diff options
Diffstat (limited to 'docs/sqlglot/optimizer')
| -rw-r--r-- | docs/sqlglot/optimizer/annotate_types.html | 6 | ||||
| -rw-r--r-- | docs/sqlglot/optimizer/eliminate_subqueries.html | 124 | ||||
| -rw-r--r-- | docs/sqlglot/optimizer/merge_subqueries.html | 2 | ||||
| -rw-r--r-- | docs/sqlglot/optimizer/optimizer.html | 2 | ||||
| -rw-r--r-- | docs/sqlglot/optimizer/qualify_columns.html | 1545 | ||||
| -rw-r--r-- | docs/sqlglot/optimizer/qualify_tables.html | 376 | ||||
| -rw-r--r-- | docs/sqlglot/optimizer/scope.html | 1006 |
7 files changed, 1560 insertions, 1501 deletions
diff --git a/docs/sqlglot/optimizer/annotate_types.html b/docs/sqlglot/optimizer/annotate_types.html index 18b70a5..c93a68c 100644 --- a/docs/sqlglot/optimizer/annotate_types.html +++ b/docs/sqlglot/optimizer/annotate_types.html @@ -906,7 +906,7 @@ <div class="attr variable"> <span class="name">TYPE_TO_EXPRESSIONS</span><span class="annotation">: Dict[<a href="../expressions.html#DataType.Type">sqlglot.expressions.DataType.Type</a>, Set[Type[<a href="../expressions.html#Expression">sqlglot.expressions.Expression</a>]]]</span> = <input id="TypeAnnotator.TYPE_TO_EXPRESSIONS-view-value" class="view-value-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> - <label class="view-value-button pdoc-button" for="TypeAnnotator.TYPE_TO_EXPRESSIONS-view-value"></label><span class="default_value">{<Type.BIGINT: 'BIGINT'>: {<class '<a href="../expressions.html#Length">sqlglot.expressions.Length</a>'>, <class '<a href="../expressions.html#ApproxDistinct">sqlglot.expressions.ApproxDistinct</a>'>, <class '<a href="../expressions.html#ArraySize">sqlglot.expressions.ArraySize</a>'>, <class '<a href="../expressions.html#Count">sqlglot.expressions.Count</a>'>}, <Type.BOOLEAN: 'BOOLEAN'>: {<class '<a href="../expressions.html#Between">sqlglot.expressions.Between</a>'>, <class '<a href="../expressions.html#Boolean">sqlglot.expressions.Boolean</a>'>, <class '<a href="../expressions.html#In">sqlglot.expressions.In</a>'>, <class '<a href="../expressions.html#RegexpLike">sqlglot.expressions.RegexpLike</a>'>}, <Type.DATE: 'DATE'>: {<class '<a href="../expressions.html#DateSub">sqlglot.expressions.DateSub</a>'>, <class '<a href="../expressions.html#TsOrDsToDate">sqlglot.expressions.TsOrDsToDate</a>'>, <class '<a href="../expressions.html#Date">sqlglot.expressions.Date</a>'>, <class '<a href="../expressions.html#DateAdd">sqlglot.expressions.DateAdd</a>'>, <class '<a href="../expressions.html#DateTrunc">sqlglot.expressions.DateTrunc</a>'>, <class '<a href="../expressions.html#DiToDate">sqlglot.expressions.DiToDate</a>'>, <class '<a href="../expressions.html#DateStrToDate">sqlglot.expressions.DateStrToDate</a>'>, <class '<a href="../expressions.html#DateFromParts">sqlglot.expressions.DateFromParts</a>'>, <class '<a href="../expressions.html#StrToDate">sqlglot.expressions.StrToDate</a>'>, <class '<a href="../expressions.html#CurrentDate">sqlglot.expressions.CurrentDate</a>'>, <class '<a href="../expressions.html#TimeStrToDate">sqlglot.expressions.TimeStrToDate</a>'>}, <Type.DATETIME: 'DATETIME'>: {<class '<a href="../expressions.html#DatetimeAdd">sqlglot.expressions.DatetimeAdd</a>'>, <class '<a href="../expressions.html#CurrentDatetime">sqlglot.expressions.CurrentDatetime</a>'>, <class '<a href="../expressions.html#DatetimeSub">sqlglot.expressions.DatetimeSub</a>'>}, <Type.DOUBLE: 'DOUBLE'>: {<class '<a href="../expressions.html#Log2">sqlglot.expressions.Log2</a>'>, <class '<a href="../expressions.html#Avg">sqlglot.expressions.Avg</a>'>, <class '<a href="../expressions.html#Log10">sqlglot.expressions.Log10</a>'>, <class '<a href="../expressions.html#Log">sqlglot.expressions.Log</a>'>, <class '<a href="../expressions.html#Round">sqlglot.expressions.Round</a>'>, <class '<a href="../expressions.html#Ln">sqlglot.expressions.Ln</a>'>, <class '<a href="../expressions.html#Variance">sqlglot.expressions.Variance</a>'>, <class '<a href="../expressions.html#Pow">sqlglot.expressions.Pow</a>'>, <class '<a href="../expressions.html#VariancePop">sqlglot.expressions.VariancePop</a>'>, <class '<a href="../expressions.html#StddevSamp">sqlglot.expressions.StddevSamp</a>'>, <class '<a href="../expressions.html#StddevPop">sqlglot.expressions.StddevPop</a>'>, <class '<a href="../expressions.html#Stddev">sqlglot.expressions.Stddev</a>'>, <class '<a href="../expressions.html#Sqrt">sqlglot.expressions.Sqrt</a>'>, <class '<a href="../expressions.html#Quantile">sqlglot.expressions.Quantile</a>'>, <class '<a href="../expressions.html#Exp">sqlglot.expressions.Exp</a>'>, <class '<a href="../expressions.html#SafeDivide">sqlglot.expressions.SafeDivide</a>'>, <class '<a href="../expressions.html#ApproxQuantile">sqlglot.expressions.ApproxQuantile</a>'>}, <Type.INT: 'INT'>: {<class '<a href="../expressions.html#DateDiff">sqlglot.expressions.DateDiff</a>'>, <class '<a href="../expressions.html#TsOrDiToDi">sqlglot.expressions.TsOrDiToDi</a>'>, <class '<a href="../expressions.html#TimeDiff">sqlglot.expressions.TimeDiff</a>'>, <class '<a href="../expressions.html#Ceil">sqlglot.expressions.Ceil</a>'>, <class '<a href="../expressions.html#Levenshtein">sqlglot.expressions.Levenshtein</a>'>, <class '<a href="../expressions.html#DateToDi">sqlglot.expressions.DateToDi</a>'>, <class '<a href="../expressions.html#Extract">sqlglot.expressions.Extract</a>'>, <class '<a href="../expressions.html#DatetimeDiff">sqlglot.expressions.DatetimeDiff</a>'>, <class '<a href="../expressions.html#TimestampDiff">sqlglot.expressions.TimestampDiff</a>'>, <class '<a href="../expressions.html#Floor">sqlglot.expressions.Floor</a>'>, <class '<a href="../expressions.html#StrPosition">sqlglot.expressions.StrPosition</a>'>}, <Type.TIMESTAMP: 'TIMESTAMP'>: {<class '<a href="../expressions.html#TimestampSub">sqlglot.expressions.TimestampSub</a>'>, <class '<a href="../expressions.html#TimeSub">sqlglot.expressions.TimeSub</a>'>, <class '<a href="../expressions.html#TimeAdd">sqlglot.expressions.TimeAdd</a>'>, <class '<a href="../expressions.html#TimestampAdd">sqlglot.expressions.TimestampAdd</a>'>, <class '<a href="../expressions.html#CurrentTimestamp">sqlglot.expressions.CurrentTimestamp</a>'>, <class '<a href="../expressions.html#CurrentTime">sqlglot.expressions.CurrentTime</a>'>, <class '<a href="../expressions.html#StrToTime">sqlglot.expressions.StrToTime</a>'>, <class '<a href="../expressions.html#UnixToTime">sqlglot.expressions.UnixToTime</a>'>, <class '<a href="../expressions.html#TimeStrToTime">sqlglot.expressions.TimeStrToTime</a>'>}, <Type.TINYINT: 'TINYINT'>: {<class '<a href="../expressions.html#Week">sqlglot.expressions.Week</a>'>, <class '<a href="../expressions.html#Year">sqlglot.expressions.Year</a>'>, <class '<a href="../expressions.html#Day">sqlglot.expressions.Day</a>'>, <class '<a href="../expressions.html#Month">sqlglot.expressions.Month</a>'>}, <Type.VARCHAR: 'VARCHAR'>: {<class '<a href="../expressions.html#GroupConcat">sqlglot.expressions.GroupConcat</a>'>, <class '<a href="../expressions.html#ArrayConcat">sqlglot.expressions.ArrayConcat</a>'>, <class '<a href="../expressions.html#Substring">sqlglot.expressions.Substring</a>'>, <class '<a href="../expressions.html#TimeToTimeStr">sqlglot.expressions.TimeToTimeStr</a>'>, <class '<a href="../expressions.html#ConcatWs">sqlglot.expressions.ConcatWs</a>'>, <class '<a href="../expressions.html#TimeToStr">sqlglot.expressions.TimeToStr</a>'>, <class '<a href="../expressions.html#Concat">sqlglot.expressions.Concat</a>'>, <class '<a href="../expressions.html#TsOrDsToDateStr">sqlglot.expressions.TsOrDsToDateStr</a>'>, <class '<a href="../expressions.html#SafeConcat">sqlglot.expressions.SafeConcat</a>'>, <class '<a href="../expressions.html#Upper">sqlglot.expressions.Upper</a>'>, <class '<a href="../expressions.html#DateToDateStr">sqlglot.expressions.DateToDateStr</a>'>, <class '<a href="../expressions.html#Trim">sqlglot.expressions.Trim</a>'>, <class '<a href="../expressions.html#UnixToTimeStr">sqlglot.expressions.UnixToTimeStr</a>'>, <class '<a href="../expressions.html#Initcap">sqlglot.expressions.Initcap</a>'>, <class '<a href="../expressions.html#Lower">sqlglot.expressions.Lower</a>'>, <class '<a href="../expressions.html#UnixToStr">sqlglot.expressions.UnixToStr</a>'>}}</span> + <label class="view-value-button pdoc-button" for="TypeAnnotator.TYPE_TO_EXPRESSIONS-view-value"></label><span class="default_value">{<Type.BIGINT: 'BIGINT'>: {<class '<a href="../expressions.html#ArraySize">sqlglot.expressions.ArraySize</a>'>, <class '<a href="../expressions.html#Count">sqlglot.expressions.Count</a>'>, <class '<a href="../expressions.html#ApproxDistinct">sqlglot.expressions.ApproxDistinct</a>'>, <class '<a href="../expressions.html#Length">sqlglot.expressions.Length</a>'>}, <Type.BOOLEAN: 'BOOLEAN'>: {<class '<a href="../expressions.html#RegexpLike">sqlglot.expressions.RegexpLike</a>'>, <class '<a href="../expressions.html#In">sqlglot.expressions.In</a>'>, <class '<a href="../expressions.html#Between">sqlglot.expressions.Between</a>'>, <class '<a href="../expressions.html#Boolean">sqlglot.expressions.Boolean</a>'>}, <Type.DATE: 'DATE'>: {<class '<a href="../expressions.html#CurrentDate">sqlglot.expressions.CurrentDate</a>'>, <class '<a href="../expressions.html#TimeStrToDate">sqlglot.expressions.TimeStrToDate</a>'>, <class '<a href="../expressions.html#DiToDate">sqlglot.expressions.DiToDate</a>'>, <class '<a href="../expressions.html#TsOrDsToDate">sqlglot.expressions.TsOrDsToDate</a>'>, <class '<a href="../expressions.html#DateTrunc">sqlglot.expressions.DateTrunc</a>'>, <class '<a href="../expressions.html#DateFromParts">sqlglot.expressions.DateFromParts</a>'>, <class '<a href="../expressions.html#Date">sqlglot.expressions.Date</a>'>, <class '<a href="../expressions.html#DateSub">sqlglot.expressions.DateSub</a>'>, <class '<a href="../expressions.html#StrToDate">sqlglot.expressions.StrToDate</a>'>, <class '<a href="../expressions.html#DateAdd">sqlglot.expressions.DateAdd</a>'>, <class '<a href="../expressions.html#DateStrToDate">sqlglot.expressions.DateStrToDate</a>'>}, <Type.DATETIME: 'DATETIME'>: {<class '<a href="../expressions.html#DatetimeAdd">sqlglot.expressions.DatetimeAdd</a>'>, <class '<a href="../expressions.html#DatetimeSub">sqlglot.expressions.DatetimeSub</a>'>, <class '<a href="../expressions.html#CurrentDatetime">sqlglot.expressions.CurrentDatetime</a>'>}, <Type.DOUBLE: 'DOUBLE'>: {<class '<a href="../expressions.html#Log">sqlglot.expressions.Log</a>'>, <class '<a href="../expressions.html#Sqrt">sqlglot.expressions.Sqrt</a>'>, <class '<a href="../expressions.html#Ln">sqlglot.expressions.Ln</a>'>, <class '<a href="../expressions.html#ApproxQuantile">sqlglot.expressions.ApproxQuantile</a>'>, <class '<a href="../expressions.html#Log2">sqlglot.expressions.Log2</a>'>, <class '<a href="../expressions.html#SafeDivide">sqlglot.expressions.SafeDivide</a>'>, <class '<a href="../expressions.html#Quantile">sqlglot.expressions.Quantile</a>'>, <class '<a href="../expressions.html#Round">sqlglot.expressions.Round</a>'>, <class '<a href="../expressions.html#Variance">sqlglot.expressions.Variance</a>'>, <class '<a href="../expressions.html#VariancePop">sqlglot.expressions.VariancePop</a>'>, <class '<a href="../expressions.html#Stddev">sqlglot.expressions.Stddev</a>'>, <class '<a href="../expressions.html#StddevSamp">sqlglot.expressions.StddevSamp</a>'>, <class '<a href="../expressions.html#Avg">sqlglot.expressions.Avg</a>'>, <class '<a href="../expressions.html#StddevPop">sqlglot.expressions.StddevPop</a>'>, <class '<a href="../expressions.html#Pow">sqlglot.expressions.Pow</a>'>, <class '<a href="../expressions.html#Log10">sqlglot.expressions.Log10</a>'>, <class '<a href="../expressions.html#Exp">sqlglot.expressions.Exp</a>'>}, <Type.INT: 'INT'>: {<class '<a href="../expressions.html#DatetimeDiff">sqlglot.expressions.DatetimeDiff</a>'>, <class '<a href="../expressions.html#Extract">sqlglot.expressions.Extract</a>'>, <class '<a href="../expressions.html#TimestampDiff">sqlglot.expressions.TimestampDiff</a>'>, <class '<a href="../expressions.html#StrPosition">sqlglot.expressions.StrPosition</a>'>, <class '<a href="../expressions.html#TsOrDiToDi">sqlglot.expressions.TsOrDiToDi</a>'>, <class '<a href="../expressions.html#Levenshtein">sqlglot.expressions.Levenshtein</a>'>, <class '<a href="../expressions.html#Floor">sqlglot.expressions.Floor</a>'>, <class '<a href="../expressions.html#DateDiff">sqlglot.expressions.DateDiff</a>'>, <class '<a href="../expressions.html#TimeDiff">sqlglot.expressions.TimeDiff</a>'>, <class '<a href="../expressions.html#DateToDi">sqlglot.expressions.DateToDi</a>'>, <class '<a href="../expressions.html#Ceil">sqlglot.expressions.Ceil</a>'>}, <Type.TIMESTAMP: 'TIMESTAMP'>: {<class '<a href="../expressions.html#CurrentTimestamp">sqlglot.expressions.CurrentTimestamp</a>'>, <class '<a href="../expressions.html#StrToTime">sqlglot.expressions.StrToTime</a>'>, <class '<a href="../expressions.html#TimestampSub">sqlglot.expressions.TimestampSub</a>'>, <class '<a href="../expressions.html#UnixToTime">sqlglot.expressions.UnixToTime</a>'>, <class '<a href="../expressions.html#TimeSub">sqlglot.expressions.TimeSub</a>'>, <class '<a href="../expressions.html#CurrentTime">sqlglot.expressions.CurrentTime</a>'>, <class '<a href="../expressions.html#TimestampAdd">sqlglot.expressions.TimestampAdd</a>'>, <class '<a href="../expressions.html#TimeAdd">sqlglot.expressions.TimeAdd</a>'>, <class '<a href="../expressions.html#TimeStrToTime">sqlglot.expressions.TimeStrToTime</a>'>}, <Type.TINYINT: 'TINYINT'>: {<class '<a href="../expressions.html#Year">sqlglot.expressions.Year</a>'>, <class '<a href="../expressions.html#Week">sqlglot.expressions.Week</a>'>, <class '<a href="../expressions.html#Month">sqlglot.expressions.Month</a>'>, <class '<a href="../expressions.html#Day">sqlglot.expressions.Day</a>'>}, <Type.VARCHAR: 'VARCHAR'>: {<class '<a href="../expressions.html#UnixToStr">sqlglot.expressions.UnixToStr</a>'>, <class '<a href="../expressions.html#TimeToTimeStr">sqlglot.expressions.TimeToTimeStr</a>'>, <class '<a href="../expressions.html#ConcatWs">sqlglot.expressions.ConcatWs</a>'>, <class '<a href="../expressions.html#Initcap">sqlglot.expressions.Initcap</a>'>, <class '<a href="../expressions.html#Concat">sqlglot.expressions.Concat</a>'>, <class '<a href="../expressions.html#Substring">sqlglot.expressions.Substring</a>'>, <class '<a href="../expressions.html#SafeConcat">sqlglot.expressions.SafeConcat</a>'>, <class '<a href="../expressions.html#Lower">sqlglot.expressions.Lower</a>'>, <class '<a href="../expressions.html#TimeToStr">sqlglot.expressions.TimeToStr</a>'>, <class '<a href="../expressions.html#TsOrDsToDateStr">sqlglot.expressions.TsOrDsToDateStr</a>'>, <class '<a href="../expressions.html#Trim">sqlglot.expressions.Trim</a>'>, <class '<a href="../expressions.html#Upper">sqlglot.expressions.Upper</a>'>, <class '<a href="../expressions.html#ArrayConcat">sqlglot.expressions.ArrayConcat</a>'>, <class '<a href="../expressions.html#DateToDateStr">sqlglot.expressions.DateToDateStr</a>'>, <class '<a href="../expressions.html#UnixToTimeStr">sqlglot.expressions.UnixToTimeStr</a>'>, <class '<a href="../expressions.html#GroupConcat">sqlglot.expressions.GroupConcat</a>'>}}</span> </div> @@ -919,7 +919,7 @@ <div class="attr variable"> <span class="name">ANNOTATORS</span><span class="annotation">: Dict</span> = <input id="TypeAnnotator.ANNOTATORS-view-value" class="view-value-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> - <label class="view-value-button pdoc-button" for="TypeAnnotator.ANNOTATORS-view-value"></label><span class="default_value">{<class '<a href="../expressions.html#Alias">sqlglot.expressions.Alias</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#BitwiseNot">sqlglot.expressions.BitwiseNot</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#Neg">sqlglot.expressions.Neg</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#Not">sqlglot.expressions.Not</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#Paren">sqlglot.expressions.Paren</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#Unary">sqlglot.expressions.Unary</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#Add">sqlglot.expressions.Add</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#And">sqlglot.expressions.And</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#ArrayContained">sqlglot.expressions.ArrayContained</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#ArrayContains">sqlglot.expressions.ArrayContains</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#ArrayOverlaps">sqlglot.expressions.ArrayOverlaps</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#Binary">sqlglot.expressions.Binary</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#BitwiseAnd">sqlglot.expressions.BitwiseAnd</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#BitwiseLeftShift">sqlglot.expressions.BitwiseLeftShift</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#BitwiseOr">sqlglot.expressions.BitwiseOr</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#BitwiseRightShift">sqlglot.expressions.BitwiseRightShift</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#BitwiseXor">sqlglot.expressions.BitwiseXor</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#Collate">sqlglot.expressions.Collate</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#Connector">sqlglot.expressions.Connector</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#DPipe">sqlglot.expressions.DPipe</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#Distance">sqlglot.expressions.Distance</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#Div">sqlglot.expressions.Div</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#Dot">sqlglot.expressions.Dot</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#EQ">sqlglot.expressions.EQ</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#Escape">sqlglot.expressions.Escape</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#GT">sqlglot.expressions.GT</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#GTE">sqlglot.expressions.GTE</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#Glob">sqlglot.expressions.Glob</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#ILike">sqlglot.expressions.ILike</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#ILikeAny">sqlglot.expressions.ILikeAny</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#IntDiv">sqlglot.expressions.IntDiv</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#Is">sqlglot.expressions.Is</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#JSONArrayContains">sqlglot.expressions.JSONArrayContains</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#JSONBContains">sqlglot.expressions.JSONBContains</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#JSONBExtract">sqlglot.expressions.JSONBExtract</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#JSONBExtractScalar">sqlglot.expressions.JSONBExtractScalar</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#JSONExtract">sqlglot.expressions.JSONExtract</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#JSONExtractScalar">sqlglot.expressions.JSONExtractScalar</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#Kwarg">sqlglot.expressions.Kwarg</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#LT">sqlglot.expressions.LT</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#LTE">sqlglot.expressions.LTE</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#Like">sqlglot.expressions.Like</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#LikeAny">sqlglot.expressions.LikeAny</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#Mod">sqlglot.expressions.Mod</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#Mul">sqlglot.expressions.Mul</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#NEQ">sqlglot.expressions.NEQ</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#NullSafeEQ">sqlglot.expressions.NullSafeEQ</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a href="../expressions.html#NullSafeNEQ">sqlglot.expressions.NullSafeNEQ</a>'>: <function TypeAnnotator.<dictcomp>.<lambda>>, <class '<a 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'<a href="../expressions.html#TimeSub">sqlglot.expressions.TimeSub</a>'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class '<a href="../expressions.html#CurrentTime">sqlglot.expressions.CurrentTime</a>'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class '<a href="../expressions.html#TimestampAdd">sqlglot.expressions.TimestampAdd</a>'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class '<a href="../expressions.html#TimeAdd">sqlglot.expressions.TimeAdd</a>'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class '<a href="../expressions.html#TimeStrToTime">sqlglot.expressions.TimeStrToTime</a>'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class '<a href="../expressions.html#Year">sqlglot.expressions.Year</a>'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class '<a href="../expressions.html#Week">sqlglot.expressions.Week</a>'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class '<a 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href="../expressions.html#ArrayConcat">sqlglot.expressions.ArrayConcat</a>'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class '<a href="../expressions.html#DateToDateStr">sqlglot.expressions.DateToDateStr</a>'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class '<a href="../expressions.html#UnixToTimeStr">sqlglot.expressions.UnixToTimeStr</a>'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class '<a href="../expressions.html#GroupConcat">sqlglot.expressions.GroupConcat</a>'>: <function _annotate_with_type_lambda.