression-303"><span class="linenos">303</span></a>    <span class="k">def</span> <span class="nf">from_expression</span><span class="p">(</span>
-</span><span id="Scan.from_expression-304"><a href="#Scan.from_expression-304"><span class="linenos">304</span></a>        <span class="bp">cls</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">ctes</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="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Step</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span>
-</span><span id="Scan.from_expression-305"><a href="#Scan.from_expression-305"><span class="linenos">305</span></a>    <span class="p">)</span> <span class="o">-&gt;</span> <span class="n">Step</span><span class="p">:</span>
-</span><span id="Scan.from_expression-306"><a href="#Scan.from_expression-306"><span class="linenos">306</span></a>        <span class="n">table</span> <span class="o">=</span> <span class="n">expression</span>
-</span><span id="Scan.from_expression-307"><a href="#Scan.from_expression-307"><span class="linenos">307</span></a>        <span class="n">alias_</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">alias_or_name</span>
-</span><span id="Scan.from_expression-308"><a href="#Scan.from_expression-308"><span class="linenos">308</span></a>
-</span><span id="Scan.from_expression-309"><a href="#Scan.from_expression-309"><span class="linenos">309</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="Scan.from_expression-310"><a href="#Scan.from_expression-310"><span class="linenos">310</span></a>            <span class="n">table</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span>
-</span><span id="Scan.from_expression-311"><a href="#Scan.from_expression-311"><span class="linenos">311</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">Step</span><span class="o">.</span><span class="n">from_expression</span><span class="p">(</span><span class="n">table</span><span class="p">,</span> <span class="n">ctes</span><span class="p">)</span>
-</span><span id="Scan.from_expression-312"><a href="#Scan.from_expression-312"><span class="linenos">312</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">alias_</span>
-</span><span id="Scan.from_expression-313"><a href="#Scan.from_expression-313"><span class="linenos">313</span></a>            <span class="k">return</span> <span class="n">step</span>
-</span><span id="Scan.from_expression-314"><a href="#Scan.from_expression-314"><span class="linenos">314</span></a>
-</span><span id="Scan.from_expression-315"><a href="#Scan.from_expression-315"><span class="linenos">315</span></a>        <span class="n">step</span> <span class="o">=</span> <span class="n">Scan</span><span class="p">()</span>
-</span><span id="Scan.from_expression-316"><a href="#Scan.from_expression-316"><span class="linenos">316</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">alias_</span>
-</span><span id="Scan.from_expression-317"><a href="#Scan.from_expression-317"><span class="linenos">317</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">source</span> <span class="o">=</span> <span class="n">expression</span>
-</span><span id="Scan.from_expression-318"><a href="#Scan.from_expression-318"><span class="linenos">318</span></a>        <span class="k">if</span> <span class="n">ctes</span> <span class="ow">and</span> <span class="n">table</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">ctes</span><span class="p">:</span>
-</span><span id="Scan.from_expression-319"><a href="#Scan.from_expression-319"><span class="linenos">319</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">ctes</span><span class="p">[</span><span class="n">table</span><span class="o">.</span><span class="n">name</span><span class="p">])</span>
-</span><span id="Scan.from_expression-320"><a href="#Scan.from_expression-320"><span class="linenos">320</span></a>
-</span><span id="Scan.from_expression-321"><a href="#Scan.from_expression-321"><span class="linenos">321</span></a>        <span class="k">return</span> <span class="n">step</span>
+            <div class="pdoc-code codehilite"><pre><span></span><span id="Scan.from_expression-303"><a href="#Scan.from_expression-303"><span class="linenos">303</span></a>    <span class="nd">@classmethod</span>
+</span><span id="Scan.from_expression-304"><a href="#Scan.from_expression-304"><span class="linenos">304</span></a>    <span class="k">def</span> <span class="nf">from_expression</span><span class="p">(</span>
+</span><span id="Scan.from_expression-305"><a href="#Scan.from_expression-305"><span class="linenos">305</span></a>        <span class="bp">cls</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">ctes</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="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Step</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span>
+</span><span id="Scan.from_expression-306"><a href="#Scan.from_expression-306"><span class="linenos">306</span></a>    <span class="p">)</span> <span class="o">-&gt;</span> <span class="n">Step</span><span class="p">:</span>
+</span><span id="Scan.from_expression-307"><a href="#Scan.from_expression-307"><span class="linenos">307</span></a>        <span class="n">table</span> <span class="o">=</span> <span class="n">expression</span>
+</span><span id="Scan.from_expression-308"><a href="#Scan.from_expression-308"><span class="linenos">308</span></a>        <span class="n">alias_</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">alias_or_name</span>
+</span><span id="Scan.from_expression-309"><a href="#Scan.from_expression-309"><span class="linenos">309</span></a>
+</span><span id="Scan.from_expression-310"><a href="#Scan.from_expression-310"><span class="linenos">310</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="Scan.from_expression-311"><a href="#Scan.from_expression-311"><span class="linenos">311</span></a>            <span class="n">table</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">this</span>
+</span><span id="Scan.from_expression-312"><a href="#Scan.from_expression-312"><span class="linenos">312</span></a>            <span class="n">step</span> <span class="o">=</span> <span class="n">Step</span><span class="o">.</span><span class="n">from_expression</span><span class="p">(</span><span class="n">table</span><span class="p">,</span> <span class="n">ctes</span><span class="p">)</span>
+</span><span id="Scan.from_expression-313"><a href="#Scan.from_expression-313"><span class="linenos">313</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">alias_</span>
+</span><span id="Scan.from_expression-314"><a href="#Scan.from_expression-314"><span class="linenos">314</span></a>            <span class="k">return</span> <span class="n">step</span>
+</span><span id="Scan.from_expression-315"><a href="#Scan.from_expression-315"><span class="linenos">315</span></a>
+</span><span id="Scan.from_expression-316"><a href="#Scan.from_expression-316"><span class="linenos">316</span></a>        <span class="n">step</span> <span class="o">=</span> <span class="n">Scan</span><span class="p">()</span>
+</span><span id="Scan.from_expression-317"><a href="#Scan.from_expression-317"><span class="linenos">317</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">alias_</span>
+</span><span id="Scan.from_expression-318"><a href="#Scan.from_expression-318"><span class="linenos">318</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">source</span> <span class="o">=</span> <span class="n">expression</span>
+</span><span id="Scan.from_expression-319"><a href="#Scan.from_expression-319"><span class="linenos">319</span></a>        <span class="k">if</span> <span class="n">ctes</span> <span class="ow">and</span> <span class="n">table</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">ctes</span><span class="p">:</span>
+</span><span id="Scan.from_expression-320"><a href="#Scan.from_expression-320"><span class="linenos">320</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">ctes</span><span class="p">[</span><span class="n">table</span><span class="o">.</span><span class="n">name</span><span class="p">])</span>
+</span><span id="Scan.from_expression-321"><a href="#Scan.from_expression-321"><span class="linenos">321</span></a>
+</span><span id="Scan.from_expression-322"><a href="#Scan.from_expression-322"><span class="linenos">322</span></a>        <span class="k">return</span> <span class="n">step</span>
 </span></pre></div>
 
 
@@ -1688,40 +1695,41 @@ Projections:</li>
 
     </div>
     <a class="headerlink" href="#Join"></a>
-            <div class="pdoc-code codehilite"><pre><span></span><span id="Join-331"><a href="#Join-331"><span class="linenos">331</span></a><span class="k">class</span> <span class="nc">Join</span><span class="p">(</span><span class="n">Step</span><span class="p">):</span>
-</span><span id="Join-332"><a href="#Join-332"><span class="linenos">332</span></a>    <span class="nd">@classmethod</span>
-</span><span id="Join-333"><a href="#Join-333"><span class="linenos">333</span></a>    <span class="k">def</span> <span class="nf">from_joins</span><span class="p">(</span>
-</span><span id="Join-334"><a href="#Join-334"><span class="linenos">334</span></a>        <span class="bp">cls</span><span class="p">,</span> <span class="n">joins</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Iterable</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">ctes</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="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Step</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span>
-</span><span id="Join-335"><a href="#Join-335"><span class="linenos">335</span></a>    <span class="p">)</span> <span class="o">-&gt;</span> <span class="n">Step</span><span class="p">:</span>
-</span><span id="Join-336"><a href="#Join-336"><span class="linenos">336</span></a>        <span class="n">step</span> <span class="o">=</span> <span class="n">Join</span><span class="p">()</span>
-</span><span id="Join-337"><a href="#Join-337"><span class="linenos">337</span></a>
-</span><span id="Join-338"><a href="#Join-338"><span class="linenos">338</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="Join-339"><a href="#Join-339"><span class="linenos">339</span></a>            <span class="n">source_key</span><span class="p">,</span> <span class="n">join_key</span><span class="p">,</span> <span class="n">condition</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="Join-340"><a href="#Join-340"><span class="linenos">340</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">joins</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="o">=</span> <span class="p">{</span>
-</span><span id="Join-341"><a href="#Join-341"><span class="linenos">341</span></a>                <span class="s2">&quot;side&quot;</span><span class="p">:</span> <span class="n">join</span><span class="o">.</span><span class="n">side</span><span class="p">,</span>  <span class="c1"># type: ignore</span>
-</span><span id="Join-342"><a href="#Join-342"><span class="linenos">342</span></a>                <span class="s2">&quot;join_key&quot;</span><span class="p">:</span> <span class="n">join_key</span><span class="p">,</span>
-</span><span id="Join-343"><a href="#Join-343"><span class="linenos">343</span></a>                <span class="s2">&quot;source_key&quot;</span><span class="p">:</span> <span class="n">source_key</span><span class="p">,</span>
-</span><span id="Join-344"><a href="#Join-344"><span class="linenos">344</span></a>                <span class="s2">&quot;condition&quot;</span><span class="p">:</span> <span class="n">condition</span><span class="p">,</span>
-</span><span id="Join-345"><a href="#Join-345"><span class="linenos">345</span></a>            <span class="p">}</span>
-</span><span id="Join-346"><a href="#Join-346"><span class="linenos">346</span></a>
-</span><span id="Join-347"><a href="#Join-347"><span class="linenos">347</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">Scan</span><span class="o">.</span><span class="n">from_expression</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">ctes</span><span class="p">))</span>
-</span><span id="Join-348"><a href="#Join-348"><span class="linenos">348</span></a>
-</span><span id="Join-349"><a href="#Join-349"><span class="linenos">349</span></a>        <span class="k">return</span> <span class="n">step</span>
-</span><span id="Join-350"><a href="#Join-350"><span class="linenos">350</span></a>
-</span><span id="Join-351"><a href="#Join-351"><span class="linenos">351</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="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
-</span><span id="Join-352"><a href="#Join-352"><span class="linenos">352</span></a>        <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>
-</span><span id="Join-353"><a href="#Join-353"><span class="linenos">353</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">joins</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">str</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">str</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</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 class="o">=</span> <span class="p">{}</span>
-</span><span id="Join-354"><a href="#Join-354"><span class="linenos">354</span></a>
-</span><span id="Join-355"><a href="#Join-355"><span class="linenos">355</span></a>    <span class="k">def</span> <span class="nf">_to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">indent</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
-</span><span id="Join-356"><a href="#Join-356"><span class="linenos">356</span></a>        <span class="n">lines</span> <span class="o">=</span> <span class="p">[]</span>
-</span><span id="Join-357"><a href="#Join-357"><span class="linenos">357</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="bp">self</span><span class="o">.</span><span class="n">joins</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
-</span><span id="Join-358"><a href="#Join-358"><span class="linenos">358</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}{</span><span class="n">name</span><span class="si">}</span><span class="s2">: </span><span class="si">{</span><span class="n">join</span><span class="p">[</span><span class="s1">&#39;side&#39;</span><span class="p">]</span><span class="w"> </span><span class="ow">or</span><span class="w"> </span><span class="s1">&#39;INNER&#39;</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
-</span><span id="Join-359"><a href="#Join-359"><span class="linenos">359</span></a>            <span class="n">join_key</span> <span class="o">=</span> <span class="s2">&quot;, &quot;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="nb">str</span><span class="p">(</span><span class="n">key</span><span class="p">)</span> <span class="k">for</span> <span class="n">key</span> <span class="ow">in</span> <span class="n">t</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span><span class="nb">list</span><span class="p">,</span> <span class="n">join</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;join_key&quot;</span><span class="p">)</span> <span class="ow">or</span> <span class="p">[]))</span>
-</span><span id="Join-360"><a href="#Join-360"><span class="linenos">360</span></a>            <span class="k">if</span> <span class="n">join_key</span><span class="p">:</span>
-</span><span id="Join-361"><a href="#Join-361"><span class="linenos">361</span></a>                <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Key: </span><span class="si">{</span><span class="n">join_key</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
-</span><span id="Join-362"><a href="#Join-362"><span class="linenos">362</span></a>            <span class="k">if</span> <span class="n">join</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;condition&quot;</span><span class="p">):</span>
-</span><span id="Join-363"><a href="#Join-363"><span class="linenos">363</span></a>                <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">On: </span><span class="si">{</span><span class="n">join</span><span class="p">[</span><span class="s1">&#39;condition&#39;</span><span class="p">]</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>  <span class="c1"># type: ignore</span>
-</span><span id="Join-364"><a href="#Join-364"><span class="linenos">364</span></a>        <span class="k">return</span> <span class="n">lines</span>
+            <div class="pdoc-code codehilite"><pre><span></span><span id="Join-332"><a href="#Join-332"><span class="linenos">332</span></a><span class="k">class</span> <span class="nc">Join</span><span class="p">(</span><span class="n">Step</span><span class="p">):</span>
+</span><span id="Join-333"><a href="#Join-333"><span class="linenos">333</span></a>    <span class="nd">@classmethod</span>
+</span><span id="Join-334"><a href="#Join-334"><span class="linenos">334</span></a>    <span class="k">def</span> <span class="nf">from_joins</span><span class="p">(</span>
+</span><span id="Join-335"><a href="#Join-335"><span class="linenos">335</span></a>        <span class="bp">cls</span><span class="p">,</span> <span class="n">joins</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Iterable</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">ctes</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="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Step</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span>
+</span><span id="Join-336"><a href="#Join-336"><span class="linenos">336</span></a>    <span class="p">)</span> <span class="o">-&gt;</span> <span class="n">Join</span><span class="p">:</span>
+</span><span id="Join-337"><a href="#Join-337"><span class="linenos">337</span></a>        <span class="n">step</span> <span class="o">=</span> <span class="n">Join</span><span class="p">()</span>
+</span><span id="Join-338"><a href="#Join-338"><span class="linenos">338</span></a>
+</span><span id="Join-339"><a href="#Join-339"><span class="linenos">339</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="Join-340"><a href="#Join-340"><span class="linenos">340</span></a>            <span class="n">source_key</span><span class="p">,</span> <span class="n">join_key</span><span class="p">,</span> <span class="n">condition</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="Join-341"><a href="#Join-341"><span class="linenos">341</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">joins</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="o">=</span> <span class="p">{</span>
+</span><span id="Join-342"><a href="#Join-342"><span class="linenos">342</span></a>                <span class="s2">&quot;side&quot;</span><span class="p">:</span> <span class="n">join</span><span class="o">.</span><span class="n">side</span><span class="p">,</span>  <span class="c1"># type: ignore</span>
+</span><span id="Join-343"><a href="#Join-343"><span class="linenos">343</span></a>                <span class="s2">&quot;join_key&quot;</span><span class="p">:</span> <span class="n">join_key</span><span class="p">,</span>
+</span><span id="Join-344"><a href="#Join-344"><span class="linenos">344</span></a>                <span class="s2">&quot;source_key&quot;</span><span class="p">:</span> <span class="n">source_key</span><span class="p">,</span>
+</span><span id="Join-345"><a href="#Join-345"><span class="linenos">345</span></a>                <span class="s2">&quot;condition&quot;</span><span class="p">:</span> <span class="n">condition</span><span class="p">,</span>
+</span><span id="Join-346"><a href="#Join-346"><span class="linenos">346</span></a>            <span class="p">}</span>
+</span><span id="Join-347"><a href="#Join-347"><span class="linenos">347</span></a>
+</span><span id="Join-348"><a href="#Join-348"><span class="linenos">348</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">Scan</span><span class="o">.</span><span class="n">from_expression</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">ctes</span><span class="p">))</span>
+</span><span id="Join-349"><a href="#Join-349"><span class="linenos">349</span></a>
+</span><span id="Join-350"><a href="#Join-350"><span class="linenos">350</span></a>        <span class="k">return</span> <span class="n">step</span>
+</span><span id="Join-351"><a href="#Join-351"><span class="linenos">351</span></a>
+</span><span id="Join-352"><a href="#Join-352"><span class="linenos">352</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="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
+</span><span id="Join-353"><a href="#Join-353"><span class="linenos">353</span></a>        <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>
+</span><span id="Join-354"><a href="#Join-354"><span class="linenos">354</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">source_name</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><span id="Join-355"><a href="#Join-355"><span class="linenos">355</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">joins</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">str</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">str</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</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 class="o">=</span> <span class="p">{}</span>
+</span><span id="Join-356"><a href="#Join-356"><span class="linenos">356</span></a>
+</span><span id="Join-357"><a href="#Join-357"><span class="linenos">357</span></a>    <span class="k">def</span> <span class="nf">_to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">indent</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
+</span><span id="Join-358"><a href="#Join-358"><span class="linenos">358</span></a>        <span class="n">lines</span> <span class="o">=</span> <span class="p">[</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Source: </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">source_name</span><span class="w"> </span><span class="ow">or</span><span class="w"> </span><span class="bp">self</span><span class="o">.</span><span class="n">name</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">]</span>
+</span><span id="Join-359"><a href="#Join-359"><span class="linenos">359</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="bp">self</span><span class="o">.</span><span class="n">joins</span><span class="o">.</span><span class="n">items</span><span class="p">():</span>
+</span><span id="Join-360"><a href="#Join-360"><span class="linenos">360</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}{</span><span class="n">name</span><span class="si">}</span><span class="s2">: </span><span class="si">{</span><span class="n">join</span><span class="p">[</span><span class="s1">&#39;side&#39;</span><span class="p">]</span><span class="w"> </span><span class="ow">or</span><span class="w"> </span><span class="s1">&#39;INNER&#39;</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
+</span><span id="Join-361"><a href="#Join-361"><span class="linenos">361</span></a>            <span class="n">join_key</span> <span class="o">=</span> <span class="s2">&quot;, &quot;</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="nb">str</span><span class="p">(</span><span class="n">key</span><span class="p">)</span> <span class="k">for</span> <span class="n">key</span> <span class="ow">in</span> <span class="n">t</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span><span class="nb">list</span><span class="p">,</span> <span class="n">join</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;join_key&quot;</span><span class="p">)</span> <span class="ow">or</span> <span class="p">[]))</span>
+</span><span id="Join-362"><a href="#Join-362"><span class="linenos">362</span></a>            <span class="k">if</span> <span class="n">join_key</span><span class="p">:</span>
+</span><span id="Join-363"><a href="#Join-363"><span class="linenos">363</span></a>                <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Key: </span><span class="si">{</span><span class="n">join_key</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
+</span><span id="Join-364"><a href="#Join-364"><span class="linenos">364</span></a>            <span class="k">if</span> <span class="n">join</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">&quot;condition&quot;</span><span class="p">):</span>
+</span><span id="Join-365"><a href="#Join-365"><span class="linenos">365</span></a>                <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">On: </span><span class="si">{</span><span class="n">join</span><span class="p">[</span><span class="s1">&#39;condition&#39;</span><span class="p">]</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>  <span class="c1"># type: ignore</span>
+</span><span id="Join-366"><a href="#Join-366"><span class="linenos">366</span></a>        <span class="k">return</span> <span class="n">lines</span>
 </span></pre></div>
 