<locals>.<lambda>>, <class '<a href="../expressions.html#Anonymous">sqlglot.expressions.Anonymous</a>'>: <function TypeAnnotator.<lambda>>, <class '<a href="../expressions.html#Cast">sqlglot.expressions.Cast</a>'>: <function TypeAnnotator.<lambda>>, <class '<a href="../expressions.html#Case">sqlglot.expressions.Case</a>'>: <function TypeAnnotator.<lambda>>, <class '<a href="../expressions.html#Coalesce">sqlglot.expressions.Coalesce</a>'>: <function TypeAnnotator.<lambda>>, <class '<a href="../expressions.html#DataType">sqlglot.expressions.DataType</a>'>: <function TypeAnnotator.<lambda>>, <class '<a href="../expressions.html#If">sqlglot.expressions.If</a>'>: <function TypeAnnotator.<lambda>>, <class '<a href="../expressions.html#Interval">sqlglot.expressions.Interval</a>'>: <function TypeAnnotator.<lambda>>, <class '<a href="../expressions.html#Least">sqlglot.expressions.Least</a>'>: <function TypeAnnotator.<lambda>>, <class '<a href="../expressions.html#Literal">sqlglot.expressions.Literal</a>'>: <function TypeAnnotator.<lambda>>, <class '<a href="../expressions.html#Map">sqlglot.expressions.Map</a>'>: <function TypeAnnotator.<lambda>>, <class '<a href="../expressions.html#Max">sqlglot.expressions.Max</a>'>: <function TypeAnnotator.<lambda>>, <class '<a href="../expressions.html#Min">sqlglot.expressions.Min</a>'>: <function TypeAnnotator.<lambda>>, <class '<a href="../expressions.html#Null">sqlglot.expressions.Null</a>'>: <function TypeAnnotator.<lambda>>, <class '<a href="../expressions.html#Sum">sqlglot.expressions.Sum</a>'>: <function TypeAnnotator.<lambda>>, <class '<a href="../expressions.html#TryCast">sqlglot.expressions.TryCast</a>'>: <function TypeAnnotator.<lambda>>, <class '<a href="../expressions.html#VarMap">sqlglot.expressions.VarMap</a>'>: <function TypeAnnotator.<lambda>>}</span> </div> @@ -932,7 +932,7 @@ <div class="attr variable"> <span class="name">COERCES_TO</span><span class="annotation">: Dict[<a href="../expressions.html#DataType.Type">sqlglot.expressions.DataType.Type</a>, Set[<a href="../expressions.html#DataType.Type">sqlglot.expressions.DataType.Type</a>]]</span> = <input id="TypeAnnotator.COERCES_TO-view-value" class="view-value-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> - <label class="view-value-button pdoc-button" for="TypeAnnotator.COERCES_TO-view-value"></label><span class="default_value">{<Type.TEXT: 'TEXT'>: set(), <Type.NVARCHAR: 'NVARCHAR'>: {<Type.TEXT: 'TEXT'>}, <Type.VARCHAR: 'VARCHAR'>: {<Type.TEXT: 'TEXT'>, <Type.NVARCHAR: 'NVARCHAR'>}, <Type.NCHAR: 'NCHAR'>: {<Type.TEXT: 'TEXT'>, <Type.VARCHAR: 'VARCHAR'>, <Type.NVARCHAR: 'NVARCHAR'>}, <Type.CHAR: 'CHAR'>: {<Type.NCHAR: 'NCHAR'>, <Type.TEXT: 'TEXT'>, <Type.VARCHAR: 'VARCHAR'>, <Type.NVARCHAR: 'NVARCHAR'>}, <Type.DOUBLE: 'DOUBLE'>: set(), <Type.FLOAT: 'FLOAT'>: {<Type.DOUBLE: 'DOUBLE'>}, <Type.DECIMAL: 'DECIMAL'>: {<Type.FLOAT: 'FLOAT'>, <Type.DOUBLE: 'DOUBLE'>}, <Type.BIGINT: 'BIGINT'>: {<Type.FLOAT: 'FLOAT'>, <Type.DECIMAL: 'DECIMAL'>, <Type.DOUBLE: 'DOUBLE'>}, <Type.INT: 'INT'>: {<Type.FLOAT: 'FLOAT'>, <Type.DECIMAL: 'DECIMAL'>, <Type.DOUBLE: 'DOUBLE'>, <Type.BIGINT: 'BIGINT'>}, <Type.SMALLINT: 'SMALLINT'>: {<Type.BIGINT: 'BIGINT'>, <Type.FLOAT: 'FLOAT'>, <Type.INT: 'INT'>, <Type.DECIMAL: 'DECIMAL'>, <Type.DOUBLE: 'DOUBLE'>}, <Type.TINYINT: 'TINYINT'>: {<Type.SMALLINT: 'SMALLINT'>, <Type.BIGINT: 'BIGINT'>, <Type.FLOAT: 'FLOAT'>, <Type.INT: 'INT'>, <Type.DECIMAL: 'DECIMAL'>, <Type.DOUBLE: 'DOUBLE'>}, <Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>: set(), <Type.TIMESTAMPTZ: 'TIMESTAMPTZ'>: {<Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>}, <Type.TIMESTAMP: 'TIMESTAMP'>: {<Type.TIMESTAMPTZ: 'TIMESTAMPTZ'>, <Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>}, <Type.DATETIME: 'DATETIME'>: {<Type.TIMESTAMP: 'TIMESTAMP'>, <Type.TIMESTAMPTZ: 'TIMESTAMPTZ'>, <Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>}, <Type.DATE: 'DATE'>: {<Type.TIMESTAMP: 'TIMESTAMP'>, <Type.DATETIME: 'DATETIME'>, <Type.TIMESTAMPTZ: 'TIMESTAMPTZ'>, <Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>}}</span> + <label class="view-value-button pdoc-button" for="TypeAnnotator.COERCES_TO-view-value"></label><span class="default_value">{<Type.TEXT: 'TEXT'>: set(), <Type.NVARCHAR: 'NVARCHAR'>: {<Type.TEXT: 'TEXT'>}, <Type.VARCHAR: 'VARCHAR'>: {<Type.NVARCHAR: 'NVARCHAR'>, <Type.TEXT: 'TEXT'>}, <Type.NCHAR: 'NCHAR'>: {<Type.NVARCHAR: 'NVARCHAR'>, <Type.VARCHAR: 'VARCHAR'>, <Type.TEXT: 'TEXT'>}, <Type.CHAR: 'CHAR'>: {<Type.NVARCHAR: 'NVARCHAR'>, <Type.VARCHAR: 'VARCHAR'>, <Type.TEXT: 'TEXT'>, <Type.NCHAR: 'NCHAR'>}, <Type.DOUBLE: 'DOUBLE'>: set(), <Type.FLOAT: 'FLOAT'>: {<Type.DOUBLE: 'DOUBLE'>}, <Type.DECIMAL: 'DECIMAL'>: {<Type.DOUBLE: 'DOUBLE'>, <Type.FLOAT: 'FLOAT'>}, <Type.BIGINT: 'BIGINT'>: {<Type.DOUBLE: 'DOUBLE'>, <Type.FLOAT: 'FLOAT'>, <Type.DECIMAL: 'DECIMAL'>}, <Type.INT: 'INT'>: {<Type.DOUBLE: 'DOUBLE'>, <Type.BIGINT: 'BIGINT'>, <Type.FLOAT: 'FLOAT'>, <Type.DECIMAL: 'DECIMAL'>}, <Type.SMALLINT: 'SMALLINT'>: {<Type.BIGINT: 'BIGINT'>, <Type.FLOAT: 'FLOAT'>, <Type.DECIMAL: 'DECIMAL'>, <Type.INT: 'INT'>, <Type.DOUBLE: 'DOUBLE'>}, <Type.TINYINT: 'TINYINT'>: {<Type.BIGINT: 'BIGINT'>, <Type.SMALLINT: 'SMALLINT'>, <Type.FLOAT: 'FLOAT'>, <Type.DECIMAL: 'DECIMAL'>, <Type.INT: 'INT'>, <Type.DOUBLE: 'DOUBLE'>}, <Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>: set(), <Type.TIMESTAMPTZ: 'TIMESTAMPTZ'>: {<Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>}, <Type.TIMESTAMP: 'TIMESTAMP'>: {<Type.TIMESTAMPTZ: 'TIMESTAMPTZ'>, <Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>}, <Type.DATETIME: 'DATETIME'>: {<Type.TIMESTAMPTZ: 'TIMESTAMPTZ'>, <Type.TIMESTAMP: 'TIMESTAMP'>, <Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>}, <Type.DATE: 'DATE'>: {<Type.TIMESTAMPTZ: 'TIMESTAMPTZ'>, <Type.TIMESTAMP: 'TIMESTAMP'>, <Type.TIMESTAMPLTZ: 'TIMESTAMPLTZ'>, <Type.DATETIME: 'DATETIME'>}}</span> </div> diff --git a/docs/sqlglot/optimizer/eliminate_subqueries.html b/docs/sqlglot/optimizer/eliminate_subqueries.html index cbb33c2..ede02fe 100644 --- a/docs/sqlglot/optimizer/eliminate_subqueries.html +++ b/docs/sqlglot/optimizer/eliminate_subqueries.html @@ -194,69 +194,71 @@ </span><span id="L-136"><a href="#L-136"><span class="linenos">136</span></a> </span><span id="L-137"><a href="#L-137"><span class="linenos">137</span></a> </span><span id="L-138"><a href="#L-138"><span class="linenos">138</span></a><span class="k">def</span> <span class="nf">_eliminate_derived_table</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">):</span> -</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a> <span class="c1"># This ensures we don't drop the "pivot" arg from a pivoted subquery</span> -</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">pivots</span><span class="p">:</span> -</span><span id="L-141"><a href="#L-141"><span class="linenos">141</span></a> <span class="k">return</span> <span class="kc">None</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="n">parent</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span> -</span><span id="L-144"><a href="#L-144"><span class="linenos">144</span></a> <span class="n">name</span><span class="p">,</span> <span class="n">cte</span> <span class="o">=</span> <span class="n">_new_cte</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">)</span> -</span><span id="L-145"><a href="#L-145"><span class="linenos">145</span></a> -</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a> <span class="n">table</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">alias_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">table_</span><span class="p">(</span><span class="n">name</span><span class="p">),</span> <span class="n">alias</span><span class="o">=</span><span class="n">parent</span><span class="o">.</span><span class="n">alias</span> <span class="ow">or</span> <span class="n">name</span><span class="p">)</span> -</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a> <span class="n">table</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="n">parent</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">))</span> -</span><span id="L-148"><a href="#L-148"><span class="linenos">148</span></a> -</span><span id="L-149"><a href="#L-149"><span class="linenos">149</span></a> <span class="n">parent</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">table</span><span class="p">)</span> -</span><span id="L-150"><a href="#L-150"><span class="linenos">150</span></a> <span class="k">return</span> <span class="n">cte</span> -</span><span id="L-151"><a href="#L-151"><span class="linenos">151</span></a> -</span><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a> -</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a><span class="k">def</span> <span class="nf">_eliminate_cte</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">):</span> -</span><span id="L-154"><a href="#L-154"><span class="linenos">154</span></a> <span class="n">parent</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span> -</span><span id="L-155"><a href="#L-155"><span class="linenos">155</span></a> <span class="n">name</span><span class="p">,</span> <span class="n">cte</span> <span class="o">=</span> <span class="n">_new_cte</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">)</span> -</span><span id="L-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">with_</span> <span class="o">=</span> <span class="n">parent</span><span class="o">.</span><span class="n">parent</span> -</span><span id="L-158"><a href="#L-158"><span class="linenos">158</span></a> <span class="n">parent</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span> -</span><span id="L-159"><a href="#L-159"><span class="linenos">159</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">with_</span><span class="o">.</span><span class="n">expressions</span><span class="p">:</span> -</span><span id="L-160"><a href="#L-160"><span class="linenos">160</span></a> <span class="n">with_</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span> -</span><span id="L-161"><a href="#L-161"><span class="linenos">161</span></a> -</span><span id="L-162"><a href="#L-162"><span class="linenos">162</span></a> <span class="c1"># Rename references to this CTE</span> -</span><span id="L-163"><a href="#L-163"><span class="linenos">163</span></a> <span class="k">for</span> <span class="n">child_scope</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">traverse</span><span class="p">():</span> -</span><span id="L-164"><a href="#L-164"><span class="linenos">164</span></a> <span class="k">for</span> <span class="n">table</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">child_scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> -</span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a> <span class="k">if</span> <span class="n">source</span> <span class="ow">is</span> <span class="n">scope</span><span class="p">:</span> -</span><span id="L-166"><a href="#L-166"><span class="linenos">166</span></a> <span class="n">new_table</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">alias_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">table_</span><span class="p">(</span><span class="n">name</span><span class="p">),</span> <span class="n">alias</span><span class="o">=</span><span class="n">table</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> -</span><span id="L-167"><a href="#L-167"><span class="linenos">167</span></a> <span class="n">table</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">new_table</span><span class="p">)</span> -</span><span id="L-168"><a href="#L-168"><span class="linenos">168</span></a> -</span><span id="L-169"><a href="#L-169"><span class="linenos">169</span></a> <span class="k">return</span> <span class="n">cte</span> +</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a> <span class="c1"># This makes sure that we don't:</span> +</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a> <span class="c1"># - drop the "pivot" arg from a pivoted subquery</span> +</span><span id="L-141"><a href="#L-141"><span class="linenos">141</span></a> <span class="c1"># - eliminate a lateral correlated subquery</span> +</span><span id="L-142"><a href="#L-142"><span class="linenos">142</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">pivots</span> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Lateral</span><span class="p">):</span> +</span><span id="L-143"><a href="#L-143"><span class="linenos">143</span></a> <span class="k">return</span> <span class="kc">None</span> +</span><span id="L-144"><a href="#L-144"><span class="linenos">144</span></a> +</span><span id="L-145"><a href="#L-145"><span class="linenos">145</span></a> <span class="n">parent</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span> +</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a> <span class="n">name</span><span class="p">,</span> <span class="n">cte</span> <span class="o">=</span> <span class="n">_new_cte</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">)</span> +</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a> +</span><span id="L-148"><a href="#L-148"><span class="linenos">148</span></a> <span class="n">table</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">alias_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">table_</span><span class="p">(</span><span class="n">name</span><span class="p">),</span> <span class="n">alias</span><span class="o">=</span><span class="n">parent</span><span class="o">.</span><span class="n">alias</span> <span class="ow">or</span> <span class="n">name</span><span class="p">)</span> +</span><span id="L-149"><a href="#L-149"><span class="linenos">149</span></a> <span class="n">table</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="n">parent</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">))</span> +</span><span id="L-150"><a href="#L-150"><span class="linenos">150</span></a> +</span><span id="L-151"><a href="#L-151"><span class="linenos">151</span></a> <span class="n">parent</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">table</span><span class="p">)</span> +</span><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a> <span class="k">return</span> <span class="n">cte</span> +</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a> +</span><span id="L-154"><a href="#L-154"><span class="linenos">154</span></a> +</span><span id="L-155"><a href="#L-155"><span class="linenos">155</span></a><span class="k">def</span> <span class="nf">_eliminate_cte</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">):</span> +</span><span id="L-156"><a href="#L-156"><span class="linenos">156</span></a> <span class="n">parent</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span> +</span><span id="L-157"><a href="#L-157"><span class="linenos">157</span></a> <span class="n">name</span><span class="p">,</span> <span class="n">cte</span> <span class="o">=</span> <span class="n">_new_cte</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">)</span> +</span><span id="L-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="n">with_</span> <span class="o">=</span> <span class="n">parent</span><span class="o">.</span><span class="n">parent</span> +</span><span id="L-160"><a href="#L-160"><span class="linenos">160</span></a> <span class="n">parent</span><span class="o">.</span><span class="n">pop</span><span class="p">()</span> +</span><span id="L-161"><a href="#L-161"><span class="linenos">161</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">with_</span><span class="o">.</span><span class="n">expressions</span><span class="p">:</span> +</span><span id="L-162"><a href="#L-162"><span class="linenos">162</span></a> <span class="n">with_</span><span class="o">.</span><span class="n">pop</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="c1"># Rename references to this CTE</span> +</span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a> <span class="k">for</span> <span class="n">child_scope</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">traverse</span><span class="p">():</span> +</span><span id="L-166"><a href="#L-166"><span class="linenos">166</span></a> <span class="k">for</span> <span class="n">table</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">child_scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> +</span><span id="L-167"><a href="#L-167"><span class="linenos">167</span></a> <span class="k">if</span> <span class="n">source</span> <span class="ow">is</span> <span class="n">scope</span><span class="p">:</span> +</span><span id="L-168"><a href="#L-168"><span class="linenos">168</span></a> <span class="n">new_table</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">alias_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">table_</span><span class="p">(</span><span class="n">name</span><span class="p">),</span> <span class="n">alias</span><span class="o">=</span><span class="n">table</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> +</span><span id="L-169"><a href="#L-169"><span class="linenos">169</span></a> <span class="n">table</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">new_table</span><span class="p">)</span> </span><span id="L-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><span id="L-172"><a href="#L-172"><span class="linenos">172</span></a><span class="k">def</span> <span class="nf">_new_cte</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">):</span> -</span><span id="L-173"><a href="#L-173"><span class="linenos">173</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-174"><a href="#L-174"><span class="linenos">174</span></a><span class="sd"> Returns:</span> -</span><span id="L-175"><a href="#L-175"><span class="linenos">175</span></a><span class="sd"> tuple of (name, cte)</span> -</span><span id="L-176"><a href="#L-176"><span class="linenos">176</span></a><span class="sd"> where `name` is a new name for this CTE in the root scope and `cte` is a new CTE instance.</span> -</span><span id="L-177"><a href="#L-177"><span class="linenos">177</span></a><span class="sd"> If this CTE duplicates an existing CTE, `cte` will be None.</span> -</span><span id="L-178"><a href="#L-178"><span class="linenos">178</span></a><span class="sd"> """</span> -</span><span id="L-179"><a href="#L-179"><span class="linenos">179</span></a> <span class="n">duplicate_cte_alias</span> <span class="o">=</span> <span class="n">existing_ctes</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-180"><a href="#L-180"><span class="linenos">180</span></a> <span class="n">parent</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span> -</span><span id="L-181"><a href="#L-181"><span class="linenos">181</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">parent</span><span class="o">.</span><span class="n">alias</span> -</span><span id="L-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="k">if</span> <span class="ow">not</span> <span class="n">name</span><span class="p">:</span> -</span><span id="L-184"><a href="#L-184"><span class="linenos">184</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">find_new_name</span><span class="p">(</span><span class="n">taken</span><span class="o">=</span><span class="n">taken</span><span class="p">,</span> <span class="n">base</span><span class="o">=</span><span class="s2">"cte"</span><span class="p">)</span> -</span><span id="L-185"><a href="#L-185"><span class="linenos">185</span></a> -</span><span id="L-186"><a href="#L-186"><span class="linenos">186</span></a> <span class="k">if</span> <span class="n">duplicate_cte_alias</span><span class="p">:</span> -</span><span id="L-187"><a href="#L-187"><span class="linenos">187</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">duplicate_cte_alias</span> -</span><span id="L-188"><a href="#L-188"><span class="linenos">188</span></a> <span class="k">elif</span> <span class="n">taken</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">name</span><span class="p">):</span> -</span><span id="L-189"><a href="#L-189"><span class="linenos">189</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">find_new_name</span><span class="p">(</span><span class="n">taken</span><span class="o">=</span><span class="n">taken</span><span class="p">,</span> <span class="n">base</span><span class="o">=</span><span class="n">name</span><span class="p">)</span> -</span><span id="L-190"><a href="#L-190"><span class="linenos">190</span></a> -</span><span id="L-191"><a href="#L-191"><span class="linenos">191</span></a> <span class="n">taken</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">scope</span> +</span><span id="L-171"><a href="#L-171"><span class="linenos">171</span></a> <span class="k">return</span> <span class="n">cte</span> +</span><span id="L-172"><a href="#L-172"><span class="linenos">172</span></a> +</span><span id="L-173"><a href="#L-173"><span class="linenos">173</span></a> +</span><span id="L-174"><a href="#L-174"><span class="linenos">174</span></a><span class="k">def</span> <span class="nf">_new_cte</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">existing_ctes</span><span class="p">,</span> <span class="n">taken</span><span class="p">):</span> +</span><span id="L-175"><a href="#L-175"><span class="linenos">175</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-176"><a href="#L-176"><span class="linenos">176</span></a><span class="sd"> Returns:</span> +</span><span id="L-177"><a href="#L-177"><span class="linenos">177</span></a><span class="sd"> tuple of (name, cte)</span> +</span><span id="L-178"><a href="#L-178"><span class="linenos">178</span></a><span class="sd"> where `name` is a new name for this CTE in the root scope and `cte` is a new CTE instance.