 
@@ -1733,36 +1741,47 @@ Projections:</li>
                     <div class="decorator">@classmethod</div>
 
         <span class="def">def</span>
-        <span class="name">from_joins</span><span class="signature pdoc-code multiline">(<span class="param">	<span class="bp">cls</span>,</span><span class="param">	<span class="n">joins</span><span class="p">:</span> <span class="n">Iterable</span><span class="p">[</span><span class="n"><a href="expressions.html#Join">sqlglot.expressions.Join</a></span><span class="p">]</span>,</span><span class="param">	<span class="n">ctes</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n"><a href="#Step">Step</a></span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span></span><span class="return-annotation">) -> <span class="n"><a href="#Step">Step</a></span>:</span></span>
+        <span class="name">from_joins</span><span class="signature pdoc-code multiline">(<span class="param">	<span class="bp">cls</span>,</span><span class="param">	<span class="n">joins</span><span class="p">:</span> <span class="n">Iterable</span><span class="p">[</span><span class="n"><a href="expressions.html#Join">sqlglot.expressions.Join</a></span><span class="p">]</span>,</span><span class="param">	<span class="n">ctes</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n"><a href="#Step">Step</a></span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span></span><span class="return-annotation">) -> <span class="n"><a href="#Join">Join</a></span>:</span></span>
 
                 <label class="view-source-button" for="Join.from_joins-view-source"><span>View Source</span></label>
 
     </div>
     <a class="headerlink" href="#Join.from_joins"></a>
-            <div class="pdoc-code codehilite"><pre><span></span><span id="Join.from_joins-332"><a href="#Join.from_joins-332"><span class="linenos">332</span></a>    <span class="nd">@classmethod</span>
-</span><span id="Join.from_joins-333"><a href="#Join.from_joins-333"><span class="linenos">333</span></a>    <span class="k">def</span> <span class="nf">from_joins</span><span class="p">(</span>
-</span><span id="Join.from_joins-334"><a href="#Join.from_joins-334"><span class="linenos">334</span></a>        <span class="bp">cls</span><span class="p">,</span> <span class="n">joins</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Iterable</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">ctes</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="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Step</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span>
-</span><span id="Join.from_joins-335"><a href="#Join.from_joins-335"><span class="linenos">335</span></a>    <span class="p">)</span> <span class="o">-&gt;</span> <span class="n">Step</span><span class="p">:</span>
-</span><span id="Join.from_joins-336"><a href="#Join.from_joins-336"><span class="linenos">336</span></a>        <span class="n">step</span> <span class="o">=</span> <span class="n">Join</span><span class="p">()</span>
-</span><span id="Join.from_joins-337"><a href="#Join.from_joins-337"><span class="linenos">337</span></a>
-</span><span id="Join.from_joins-338"><a href="#Join.from_joins-338"><span class="linenos">338</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="Join.from_joins-339"><a href="#Join.from_joins-339"><span class="linenos">339</span></a>            <span class="n">source_key</span><span class="p">,</span> <span class="n">join_key</span><span class="p">,</span> <span class="n">condition</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="Join.from_joins-340"><a href="#Join.from_joins-340"><span class="linenos">340</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">joins</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="o">=</span> <span class="p">{</span>
-</span><span id="Join.from_joins-341"><a href="#Join.from_joins-341"><span class="linenos">341</span></a>                <span class="s2">&quot;side&quot;</span><span class="p">:</span> <span class="n">join</span><span class="o">.</span><span class="n">side</span><span class="p">,</span>  <span class="c1"># type: ignore</span>
-</span><span id="Join.from_joins-342"><a href="#Join.from_joins-342"><span class="linenos">342</span></a>                <span class="s2">&quot;join_key&quot;</span><span class="p">:</span> <span class="n">join_key</span><span class="p">,</span>
-</span><span id="Join.from_joins-343"><a href="#Join.from_joins-343"><span class="linenos">343</span></a>                <span class="s2">&quot;source_key&quot;</span><span class="p">:</span> <span class="n">source_key</span><span class="p">,</span>
-</span><span id="Join.from_joins-344"><a href="#Join.from_joins-344"><span class="linenos">344</span></a>                <span class="s2">&quot;condition&quot;</span><span class="p">:</span> <span class="n">condition</span><span class="p">,</span>
-</span><span id="Join.from_joins-345"><a href="#Join.from_joins-345"><span class="linenos">345</span></a>            <span class="p">}</span>
-</span><span id="Join.from_joins-346"><a href="#Join.from_joins-346"><span class="linenos">346</span></a>
-</span><span id="Join.from_joins-347"><a href="#Join.from_joins-347"><span class="linenos">347</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">Scan</span><span class="o">.</span><span class="n">from_expression</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">ctes</span><span class="p">))</span>
-</span><span id="Join.from_joins-348"><a href="#Join.from_joins-348"><span class="linenos">348</span></a>
-</span><span id="Join.from_joins-349"><a href="#Join.from_joins-349"><span class="linenos">349</span></a>        <span class="k">return</span> <span class="n">step</span>
+            <div class="pdoc-code codehilite"><pre><span></span><span id="Join.from_joins-333"><a href="#Join.from_joins-333"><span class="linenos">333</span></a>    <span class="nd">@classmethod</span>
+</span><span id="Join.from_joins-334"><a href="#Join.from_joins-334"><span class="linenos">334</span></a>    <span class="k">def</span> <span class="nf">from_joins</span><span class="p">(</span>
+</span><span id="Join.from_joins-335"><a href="#Join.from_joins-335"><span class="linenos">335</span></a>        <span class="bp">cls</span><span class="p">,</span> <span class="n">joins</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Iterable</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">ctes</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="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Step</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span>
+</span><span id="Join.from_joins-336"><a href="#Join.from_joins-336"><span class="linenos">336</span></a>    <span class="p">)</span> <span class="o">-&gt;</span> <span class="n">Join</span><span class="p">:</span>
+</span><span id="Join.from_joins-337"><a href="#Join.from_joins-337"><span class="linenos">337</span></a>        <span class="n">step</span> <span class="o">=</span> <span class="n">Join</span><span class="p">()</span>
+</span><span id="Join.from_joins-338"><a href="#Join.from_joins-338"><span class="linenos">338</span></a>
+</span><span id="Join.from_joins-339"><a href="#Join.from_joins-339"><span class="linenos">339</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="Join.from_joins-340"><a href="#Join.from_joins-340"><span class="linenos">340</span></a>            <span class="n">source_key</span><span class="p">,</span> <span class="n">join_key</span><span class="p">,</span> <span class="n">condition</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="Join.from_joins-341"><a href="#Join.from_joins-341"><span class="linenos">341</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">joins</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="o">=</span> <span class="p">{</span>
+</span><span id="Join.from_joins-342"><a href="#Join.from_joins-342"><span class="linenos">342</span></a>                <span class="s2">&quot;side&quot;</span><span class="p">:</span> <span class="n">join</span><span class="o">.</span><span class="n">side</span><span class="p">,</span>  <span class="c1"># type: ignore</span>
+</span><span id="Join.from_joins-343"><a href="#Join.from_joins-343"><span class="linenos">343</span></a>                <span class="s2">&quot;join_key&quot;</span><span class="p">:</span> <span class="n">join_key</span><span class="p">,</span>
+</span><span id="Join.from_joins-344"><a href="#Join.from_joins-344"><span class="linenos">344</span></a>                <span class="s2">&quot;source_key&quot;</span><span class="p">:</span> <span class="n">source_key</span><span class="p">,</span>
+</span><span id="Join.from_joins-345"><a href="#Join.from_joins-345"><span class="linenos">345</span></a>                <span class="s2">&quot;condition&quot;</span><span class="p">:</span> <span class="n">condition</span><span class="p">,</span>
+</span><span id="Join.from_joins-346"><a href="#Join.from_joins-346"><span class="linenos">346</span></a>            <span class="p">}</span>
+</span><span id="Join.from_joins-347"><a href="#Join.from_joins-347"><span class="linenos">347</span></a>
+</span><span id="Join.from_joins-348"><a href="#Join.from_joins-348"><span class="linenos">348</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">Scan</span><span class="o">.</span><span class="n">from_expression</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">ctes</span><span class="p">))</span>
+</span><span id="Join.from_joins-349"><a href="#Join.from_joins-349"><span class="linenos">349</span></a>
+</span><span id="Join.from_joins-350"><a href="#Join.from_joins-350"><span class="linenos">350</span></a>        <span class="k">return</span> <span class="n">step</span>
 </span></pre></div>
 
 
     
 
                             </div>
+                            <div id="Join.source_name" class="classattr">
+                                <div class="attr variable">
+            <span class="name">source_name</span><span class="annotation">: Optional[str]</span>
+
+        
+    </div>
+    <a class="headerlink" href="#Join.source_name"></a>
+    
+    
+
+                            </div>
                             <div id="Join.joins" class="classattr">
                                 <div class="attr variable">
             <span class="name">joins</span><span class="annotation">: Dict[str, Dict[str, Union[List[str], <a href="expressions.html#Expression">sqlglot.expressions.Expression</a>]]]</span>
@@ -1805,33 +1824,33 @@ Projections:</li>
 