</span> +</span><span id="L-179"><a href="#L-179"><span class="linenos">179</span></a><span class="sd"> If this CTE duplicates an existing CTE, `cte` will be None.</span> +</span><span id="L-180"><a href="#L-180"><span class="linenos">180</span></a><span class="sd"> """</span> +</span><span id="L-181"><a href="#L-181"><span class="linenos">181</span></a> <span class="n">duplicate_cte_alias</span> <span class="o">=</span> <span class="n">existing_ctes</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">)</span> +</span><span id="L-182"><a href="#L-182"><span class="linenos">182</span></a> <span class="n">parent</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">parent</span> +</span><span id="L-183"><a href="#L-183"><span class="linenos">183</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">parent</span><span class="o">.</span><span class="n">alias</span> +</span><span id="L-184"><a href="#L-184"><span class="linenos">184</span></a> +</span><span id="L-185"><a href="#L-185"><span class="linenos">185</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">name</span><span class="p">:</span> +</span><span id="L-186"><a href="#L-186"><span class="linenos">186</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">find_new_name</span><span class="p">(</span><span class="n">taken</span><span class="o">=</span><span class="n">taken</span><span class="p">,</span> <span class="n">base</span><span class="o">=</span><span class="s2">"cte"</span><span class="p">)</span> +</span><span id="L-187"><a href="#L-187"><span class="linenos">187</span></a> +</span><span id="L-188"><a href="#L-188"><span class="linenos">188</span></a> <span class="k">if</span> <span class="n">duplicate_cte_alias</span><span class="p">:</span> +</span><span id="L-189"><a href="#L-189"><span class="linenos">189</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">duplicate_cte_alias</span> +</span><span id="L-190"><a href="#L-190"><span class="linenos">190</span></a> <span class="k">elif</span> <span class="n">taken</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">name</span><span class="p">):</span> +</span><span id="L-191"><a href="#L-191"><span class="linenos">191</span></a> <span class="n">name</span> <span class="o">=</span> <span class="n">find_new_name</span><span class="p">(</span><span class="n">taken</span><span class="o">=</span><span class="n">taken</span><span class="p">,</span> <span class="n">base</span><span class="o">=</span><span class="n">name</span><span class="p">)</span> </span><span id="L-192"><a href="#L-192"><span class="linenos">192</span></a> -</span><span id="L-193"><a href="#L-193"><span class="linenos">193</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">duplicate_cte_alias</span><span class="p">:</span> -</span><span id="L-194"><a href="#L-194"><span class="linenos">194</span></a> <span class="n">existing_ctes</span><span class="p">[</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">]</span> <span class="o">=</span> <span class="n">name</span> -</span><span id="L-195"><a href="#L-195"><span class="linenos">195</span></a> <span class="n">cte</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">CTE</span><span class="p">(</span> -</span><span id="L-196"><a href="#L-196"><span class="linenos">196</span></a> <span class="n">this</span><span class="o">=</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> -</span><span id="L-197"><a href="#L-197"><span class="linenos">197</span></a> <span class="n">alias</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">name</span><span class="p">)),</span> -</span><span id="L-198"><a href="#L-198"><span class="linenos">198</span></a> <span class="p">)</span> -</span><span id="L-199"><a href="#L-199"><span class="linenos">199</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-200"><a href="#L-200"><span class="linenos">200</span></a> <span class="n">cte</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-201"><a href="#L-201"><span class="linenos">201</span></a> <span class="k">return</span> <span class="n">name</span><span class="p">,</span> <span class="n">cte</span> +</span><span id="L-193"><a href="#L-193"><span class="linenos">193</span></a> <span class="n">taken</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">scope</span> +</span><span id="L-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="ow">not</span> <span class="n">duplicate_cte_alias</span><span class="p">:</span> +</span><span id="L-196"><a href="#L-196"><span class="linenos">196</span></a> <span class="n">existing_ctes</span><span class="p">[</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">]</span> <span class="o">=</span> <span class="n">name</span> +</span><span id="L-197"><a href="#L-197"><span class="linenos">197</span></a> <span class="n">cte</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">CTE</span><span class="p">(</span> +</span><span id="L-198"><a href="#L-198"><span class="linenos">198</span></a> <span class="n">this</span><span class="o">=</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> +</span><span id="L-199"><a href="#L-199"><span class="linenos">199</span></a> <span class="n">alias</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">name</span><span class="p">)),</span> +</span><span id="L-200"><a href="#L-200"><span class="linenos">200</span></a> <span class="p">)</span> +</span><span id="L-201"><a href="#L-201"><span class="linenos">201</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-202"><a href="#L-202"><span class="linenos">202</span></a> <span class="n">cte</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-203"><a href="#L-203"><span class="linenos">203</span></a> <span class="k">return</span> <span class="n">name</span><span class="p">,</span> <span class="n">cte</span> </span></pre></div> diff --git a/docs/sqlglot/optimizer/merge_subqueries.html b/docs/sqlglot/optimizer/merge_subqueries.html index d28a8a8..c7e13c4 100644 --- a/docs/sqlglot/optimizer/merge_subqueries.html +++ b/docs/sqlglot/optimizer/merge_subqueries.html @@ -568,7 +568,7 @@ queries if it would result in multiple table selects in a single query:</p> <div class="attr variable"> <span class="name">UNMERGABLE_ARGS</span> = <input id="UNMERGABLE_ARGS-view-value" class="view-value-toggle-state" type="checkbox" aria-hidden="true" tabindex="-1"> - <label class="view-value-button pdoc-button" for="UNMERGABLE_ARGS-view-value"></label><span class="default_value">{'kind', 'offset', 'settings', 'locks', 'match', 'with', 'into', 'distribute', 'cluster', 'format', 'laterals', 'limit', 'group', 'sample', 'sort', 'windows', 'pivots', 'having', 'distinct', 'qualify'}</span> + <label class="view-value-button pdoc-button" for="UNMERGABLE_ARGS-view-value"></label><span class="default_value">{'distinct', 'locks', 'laterals', 'pivots', 'limit', 'distribute', 'into', 'kind', 'sort', 'match', 'cluster', 'format', 'sample', 'settings', 'windows', 'qualify', 'having', 'with', 'offset', 'group'}</span> </div> diff --git a/docs/sqlglot/optimizer/optimizer.html b/docs/sqlglot/optimizer/optimizer.html index b9ecdea..96e0166 100644 --- a/docs/sqlglot/optimizer/optimizer.html +++ b/docs/sqlglot/optimizer/optimizer.html @@ -175,7 +175,7 @@ <div class="attr function"> <span class="def">def</span> - <span class="name">optimize</span><span class="signature pdoc-code multiline">(<span class="param"> <span class="n">expression</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="n"><a href="../expressions.html#Expression">sqlglot.expressions.Expression</a></span>,</span><span class="param"> <span class="n">schema</span><span class="p">:</span> <span class="n">Union</span><span class="p">[</span><span class="nb">dict</span><span class="p">,</span> <span class="n"><a href="../schema.html#Schema">sqlglot.schema.Schema</a></span><span class="p">,</span> <span class="n">NoneType</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>,</span><span class="param"> <span class="n">db</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>,</span><span class="param"> <span class="n">catalog</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>,</span><span class="param"> <span class="n">dialect</span><span class="p">:</span> <span class="n">Union</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n"><a href="../dialects/dialect.html#Dialect">sqlglot.dialects.dialect.Dialect</a></span><span class="p">,</span> <span class="n">Type</span><span class="p">[</span><span class="n"><a href="../dialects/dialect.html#Dialect">sqlglot.dialects.dialect.Dialect</a></span><span class="p">],</span> <span class="n">NoneType</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>,</span><span class="param"> <span class="n">rules</span><span class="p">:</span> <span class="n">Sequence</span><span class="p">[</span><span class="n">Callable</span><span class="p">]</span> <span class="o">=</span> <span class="p">(</span><span class="o"><</span><span class="n">function</span> <span class="n">qualify</span> <span class="n">at</span> <span class="mh">0x7fd1e2842c20</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">pushdown_projections</span> <span class="n">at</span> <span class="mh">0x7fd1e28425f0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">normalize</span> <span class="n">at</span> <span class="mh">0x7fd1e28ba560</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">unnest_subqueries</span> <span class="n">at</span> <span class="mh">0x7fd1e2842f80</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">pushdown_predicates</span> <span class="n">at</span> <span class="mh">0x7fd1e2841510</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">optimize_joins</span> <span class="n">at</span> <span class="mh">0x7fd1e28411b0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">eliminate_subqueries</span> <span class="n">at</span> <span class="mh">0x7fd1e2840430</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">merge_subqueries</span> <span class="n">at</span> <span class="mh">0x7fd1e28404c0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">eliminate_joins</span> <span class="n">at</span> <span class="mh">0x7fd1e28ba3b0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">eliminate_ctes</span> <span class="n">at</span> <span class="mh">0x7fd1e28ba290</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">quote_identifiers</span> <span class="n">at</span> <span class="mh">0x7fd1e2842560</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">annotate_types</span> <span class="n">at</span> <span class="mh">0x7fd1e2bce440</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">canonicalize</span> <span class="n">at</span> <span class="mh">0x7fd1e28b9cf0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">simplify</span> <span class="n">at</span> <span class="mh">0x7fd1e28ba710</span><span class="o">></span><span class="p">)</span>,</span><span class="param"> <span class="o">**</span><span class="n">kwargs</span></span><span class="return-annotation">) -> <span class="n"><a href="../expressions.html#Expression">sqlglot.expressions.Expression</a></span>:</span></span> + <span class="name">optimize</span><span class="signature pdoc-code multiline">(<span class="param"> <span class="n">expression</span><span class="p">:</span> <span class="nb">str</span> <span class="o">|</span> <span class="n"><a href="../expressions.html#Expression">sqlglot.expressions.Expression</a></span>,</span><span class="param"> <span class="n">schema</span><span class="p">:</span> <span class="n">Union</span><span class="p">[</span><span class="nb">dict</span><span class="p">,</span> <span class="n"><a href="../schema.html#Schema">sqlglot.schema.Schema</a></span><span class="p">,</span> <span class="n">NoneType</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>,</span><span class="param"> <span class="n">db</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>,</span><span class="param"> <span class="n">catalog</span><span class="p">:</span> <span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>,</span><span class="param"> <span class="n">dialect</span><span class="p">:</span> <span class="n">Union</span><span class="p">[</span><span class="nb">str</span><span class="p">,</span> <span class="n"><a href="../dialects/dialect.html#Dialect">sqlglot.dialects.dialect.Dialect</a></span><span class="p">,</span> <span class="n">Type</span><span class="p">[</span><span class="n"><a href="../dialects/dialect.html#Dialect">sqlglot.dialects.dialect.Dialect</a></span><span class="p">],</span> <span class="n">NoneType</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span>,</span><span class="param"> <span class="n">rules</span><span class="p">:</span> <span class="n">Sequence</span><span class="p">[</span><span class="n">Callable</span><span class="p">]</span> <span class="o">=</span> <span class="p">(</span><span class="o"><</span><span class="n">function</span> <span class="n">qualify</span> <span class="n">at</span> <span class="mh">0x7f874290bd90</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">pushdown_projections</span> <span class="n">at</span> <span class="mh">0x7f874290b760</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">normalize</span> <span class="n">at</span> <span class="mh">0x7f8742a9b880</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">unnest_subqueries</span> <span class="n">at</span> <span class="mh">0x7f8742914160</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">pushdown_predicates</span> <span class="n">at</span> <span class="mh">0x7f874290a710</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">optimize_joins</span> <span class="n">at</span> <span class="mh">0x7f874290a3b0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">eliminate_subqueries</span> <span class="n">at</span> <span class="mh">0x7f87429096c0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">merge_subqueries</span> <span class="n">at</span> <span class="mh">0x7f8742909750</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">eliminate_joins</span> <span class="n">at</span> <span class="mh">0x7f8742a9b640</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">eliminate_ctes</span> <span class="n">at</span> <span class="mh">0x7f8742a9b520</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">quote_identifiers</span> <span class="n">at</span> <span class="mh">0x7f874290b6d0</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">annotate_types</span> <span class="n">at</span> <span class="mh">0x7f8742a93520</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">canonicalize</span> <span class="n">at</span> <span class="mh">0x7f8742a9af80</span><span class="o">></span><span class="p">,</span> <span class="o"><</span><span class="n">function</span> <span class="n">simplify</span> <span class="n">at</span> <span class="mh">0x7f8742a9ba30</span><span class="o">></span><span class="p">)</span>,</span><span class="param"> <span class="o">**</span><span class="n">kwargs</span></span><span class="return-annotation">) -> <span class="n"><a href="../expressions.html#Expression">sqlglot.expressions.Expression</a></span>:</span></span> <label class="view-source-button" for="optimize-view-source"><span>View Source</span></label> diff --git a/docs/sqlglot/optimizer/qualify_columns.html b/docs/sqlglot/optimizer/qualify_columns.html index 3ba75a4..928b611 100644 --- a/docs/sqlglot/optimizer/qualify_columns.html +++ b/docs/sqlglot/optimizer/qualify_columns.html @@ -127,574 +127,572 @@ </span><span id="L-39"><a href="#L-39"><span class="linenos"> 39</span></a><span class="sd"> """</span> </span><span id="L-40"><a href="#L-40"><span class="linenos"> 40</span></a> <span class="n">schema</span> <span class="o">=</span> <span class="n">ensure_schema</span><span class="p">(</span><span class="n">schema</span><span class="p">)</span> </span><span id="L-41"><a href="#L-41"><span class="linenos"> 41</span></a> <span class="n">infer_schema</span> <span class="o">=</span> <span class="n">schema</span><span class="o">.</span><span class="n">empty</span> <span class="k">if</span> <span class="n">infer_schema</span> <span class="ow">is</span> <span class="kc">None</span> <span class="k">else</span> <span class="n">infer_schema</span> -</span><span id="L-42"><a href="#L-42"><span class="linenos"> 42</span></a> -</span><span id="L-43"><a href="#L-43"><span class="linenos"> 43</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-44"><a href="#L-44"><span class="linenos"> 44</span></a> <span class="n">resolver</span> <span class="o">=</span> <span class="n">Resolver</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">,</span> <span class="n">infer_schema</span><span class="o">=</span><span class="n">infer_schema</span><span class="p">)</span> -</span><span id="L-45"><a href="#L-45"><span class="linenos"> 45</span></a> <span class="n">_pop_table_column_aliases</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">ctes</span><span class="p">)</span> -</span><span id="L-46"><a href="#L-46"><span class="linenos"> 46</span></a> <span class="n">_pop_table_column_aliases</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">derived_tables</span><span class="p">)</span> -</span><span id="L-47"><a href="#L-47"><span class="linenos"> 47</span></a> <span class="n">using_column_tables</span> <span class="o">=</span> <span class="n">_expand_using</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> -</span><span id="L-48"><a href="#L-48"><span class="linenos"> 48</span></a> -</span><span id="L-49"><a href="#L-49"><span class="linenos"> 49</span></a> <span class="k">if</span> <span class="n">schema</span><span class="o">.</span><span class="n">empty</span> <span class="ow">and</span> <span class="n">expand_alias_refs</span><span class="p">:</span> -</span><span id="L-50"><a href="#L-50"><span class="linenos"> 50</span></a> <span class="n">_expand_alias_refs</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> -</span><span id="L-51"><a href="#L-51"><span class="linenos"> 51</span></a> -</span><span id="L-52"><a href="#L-52"><span class="linenos"> 52</span></a> <span class="n">_qualify_columns</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> -</span><span id="L-53"><a href="#L-53"><span class="linenos"> 53</span></a> -</span><span id="L-54"><a href="#L-54"><span class="linenos"> 54</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">schema</span><span class="o">.</span><span class="n">empty</span> <span class="ow">and</span> <span class="n">expand_alias_refs</span><span class="p">:</span> -</span><span id="L-55"><a href="#L-55"><span class="linenos"> 55</span></a> <span class="n">_expand_alias_refs</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> -</span><span id="L-56"><a href="#L-56"><span class="linenos"> 56</span></a> -</span><span id="L-57"><a href="#L-57"><span class="linenos"> 57</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">):</span> -</span><span id="L-58"><a href="#L-58"><span class="linenos"> 58</span></a> <span class="n">_expand_stars</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">,</span> <span class="n">using_column_tables</span><span class="p">)</span> -</span><span id="L-59"><a href="#L-59"><span class="linenos"> 59</span></a> <span class="n">_qualify_outputs</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> -</span><span id="L-60"><a href="#L-60"><span class="linenos"> 60</span></a> <span class="n">_expand_group_by</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> -</span><span id="L-61"><a href="#L-61"><span class="linenos"> 61</span></a> <span class="n">_expand_order_by</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> -</span><span id="L-62"><a href="#L-62"><span class="linenos"> 62</span></a> -</span><span id="L-63"><a href="#L-63"><span class="linenos"> 63</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-64"><a href="#L-64"><span class="linenos"> 64</span></a> +</span><span id="L-42"><a href="#L-42"><span class="linenos"> 42</span></a> <span class="n">pseudocolumns</span> <span class="o">=</span> <span class="n">Dialect</span><span class="o">.</span><span class="n">get_or_raise</span><span class="p">(</span><span class="n">schema</span><span class="o">.</span><span class="n">dialect</span><span class="p">)</span><span class="o">.</span><span class="n">PSEUDOCOLUMNS</span> +</span><span id="L-43"><a href="#L-43"><span class="linenos"> 43</span></a> +</span><span id="L-44"><a href="#L-44"><span class="linenos"> 44</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-45"><a href="#L-45"><span class="linenos"> 45</span></a> <span class="n">resolver</span> <span class="o">=</span> <span class="n">Resolver</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">,</span> <span class="n">infer_schema</span><span class="o">=</span><span class="n">infer_schema</span><span class="p">)</span> +</span><span id="L-46"><a href="#L-46"><span class="linenos"> 46</span></a> <span class="n">_pop_table_column_aliases</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">ctes</span><span class="p">)</span> +</span><span id="L-47"><a href="#L-47"><span class="linenos"> 47</span></a> <span class="n">_pop_table_column_aliases</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">derived_tables</span><span class="p">)</span> +</span><span id="L-48"><a href="#L-48"><span class="linenos"> 48</span></a> <span class="n">using_column_tables</span> <span class="o">=</span> <span class="n">_expand_using</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="L-49"><a href="#L-49"><span class="linenos"> 49</span></a> +</span><span id="L-50"><a href="#L-50"><span class="linenos"> 50</span></a> <span class="k">if</span> <span class="n">schema</span><span class="o">.</span><span class="n">empty</span> <span class="ow">and</span> <span class="n">expand_alias_refs</span><span class="p">:</span> +</span><span id="L-51"><a href="#L-51"><span class="linenos"> 51</span></a> <span class="n">_expand_alias_refs</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="L-52"><a href="#L-52"><span class="linenos"> 52</span></a> +</span><span id="L-53"><a href="#L-53"><span class="linenos"> 53</span></a> <span class="n">_qualify_columns</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="L-54"><a href="#L-54"><span class="linenos"> 54</span></a> +</span><span id="L-55"><a href="#L-55"><span class="linenos"> 55</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">schema</span><span class="o">.</span><span class="n">empty</span> <span class="ow">and</span> <span class="n">expand_alias_refs</span><span class="p">:</span> +</span><span id="L-56"><a href="#L-56"><span class="linenos"> 56</span></a> <span class="n">_expand_alias_refs</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="L-57"><a href="#L-57"><span class="linenos"> 57</span></a> +</span><span id="L-58"><a href="#L-58"><span class="linenos"> 58</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">):</span> +</span><span id="L-59"><a href="#L-59"><span class="linenos"> 59</span></a> <span class="n">_expand_stars</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">,</span> <span class="n">using_column_tables</span><span class="p">,</span> <span class="n">pseudocolumns</span><span class="p">)</span> +</span><span id="L-60"><a href="#L-60"><span class="linenos"> 60</span></a> <span class="n">_qualify_outputs</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> +</span><span id="L-61"><a href="#L-61"><span class="linenos"> 61</span></a> <span class="n">_expand_group_by</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> +</span><span id="L-62"><a href="#L-62"><span class="linenos"> 62</span></a> <span class="n">_expand_order_by</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="L-63"><a href="#L-63"><span class="linenos"> 63</span></a> +</span><span id="L-64"><a href="#L-64"><span class="linenos"> 64</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="L-65"><a href="#L-65"><span class="linenos"> 65</span></a> -</span><span id="L-66"><a href="#L-66"><span class="linenos"> 66</span></a><span class="k">def</span> <span class="nf">validate_qualify_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">E</span><span class="p">)</span> <span class="o">-></span> <span class="n">E</span><span class="p">:</span> -</span><span id="L-67"><a href="#L-67"><span class="linenos"> 67</span></a><span class="w"> </span><span class="sd">"""Raise an `OptimizeError` if any columns aren't qualified"""</span> -</span><span id="L-68"><a href="#L-68"><span class="linenos"> 68</span></a> <span class="n">unqualified_columns</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-69"><a href="#L-69"><span class="linenos"> 69</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-70"><a href="#L-70"><span class="linenos"> 70</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> -</span><span id="L-71"><a href="#L-71"><span class="linenos"> 71</span></a> <span class="n">unqualified_columns</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">unqualified_columns</span><span class="p">)</span> -</span><span id="L-72"><a href="#L-72"><span class="linenos"> 72</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">external_columns</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">is_correlated_subquery</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">pivots</span><span class="p">:</span> -</span><span id="L-73"><a href="#L-73"><span class="linenos"> 73</span></a> <span class="n">column</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">external_columns</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> -</span><span id="L-74"><a href="#L-74"><span class="linenos"> 74</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span> -</span><span id="L-75"><a href="#L-75"><span class="linenos"> 75</span></a> <span class="sa">f</span><span class="s2">"""Column '</span><span class="si">{</span><span class="n">column</span><span class="si">}</span><span class="s2">' could not be resolved</span><span class="si">{</span><span class="sa">f</span><span class="s2">" for table: '</span><span class="si">{</span><span class="n">column</span><span class="o">.</span><span class="n">table</span><span class="si">}</span><span class="s2">'"</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="n">column</span><span class="o">.</span><span class="n">table</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="s1">''</span><span class="si">}</span><span class="s2">"""</span> -</span><span id="L-76"><a href="#L-76"><span class="linenos"> 76</span></a> <span class="p">)</span> -</span><span id="L-77"><a href="#L-77"><span class="linenos"> 77</span></a> -</span><span id="L-78"><a href="#L-78"><span class="linenos"> 78</span></a> <span class="k">if</span> <span class="n">unqualified_columns</span><span class="p">:</span> -</span><span id="L-79"><a href="#L-79"><span class="linenos"> 79</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Ambiguous columns: </span><span class="si">{</span><span class="n">unqualified_columns</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="L-80"><a href="#L-80"><span class="linenos"> 80</span></a> <span class="k">return</span> <span class="n">expression</span> -</span><span id="L-81"><a href="#L-81"><span class="linenos"> 81</span></a> +</span><span id="L-66"><a href="#L-66"><span class="linenos"> 66</span></a> +</span><span id="L-67"><a href="#L-67"><span class="linenos"> 67</span></a><span class="k">def</span> <span class="nf">validate_qualify_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">E</span><span class="p">)</span> <span class="o">-></span> <span class="n">E</span><span class="p">:</span> +</span><span id="L-68"><a href="#L-68"><span class="linenos"> 68</span></a><span class="w"> </span><span class="sd">"""Raise an `OptimizeError` if any columns aren't qualified"""</span> +</span><span id="L-69"><a href="#L-69"><span class="linenos"> 69</span></a> <span class="n">unqualified_columns</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-70"><a href="#L-70"><span class="linenos"> 70</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-71"><a href="#L-71"><span class="linenos"> 71</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> +</span><span id="L-72"><a href="#L-72"><span class="linenos"> 72</span></a> <span class="n">unqualified_columns</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">unqualified_columns</span><span class="p">)</span> +</span><span id="L-73"><a href="#L-73"><span class="linenos"> 73</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">external_columns</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">is_correlated_subquery</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">pivots</span><span class="p">:</span> +</span><span id="L-74"><a href="#L-74"><span class="linenos"> 74</span></a> <span class="n">column</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">external_columns</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> +</span><span id="L-75"><a href="#L-75"><span class="linenos"> 75</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span> +</span><span id="L-76"><a href="#L-76"><span class="linenos"> 76</span></a> <span class="sa">f</span><span class="s2">"""Column '</span><span class="si">{</span><span class="n">column</span><span class="si">}</span><span class="s2">' could not be resolved</span><span class="si">{</span><span class="sa">f</span><span class="s2">" for table: '</span><span class="si">{</span><span class="n">column</span><span class="o">.</span><span class="n">table</span><span class="si">}</span><span class="s2">'"</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="n">column</span><span class="o">.</span><span class="n">table</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="s1">''</span><span class="si">}</span><span class="s2">"""</span> +</span><span id="L-77"><a href="#L-77"><span class="linenos"> 77</span></a> <span class="p">)</span> +</span><span id="L-78"><a href="#L-78"><span class="linenos"> 78</span></a> +</span><span id="L-79"><a href="#L-79"><span class="linenos"> 79</span></a> <span class="k">if</span> <span class="n">unqualified_columns</span><span class="p">:</span> +</span><span id="L-80"><a href="#L-80"><span class="linenos"> 80</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Ambiguous columns: </span><span class="si">{</span><span class="n">unqualified_columns</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="L-81"><a href="#L-81"><span class="linenos"> 81</span></a> <span class="k">return</span> <span class="n">expression</span> </span><span id="L-82"><a href="#L-82"><span class="linenos"> 82</span></a> -</span><span id="L-83"><a href="#L-83"><span class="linenos"> 83</span></a><span class="k">def</span> <span class="nf">_pop_table_column_aliases</span><span class="p">(</span><span class="n">derived_tables</span><span class="p">:</span> <span 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">CTE</span> <span class="o">|</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">])</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> -</span><span id="L-84"><a href="#L-84"><span class="linenos"> 84</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-85"><a href="#L-85"><span class="linenos"> 85</span></a><span class="sd"> Remove table column aliases.</span> -</span><span id="L-86"><a href="#L-86"><span class="linenos"> 86</span></a> -</span><span id="L-87"><a href="#L-87"><span class="linenos"> 87</span></a><span class="sd"> (e.g. SELECT ... FROM (SELECT ...) AS foo(col1, col2)</span> -</span><span id="L-88"><a href="#L-88"><span class="linenos"> 88</span></a><span class="sd"> """</span> -</span><span id="L-89"><a href="#L-89"><span class="linenos"> 89</span></a> <span class="k">for</span> <span class="n">derived_table</span> <span class="ow">in</span> <span class="n">derived_tables</span><span class="p">:</span> -</span><span id="L-90"><a href="#L-90"><span class="linenos"> 90</span></a> <span class="n">table_alias</span> <span class="o">=</span> <span class="n">derived_table</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> -</span><span id="L-91"><a href="#L-91"><span class="linenos"> 91</span></a> <span class="k">if</span> <span class="n">table_alias</span><span class="p">:</span> -</span><span id="L-92"><a href="#L-92"><span class="linenos"> 92</span></a> <span class="n">table_alias</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"columns"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> -</span><span id="L-93"><a href="#L-93"><span class="linenos"> 93</span></a> +</span><span id="L-83"><a href="#L-83"><span class="linenos"> 83</span></a> +</span><span id="L-84"><a href="#L-84"><span class="linenos"> 84</span></a><span class="k">def</span> <span class="nf">_pop_table_column_aliases</span><span class="p">(</span><span class="n">derived_tables</span><span class="p">:</span> <span 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">CTE</span> <span class="o">|</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">])</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> +</span><span id="L-85"><a href="#L-85"><span class="linenos"> 85</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-86"><a href="#L-86"><span class="linenos"> 86</span></a><span class="sd"> Remove table column aliases.</span> +</span><span id="L-87"><a href="#L-87"><span class="linenos"> 87</span></a> +</span><span id="L-88"><a href="#L-88"><span class="linenos"> 88</span></a><span class="sd"> (e.g. SELECT ... FROM (SELECT ...) AS foo(col1, col2)</span> +</span><span id="L-89"><a href="#L-89"><span class="linenos"> 89</span></a><span class="sd"> """</span> +</span><span id="L-90"><a href="#L-90"><span class="linenos"> 90</span></a> <span class="k">for</span> <span class="n">derived_table</span> <span class="ow">in</span> <span class="n">derived_tables</span><span class="p">:</span> +</span><span id="L-91"><a href="#L-91"><span class="linenos"> 91</span></a> <span class="n">table_alias</span> <span class="o">=</span> <span class="n">derived_table</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> +</span><span id="L-92"><a href="#L-92"><span class="linenos"> 92</span></a> <span class="k">if</span> <span class="n">table_alias</span><span class="p">:</span> +</span><span id="L-93"><a href="#L-93"><span class="linenos"> 93</span></a> <span class="n">table_alias</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"columns"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> </span><span id="L-94"><a href="#L-94"><span class="linenos"> 94</span></a> -</span><span id="L-95"><a href="#L-95"><span class="linenos"> 95</span></a><span class="k">def</span> <span class="nf">_expand_using</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">:</span> <span class="n">Resolver</span><span class="p">)</span> <span class="o">-></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">Any</span><span class="p">]:</span> -</span><span id="L-96"><a href="#L-96"><span class="linenos"> 96</span></a> <span class="n">joins</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">))</span> -</span><span id="L-97"><a href="#L-97"><span class="linenos"> 97</span></a> <span class="n">names</span> <span class="o">=</span> <span class="p">{</span><span class="n">join</span><span class="o">.</span><span class="n">alias_or_name</span> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">joins</span><span class="p">}</span> -</span><span id="L-98"><a href="#L-98"><span class="linenos"> 98</span></a> <span class="n">ordered</span> <span class="o">=</span> <span class="p">[</span><span class="n">key</span> <span class="k">for</span> <span class="n">key</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span> <span class="k">if</span> <span class="n">key</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">names</span><span class="p">]</span> -</span><span id="L-99"><a href="#L-99"><span class="linenos"> 99</span></a> -</span><span id="L-100"><a href="#L-100"><span class="linenos">100</span></a> <span class="c1"># Mapping of automatically joined column names to an ordered set of source names (dict).</span> -</span><span id="L-101"><a href="#L-101"><span class="linenos">101</span></a> <span class="n">column_tables</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">Any</span><span class="p">]]</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="L-102"><a href="#L-102"><span class="linenos">102</span></a> -</span><span id="L-103"><a href="#L-103"><span class="linenos">103</span></a> <span class="k">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-104"><a href="#L-104"><span class="linenos">104</span></a> <span class="n">using</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"using"</span><span class="p">)</span> -</span><span id="L-105"><a href="#L-105"><span class="linenos">105</span></a> -</span><span id="L-106"><a href="#L-106"><span class="linenos">106</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">using</span><span class="p">:</span> -</span><span id="L-107"><a href="#L-107"><span class="linenos">107</span></a> <span class="k">continue</span> -</span><span id="L-108"><a href="#L-108"><span class="linenos">108</span></a> -</span><span id="L-109"><a href="#L-109"><span class="linenos">109</span></a> <span class="n">join_table</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">alias_or_name</span> -</span><span id="L-110"><a href="#L-110"><span class="linenos">110</span></a> -</span><span id="L-111"><a href="#L-111"><span class="linenos">111</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="L-112"><a href="#L-112"><span class="linenos">112</span></a> -</span><span id="L-113"><a href="#L-113"><span class="linenos">113</span></a> <span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">:</span> -</span><span id="L-114"><a href="#L-114"><span class="linenos">114</span></a> <span class="k">if</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">ordered</span><span class="p">:</span> -</span><span id="L-115"><a href="#L-115"><span class="linenos">115</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">k</span><span class="p">):</span> -</span><span id="L-116"><a href="#L-116"><span class="linenos">116</span></a> <span class="k">if</span> <span class="n">column</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> -</span><span id="L-117"><a href="#L-117"><span class="linenos">117</span></a> <span class="n">columns</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">k</span> -</span><span id="L-118"><a href="#L-118"><span class="linenos">118</span></a> -</span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a> <span class="n">source_table</span> <span class="o">=</span> <span class="n">ordered</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span> -</span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a> <span class="n">ordered</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">join_table</span><span class="p">)</span> -</span><span id="L-121"><a href="#L-121"><span class="linenos">121</span></a> <span class="n">join_columns</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">join_table</span><span class="p">)</span> -</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a> <span class="n">conditions</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a> -</span><span id="L-124"><a href="#L-124"><span class="linenos">124</span></a> <span class="k">for</span> <span class="n">identifier</span> <span class="ow">in</span> <span class="n">using</span><span class="p">:</span> -</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a> <span class="n">identifier</span> <span class="o">=</span> <span class="n">identifier</span><span class="o">.</span><span class="n">name</span> -</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a> <span class="n">table</span> <span class="o">=</span> <span class="n">columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">identifier</span><span class="p">)</span> -</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a> -</span><span id="L-128"><a href="#L-128"><span class="linenos">128</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table</span> <span class="ow">or</span> <span class="n">identifier</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">join_columns</span><span class="p">:</span> -</span><span id="L-129"><a href="#L-129"><span class="linenos">129</span></a> <span class="k">if</span> <span class="n">columns</span> <span class="ow">and</span> <span class="n">join_columns</span><span class="p">:</span> -</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Cannot automatically join: </span><span class="si">{</span><span class="n">identifier</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="L-131"><a href="#L-131"><span class="linenos">131</span></a> -</span><span id="L-132"><a href="#L-132"><span class="linenos">132</span></a> <span class="n">table</span> <span class="o">=</span> <span class="n">table</span> <span class="ow">or</span> <span class="n">source_table</span> -</span><span id="L-133"><a href="#L-133"><span class="linenos">133</span></a> <span class="n">conditions</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> -</span><span id="L-134"><a href="#L-134"><span class="linenos">134</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">condition</span><span class="p">(</span> -</span><span id="L-135"><a href="#L-135"><span class="linenos">135</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">(</span> -</span><span id="L-136"><a href="#L-136"><span class="linenos">136</span></a> <span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">identifier</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">table</span><span class="p">),</span> -</span><span id="L-137"><a href="#L-137"><span class="linenos">137</span></a> <span class="n">expression</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">identifier</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">join_table</span><span class="p">),</span> -</span><span id="L-138"><a href="#L-138"><span class="linenos">138</span></a> <span class="p">)</span> -</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a> <span class="p">)</span> -</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a> <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="c1"># Set all values in the dict to None, because we only care about the key ordering</span> -</span><span id="L-143"><a href="#L-143"><span class="linenos">143</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="n">column_tables</span><span class="o">.