     </div>
     <a class="headerlink" href="#Aggregate"></a>
-            <div class="pdoc-code codehilite"><pre><span></span><span id="Aggregate-367"><a href="#Aggregate-367"><span class="linenos">367</span></a><span class="k">class</span> <span class="nc">Aggregate</span><span class="p">(</span><span class="n">Step</span><span class="p">):</span>
-</span><span id="Aggregate-368"><a href="#Aggregate-368"><span class="linenos">368</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="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
-</span><span id="Aggregate-369"><a href="#Aggregate-369"><span class="linenos">369</span></a>        <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>
-</span><span id="Aggregate-370"><a href="#Aggregate-370"><span class="linenos">370</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">aggregations</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">List</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="p">[]</span>
-</span><span id="Aggregate-371"><a href="#Aggregate-371"><span class="linenos">371</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">operands</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Tuple</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="p">]</span> <span class="o">=</span> <span class="p">()</span>
-</span><span id="Aggregate-372"><a href="#Aggregate-372"><span class="linenos">372</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">group</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">str</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="p">{}</span>
-</span><span id="Aggregate-373"><a href="#Aggregate-373"><span class="linenos">373</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">source</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><span id="Aggregate-374"><a href="#Aggregate-374"><span class="linenos">374</span></a>
-</span><span id="Aggregate-375"><a href="#Aggregate-375"><span class="linenos">375</span></a>    <span class="k">def</span> <span class="nf">_to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">indent</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
-</span><span id="Aggregate-376"><a href="#Aggregate-376"><span class="linenos">376</span></a>        <span class="n">lines</span> <span class="o">=</span> <span class="p">[</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Aggregations:&quot;</span><span class="p">]</span>
-</span><span id="Aggregate-377"><a href="#Aggregate-377"><span class="linenos">377</span></a>
-</span><span id="Aggregate-378"><a href="#Aggregate-378"><span class="linenos">378</span></a>        <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">aggregations</span><span class="p">:</span>
-</span><span id="Aggregate-379"><a href="#Aggregate-379"><span class="linenos">379</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="n">expression</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
-</span><span id="Aggregate-380"><a href="#Aggregate-380"><span class="linenos">380</span></a>
-</span><span id="Aggregate-381"><a href="#Aggregate-381"><span class="linenos">381</span></a>        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">group</span><span class="p">:</span>
-</span><span id="Aggregate-382"><a href="#Aggregate-382"><span class="linenos">382</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Group:&quot;</span><span class="p">)</span>
-</span><span id="Aggregate-383"><a href="#Aggregate-383"><span class="linenos">383</span></a>            <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">group</span><span class="o">.</span><span class="n">values</span><span class="p">():</span>
-</span><span id="Aggregate-384"><a href="#Aggregate-384"><span class="linenos">384</span></a>                <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="n">expression</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
-</span><span id="Aggregate-385"><a href="#Aggregate-385"><span class="linenos">385</span></a>        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">condition</span><span class="p">:</span>
-</span><span id="Aggregate-386"><a href="#Aggregate-386"><span class="linenos">386</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Having:&quot;</span><span class="p">)</span>
-</span><span id="Aggregate-387"><a href="#Aggregate-387"><span class="linenos">387</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">condition</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
-</span><span id="Aggregate-388"><a href="#Aggregate-388"><span class="linenos">388</span></a>        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">operands</span><span class="p">:</span>
-</span><span id="Aggregate-389"><a href="#Aggregate-389"><span class="linenos">389</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Operands:&quot;</span><span class="p">)</span>
-</span><span id="Aggregate-390"><a href="#Aggregate-390"><span class="linenos">390</span></a>            <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">operands</span><span class="p">:</span>
-</span><span id="Aggregate-391"><a href="#Aggregate-391"><span class="linenos">391</span></a>                <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="n">expression</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
-</span><span id="Aggregate-392"><a href="#Aggregate-392"><span class="linenos">392</span></a>
-</span><span id="Aggregate-393"><a href="#Aggregate-393"><span class="linenos">393</span></a>        <span class="k">return</span> <span class="n">lines</span>
+            <div class="pdoc-code codehilite"><pre><span></span><span id="Aggregate-369"><a href="#Aggregate-369"><span class="linenos">369</span></a><span class="k">class</span> <span class="nc">Aggregate</span><span class="p">(</span><span class="n">Step</span><span class="p">):</span>
+</span><span id="Aggregate-370"><a href="#Aggregate-370"><span class="linenos">370</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="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
+</span><span id="Aggregate-371"><a href="#Aggregate-371"><span class="linenos">371</span></a>        <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>
+</span><span id="Aggregate-372"><a href="#Aggregate-372"><span class="linenos">372</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">aggregations</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">List</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="p">[]</span>
+</span><span id="Aggregate-373"><a href="#Aggregate-373"><span class="linenos">373</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">operands</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Tuple</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="p">]</span> <span class="o">=</span> <span class="p">()</span>
+</span><span id="Aggregate-374"><a href="#Aggregate-374"><span class="linenos">374</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">group</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">str</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="p">{}</span>
+</span><span id="Aggregate-375"><a href="#Aggregate-375"><span class="linenos">375</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">source</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><span id="Aggregate-376"><a href="#Aggregate-376"><span class="linenos">376</span></a>
+</span><span id="Aggregate-377"><a href="#Aggregate-377"><span class="linenos">377</span></a>    <span class="k">def</span> <span class="nf">_to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">indent</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
+</span><span id="Aggregate-378"><a href="#Aggregate-378"><span class="linenos">378</span></a>        <span class="n">lines</span> <span class="o">=</span> <span class="p">[</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Aggregations:&quot;</span><span class="p">]</span>
+</span><span id="Aggregate-379"><a href="#Aggregate-379"><span class="linenos">379</span></a>
+</span><span id="Aggregate-380"><a href="#Aggregate-380"><span class="linenos">380</span></a>        <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">aggregations</span><span class="p">:</span>
+</span><span id="Aggregate-381"><a href="#Aggregate-381"><span class="linenos">381</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="n">expression</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
+</span><span id="Aggregate-382"><a href="#Aggregate-382"><span class="linenos">382</span></a>
+</span><span id="Aggregate-383"><a href="#Aggregate-383"><span class="linenos">383</span></a>        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">group</span><span class="p">:</span>
+</span><span id="Aggregate-384"><a href="#Aggregate-384"><span class="linenos">384</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Group:&quot;</span><span class="p">)</span>
+</span><span id="Aggregate-385"><a href="#Aggregate-385"><span class="linenos">385</span></a>            <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">group</span><span class="o">.</span><span class="n">values</span><span class="p">():</span>
+</span><span id="Aggregate-386"><a href="#Aggregate-386"><span class="linenos">386</span></a>                <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="n">expression</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
+</span><span id="Aggregate-387"><a href="#Aggregate-387"><span class="linenos">387</span></a>        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">condition</span><span class="p">:</span>
+</span><span id="Aggregate-388"><a href="#Aggregate-388"><span class="linenos">388</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Having:&quot;</span><span class="p">)</span>
+</span><span id="Aggregate-389"><a href="#Aggregate-389"><span class="linenos">389</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">condition</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
+</span><span id="Aggregate-390"><a href="#Aggregate-390"><span class="linenos">390</span></a>        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">operands</span><span class="p">:</span>
+</span><span id="Aggregate-391"><a href="#Aggregate-391"><span class="linenos">391</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Operands:&quot;</span><span class="p">)</span>
+</span><span id="Aggregate-392"><a href="#Aggregate-392"><span class="linenos">392</span></a>            <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">operands</span><span class="p">:</span>
+</span><span id="Aggregate-393"><a href="#Aggregate-393"><span class="linenos">393</span></a>                <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="n">expression</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
+</span><span id="Aggregate-394"><a href="#Aggregate-394"><span class="linenos">394</span></a>
+</span><span id="Aggregate-395"><a href="#Aggregate-395"><span class="linenos">395</span></a>        <span class="k">return</span> <span class="n">lines</span>
 </span></pre></div>
 
 
@@ -1912,18 +1931,18 @@ Projections:</li>
 
     </div>
     <a class="headerlink" href="#Sort"></a>
-            <div class="pdoc-code codehilite"><pre><span></span><span id="Sort-396"><a href="#Sort-396"><span class="linenos">396</span></a><span class="k">class</span> <span class="nc">Sort</span><span class="p">(</span><span class="n">Step</span><span class="p">):</span>
-</span><span id="Sort-397"><a href="#Sort-397"><span class="linenos">397</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="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
-</span><span id="Sort-398"><a href="#Sort-398"><span class="linenos">398</span></a>        <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>
-</span><span id="Sort-399"><a href="#Sort-399"><span class="linenos">399</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">key</span> <span class="o">=</span> <span class="kc">None</span>
-</span><span id="Sort-400"><a href="#Sort-400"><span class="linenos">400</span></a>
-</span><span id="Sort-401"><a href="#Sort-401"><span class="linenos">401</span></a>    <span class="k">def</span> <span class="nf">_to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">indent</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
-</span><span id="Sort-402"><a href="#Sort-402"><span class="linenos">402</span></a>        <span class="n">lines</span> <span class="o">=</span> <span class="p">[</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Key:&quot;</span><span class="p">]</span>
-</span><span id="Sort-403"><a href="#Sort-403"><span class="linenos">403</span></a>
-</span><span id="Sort-404"><a href="#Sort-404"><span class="linenos">404</span></a>        <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">key</span><span class="p">:</span>  <span class="c1"># type: ignore</span>
-</span><span id="Sort-405"><a href="#Sort-405"><span class="linenos">405</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="n">expression</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
-</span><span id="Sort-406"><a href="#Sort-406"><span class="linenos">406</span></a>
-</span><span id="Sort-407"><a href="#Sort-407"><span class="linenos">407</span></a>        <span class="k">return</span> <span class="n">lines</span>
+            <div class="pdoc-code codehilite"><pre><span></span><span id="Sort-398"><a href="#Sort-398"><span class="linenos">398</span></a><span class="k">class</span> <span class="nc">Sort</span><span class="p">(</span><span class="n">Step</span><span class="p">):</span>
+</span><span id="Sort-399"><a href="#Sort-399"><span class="linenos">399</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="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
+</span><span id="Sort-400"><a href="#Sort-400"><span class="linenos">400</span></a>        <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>
+</span><span id="Sort-401"><a href="#Sort-401"><span class="linenos">401</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">key</span> <span class="o">=</span> <span class="kc">None</span>
+</span><span id="Sort-402"><a href="#Sort-402"><span class="linenos">402</span></a>
+</span><span id="Sort-403"><a href="#Sort-403"><span class="linenos">403</span></a>    <span class="k">def</span> <span class="nf">_to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">indent</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
+</span><span id="Sort-404"><a href="#Sort-404"><span class="linenos">404</span></a>        <span class="n">lines</span> <span class="o">=</span> <span class="p">[</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Key:&quot;</span><span class="p">]</span>
+</span><span id="Sort-405"><a href="#Sort-405"><span class="linenos">405</span></a>
+</span><span id="Sort-406"><a href="#Sort-406"><span class="linenos">406</span></a>        <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">key</span><span class="p">:</span>  <span class="c1"># type: ignore</span>
+</span><span id="Sort-407"><a href="#Sort-407"><span class="linenos">407</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">  - </span><span class="si">{</span><span class="n">expression</span><span class="o">.</span><span class="n">sql</span><span class="p">()</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
+</span><span id="Sort-408"><a href="#Sort-408"><span class="linenos">408</span></a>
+</span><span id="Sort-409"><a href="#Sort-409"><span class="linenos">409</span></a>        <span class="k">return</span> <span class="n">lines</span>
 </span></pre></div>
 