</span><span class="n">setdefault</span><span class="p">(</span><span class="n">identifier</span><span class="p">,</span> <span class="p">{})</span> -</span><span id="L-144"><a href="#L-144"><span class="linenos">144</span></a> <span class="k">if</span> <span class="n">table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> -</span><span id="L-145"><a href="#L-145"><span class="linenos">145</span></a> <span class="n">tables</span><span class="p">[</span><span class="n">table</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a> <span class="k">if</span> <span class="n">join_table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> -</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a> <span class="n">tables</span><span class="p">[</span><span class="n">join_table</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-148"><a href="#L-148"><span class="linenos">148</span></a> -</span><span id="L-149"><a href="#L-149"><span class="linenos">149</span></a> <span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"using"</span><span class="p">)</span> -</span><span id="L-150"><a href="#L-150"><span class="linenos">150</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"on"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span><span class="o">*</span><span class="n">conditions</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">))</span> -</span><span id="L-151"><a href="#L-151"><span class="linenos">151</span></a> -</span><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a> <span class="k">if</span> <span class="n">column_tables</span><span class="p">:</span> -</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span> -</span><span id="L-154"><a href="#L-154"><span class="linenos">154</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> <span class="ow">and</span> <span class="n">column</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">column_tables</span><span class="p">:</span> -</span><span id="L-155"><a href="#L-155"><span class="linenos">155</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="n">column_tables</span><span class="p">[</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">]</span> -</span><span id="L-156"><a href="#L-156"><span class="linenos">156</span></a> <span class="n">coalesce</span> <span class="o">=</span> <span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">table</span><span class="p">)</span> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">]</span> -</span><span id="L-157"><a href="#L-157"><span class="linenos">157</span></a> <span class="n">replacement</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">Coalesce</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">coalesce</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">expressions</span><span class="o">=</span><span class="n">coalesce</span><span class="p">[</span><span class="mi">1</span><span class="p">:])</span> -</span><span id="L-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="c1"># Ensure selects keep their output name</span> -</span><span id="L-160"><a href="#L-160"><span class="linenos">160</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">parent</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> -</span><span id="L-161"><a href="#L-161"><span class="linenos">161</span></a> <span class="n">replacement</span> <span class="o">=</span> <span class="n">alias</span><span class="p">(</span><span class="n">replacement</span><span class="p">,</span> <span class="n">alias</span><span class="o">=</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</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="n">scope</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="n">replacement</span><span class="p">)</span> -</span><span id="L-164"><a href="#L-164"><span class="linenos">164</span></a> -</span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a> <span class="k">return</span> <span class="n">column_tables</span> -</span><span id="L-166"><a href="#L-166"><span class="linenos">166</span></a> +</span><span id="L-95"><a href="#L-95"><span class="linenos"> 95</span></a> +</span><span id="L-96"><a href="#L-96"><span class="linenos"> 96</span></a><span class="k">def</span> <span class="nf">_expand_using</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">:</span> <span class="n">Resolver</span><span class="p">)</span> <span class="o">-></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">Any</span><span class="p">]:</span> +</span><span id="L-97"><a href="#L-97"><span class="linenos"> 97</span></a> <span class="n">joins</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">))</span> +</span><span id="L-98"><a href="#L-98"><span class="linenos"> 98</span></a> <span class="n">names</span> <span class="o">=</span> <span class="p">{</span><span class="n">join</span><span class="o">.</span><span class="n">alias_or_name</span> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">joins</span><span class="p">}</span> +</span><span id="L-99"><a href="#L-99"><span class="linenos"> 99</span></a> <span class="n">ordered</span> <span class="o">=</span> <span class="p">[</span><span class="n">key</span> <span class="k">for</span> <span class="n">key</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span> <span class="k">if</span> <span class="n">key</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">names</span><span class="p">]</span> +</span><span id="L-100"><a href="#L-100"><span class="linenos">100</span></a> +</span><span id="L-101"><a href="#L-101"><span class="linenos">101</span></a> <span class="c1"># Mapping of automatically joined column names to an ordered set of source names (dict).</span> +</span><span id="L-102"><a href="#L-102"><span class="linenos">102</span></a> <span class="n">column_tables</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">Any</span><span class="p">]]</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="L-103"><a href="#L-103"><span class="linenos">103</span></a> +</span><span id="L-104"><a href="#L-104"><span class="linenos">104</span></a> <span class="k">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-105"><a href="#L-105"><span class="linenos">105</span></a> <span class="n">using</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"using"</span><span class="p">)</span> +</span><span id="L-106"><a href="#L-106"><span class="linenos">106</span></a> +</span><span id="L-107"><a href="#L-107"><span class="linenos">107</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">using</span><span class="p">:</span> +</span><span id="L-108"><a href="#L-108"><span class="linenos">108</span></a> <span class="k">continue</span> +</span><span id="L-109"><a href="#L-109"><span class="linenos">109</span></a> +</span><span id="L-110"><a href="#L-110"><span class="linenos">110</span></a> <span class="n">join_table</span> <span class="o">=</span> <span class="n">join</span><span class="o">.</span><span class="n">alias_or_name</span> +</span><span id="L-111"><a href="#L-111"><span class="linenos">111</span></a> +</span><span id="L-112"><a href="#L-112"><span class="linenos">112</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="L-113"><a href="#L-113"><span class="linenos">113</span></a> +</span><span id="L-114"><a href="#L-114"><span class="linenos">114</span></a> <span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">:</span> +</span><span id="L-115"><a href="#L-115"><span class="linenos">115</span></a> <span class="k">if</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">ordered</span><span class="p">:</span> +</span><span id="L-116"><a href="#L-116"><span class="linenos">116</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">k</span><span class="p">):</span> +</span><span id="L-117"><a href="#L-117"><span class="linenos">117</span></a> <span class="k">if</span> <span class="n">column</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> +</span><span id="L-118"><a href="#L-118"><span class="linenos">118</span></a> <span class="n">columns</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">k</span> +</span><span id="L-119"><a href="#L-119"><span class="linenos">119</span></a> +</span><span id="L-120"><a href="#L-120"><span class="linenos">120</span></a> <span class="n">source_table</span> <span class="o">=</span> <span class="n">ordered</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span> +</span><span id="L-121"><a href="#L-121"><span class="linenos">121</span></a> <span class="n">ordered</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">join_table</span><span class="p">)</span> +</span><span id="L-122"><a href="#L-122"><span class="linenos">122</span></a> <span class="n">join_columns</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">join_table</span><span class="p">)</span> +</span><span id="L-123"><a href="#L-123"><span class="linenos">123</span></a> <span class="n">conditions</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-124"><a href="#L-124"><span class="linenos">124</span></a> +</span><span id="L-125"><a href="#L-125"><span class="linenos">125</span></a> <span class="k">for</span> <span class="n">identifier</span> <span class="ow">in</span> <span class="n">using</span><span class="p">:</span> +</span><span id="L-126"><a href="#L-126"><span class="linenos">126</span></a> <span class="n">identifier</span> <span class="o">=</span> <span class="n">identifier</span><span class="o">.</span><span class="n">name</span> +</span><span id="L-127"><a href="#L-127"><span class="linenos">127</span></a> <span class="n">table</span> <span class="o">=</span> <span class="n">columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">identifier</span><span class="p">)</span> +</span><span id="L-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">if</span> <span class="ow">not</span> <span class="n">table</span> <span class="ow">or</span> <span class="n">identifier</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">join_columns</span><span class="p">:</span> +</span><span id="L-130"><a href="#L-130"><span class="linenos">130</span></a> <span class="k">if</span> <span class="n">columns</span> <span class="ow">and</span> <span class="n">join_columns</span><span class="p">:</span> +</span><span id="L-131"><a href="#L-131"><span class="linenos">131</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Cannot automatically join: </span><span class="si">{</span><span class="n">identifier</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="L-132"><a href="#L-132"><span class="linenos">132</span></a> +</span><span id="L-133"><a href="#L-133"><span class="linenos">133</span></a> <span class="n">table</span> <span class="o">=</span> <span class="n">table</span> <span class="ow">or</span> <span class="n">source_table</span> +</span><span id="L-134"><a href="#L-134"><span class="linenos">134</span></a> <span class="n">conditions</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> +</span><span id="L-135"><a href="#L-135"><span class="linenos">135</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">condition</span><span class="p">(</span> +</span><span id="L-136"><a href="#L-136"><span class="linenos">136</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">EQ</span><span class="p">(</span> +</span><span id="L-137"><a href="#L-137"><span class="linenos">137</span></a> <span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">identifier</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">table</span><span class="p">),</span> +</span><span id="L-138"><a href="#L-138"><span class="linenos">138</span></a> <span class="n">expression</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">identifier</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">join_table</span><span class="p">),</span> +</span><span id="L-139"><a href="#L-139"><span class="linenos">139</span></a> <span class="p">)</span> +</span><span id="L-140"><a href="#L-140"><span class="linenos">140</span></a> <span class="p">)</span> +</span><span id="L-141"><a href="#L-141"><span class="linenos">141</span></a> <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="c1"># Set all values in the dict to None, because we only care about the key ordering</span> +</span><span id="L-144"><a href="#L-144"><span class="linenos">144</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="n">column_tables</span><span class="o">.</span><span class="n">setdefault</span><span class="p">(</span><span class="n">identifier</span><span class="p">,</span> <span class="p">{})</span> +</span><span id="L-145"><a href="#L-145"><span class="linenos">145</span></a> <span class="k">if</span> <span class="n">table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> +</span><span id="L-146"><a href="#L-146"><span class="linenos">146</span></a> <span class="n">tables</span><span class="p">[</span><span class="n">table</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-147"><a href="#L-147"><span class="linenos">147</span></a> <span class="k">if</span> <span class="n">join_table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> +</span><span id="L-148"><a href="#L-148"><span class="linenos">148</span></a> <span class="n">tables</span><span class="p">[</span><span class="n">join_table</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-149"><a href="#L-149"><span class="linenos">149</span></a> +</span><span id="L-150"><a href="#L-150"><span class="linenos">150</span></a> <span class="n">join</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"using"</span><span class="p">)</span> +</span><span id="L-151"><a href="#L-151"><span class="linenos">151</span></a> <span class="n">join</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"on"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">and_</span><span class="p">(</span><span class="o">*</span><span class="n">conditions</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">))</span> +</span><span id="L-152"><a href="#L-152"><span class="linenos">152</span></a> +</span><span id="L-153"><a href="#L-153"><span class="linenos">153</span></a> <span class="k">if</span> <span class="n">column_tables</span><span class="p">:</span> +</span><span id="L-154"><a href="#L-154"><span class="linenos">154</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span> +</span><span id="L-155"><a href="#L-155"><span class="linenos">155</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> <span class="ow">and</span> <span class="n">column</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">column_tables</span><span class="p">:</span> +</span><span id="L-156"><a href="#L-156"><span class="linenos">156</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="n">column_tables</span><span class="p">[</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">]</span> +</span><span id="L-157"><a href="#L-157"><span class="linenos">157</span></a> <span class="n">coalesce</span> <span class="o">=</span> <span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">table</span><span class="p">)</span> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">]</span> +</span><span id="L-158"><a href="#L-158"><span class="linenos">158</span></a> <span class="n">replacement</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">Coalesce</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">coalesce</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">expressions</span><span class="o">=</span><span class="n">coalesce</span><span class="p">[</span><span class="mi">1</span><span class="p">:])</span> +</span><span id="L-159"><a href="#L-159"><span class="linenos">159</span></a> +</span><span id="L-160"><a href="#L-160"><span class="linenos">160</span></a> <span class="c1"># Ensure selects keep their output name</span> +</span><span id="L-161"><a href="#L-161"><span class="linenos">161</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">parent</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> +</span><span id="L-162"><a href="#L-162"><span class="linenos">162</span></a> <span class="n">replacement</span> <span class="o">=</span> <span class="n">alias</span><span class="p">(</span><span class="n">replacement</span><span class="p">,</span> <span class="n">alias</span><span class="o">=</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</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="n">scope</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="n">replacement</span><span class="p">)</span> +</span><span id="L-165"><a href="#L-165"><span class="linenos">165</span></a> +</span><span id="L-166"><a href="#L-166"><span class="linenos">166</span></a> <span class="k">return</span> <span class="n">column_tables</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="k">def</span> <span class="nf">_expand_alias_refs</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">:</span> <span class="n">Resolver</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> -</span><span id="L-169"><a href="#L-169"><span class="linenos">169</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</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="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> -</span><span id="L-172"><a href="#L-172"><span class="linenos">172</span></a> <span class="k">return</span> -</span><span id="L-173"><a href="#L-173"><span class="linenos">173</span></a> -</span><span id="L-174"><a href="#L-174"><span class="linenos">174</span></a> <span class="n">alias_to_expression</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">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="nb">int</span><span class="p">]]</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="L-175"><a href="#L-175"><span class="linenos">175</span></a> -</span><span id="L-176"><a href="#L-176"><span class="linenos">176</span></a> <span class="k">def</span> <span class="nf">replace_columns</span><span class="p">(</span> -</span><span id="L-177"><a href="#L-177"><span class="linenos">177</span></a> <span class="n">node</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="n">resolve_table</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span><span class="p">,</span> <span class="n">literal_index</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span> -</span><span id="L-178"><a href="#L-178"><span class="linenos">178</span></a> <span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> -</span><span id="L-179"><a href="#L-179"><span class="linenos">179</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">node</span><span class="p">:</span> -</span><span id="L-180"><a href="#L-180"><span class="linenos">180</span></a> <span class="k">return</span> -</span><span id="L-181"><a href="#L-181"><span class="linenos">181</span></a> -</span><span id="L-182"><a href="#L-182"><span class="linenos">182</span></a> <span class="k">for</span> <span class="n">column</span><span class="p">,</span> <span class="o">*</span><span class="n">_</span> <span class="ow">in</span> <span class="n">walk_in_scope</span><span class="p">(</span><span class="n">node</span><span class="p">):</span> -</span><span id="L-183"><a href="#L-183"><span class="linenos">183</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">column</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-184"><a href="#L-184"><span class="linenos">184</span></a> <span class="k">continue</span> -</span><span id="L-185"><a href="#L-185"><span class="linenos">185</span></a> <span class="n">table</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> <span class="k">if</span> <span class="n">resolve_table</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> <span class="k">else</span> <span class="kc">None</span> -</span><span id="L-186"><a href="#L-186"><span class="linenos">186</span></a> <span class="n">alias_expr</span><span class="p">,</span> <span class="n">i</span> <span class="o">=</span> <span class="n">alias_to_expression</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="p">(</span><span class="kc">None</span><span class="p">,</span> <span class="mi">1</span><span class="p">))</span> -</span><span id="L-187"><a href="#L-187"><span class="linenos">187</span></a> <span class="n">double_agg</span> <span class="o">=</span> <span class="p">(</span> -</span><span id="L-188"><a href="#L-188"><span class="linenos">188</span></a> <span class="p">(</span><span class="n">alias_expr</span><span class="o">.