 
@@ -1971,57 +1990,57 @@ Projections:</li>
 
     </div>
     <a class="headerlink" href="#SetOperation"></a>
-            <div class="pdoc-code codehilite"><pre><span></span><span id="SetOperation-410"><a href="#SetOperation-410"><span class="linenos">410</span></a><span class="k">class</span> <span class="nc">SetOperation</span><span class="p">(</span><span class="n">Step</span><span class="p">):</span>
-</span><span id="SetOperation-411"><a href="#SetOperation-411"><span class="linenos">411</span></a>    <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span>
-</span><span id="SetOperation-412"><a href="#SetOperation-412"><span class="linenos">412</span></a>        <span class="bp">self</span><span class="p">,</span>
-</span><span id="SetOperation-413"><a href="#SetOperation-413"><span class="linenos">413</span></a>        <span class="n">op</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Type</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="SetOperation-414"><a href="#SetOperation-414"><span class="linenos">414</span></a>        <span class="n">left</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="kc">None</span><span class="p">,</span>
-</span><span id="SetOperation-415"><a href="#SetOperation-415"><span class="linenos">415</span></a>        <span class="n">right</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="kc">None</span><span class="p">,</span>
-</span><span id="SetOperation-416"><a href="#SetOperation-416"><span class="linenos">416</span></a>        <span class="n">distinct</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span><span class="p">,</span>
-</span><span id="SetOperation-417"><a href="#SetOperation-417"><span class="linenos">417</span></a>    <span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
-</span><span id="SetOperation-418"><a href="#SetOperation-418"><span class="linenos">418</span></a>        <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>
-</span><span id="SetOperation-419"><a href="#SetOperation-419"><span class="linenos">419</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">op</span> <span class="o">=</span> <span class="n">op</span>
-</span><span id="SetOperation-420"><a href="#SetOperation-420"><span class="linenos">420</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">left</span> <span class="o">=</span> <span class="n">left</span>
-</span><span id="SetOperation-421"><a href="#SetOperation-421"><span class="linenos">421</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">right</span> <span class="o">=</span> <span class="n">right</span>
-</span><span id="SetOperation-422"><a href="#SetOperation-422"><span class="linenos">422</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">distinct</span> <span class="o">=</span> <span class="n">distinct</span>
-</span><span id="SetOperation-423"><a href="#SetOperation-423"><span class="linenos">423</span></a>
-</span><span id="SetOperation-424"><a href="#SetOperation-424"><span class="linenos">424</span></a>    <span class="nd">@classmethod</span>
-</span><span id="SetOperation-425"><a href="#SetOperation-425"><span class="linenos">425</span></a>    <span class="k">def</span> <span class="nf">from_expression</span><span class="p">(</span>
-</span><span id="SetOperation-426"><a href="#SetOperation-426"><span class="linenos">426</span></a>        <span class="bp">cls</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">ctes</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="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Step</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span>
-</span><span id="SetOperation-427"><a href="#SetOperation-427"><span class="linenos">427</span></a>    <span class="p">)</span> <span class="o">-&gt;</span> <span class="n">Step</span><span class="p">:</span>
-</span><span id="SetOperation-428"><a href="#SetOperation-428"><span class="linenos">428</span></a>        <span class="k">assert</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="SetOperation-429"><a href="#SetOperation-429"><span class="linenos">429</span></a>
-</span><span id="SetOperation-430"><a href="#SetOperation-430"><span class="linenos">430</span></a>        <span class="n">left</span> <span class="o">=</span> <span class="n">Step</span><span class="o">.</span><span class="n">from_expression</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">left</span><span class="p">,</span> <span class="n">ctes</span><span class="p">)</span>
-</span><span id="SetOperation-431"><a href="#SetOperation-431"><span class="linenos">431</span></a>        <span class="c1"># SELECT 1 UNION SELECT 2  &lt;-- these subqueries don&#39;t have names</span>
-</span><span id="SetOperation-432"><a href="#SetOperation-432"><span class="linenos">432</span></a>        <span class="n">left</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">left</span><span class="o">.</span><span class="n">name</span> <span class="ow">or</span> <span class="s2">&quot;left&quot;</span>
-</span><span id="SetOperation-433"><a href="#SetOperation-433"><span class="linenos">433</span></a>        <span class="n">right</span> <span class="o">=</span> <span class="n">Step</span><span class="o">.</span><span class="n">from_expression</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">right</span><span class="p">,</span> <span class="n">ctes</span><span class="p">)</span>
-</span><span id="SetOperation-434"><a href="#SetOperation-434"><span class="linenos">434</span></a>        <span class="n">right</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">right</span><span class="o">.</span><span class="n">name</span> <span class="ow">or</span> <span class="s2">&quot;right&quot;</span>
-</span><span id="SetOperation-435"><a href="#SetOperation-435"><span class="linenos">435</span></a>        <span class="n">step</span> <span class="o">=</span> <span class="bp">cls</span><span class="p">(</span>
-</span><span id="SetOperation-436"><a href="#SetOperation-436"><span class="linenos">436</span></a>            <span class="n">op</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="vm">__class__</span><span class="p">,</span>
-</span><span id="SetOperation-437"><a href="#SetOperation-437"><span class="linenos">437</span></a>            <span class="n">left</span><span class="o">=</span><span class="n">left</span><span class="o">.</span><span class="n">name</span><span class="p">,</span>
-</span><span id="SetOperation-438"><a href="#SetOperation-438"><span class="linenos">438</span></a>            <span class="n">right</span><span class="o">=</span><span class="n">right</span><span class="o">.</span><span class="n">name</span><span class="p">,</span>
-</span><span id="SetOperation-439"><a href="#SetOperation-439"><span class="linenos">439</span></a>            <span class="n">distinct</span><span class="o">=</span><span class="nb">bool</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">&quot;distinct&quot;</span><span class="p">)),</span>
-</span><span id="SetOperation-440"><a href="#SetOperation-440"><span class="linenos">440</span></a>        <span class="p">)</span>
-</span><span id="SetOperation-441"><a href="#SetOperation-441"><span class="linenos">441</span></a>
-</span><span id="SetOperation-442"><a href="#SetOperation-442"><span class="linenos">442</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">left</span><span class="p">)</span>
-</span><span id="SetOperation-443"><a href="#SetOperation-443"><span class="linenos">443</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">right</span><span class="p">)</span>
-</span><span id="SetOperation-444"><a href="#SetOperation-444"><span class="linenos">444</span></a>
-</span><span id="SetOperation-445"><a href="#SetOperation-445"><span class="linenos">445</span></a>        <span class="n">limit</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">&quot;limit&quot;</span><span class="p">)</span>
+            <div class="pdoc-code codehilite"><pre><span></span><span id="SetOperation-412"><a href="#SetOperation-412"><span class="linenos">412</span></a><span class="k">class</span> <span class="nc">SetOperation</span><span class="p">(</span><span class="n">Step</span><span class="p">):</span>
+</span><span id="SetOperation-413"><a href="#SetOperation-413"><span class="linenos">413</span></a>    <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span>
+</span><span id="SetOperation-414"><a href="#SetOperation-414"><span class="linenos">414</span></a>        <span class="bp">self</span><span class="p">,</span>
+</span><span id="SetOperation-415"><a href="#SetOperation-415"><span class="linenos">415</span></a>        <span class="n">op</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Type</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="SetOperation-416"><a href="#SetOperation-416"><span class="linenos">416</span></a>        <span class="n">left</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="kc">None</span><span class="p">,</span>
+</span><span id="SetOperation-417"><a href="#SetOperation-417"><span class="linenos">417</span></a>        <span class="n">right</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="kc">None</span><span class="p">,</span>
+</span><span id="SetOperation-418"><a href="#SetOperation-418"><span class="linenos">418</span></a>        <span class="n">distinct</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span><span class="p">,</span>
+</span><span id="SetOperation-419"><a href="#SetOperation-419"><span class="linenos">419</span></a>    <span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
+</span><span id="SetOperation-420"><a href="#SetOperation-420"><span class="linenos">420</span></a>        <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>
+</span><span id="SetOperation-421"><a href="#SetOperation-421"><span class="linenos">421</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">op</span> <span class="o">=</span> <span class="n">op</span>
+</span><span id="SetOperation-422"><a href="#SetOperation-422"><span class="linenos">422</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">left</span> <span class="o">=</span> <span class="n">left</span>
+</span><span id="SetOperation-423"><a href="#SetOperation-423"><span class="linenos">423</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">right</span> <span class="o">=</span> <span class="n">right</span>
+</span><span id="SetOperation-424"><a href="#SetOperation-424"><span class="linenos">424</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">distinct</span> <span class="o">=</span> <span class="n">distinct</span>
+</span><span id="SetOperation-425"><a href="#SetOperation-425"><span class="linenos">425</span></a>
+</span><span id="SetOperation-426"><a href="#SetOperation-426"><span class="linenos">426</span></a>    <span class="nd">@classmethod</span>
+</span><span id="SetOperation-427"><a href="#SetOperation-427"><span class="linenos">427</span></a>    <span class="k">def</span> <span class="nf">from_expression</span><span class="p">(</span>
+</span><span id="SetOperation-428"><a href="#SetOperation-428"><span class="linenos">428</span></a>        <span class="bp">cls</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">ctes</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="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Step</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span>
+</span><span id="SetOperation-429"><a href="#SetOperation-429"><span class="linenos">429</span></a>    <span class="p">)</span> <span class="o">-&gt;</span> <span class="n">SetOperation</span><span class="p">:</span>
+</span><span id="SetOperation-430"><a href="#SetOperation-430"><span class="linenos">430</span></a>        <span class="k">assert</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="SetOperation-431"><a href="#SetOperation-431"><span class="linenos">431</span></a>
+</span><span id="SetOperation-432"><a href="#SetOperation-432"><span class="linenos">432</span></a>        <span class="n">left</span> <span class="o">=</span> <span class="n">Step</span><span class="o">.</span><span class="n">from_expression</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">left</span><span class="p">,</span> <span class="n">ctes</span><span class="p">)</span>
+</span><span id="SetOperation-433"><a href="#SetOperation-433"><span class="linenos">433</span></a>        <span class="c1"># SELECT 1 UNION SELECT 2  &lt;-- these subqueries don&#39;t have names</span>
+</span><span id="SetOperation-434"><a href="#SetOperation-434"><span class="linenos">434</span></a>        <span class="n">left</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">left</span><span class="o">.</span><span class="n">name</span> <span class="ow">or</span> <span class="s2">&quot;left&quot;</span>
+</span><span id="SetOperation-435"><a href="#SetOperation-435"><span class="linenos">435</span></a>        <span class="n">right</span> <span class="o">=</span> <span class="n">Step</span><span class="o">.</span><span class="n">from_expression</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">right</span><span class="p">,</span> <span class="n">ctes</span><span class="p">)</span>
+</span><span id="SetOperation-436"><a href="#SetOperation-436"><span class="linenos">436</span></a>        <span class="n">right</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">right</span><span class="o">.</span><span class="n">name</span> <span class="ow">or</span> <span class="s2">&quot;right&quot;</span>
+</span><span id="SetOperation-437"><a href="#SetOperation-437"><span class="linenos">437</span></a>        <span class="n">step</span> <span class="o">=</span> <span class="bp">cls</span><span class="p">(</span>
+</span><span id="SetOperation-438"><a href="#SetOperation-438"><span class="linenos">438</span></a>            <span class="n">op</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="vm">__class__</span><span class="p">,</span>
+</span><span id="SetOperation-439"><a href="#SetOperation-439"><span class="linenos">439</span></a>            <span class="n">left</span><span class="o">=</span><span class="n">left</span><span class="o">.</span><span class="n">name</span><span class="p">,</span>
+</span><span id="SetOperation-440"><a href="#SetOperation-440"><span class="linenos">440</span></a>            <span class="n">right</span><span class="o">=</span><span class="n">right</span><span class="o">.</span><span class="n">name</span><span class="p">,</span>
+</span><span id="SetOperation-441"><a href="#SetOperation-441"><span class="linenos">441</span></a>            <span class="n">distinct</span><span class="o">=</span><span class="nb">bool</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">&quot;distinct&quot;</span><span class="p">)),</span>
+</span><span id="SetOperation-442"><a href="#SetOperation-442"><span class="linenos">442</span></a>        <span class="p">)</span>
+</span><span id="SetOperation-443"><a href="#SetOperation-443"><span class="linenos">443</span></a>
+</span><span id="SetOperation-444"><a href="#SetOperation-444"><span class="linenos">444</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">left</span><span class="p">)</span>
+</span><span id="SetOperation-445"><a href="#SetOperation-445"><span class="linenos">445</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">right</span><span class="p">)</span>
 </span><span id="SetOperation-446"><a href="#SetOperation-446"><span class="linenos">446</span></a>
-</span><span id="SetOperation-447"><a href="#SetOperation-447"><span class="linenos">447</span></a>        <span class="k">if</span> <span class="n">limit</span><span class="p">:</span>
-</span><span id="SetOperation-448"><a href="#SetOperation-448"><span class="linenos">448</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">limit</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">limit</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="s2">&quot;expression&quot;</span><span class="p">))</span>
-</span><span id="SetOperation-449"><a href="#SetOperation-449"><span class="linenos">449</span></a>
-</span><span id="SetOperation-450"><a href="#SetOperation-450"><span class="linenos">450</span></a>        <span class="k">return</span> <span class="n">step</span>
+</span><span id="SetOperation-447"><a href="#SetOperation-447"><span class="linenos">447</span></a>        <span class="n">limit</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">&quot;limit&quot;</span><span class="p">)</span>
+</span><span id="SetOperation-448"><a href="#SetOperation-448"><span class="linenos">448</span></a>
+</span><span id="SetOperation-449"><a href="#SetOperation-449"><span class="linenos">449</span></a>        <span class="k">if</span> <span class="n">limit</span><span class="p">:</span>
+</span><span id="SetOperation-450"><a href="#SetOperation-450"><span class="linenos">450</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">limit</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">limit</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="s2">&quot;expression&quot;</span><span class="p">))</span>
 </span><span id="SetOperation-451"><a href="#SetOperation-451"><span class="linenos">451</span></a>
-</span><span id="SetOperation-452"><a href="#SetOperation-452"><span class="linenos">452</span></a>    <span class="k">def</span> <span class="nf">_to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">indent</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
-</span><span id="SetOperation-453"><a href="#SetOperation-453"><span class="linenos">453</span></a>        <span class="n">lines</span> <span class="o">=</span> <span class="p">[]</span>
-</span><span id="SetOperation-454"><a href="#SetOperation-454"><span class="linenos">454</span></a>        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">distinct</span><span class="p">:</span>
-</span><span id="SetOperation-455"><a href="#SetOperation-455"><span class="linenos">455</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Distinct: </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">distinct</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
-</span><span id="SetOperation-456"><a href="#SetOperation-456"><span class="linenos">456</span></a>        <span class="k">return</span> <span class="n">lines</span>
-</span><span id="SetOperation-457"><a href="#SetOperation-457"><span class="linenos">457</span></a>
-</span><span id="SetOperation-458"><a href="#SetOperation-458"><span class="linenos">458</span></a>    <span class="nd">@property</span>
-</span><span id="SetOperation-459"><a href="#SetOperation-459"><span class="linenos">459</span></a>    <span class="k">def</span> <span class="nf">type_name</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
-</span><span id="SetOperation-460"><a href="#SetOperation-460"><span class="linenos">460</span></a>        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">op</span><span class="o">.</span><span class="vm">__name__</span>
+</span><span id="SetOperation-452"><a href="#SetOperation-452"><span class="linenos">452</span></a>        <span class="k">return</span> <span class="n">step</span>
+</span><span id="SetOperation-453"><a href="#SetOperation-453"><span class="linenos">453</span></a>
+</span><span id="SetOperation-454"><a href="#SetOperation-454"><span class="linenos">454</span></a>    <span class="k">def</span> <span class="nf">_to_s</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">indent</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="nb">str</span><span class="p">]:</span>
+</span><span id="SetOperation-455"><a href="#SetOperation-455"><span class="linenos">455</span></a>        <span class="n">lines</span> <span class="o">=</span> <span class="p">[]</span>
+</span><span id="SetOperation-456"><a href="#SetOperation-456"><span class="linenos">456</span></a>        <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">distinct</span><span class="p">:</span>
+</span><span id="SetOperation-457"><a href="#SetOperation-457"><span class="linenos">457</span></a>            <span class="n">lines</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="sa">f</span><span class="s2">&quot;</span><span class="si">{</span><span class="n">indent</span><span class="si">}</span><span class="s2">Distinct: </span><span class="si">{</span><span class="bp">self</span><span class="o">.</span><span class="n">distinct</span><span class="si">}</span><span class="s2">&quot;</span><span class="p">)</span>
+</span><span id="SetOperation-458"><a href="#SetOperation-458"><span class="linenos">458</span></a>        <span class="k">return</span> <span class="n">lines</span>
+</span><span id="SetOperation-459"><a href="#SetOperation-459"><span class="linenos">459</span></a>
+</span><span id="SetOperation-460"><a href="#SetOperation-460"><span class="linenos">460</span></a>    <span class="nd">@property</span>
+</span><span id="SetOperation-461"><a href="#SetOperation-461"><span class="linenos">461</span></a>    <span class="k">def</span> <span class="nf">type_name</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
+</span><span id="SetOperation-462"><a href="#SetOperation-462"><span class="linenos">462</span></a>        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">op</span><span class="o">.</span><span class="vm">__name__</span>
 </span></pre></div>
 