</span><span class="n">find</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">AggFunc</span><span class="p">)</span> <span class="ow">and</span> <span class="n">column</span><span class="o">.</span><span class="n">find_ancestor</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">AggFunc</span><span class="p">))</span> -</span><span id="L-189"><a href="#L-189"><span class="linenos">189</span></a> <span class="k">if</span> <span class="n">alias_expr</span> -</span><span id="L-190"><a href="#L-190"><span class="linenos">190</span></a> <span class="k">else</span> <span class="kc">False</span> -</span><span id="L-191"><a href="#L-191"><span class="linenos">191</span></a> <span class="p">)</span> -</span><span id="L-192"><a href="#L-192"><span class="linenos">192</span></a> -</span><span id="L-193"><a href="#L-193"><span class="linenos">193</span></a> <span class="k">if</span> <span class="n">table</span> <span class="ow">and</span> <span class="p">(</span><span class="ow">not</span> <span class="n">alias_expr</span> <span class="ow">or</span> <span class="n">double_agg</span><span class="p">):</span> -</span><span id="L-194"><a href="#L-194"><span class="linenos">194</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">table</span><span class="p">)</span> -</span><span id="L-195"><a href="#L-195"><span class="linenos">195</span></a> <span class="k">elif</span> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> <span class="ow">and</span> <span class="n">alias_expr</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">double_agg</span><span class="p">:</span> -</span><span id="L-196"><a href="#L-196"><span class="linenos">196</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">alias_expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="n">literal_index</span> <span class="ow">or</span> <span class="n">resolve_table</span><span class="p">):</span> -</span><span id="L-197"><a href="#L-197"><span class="linenos">197</span></a> <span class="k">if</span> <span class="n">literal_index</span><span class="p">:</span> -</span><span id="L-198"><a href="#L-198"><span class="linenos">198</span></a> <span class="n">column</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">i</span><span class="p">))</span> -</span><span id="L-199"><a href="#L-199"><span class="linenos">199</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-200"><a href="#L-200"><span class="linenos">200</span></a> <span class="n">column</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">alias_expr</span><span class="o">.</span><span class="n">copy</span><span class="p">())</span> -</span><span id="L-201"><a href="#L-201"><span class="linenos">201</span></a> -</span><span id="L-202"><a href="#L-202"><span class="linenos">202</span></a> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">projection</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span><span class="p">):</span> -</span><span id="L-203"><a href="#L-203"><span class="linenos">203</span></a> <span class="n">replace_columns</span><span class="p">(</span><span class="n">projection</span><span class="p">)</span> -</span><span id="L-204"><a href="#L-204"><span class="linenos">204</span></a> -</span><span id="L-205"><a href="#L-205"><span class="linenos">205</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">projection</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Alias</span><span class="p">):</span> -</span><span id="L-206"><a href="#L-206"><span class="linenos">206</span></a> <span class="n">alias_to_expression</span><span class="p">[</span><span class="n">projection</span><span class="o">.</span><span class="n">alias</span><span class="p">]</span> <span class="o">=</span> <span class="p">(</span><span class="n">projection</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">i</span> <span class="o">+</span> <span class="mi">1</span><span class="p">)</span> -</span><span id="L-207"><a href="#L-207"><span class="linenos">207</span></a> -</span><span id="L-208"><a href="#L-208"><span class="linenos">208</span></a> <span class="n">replace_columns</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"where"</span><span class="p">))</span> -</span><span id="L-209"><a href="#L-209"><span class="linenos">209</span></a> <span class="n">replace_columns</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">"group"</span><span class="p">),</span> <span class="n">literal_index</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">replace_columns</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">"having"</span><span class="p">),</span> <span class="n">resolve_table</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">replace_columns</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">"qualify"</span><span class="p">),</span> <span class="n">resolve_table</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 class="n">scope</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> -</span><span id="L-213"><a href="#L-213"><span class="linenos">213</span></a> +</span><span id="L-168"><a href="#L-168"><span class="linenos">168</span></a> +</span><span id="L-169"><a href="#L-169"><span class="linenos">169</span></a><span class="k">def</span> <span class="nf">_expand_alias_refs</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">:</span> <span class="n">Resolver</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> +</span><span id="L-170"><a href="#L-170"><span class="linenos">170</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span> +</span><span id="L-171"><a href="#L-171"><span class="linenos">171</span></a> +</span><span id="L-172"><a href="#L-172"><span class="linenos">172</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> +</span><span id="L-173"><a href="#L-173"><span class="linenos">173</span></a> <span class="k">return</span> +</span><span id="L-174"><a href="#L-174"><span class="linenos">174</span></a> +</span><span id="L-175"><a href="#L-175"><span class="linenos">175</span></a> <span class="n">alias_to_expression</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">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="nb">int</span><span class="p">]]</span> <span class="o">=</span> <span class="p">{}</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="k">def</span> <span class="nf">replace_columns</span><span class="p">(</span> +</span><span id="L-178"><a href="#L-178"><span class="linenos">178</span></a> <span class="n">node</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="n">resolve_table</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span><span class="p">,</span> <span class="n">literal_index</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">False</span> +</span><span id="L-179"><a href="#L-179"><span class="linenos">179</span></a> <span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> +</span><span id="L-180"><a href="#L-180"><span class="linenos">180</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">node</span><span class="p">:</span> +</span><span id="L-181"><a href="#L-181"><span class="linenos">181</span></a> <span class="k">return</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="k">for</span> <span class="n">column</span><span class="p">,</span> <span class="o">*</span><span class="n">_</span> <span class="ow">in</span> <span class="n">walk_in_scope</span><span class="p">(</span><span class="n">node</span><span class="p">):</span> +</span><span id="L-184"><a href="#L-184"><span class="linenos">184</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">column</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-185"><a href="#L-185"><span class="linenos">185</span></a> <span class="k">continue</span> +</span><span id="L-186"><a href="#L-186"><span class="linenos">186</span></a> <span class="n">table</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> <span class="k">if</span> <span class="n">resolve_table</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> <span class="k">else</span> <span class="kc">None</span> +</span><span id="L-187"><a href="#L-187"><span class="linenos">187</span></a> <span class="n">alias_expr</span><span class="p">,</span> <span class="n">i</span> <span class="o">=</span> <span class="n">alias_to_expression</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">,</span> <span class="p">(</span><span class="kc">None</span><span class="p">,</span> <span class="mi">1</span><span class="p">))</span> +</span><span id="L-188"><a href="#L-188"><span class="linenos">188</span></a> <span class="n">double_agg</span> <span class="o">=</span> <span class="p">(</span> +</span><span id="L-189"><a href="#L-189"><span class="linenos">189</span></a> <span class="p">(</span><span class="n">alias_expr</span><span class="o">.</span><span class="n">find</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">AggFunc</span><span class="p">)</span> <span class="ow">and</span> <span class="n">column</span><span class="o">.</span><span class="n">find_ancestor</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">AggFunc</span><span class="p">))</span> +</span><span id="L-190"><a href="#L-190"><span class="linenos">190</span></a> <span class="k">if</span> <span class="n">alias_expr</span> +</span><span id="L-191"><a href="#L-191"><span class="linenos">191</span></a> <span class="k">else</span> <span class="kc">False</span> +</span><span id="L-192"><a href="#L-192"><span class="linenos">192</span></a> <span class="p">)</span> +</span><span id="L-193"><a href="#L-193"><span class="linenos">193</span></a> +</span><span id="L-194"><a href="#L-194"><span class="linenos">194</span></a> <span class="k">if</span> <span class="n">table</span> <span class="ow">and</span> <span class="p">(</span><span class="ow">not</span> <span class="n">alias_expr</span> <span class="ow">or</span> <span class="n">double_agg</span><span class="p">):</span> +</span><span id="L-195"><a href="#L-195"><span class="linenos">195</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">table</span><span class="p">)</span> +</span><span id="L-196"><a href="#L-196"><span class="linenos">196</span></a> <span class="k">elif</span> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> <span class="ow">and</span> <span class="n">alias_expr</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">double_agg</span><span class="p">:</span> +</span><span id="L-197"><a href="#L-197"><span class="linenos">197</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">alias_expr</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">)</span> <span class="ow">and</span> <span class="p">(</span><span class="n">literal_index</span> <span class="ow">or</span> <span class="n">resolve_table</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">literal_index</span><span class="p">:</span> +</span><span id="L-199"><a href="#L-199"><span class="linenos">199</span></a> <span class="n">column</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="o">.</span><span class="n">number</span><span class="p">(</span><span class="n">i</span><span class="p">))</span> +</span><span id="L-200"><a href="#L-200"><span class="linenos">200</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-201"><a href="#L-201"><span class="linenos">201</span></a> <span class="n">column</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">alias_expr</span><span class="o">.</span><span class="n">copy</span><span class="p">())</span> +</span><span id="L-202"><a href="#L-202"><span class="linenos">202</span></a> +</span><span id="L-203"><a href="#L-203"><span class="linenos">203</span></a> <span class="k">for</span> <span class="n">i</span><span class="p">,</span> <span class="n">projection</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span><span class="p">):</span> +</span><span id="L-204"><a href="#L-204"><span class="linenos">204</span></a> <span class="n">replace_columns</span><span class="p">(</span><span class="n">projection</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="nb">isinstance</span><span class="p">(</span><span class="n">projection</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Alias</span><span class="p">):</span> +</span><span id="L-207"><a href="#L-207"><span class="linenos">207</span></a> <span class="n">alias_to_expression</span><span class="p">[</span><span class="n">projection</span><span class="o">.</span><span class="n">alias</span><span class="p">]</span> <span class="o">=</span> <span class="p">(</span><span class="n">projection</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">i</span> <span class="o">+</span> <span class="mi">1</span><span class="p">)</span> +</span><span id="L-208"><a href="#L-208"><span class="linenos">208</span></a> +</span><span id="L-209"><a href="#L-209"><span class="linenos">209</span></a> <span class="n">replace_columns</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"where"</span><span class="p">))</span> +</span><span id="L-210"><a href="#L-210"><span class="linenos">210</span></a> <span class="n">replace_columns</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">"group"</span><span class="p">),</span> <span class="n">literal_index</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">replace_columns</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">"having"</span><span class="p">),</span> <span class="n">resolve_table</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 class="n">replace_columns</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">"qualify"</span><span class="p">),</span> <span class="n">resolve_table</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> +</span><span id="L-213"><a href="#L-213"><span class="linenos">213</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> </span><span id="L-214"><a href="#L-214"><span class="linenos">214</span></a> -</span><span id="L-215"><a href="#L-215"><span class="linenos">215</span></a><span class="k">def</span> <span class="nf">_expand_group_by</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">):</span> -</span><span id="L-216"><a href="#L-216"><span class="linenos">216</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span> -</span><span id="L-217"><a href="#L-217"><span class="linenos">217</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">"group"</span><span class="p">)</span> -</span><span id="L-218"><a href="#L-218"><span class="linenos">218</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">group</span><span class="p">:</span> -</span><span id="L-219"><a href="#L-219"><span class="linenos">219</span></a> <span class="k">return</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">group</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="n">_expand_positional_references</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">group</span><span class="o">.</span><span class="n">expressions</span><span class="p">))</span> -</span><span id="L-222"><a href="#L-222"><span class="linenos">222</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"group"</span><span class="p">,</span> <span class="n">group</span><span class="p">)</span> -</span><span id="L-223"><a href="#L-223"><span class="linenos">223</span></a> +</span><span id="L-215"><a href="#L-215"><span class="linenos">215</span></a> +</span><span id="L-216"><a href="#L-216"><span class="linenos">216</span></a><span class="k">def</span> <span class="nf">_expand_group_by</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">):</span> +</span><span id="L-217"><a href="#L-217"><span class="linenos">217</span></a> <span class="n">expression</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span> +</span><span id="L-218"><a href="#L-218"><span class="linenos">218</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">"group"</span><span class="p">)</span> +</span><span id="L-219"><a href="#L-219"><span class="linenos">219</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">group</span><span class="p">:</span> +</span><span id="L-220"><a href="#L-220"><span class="linenos">220</span></a> <span class="k">return</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="n">group</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="n">_expand_positional_references</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">group</span><span class="o">.</span><span class="n">expressions</span><span class="p">))</span> +</span><span id="L-223"><a href="#L-223"><span class="linenos">223</span></a> <span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"group"</span><span class="p">,</span> <span class="n">group</span><span class="p">)</span> </span><span id="L-224"><a href="#L-224"><span class="linenos">224</span></a> -</span><span id="L-225"><a href="#L-225"><span class="linenos">225</span></a><span class="k">def</span> <span class="nf">_expand_order_by</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">:</span> <span class="n">Resolver</span><span class="p">):</span> -</span><span id="L-226"><a href="#L-226"><span class="linenos">226</span></a> <span class="n">order</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"order"</span><span class="p">)</span> -</span><span id="L-227"><a href="#L-227"><span class="linenos">227</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">order</span><span class="p">:</span> -</span><span id="L-228"><a href="#L-228"><span class="linenos">228</span></a> <span class="k">return</span> -</span><span id="L-229"><a href="#L-229"><span class="linenos">229</span></a> -</span><span id="L-230"><a href="#L-230"><span class="linenos">230</span></a> <span class="n">ordereds</span> <span class="o">=</span> <span class="n">order</span><span class="o">.</span><span class="n">expressions</span> -</span><span id="L-231"><a href="#L-231"><span class="linenos">231</span></a> <span class="k">for</span> <span class="n">ordered</span><span class="p">,</span> <span class="n">new_expression</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span> -</span><span id="L-232"><a href="#L-232"><span class="linenos">232</span></a> <span class="n">ordereds</span><span class="p">,</span> -</span><span id="L-233"><a href="#L-233"><span class="linenos">233</span></a> <span class="n">_expand_positional_references</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="p">(</span><span class="n">o</span><span class="o">.</span><span class="n">this</span> <span class="k">for</span> <span class="n">o</span> <span class="ow">in</span> <span class="n">ordereds</span><span class="p">)),</span> -</span><span id="L-234"><a href="#L-234"><span class="linenos">234</span></a> <span class="p">):</span> -</span><span id="L-235"><a href="#L-235"><span class="linenos">235</span></a> <span class="k">for</span> <span class="n">agg</span> <span class="ow">in</span> <span class="n">ordered</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">AggFunc</span><span class="p">):</span> -</span><span id="L-236"><a href="#L-236"><span class="linenos">236</span></a> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">agg</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">):</span> -</span><span id="L-237"><a href="#L-237"><span class="linenos">237</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">:</span> -</span><span id="L-238"><a href="#L-238"><span class="linenos">238</span></a> <span class="n">col</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">col</span><span class="o">.</span><span class="n">name</span><span class="p">))</span> -</span><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="n">ordered</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"this"</span><span class="p">,</span> <span class="n">new_expression</span><span class="p">)</span> -</span><span id="L-241"><a href="#L-241"><span class="linenos">241</span></a> -</span><span id="L-242"><a href="#L-242"><span class="linenos">242</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"group"</span><span class="p">):</span> -</span><span id="L-243"><a href="#L-243"><span class="linenos">243</span></a> <span class="n">selects</span> <span class="o">=</span> <span class="p">{</span><span class="n">s</span><span class="o">.</span><span class="n">this</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">s</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">)</span> <span class="k">for</span> <span class="n">s</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span><span class="p">}</span> -</span><span id="L-244"><a href="#L-244"><span class="linenos">244</span></a> -</span><span id="L-245"><a href="#L-245"><span class="linenos">245</span></a> <span class="k">for</span> <span class="n">ordered</span> <span class="ow">in</span> <span class="n">ordereds</span><span class="p">:</span> -</span><span id="L-246"><a href="#L-246"><span class="linenos">246</span></a> <span class="n">ordered</span> <span class="o">=</span> <span class="n">ordered</span><span class="o">.</span><span class="n">this</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="n">ordered</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span> -</span><span id="L-249"><a href="#L-249"><span class="linenos">249</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">_select_by_pos</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">ordered</span><span class="p">)</span><span class="o">.</span><span class="n">alias</span><span class="p">)</span> -</span><span id="L-250"><a href="#L-250"><span class="linenos">250</span></a> <span class="k">if</span> <span class="n">ordered</span><span class="o">.