 
@@ -2037,18 +2056,18 @@ Projections:</li>
 
     </div>
     <a class="headerlink" href="#SetOperation.__init__"></a>
-            <div class="pdoc-code codehilite"><pre><span></span><span id="SetOperation.__init__-411"><a href="#SetOperation.__init__-411"><span class="linenos">411</span></a>    <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span>
-</span><span id="SetOperation.__init__-412"><a href="#SetOperation.__init__-412"><span class="linenos">412</span></a>        <span class="bp">self</span><span class="p">,</span>
-</span><span id="SetOperation.__init__-413"><a href="#SetOperation.__init__-413"><span class="linenos">413</span></a>        <span class="n">op</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Type</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="SetOperation.__init__-414"><a href="#SetOperation.__init__-414"><span class="linenos">414</span></a>        <span class="n">left</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="kc">None</span><span class="p">,</span>
-</span><span id="SetOperation.__init__-415"><a href="#SetOperation.__init__-415"><span class="linenos">415</span></a>        <span class="n">right</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="kc">None</span><span class="p">,</span>
-</span><span id="SetOperation.__init__-416"><a href="#SetOperation.__init__-416"><span class="linenos">416</span></a>        <span class="n">distinct</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span><span class="p">,</span>
-</span><span id="SetOperation.__init__-417"><a href="#SetOperation.__init__-417"><span class="linenos">417</span></a>    <span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
-</span><span id="SetOperation.__init__-418"><a href="#SetOperation.__init__-418"><span class="linenos">418</span></a>        <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>
-</span><span id="SetOperation.__init__-419"><a href="#SetOperation.__init__-419"><span class="linenos">419</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">op</span> <span class="o">=</span> <span class="n">op</span>
-</span><span id="SetOperation.__init__-420"><a href="#SetOperation.__init__-420"><span class="linenos">420</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">left</span> <span class="o">=</span> <span class="n">left</span>
-</span><span id="SetOperation.__init__-421"><a href="#SetOperation.__init__-421"><span class="linenos">421</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">right</span> <span class="o">=</span> <span class="n">right</span>
-</span><span id="SetOperation.__init__-422"><a href="#SetOperation.__init__-422"><span class="linenos">422</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">distinct</span> <span class="o">=</span> <span class="n">distinct</span>
+            <div class="pdoc-code codehilite"><pre><span></span><span id="SetOperation.__init__-413"><a href="#SetOperation.__init__-413"><span class="linenos">413</span></a>    <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span>
+</span><span id="SetOperation.__init__-414"><a href="#SetOperation.__init__-414"><span class="linenos">414</span></a>        <span class="bp">self</span><span class="p">,</span>
+</span><span id="SetOperation.__init__-415"><a href="#SetOperation.__init__-415"><span class="linenos">415</span></a>        <span class="n">op</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Type</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="SetOperation.__init__-416"><a href="#SetOperation.__init__-416"><span class="linenos">416</span></a>        <span class="n">left</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="kc">None</span><span class="p">,</span>
+</span><span id="SetOperation.__init__-417"><a href="#SetOperation.__init__-417"><span class="linenos">417</span></a>        <span class="n">right</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="kc">None</span><span class="p">,</span>
+</span><span id="SetOperation.__init__-418"><a href="#SetOperation.__init__-418"><span class="linenos">418</span></a>        <span class="n">distinct</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span><span class="p">,</span>
+</span><span id="SetOperation.__init__-419"><a href="#SetOperation.__init__-419"><span class="linenos">419</span></a>    <span class="p">)</span> <span class="o">-&gt;</span> <span class="kc">None</span><span class="p">:</span>
+</span><span id="SetOperation.__init__-420"><a href="#SetOperation.__init__-420"><span class="linenos">420</span></a>        <span class="nb">super</span><span class="p">()</span><span class="o">.</span><span class="fm">__init__</span><span class="p">()</span>
+</span><span id="SetOperation.__init__-421"><a href="#SetOperation.__init__-421"><span class="linenos">421</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">op</span> <span class="o">=</span> <span class="n">op</span>
+</span><span id="SetOperation.__init__-422"><a href="#SetOperation.__init__-422"><span class="linenos">422</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">left</span> <span class="o">=</span> <span class="n">left</span>
+</span><span id="SetOperation.__init__-423"><a href="#SetOperation.__init__-423"><span class="linenos">423</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">right</span> <span class="o">=</span> <span class="n">right</span>
+</span><span id="SetOperation.__init__-424"><a href="#SetOperation.__init__-424"><span class="linenos">424</span></a>        <span class="bp">self</span><span class="o">.</span><span class="n">distinct</span> <span class="o">=</span> <span class="n">distinct</span>
 </span></pre></div>
 
 
@@ -2105,39 +2124,39 @@ Projections:</li>
                     <div class="decorator">@classmethod</div>
 
         <span class="def">def</span>
-        <span class="name">from_expression</span><span class="signature pdoc-code multiline">(<span class="param">	<span class="bp">cls</span>,</span><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">ctes</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n"><a href="#Step">Step</a></span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span></span><span class="return-annotation">) -> <span class="n"><a href="#Step">Step</a></span>:</span></span>
+        <span class="name">from_expression</span><span class="signature pdoc-code multiline">(<span class="param">	<span class="bp">cls</span>,</span><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">ctes</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n"><a href="#Step">Step</a></span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span></span><span class="return-annotation">) -> <span class="n"><a href="#SetOperation">SetOperation</a></span>:</span></span>
 
                 <label class="view-source-button" for="SetOperation.from_expression-view-source"><span>View Source</span></label>
 
     </div>
     <a class="headerlink" href="#SetOperation.from_expression"></a>
-            <div class="pdoc-code codehilite"><pre><span></span><span id="SetOperation.from_expression-424"><a href="#SetOperation.from_expression-424"><span class="linenos">424</span></a>    <span class="nd">@classmethod</span>
-</span><span id="SetOperation.from_expression-425"><a href="#SetOperation.from_expression-425"><span class="linenos">425</span></a>    <span class="k">def</span> <span class="nf">from_expression</span><span class="p">(</span>
-</span><span id="SetOperation.from_expression-426"><a href="#SetOperation.from_expression-426"><span class="linenos">426</span></a>        <span class="bp">cls</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">ctes</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="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Step</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span>
-</span><span id="SetOperation.from_expression-427"><a href="#SetOperation.from_expression-427"><span class="linenos">427</span></a>    <span class="p">)</span> <span class="o">-&gt;</span> <span class="n">Step</span><span class="p">:</span>
-</span><span id="SetOperation.from_expression-428"><a href="#SetOperation.from_expression-428"><span class="linenos">428</span></a>        <span class="k">assert</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="SetOperation.from_expression-429"><a href="#SetOperation.from_expression-429"><span class="linenos">429</span></a>
-</span><span id="SetOperation.from_expression-430"><a href="#SetOperation.from_expression-430"><span class="linenos">430</span></a>        <span class="n">left</span> <span class="o">=</span> <span class="n">Step</span><span class="o">.</span><span class="n">from_expression</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">left</span><span class="p">,</span> <span class="n">ctes</span><span class="p">)</span>
-</span><span id="SetOperation.from_expression-431"><a href="#SetOperation.from_expression-431"><span class="linenos">431</span></a>        <span class="c1"># SELECT 1 UNION SELECT 2  &lt;-- these subqueries don&#39;t have names</span>
-</span><span id="SetOperation.from_expression-432"><a href="#SetOperation.from_expression-432"><span class="linenos">432</span></a>        <span class="n">left</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">left</span><span class="o">.</span><span class="n">name</span> <span class="ow">or</span> <span class="s2">&quot;left&quot;</span>
-</span><span id="SetOperation.from_expression-433"><a href="#SetOperation.from_expression-433"><span class="linenos">433</span></a>        <span class="n">right</span> <span class="o">=</span> <span class="n">Step</span><span class="o">.</span><span class="n">from_expression</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">right</span><span class="p">,</span> <span class="n">ctes</span><span class="p">)</span>
-</span><span id="SetOperation.from_expression-434"><a href="#SetOperation.from_expression-434"><span class="linenos">434</span></a>        <span class="n">right</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">right</span><span class="o">.</span><span class="n">name</span> <span class="ow">or</span> <span class="s2">&quot;right&quot;</span>
-</span><span id="SetOperation.from_expression-435"><a href="#SetOperation.from_expression-435"><span class="linenos">435</span></a>        <span class="n">step</span> <span class="o">=</span> <span class="bp">cls</span><span class="p">(</span>
-</span><span id="SetOperation.from_expression-436"><a href="#SetOperation.from_expression-436"><span class="linenos">436</span></a>            <span class="n">op</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="vm">__class__</span><span class="p">,</span>
-</span><span id="SetOperation.from_expression-437"><a href="#SetOperation.from_expression-437"><span class="linenos">437</span></a>            <span class="n">left</span><span class="o">=</span><span class="n">left</span><span class="o">.</span><span class="n">name</span><span class="p">,</span>
-</span><span id="SetOperation.from_expression-438"><a href="#SetOperation.from_expression-438"><span class="linenos">438</span></a>            <span class="n">right</span><span class="o">=</span><span class="n">right</span><span class="o">.</span><span class="n">name</span><span class="p">,</span>
-</span><span id="SetOperation.from_expression-439"><a href="#SetOperation.from_expression-439"><span class="linenos">439</span></a>            <span class="n">distinct</span><span class="o">=</span><span class="nb">bool</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">&quot;distinct&quot;</span><span class="p">)),</span>
-</span><span id="SetOperation.from_expression-440"><a href="#SetOperation.from_expression-440"><span class="linenos">440</span></a>        <span class="p">)</span>
-</span><span id="SetOperation.from_expression-441"><a href="#SetOperation.from_expression-441"><span class="linenos">441</span></a>
-</span><span id="SetOperation.from_expression-442"><a href="#SetOperation.from_expression-442"><span class="linenos">442</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">left</span><span class="p">)</span>
-</span><span id="SetOperation.from_expression-443"><a href="#SetOperation.from_expression-443"><span class="linenos">443</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">right</span><span class="p">)</span>
-</span><span id="SetOperation.from_expression-444"><a href="#SetOperation.from_expression-444"><span class="linenos">444</span></a>
-</span><span id="SetOperation.from_expression-445"><a href="#SetOperation.from_expression-445"><span class="linenos">445</span></a>        <span class="n">limit</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">&quot;limit&quot;</span><span class="p">)</span>
+            <div class="pdoc-code codehilite"><pre><span></span><span id="SetOperation.from_expression-426"><a href="#SetOperation.from_expression-426"><span class="linenos">426</span></a>    <span class="nd">@classmethod</span>
+</span><span id="SetOperation.from_expression-427"><a href="#SetOperation.from_expression-427"><span class="linenos">427</span></a>    <span class="k">def</span> <span class="nf">from_expression</span><span class="p">(</span>
+</span><span id="SetOperation.from_expression-428"><a href="#SetOperation.from_expression-428"><span class="linenos">428</span></a>        <span class="bp">cls</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">ctes</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="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n">Step</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span>
+</span><span id="SetOperation.from_expression-429"><a href="#SetOperation.from_expression-429"><span class="linenos">429</span></a>    <span class="p">)</span> <span class="o">-&gt;</span> <span class="n">SetOperation</span><span class="p">:</span>
+</span><span id="SetOperation.from_expression-430"><a href="#SetOperation.from_expression-430"><span class="linenos">430</span></a>        <span class="k">assert</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="SetOperation.from_expression-431"><a href="#SetOperation.from_expression-431"><span class="linenos">431</span></a>
+</span><span id="SetOperation.from_expression-432"><a href="#SetOperation.from_expression-432"><span class="linenos">432</span></a>        <span class="n">left</span> <span class="o">=</span> <span class="n">Step</span><span class="o">.</span><span class="n">from_expression</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">left</span><span class="p">,</span> <span class="n">ctes</span><span class="p">)</span>
+</span><span id="SetOperation.from_expression-433"><a href="#SetOperation.from_expression-433"><span class="linenos">433</span></a>        <span class="c1"># SELECT 1 UNION SELECT 2  &lt;-- these subqueries don&#39;t have names</span>
+</span><span id="SetOperation.from_expression-434"><a href="#SetOperation.from_expression-434"><span class="linenos">434</span></a>        <span class="n">left</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">left</span><span class="o">.</span><span class="n">name</span> <span class="ow">or</span> <span class="s2">&quot;left&quot;</span>
+</span><span id="SetOperation.from_expression-435"><a href="#SetOperation.from_expression-435"><span class="linenos">435</span></a>        <span class="n">right</span> <span class="o">=</span> <span class="n">Step</span><span class="o">.</span><span class="n">from_expression</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">right</span><span class="p">,</span> <span class="n">ctes</span><span class="p">)</span>
+</span><span id="SetOperation.from_expression-436"><a href="#SetOperation.from_expression-436"><span class="linenos">436</span></a>        <span class="n">right</span><span class="o">.</span><span class="n">name</span> <span class="o">=</span> <span class="n">right</span><span class="o">.</span><span class="n">name</span> <span class="ow">or</span> <span class="s2">&quot;right&quot;</span>
+</span><span id="SetOperation.from_expression-437"><a href="#SetOperation.from_expression-437"><span class="linenos">437</span></a>        <span class="n">step</span> <span class="o">=</span> <span class="bp">cls</span><span class="p">(</span>
+</span><span id="SetOperation.from_expression-438"><a href="#SetOperation.from_expression-438"><span class="linenos">438</span></a>            <span class="n">op</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="vm">__class__</span><span class="p">,</span>
+</span><span id="SetOperation.from_expression-439"><a href="#SetOperation.from_expression-439"><span class="linenos">439</span></a>            <span class="n">left</span><span class="o">=</span><span class="n">left</span><span class="o">.</span><span class="n">name</span><span class="p">,</span>
+</span><span id="SetOperation.from_expression-440"><a href="#SetOperation.from_expression-440"><span class="linenos">440</span></a>            <span class="n">right</span><span class="o">=</span><span class="n">right</span><span class="o">.</span><span class="n">name</span><span class="p">,</span>
+</span><span id="SetOperation.from_expression-441"><a href="#SetOperation.from_expression-441"><span class="linenos">441</span></a>            <span class="n">distinct</span><span class="o">=</span><span class="nb">bool</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">&quot;distinct&quot;</span><span class="p">)),</span>
+</span><span id="SetOperation.from_expression-442"><a href="#SetOperation.from_expression-442"><span class="linenos">442</span></a>        <span class="p">)</span>
+</span><span id="SetOperation.from_expression-443"><a href="#SetOperation.from_expression-443"><span class="linenos">443</span></a>
+</span><span id="SetOperation.from_expression-444"><a href="#SetOperation.from_expression-444"><span class="linenos">444</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">left</span><span class="p">)</span>
+</span><span id="SetOperation.from_expression-445"><a href="#SetOperation.from_expression-445"><span class="linenos">445</span></a>        <span class="n">step</span><span class="o">.</span><span class="n">add_dependency</span><span class="p">(</span><span class="n">right</span><span class="p">)</span>
 </span><span id="SetOperation.from_expression-446"><a href="#SetOperation.from_expression-446"><span class="linenos">446</span></a>
-</span><span id="SetOperation.from_expression-447"><a href="#SetOperation.from_expression-447"><span class="linenos">447</span></a>        <span class="k">if</span> <span class="n">limit</span><span class="p">:</span>
-</span><span id="SetOperation.from_expression-448"><a href="#SetOperation.from_expression-448"><span class="linenos">448</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">limit</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">limit</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="s2">&quot;expression&quot;</span><span class="p">))</span>
-</span><span id="SetOperation.from_expression-449"><a href="#SetOperation.from_expression-449"><span class="linenos">449</span></a>
-</span><span id="SetOperation.from_expression-450"><a href="#SetOperation.from_expression-450"><span class="linenos">450</span></a>        <span class="k">return</span> <span class="n">step</span>
+</span><span id="SetOperation.from_expression-447"><a href="#SetOperation.from_expression-447"><span class="linenos">447</span></a>        <span class="n">limit</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">&quot;limit&quot;</span><span class="p">)</span>
+</span><span id="SetOperation.from_expression-448"><a href="#SetOperation.from_expression-448"><span class="linenos">448</span></a>
+</span><span id="SetOperation.from_expression-449"><a href="#SetOperation.from_expression-449"><span class="linenos">449</span></a>        <span class="k">if</span> <span class="n">limit</span><span class="p">:</span>
+</span><span id="SetOperation.from_expression-450"><a href="#SetOperation.from_expression-450"><span class="linenos">450</span></a>            <span class="n">step</span><span class="o">.</span><span class="n">limit</span> <span class="o">=</span> <span class="nb">int</span><span class="p">(</span><span class="n">limit</span><span class="o">.</span><span class="n">text</span><span class="p">(</span><span class="s2">&quot;expression&quot;</span><span class="p">))</span>
+</span><span id="SetOperation.from_expression-451"><a href="#SetOperation.from_expression-451"><span class="linenos">451</span></a>
+</span><span id="SetOperation.from_expression-452"><a href="#SetOperation.from_expression-452"><span class="linenos">452</span></a>        <span class="k">return</span> <span class="n">step</span>
 </span></pre></div>
 
 
@@ -2211,9 +2230,9 @@ Projections:</li>
 
     </div>
     <a class="headerlink" href="#SetOperation.type_name"></a>
-            <div class="pdoc-code codehilite"><pre><span></span><span id="SetOperation.type_name-458"><a href="#SetOperation.type_name-458"><span class="linenos">458</span></a>    <span class="nd">@property</span>
-</span><span id="SetOperation.type_name-459"><a href="#SetOperation.type_name-459"><span class="linenos">459</span></a>    <span class="k">def</span> <span class="nf">type_name</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
-</span><span id="SetOperation.type_name-460"><a href="#SetOperation.type_name-460"><span class="linenos">460</span></a>        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">op</span><span class="o">.</span><span class="vm">__name__</span>
+            <div class="pdoc-code codehilite"><pre><span></span><span id="SetOperation.type_name-460"><a href="#SetOperation.type_name-460"><span class="linenos">460</span></a>    <span class="nd">@property</span>
+</span><span id="SetOperation.type_name-461"><a href="#SetOperation.type_name-461"><span class="linenos">461</span></a>    <span class="k">def</span> <span class="nf">type_name</span><span class="p">(</span><span class="bp">self</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="nb">str</span><span class="p">:</span>
+</span><span id="SetOperation.type_name-462"><a href="#SetOperation.type_name-462"><span class="linenos">462</span></a>        <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">op</span><span class="o">.</span><span class="vm">__name__</span>
 </span></pre></div>