</span><span class="n">is_int</span> -</span><span id="L-251"><a href="#L-251"><span class="linenos">251</span></a> <span class="k">else</span> <span class="n">selects</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">ordered</span><span class="p">,</span> <span class="n">ordered</span><span class="p">)</span> -</span><span id="L-252"><a href="#L-252"><span class="linenos">252</span></a> <span class="p">)</span> -</span><span id="L-253"><a href="#L-253"><span class="linenos">253</span></a> +</span><span id="L-225"><a href="#L-225"><span class="linenos">225</span></a> +</span><span id="L-226"><a href="#L-226"><span class="linenos">226</span></a><span class="k">def</span> <span class="nf">_expand_order_by</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">:</span> <span class="n">Resolver</span><span class="p">):</span> +</span><span id="L-227"><a href="#L-227"><span class="linenos">227</span></a> <span class="n">order</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"order"</span><span class="p">)</span> +</span><span id="L-228"><a href="#L-228"><span class="linenos">228</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">order</span><span class="p">:</span> +</span><span id="L-229"><a href="#L-229"><span class="linenos">229</span></a> <span class="k">return</span> +</span><span id="L-230"><a href="#L-230"><span class="linenos">230</span></a> +</span><span id="L-231"><a href="#L-231"><span class="linenos">231</span></a> <span class="n">ordereds</span> <span class="o">=</span> <span class="n">order</span><span class="o">.</span><span class="n">expressions</span> +</span><span id="L-232"><a href="#L-232"><span class="linenos">232</span></a> <span class="k">for</span> <span class="n">ordered</span><span class="p">,</span> <span class="n">new_expression</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span> +</span><span id="L-233"><a href="#L-233"><span class="linenos">233</span></a> <span class="n">ordereds</span><span class="p">,</span> +</span><span id="L-234"><a href="#L-234"><span class="linenos">234</span></a> <span class="n">_expand_positional_references</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="p">(</span><span class="n">o</span><span class="o">.</span><span class="n">this</span> <span class="k">for</span> <span class="n">o</span> <span class="ow">in</span> <span class="n">ordereds</span><span class="p">)),</span> +</span><span id="L-235"><a href="#L-235"><span class="linenos">235</span></a> <span class="p">):</span> +</span><span id="L-236"><a href="#L-236"><span class="linenos">236</span></a> <span class="k">for</span> <span class="n">agg</span> <span class="ow">in</span> <span class="n">ordered</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">AggFunc</span><span class="p">):</span> +</span><span id="L-237"><a href="#L-237"><span class="linenos">237</span></a> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">agg</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">):</span> +</span><span id="L-238"><a href="#L-238"><span class="linenos">238</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">col</span><span class="o">.</span><span class="n">table</span><span class="p">:</span> +</span><span id="L-239"><a href="#L-239"><span class="linenos">239</span></a> <span class="n">col</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">col</span><span class="o">.</span><span class="n">name</span><span class="p">))</span> +</span><span id="L-240"><a href="#L-240"><span class="linenos">240</span></a> +</span><span id="L-241"><a href="#L-241"><span class="linenos">241</span></a> <span class="n">ordered</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"this"</span><span class="p">,</span> <span class="n">new_expression</span><span class="p">)</span> +</span><span id="L-242"><a href="#L-242"><span class="linenos">242</span></a> +</span><span id="L-243"><a href="#L-243"><span class="linenos">243</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"group"</span><span class="p">):</span> +</span><span id="L-244"><a href="#L-244"><span class="linenos">244</span></a> <span class="n">selects</span> <span class="o">=</span> <span class="p">{</span><span class="n">s</span><span class="o">.</span><span class="n">this</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">s</span><span class="o">.</span><span class="n">alias_or_name</span><span class="p">)</span> <span class="k">for</span> <span class="n">s</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span><span class="p">}</span> +</span><span id="L-245"><a href="#L-245"><span class="linenos">245</span></a> +</span><span id="L-246"><a href="#L-246"><span class="linenos">246</span></a> <span class="k">for</span> <span class="n">ordered</span> <span class="ow">in</span> <span class="n">ordereds</span><span class="p">:</span> +</span><span id="L-247"><a href="#L-247"><span class="linenos">247</span></a> <span class="n">ordered</span> <span class="o">=</span> <span class="n">ordered</span><span class="o">.</span><span class="n">this</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="n">ordered</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span> +</span><span id="L-250"><a href="#L-250"><span class="linenos">250</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">_select_by_pos</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">ordered</span><span class="p">)</span><span class="o">.</span><span class="n">alias</span><span class="p">)</span> +</span><span id="L-251"><a href="#L-251"><span class="linenos">251</span></a> <span class="k">if</span> <span class="n">ordered</span><span class="o">.</span><span class="n">is_int</span> +</span><span id="L-252"><a href="#L-252"><span class="linenos">252</span></a> <span class="k">else</span> <span class="n">selects</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">ordered</span><span class="p">,</span> <span class="n">ordered</span><span class="p">)</span> +</span><span id="L-253"><a href="#L-253"><span class="linenos">253</span></a> <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">_expand_positional_references</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">expressions</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">E</span><span class="p">])</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="n">E</span><span class="p">]:</span> -</span><span id="L-256"><a href="#L-256"><span class="linenos">256</span></a> <span class="n">new_nodes</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-257"><a href="#L-257"><span class="linenos">257</span></a> <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">expressions</span><span class="p">:</span> -</span><span id="L-258"><a href="#L-258"><span class="linenos">258</span></a> <span class="k">if</span> <span class="n">node</span><span class="o">.</span><span class="n">is_int</span><span class="p">:</span> -</span><span id="L-259"><a href="#L-259"><span class="linenos">259</span></a> <span class="n">select</span> <span class="o">=</span> <span class="n">_select_by_pos</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">,</span> <span class="n">node</span><span class="p">))</span><span class="o">.</span><span class="n">this</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="nb">isinstance</span><span class="p">(</span><span class="n">select</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">):</span> -</span><span id="L-262"><a href="#L-262"><span class="linenos">262</span></a> <span class="n">new_nodes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="L-263"><a href="#L-263"><span class="linenos">263</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-264"><a href="#L-264"><span class="linenos">264</span></a> <span class="n">new_nodes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">select</span><span class="o">.</span><span class="n">copy</span><span class="p">())</span> -</span><span id="L-265"><a href="#L-265"><span class="linenos">265</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> -</span><span id="L-266"><a href="#L-266"><span class="linenos">266</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-267"><a href="#L-267"><span class="linenos">267</span></a> <span class="n">new_nodes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="L-268"><a href="#L-268"><span class="linenos">268</span></a> -</span><span id="L-269"><a href="#L-269"><span class="linenos">269</span></a> <span class="k">return</span> <span class="n">new_nodes</span> -</span><span id="L-270"><a href="#L-270"><span class="linenos">270</span></a> +</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">_expand_positional_references</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">expressions</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">E</span><span class="p">])</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="n">E</span><span class="p">]:</span> +</span><span id="L-257"><a href="#L-257"><span class="linenos">257</span></a> <span class="n">new_nodes</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-258"><a href="#L-258"><span class="linenos">258</span></a> <span class="k">for</span> <span class="n">node</span> <span class="ow">in</span> <span class="n">expressions</span><span class="p">:</span> +</span><span id="L-259"><a href="#L-259"><span class="linenos">259</span></a> <span class="k">if</span> <span class="n">node</span><span class="o">.</span><span class="n">is_int</span><span class="p">:</span> +</span><span id="L-260"><a href="#L-260"><span class="linenos">260</span></a> <span class="n">select</span> <span class="o">=</span> <span class="n">_select_by_pos</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">cast</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">,</span> <span class="n">node</span><span class="p">))</span><span class="o">.</span><span class="n">this</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="nb">isinstance</span><span class="p">(</span><span class="n">select</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">):</span> +</span><span id="L-263"><a href="#L-263"><span class="linenos">263</span></a> <span class="n">new_nodes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="L-264"><a href="#L-264"><span class="linenos">264</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-265"><a href="#L-265"><span class="linenos">265</span></a> <span class="n">new_nodes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">select</span><span class="o">.</span><span class="n">copy</span><span class="p">())</span> +</span><span id="L-266"><a href="#L-266"><span class="linenos">266</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> +</span><span id="L-267"><a href="#L-267"><span class="linenos">267</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-268"><a href="#L-268"><span class="linenos">268</span></a> <span class="n">new_nodes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="L-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">return</span> <span class="n">new_nodes</span> </span><span id="L-271"><a href="#L-271"><span class="linenos">271</span></a> -</span><span id="L-272"><a href="#L-272"><span class="linenos">272</span></a><span class="k">def</span> <span class="nf">_select_by_pos</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">node</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Alias</span><span class="p">:</span> -</span><span id="L-273"><a href="#L-273"><span class="linenos">273</span></a> <span class="k">try</span><span class="p">:</span> -</span><span id="L-274"><a href="#L-274"><span class="linenos">274</span></a> <span class="k">return</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span><span class="p">[</span><span class="nb">int</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span><span class="o">.</span><span class="n">assert_is</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Alias</span><span class="p">)</span> -</span><span id="L-275"><a href="#L-275"><span class="linenos">275</span></a> <span class="k">except</span> <span class="ne">IndexError</span><span class="p">:</span> -</span><span id="L-276"><a href="#L-276"><span class="linenos">276</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown output column: </span><span class="si">{</span><span class="n">node</span><span class="o">.</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="L-277"><a href="#L-277"><span class="linenos">277</span></a> +</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">def</span> <span class="nf">_select_by_pos</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">node</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Literal</span><span class="p">)</span> <span class="o">-></span> <span class="n">exp</span><span class="o">.</span><span class="n">Alias</span><span class="p">:</span> +</span><span id="L-274"><a href="#L-274"><span class="linenos">274</span></a> <span class="k">try</span><span class="p">:</span> +</span><span id="L-275"><a href="#L-275"><span class="linenos">275</span></a> <span class="k">return</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span><span class="p">[</span><span class="nb">int</span><span class="p">(</span><span class="n">node</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> <span class="o">-</span> <span class="mi">1</span><span class="p">]</span><span class="o">.</span><span class="n">assert_is</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Alias</span><span class="p">)</span> +</span><span id="L-276"><a href="#L-276"><span class="linenos">276</span></a> <span class="k">except</span> <span class="ne">IndexError</span><span class="p">:</span> +</span><span id="L-277"><a href="#L-277"><span class="linenos">277</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown output column: </span><span class="si">{</span><span class="n">node</span><span class="o">.</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> </span><span id="L-278"><a href="#L-278"><span class="linenos">278</span></a> -</span><span id="L-279"><a href="#L-279"><span class="linenos">279</span></a><span class="k">def</span> <span class="nf">_qualify_columns</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">:</span> <span class="n">Resolver</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> -</span><span id="L-280"><a href="#L-280"><span class="linenos">280</span></a><span class="w"> </span><span class="sd">"""Disambiguate columns, ensuring each column specifies a source"""</span> -</span><span id="L-281"><a href="#L-281"><span class="linenos">281</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span> -</span><span id="L-282"><a href="#L-282"><span class="linenos">282</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> -</span><span id="L-283"><a href="#L-283"><span class="linenos">283</span></a> <span class="n">column_name</span> <span class="o">=</span> <span class="n">column</span><span class="o">.</span><span class="n">name</span> -</span><span id="L-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">if</span> <span class="n">column_table</span> <span class="ow">and</span> <span class="n">column_table</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> -</span><span id="L-286"><a href="#L-286"><span class="linenos">286</span></a> <span class="n">source_columns</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">column_table</span><span class="p">)</span> -</span><span id="L-287"><a href="#L-287"><span class="linenos">287</span></a> <span class="k">if</span> <span class="n">source_columns</span> <span class="ow">and</span> <span class="n">column_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">source_columns</span> <span class="ow">and</span> <span class="s2">"*"</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">source_columns</span><span class="p">:</span> -</span><span id="L-288"><a href="#L-288"><span class="linenos">288</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown column: </span><span class="si">{</span><span class="n">column_name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="L-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="k">if</span> <span class="ow">not</span> <span class="n">column_table</span><span class="p">:</span> -</span><span id="L-291"><a href="#L-291"><span class="linenos">291</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">pivots</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">find_ancestor</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Pivot</span><span class="p">):</span> -</span><span id="L-292"><a href="#L-292"><span class="linenos">292</span></a> <span class="c1"># If the column is under the Pivot expression, we need to qualify it</span> -</span><span id="L-293"><a href="#L-293"><span class="linenos">293</span></a> <span class="c1"># using the name of the pivoted source instead of the pivot's alias</span> -</span><span id="L-294"><a href="#L-294"><span class="linenos">294</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span><span class="p">))</span> -</span><span id="L-295"><a href="#L-295"><span class="linenos">295</span></a> <span class="k">continue</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="n">column_table</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">column_name</span><span class="p">)</span> -</span><span id="L-298"><a href="#L-298"><span class="linenos">298</span></a> -</span><span id="L-299"><a href="#L-299"><span class="linenos">299</span></a> <span class="c1"># column_table can be a '' because bigquery unnest has no table alias</span> -</span><span id="L-300"><a href="#L-300"><span class="linenos">300</span></a> <span class="k">if</span> <span class="n">column_table</span><span class="p">:</span> -</span><span id="L-301"><a href="#L-301"><span class="linenos">301</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">column_table</span><span class="p">)</span> -</span><span id="L-302"><a href="#L-302"><span class="linenos">302</span></a> <span class="k">elif</span> <span class="n">column_table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span> <span class="ow">and</span> <span class="p">(</span> -</span><span id="L-303"><a href="#L-303"><span class="linenos">303</span></a> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">parent</span> <span class="ow">or</span> <span class="n">column_table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">sources</span> -</span><span id="L-304"><a href="#L-304"><span class="linenos">304</span></a> <span class="p">):</span> -</span><span id="L-305"><a href="#L-305"><span class="linenos">305</span></a> <span class="c1"># structs are used like tables (e.g. "struct"."field"), so they need to be qualified</span> -</span><span id="L-306"><a href="#L-306"><span class="linenos">306</span></a> <span class="c1"># separately and represented as dot(dot(...(<table>.<column>, field1), field2, ...))</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="n">root</span><span class="p">,</span> <span class="o">*</span><span class="n">parts</span> <span class="o">=</span> <span class="n">column</span><span class="o">.</span><span class="n">parts</span> -</span><span id="L-309"><a href="#L-309"><span class="linenos">309</span></a> -</span><span id="L-310"><a href="#L-310"><span class="linenos">310</span></a> <span class="k">if</span> <span class="n">root</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> -</span><span id="L-311"><a href="#L-311"><span class="linenos">311</span></a> <span class="c1"># struct is already qualified, but we still need to change the AST representation</span> -</span><span id="L-312"><a href="#L-312"><span class="linenos">312</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">root</span> -</span><span id="L-313"><a href="#L-313"><span class="linenos">313</span></a> <span class="n">root</span><span class="p">,</span> <span class="o">*</span><span class="n">parts</span> <span class="o">=</span> <span class="n">parts</span> -</span><span id="L-314"><a href="#L-314"><span class="linenos">314</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-315"><a href="#L-315"><span class="linenos">315</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">root</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> -</span><span id="L-316"><a href="#L-316"><span class="linenos">316</span></a> -</span><span id="L-317"><a href="#L-317"><span class="linenos">317</span></a> <span class="k">if</span> <span class="n">column_table</span><span class="p">:</span> -</span><span id="L-318"><a href="#L-318"><span class="linenos">318</span></a> <span class="n">column</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Dot</span><span class="o">.</span><span class="n">build</span><span class="p">([</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">root</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">column_table</span><span class="p">),</span> <span class="o">*</span><span class="n">parts</span><span class="p">]))</span> -</span><span id="L-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">for</span> <span class="n">pivot</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">pivots</span><span class="p">:</span> -</span><span id="L-321"><a href="#L-321"><span class="linenos">321</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">pivot</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">):</span> -</span><span id="L-322"><a href="#L-322"><span class="linenos">322</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> <span class="ow">and</span> <span class="n">column</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">resolver</span><span class="o">.</span><span class="n">all_columns</span><span class="p">:</span> -</span><span id="L-323"><a href="#L-323"><span class="linenos">323</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> -</span><span id="L-324"><a href="#L-324"><span class="linenos">324</span></a> <span class="k">if</span> <span class="n">column_table</span><span class="p">:</span> -</span><span id="L-325"><a href="#L-325"><span class="linenos">325</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">column_table</span><span class="p">)</span> -</span><span id="L-326"><a href="#L-326"><span class="linenos">326</span></a> +</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">def</span> <span class="nf">_qualify_columns</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">:</span> <span class="n">Resolver</span><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> +</span><span id="L-281"><a href="#L-281"><span class="linenos">281</span></a><span class="w"> </span><span class="sd">"""Disambiguate columns, ensuring each column specifies a source"""</span> +</span><span id="L-282"><a href="#L-282"><span class="linenos">282</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span> +</span><span id="L-283"><a href="#L-283"><span class="linenos">283</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> +</span><span id="L-284"><a href="#L-284"><span class="linenos">284</span></a> <span class="n">column_name</span> <span class="o">=</span> <span class="n">column</span><span class="o">.</span><span class="n">name</span> +</span><span id="L-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="k">if</span> <span class="n">column_table</span> <span class="ow">and</span> <span class="n">column_table</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> +</span><span id="L-287"><a href="#L-287"><span class="linenos">287</span></a> <span class="n">source_columns</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">column_table</span><span class="p">)</span> +</span><span id="L-288"><a href="#L-288"><span class="linenos">288</span></a> <span class="k">if</span> <span class="n">source_columns</span> <span class="ow">and</span> <span class="n">column_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">source_columns</span> <span class="ow">and</span> <span class="s2">"*"</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">source_columns</span><span class="p">:</span> +</span><span id="L-289"><a href="#L-289"><span class="linenos">289</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown column: </span><span class="si">{</span><span class="n">column_name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="L-290"><a href="#L-290"><span class="linenos">290</span></a> +</span><span id="L-291"><a href="#L-291"><span class="linenos">291</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">column_table</span><span class="p">:</span> +</span><span id="L-292"><a href="#L-292"><span class="linenos">292</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">pivots</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">find_ancestor</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Pivot</span><span class="p">):</span> +</span><span id="L-293"><a href="#L-293"><span class="linenos">293</span></a> <span class="c1"># If the column is under the Pivot expression, we need to qualify it</span> +</span><span id="L-294"><a href="#L-294"><span class="linenos">294</span></a> <span class="c1"># using the name of the pivoted source instead of the pivot's alias</span> +</span><span id="L-295"><a href="#L-295"><span class="linenos">295</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span><span class="p">))</span> +</span><span id="L-296"><a href="#L-296"><span class="linenos">296</span></a> <span class="k">continue</span> +</span><span id="L-297"><a href="#L-297"><span class="linenos">297</span></a> +</span><span id="L-298"><a href="#L-298"><span class="linenos">298</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">column_name</span><span class="p">)</span> +</span><span id="L-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="c1"># column_table can be a '' because bigquery unnest has no table alias</span> +</span><span id="L-301"><a href="#L-301"><span class="linenos">301</span></a> <span class="k">if</span> <span class="n">column_table</span><span class="p">:</span> +</span><span id="L-302"><a href="#L-302"><span class="linenos">302</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">column_table</span><span class="p">)</span> +</span><span id="L-303"><a href="#L-303"><span class="linenos">303</span></a> <span class="k">elif</span> <span class="n">column_table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span> <span class="ow">and</span> <span class="p">(</span> +</span><span id="L-304"><a href="#L-304"><span class="linenos">304</span></a> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">parent</span> <span class="ow">or</span> <span class="n">column_table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">sources</span> +</span><span id="L-305"><a href="#L-305"><span class="linenos">305</span></a> <span class="p">):</span> +</span><span id="L-306"><a href="#L-306"><span class="linenos">306</span></a> <span class="c1"># structs are used like tables (e.g. "struct"."field"), so they need to be qualified</span> +</span><span id="L-307"><a href="#L-307"><span class="linenos">307</span></a> <span class="c1"># separately and represented as dot(dot(...(<table>.<column>, field1), field2, ...))</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="n">root</span><span class="p">,</span> <span class="o">*</span><span class="n">parts</span> <span class="o">=</span> <span class="n">column</span><span class="o">.</span><span class="n">parts</span> +</span><span id="L-310"><a href="#L-310"><span class="linenos">310</span></a> +</span><span id="L-311"><a href="#L-311"><span class="linenos">311</span></a> <span class="k">if</span> <span class="n">root</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> +</span><span id="L-312"><a href="#L-312"><span class="linenos">312</span></a> <span class="c1"># struct is already qualified, but we still need to change the AST representation</span> +</span><span id="L-313"><a href="#L-313"><span class="linenos">313</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">root</span> +</span><span id="L-314"><a href="#L-314"><span class="linenos">314</span></a> <span class="n">root</span><span class="p">,</span> <span class="o">*</span><span class="n">parts</span> <span class="o">=</span> <span class="n">parts</span> +</span><span id="L-315"><a href="#L-315"><span class="linenos">315</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-316"><a href="#L-316"><span class="linenos">316</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">root</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-317"><a href="#L-317"><span class="linenos">317</span></a> +</span><span id="L-318"><a href="#L-318"><span class="linenos">318</span></a> <span class="k">if</span> <span class="n">column_table</span><span class="p">:</span> +</span><span id="L-319"><a href="#L-319"><span class="linenos">319</span></a> <span class="n">column</span><span class="o">.</span><span class="n">replace</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Dot</span><span class="o">.</span><span class="n">build</span><span class="p">([</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">root</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">column_table</span><span class="p">),</span> <span class="o">*</span><span class="n">parts</span><span class="p">]))</span> +</span><span id="L-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">for</span> <span class="n">pivot</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">pivots</span><span class="p">:</span> +</span><span id="L-322"><a href="#L-322"><span class="linenos">322</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">pivot</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">):</span> +</span><span id="L-323"><a href="#L-323"><span class="linenos">323</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">column</span><span class="o">.</span><span class="n">table</span> <span class="ow">and</span> <span class="n">column</span><span class="o">.</span><span class="n">name</span> <span class="ow">in</span> <span class="n">resolver</span><span class="o">.</span><span class="n">all_columns</span><span class="p">:</span> +</span><span id="L-324"><a href="#L-324"><span class="linenos">324</span></a> <span class="n">column_table</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_table</span><span class="p">(</span><span class="n">column</span><span class="o">.</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-325"><a href="#L-325"><span class="linenos">325</span></a> <span class="k">if</span> <span class="n">column_table</span><span class="p">:</span> +</span><span id="L-326"><a href="#L-326"><span class="linenos">326</span></a> <span class="n">column</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"table"</span><span class="p">,</span> <span class="n">column_table</span><span class="p">)</span> </span><span id="L-327"><a href="#L-327"><span class="linenos">327</span></a> -</span><span id="L-328"><a href="#L-328"><span class="linenos">328</span></a><span class="k">def</span> <span class="nf">_expand_stars</span><span class="p">(</span> -</span><span id="L-329"><a href="#L-329"><span class="linenos">329</span></a> <span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">:</span> <span class="n">Resolver</span><span class="p">,</span> <span class="n">using_column_tables</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">Any</span><span class="p">]</span> -</span><span id="L-330"><a href="#L-330"><span class="linenos">330</span></a><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> -</span><span id="L-331"><a href="#L-331"><span class="linenos">331</span></a><span class="w"> </span><span class="sd">"""Expand stars to lists of column selections"""</span> -</span><span id="L-332"><a href="#L-332"><span class="linenos">332</span></a> -</span><span id="L-333"><a href="#L-333"><span class="linenos">333</span></a> <span class="n">new_selections</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-334"><a href="#L-334"><span class="linenos">334</span></a> <span class="n">except_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">int</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">Set</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-335"><a href="#L-335"><span class="linenos">335</span></a> <span class="n">replace_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">int</span><span class="p">,</span> <span class="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="nb">str</span><span class="p">]]</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="L-336"><a href="#L-336"><span class="linenos">336</span></a> <span class="n">coalesced_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span> -</span><span id="L-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="c1"># TODO: handle optimization of multiple PIVOTs (and possibly UNPIVOTs) in the future</span> -</span><span id="L-339"><a href="#L-339"><span class="linenos">339</span></a> <span class="n">pivot_columns</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-340"><a href="#L-340"><span class="linenos">340</span></a> <span class="n">pivot_output_columns</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-341"><a href="#L-341"><span class="linenos">341</span></a> <span class="n">pivot</span> <span class="o">=</span> <span class="n">t</span><span class="o">.</span><span class="n">cast</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">Pivot</span><span class="p">],</span> <span class="n">seq_get</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">pivots</span><span class="p">,</span> <span class="mi">0</span><span class="p">))</span> -</span><span id="L-342"><a href="#L-342"><span class="linenos">342</span></a> -</span><span id="L-343"><a href="#L-343"><span class="linenos">343</span></a> <span class="n">has_pivoted_source</span> <span class="o">=</span> <span class="n">pivot</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">pivot</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">"unpivot"</span><span class="p">)</span> -</span><span id="L-344"><a href="#L-344"><span class="linenos">344</span></a> <span class="k">if</span> <span class="n">pivot</span> <span class="ow">and</span> <span class="n">has_pivoted_source</span><span class="p">:</span> -</span><span id="L-345"><a href="#L-345"><span class="linenos">345</span></a> <span class="n">pivot_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">col</span><span class="o">.</span><span class="n">output_name</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">pivot</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">))</span> +</span><span id="L-328"><a href="#L-328"><span class="linenos">328</span></a> +</span><span id="L-329"><a href="#L-329"><span class="linenos">329</span></a><span class="k">def</span> <span class="nf">_expand_stars</span><span class="p">(</span> +</span><span id="L-330"><a href="#L-330"><span class="linenos">330</span></a> <span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> +</span><span id="L-331"><a href="#L-331"><span class="linenos">331</span></a> <span class="n">resolver</span><span class="p">:</span> <span class="n">Resolver</span><span class="p">,</span> +</span><span id="L-332"><a href="#L-332"><span class="linenos">332</span></a> <span class="n">using_column_tables</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">Any</span><span class="p">],</span> +</span><span id="L-333"><a href="#L-333"><span class="linenos">333</span></a> <span class="n">pseudocolumns</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="nb">str</span><span class="p">],</span> +</span><span id="L-334"><a href="#L-334"><span class="linenos">334</span></a><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> +</span><span id="L-335"><a href="#L-335"><span class="linenos">335</span></a><span class="w"> </span><span class="sd">"""Expand stars to lists of column selections"""</span> +</span><span id="L-336"><a href="#L-336"><span class="linenos">336</span></a> +</span><span id="L-337"><a href="#L-337"><span class="linenos">337</span></a> <span class="n">new_selections</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-338"><a href="#L-338"><span class="linenos">338</span></a> <span class="n">except_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">int</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">Set</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-339"><a href="#L-339"><span class="linenos">339</span></a> <span class="n">replace_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">int</span><span class="p">,</span> <span class="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="nb">str</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="n">coalesced_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">()</span> +</span><span id="L-341"><a href="#L-341"><span class="linenos">341</span></a> +</span><span id="L-342"><a href="#L-342"><span class="linenos">342</span></a> <span class="c1"># TODO: handle optimization of multiple PIVOTs (and possibly UNPIVOTs) in the future</span> +</span><span id="L-343"><a href="#L-343"><span class="linenos">343</span></a> <span class="n">pivot_columns</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-344"><a href="#L-344"><span class="linenos">344</span></a> <span class="n">pivot_output_columns</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-345"><a href="#L-345"><span class="linenos">345</span></a> <span class="n">pivot</span> <span class="o">=</span> <span class="n">t</span><span class="o">.</span><span class="n">cast</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">Pivot</span><span class="p">],</span> <span class="n">seq_get</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">pivots</span><span class="p">,</span> <span class="mi">0</span><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">pivot_output_columns</span> <span class="o">=</span> <span class="p">[</span><span class="n">col</span><span class="o">.</span><span class="n">output_name</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">pivot</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">"columns"</span><span class="p">,</span> <span class="p">[])]</span> -</span><span id="L-348"><a href="#L-348"><span class="linenos">348</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">pivot_output_columns</span><span class="p">:</span> -</span><span id="L-349"><a href="#L-349"><span class="linenos">349</span></a> <span class="n">pivot_output_columns</span> <span class="o">=</span> <span class="p">[</span><span class="n">col</span><span class="o">.</span><span class="n">alias_or_name</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">pivot</span><span class="o">.</span><span class="n">expressions</span><span class="p">]</span> +</span><span id="L-347"><a href="#L-347"><span class="linenos">347</span></a> <span class="n">has_pivoted_source</span> <span class="o">=</span> <span class="n">pivot</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">pivot</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">"unpivot"</span><span class="p">)</span> +</span><span id="L-348"><a href="#L-348"><span class="linenos">348</span></a> <span class="k">if</span> <span class="n">pivot</span> <span class="ow">and</span> <span class="n">has_pivoted_source</span><span class="p">:</span> +</span><span id="L-349"><a href="#L-349"><span class="linenos">349</span></a> <span class="n">pivot_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">col</span><span class="o">.</span><span class="n">output_name</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">pivot</span><span class="o">.</span><span class="n">find_all</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Column</span><span class="p">))</span> </span><span id="L-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">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span><span class="p">:</span> -</span><span id="L-352"><a href="#L-352"><span class="linenos">352</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Star</span><span class="p">):</span> -</span><span id="L-353"><a href="#L-353"><span class="linenos">353</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">)</span> -</span><span id="L-354"><a href="#L-354"><span class="linenos">354</span></a> <span class="n">_add_except_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">except_columns</span><span class="p">)</span> -</span><span id="L-355"><a href="#L-355"><span class="linenos">355</span></a> <span class="n">_add_replace_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">replace_columns</span><span class="p">)</span> -</span><span id="L-356"><a href="#L-356"><span class="linenos">356</span></a> <span class="k">elif</span> <span class="n">expression</span><span class="o">.</span><span class="n">is_star</span><span class="p">:</span> -</span><span id="L-357"><a href="#L-357"><span class="linenos">357</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="p">[</span><span class="n">expression</span><span class="o">.</span><span class="n">table</span><span class="p">]</span> -</span><span id="L-358"><a href="#L-358"><span class="linenos">358</span></a> <span class="n">_add_except_columns</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">except_columns</span><span class="p">)</span> -</span><span id="L-359"><a href="#L-359"><span class="linenos">359</span></a> <span class="n">_add_replace_columns</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">replace_columns</span><span class="p">)</span> -</span><span id="L-360"><a href="#L-360"><span class="linenos">360</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-361"><a href="#L-361"><span class="linenos">361</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-362"><a href="#L-362"><span class="linenos">362</span></a> <span class="k">continue</span> -</span><span id="L-363"><a href="#L-363"><span class="linenos">363</span></a> -</span><span id="L-364"><a href="#L-364"><span class="linenos">364</span></a> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> -</span><span id="L-365"><a href="#L-365"><span class="linenos">365</span></a> <span class="k">if</span> <span class="n">table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> -</span><span id="L-366"><a href="#L-366"><span class="linenos">366</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: </span><span class="si">{</span><span class="n">table</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="L-351"><a href="#L-351"><span class="linenos">351</span></a> <span class="n">pivot_output_columns</span> <span class="o">=</span> <span class="p">[</span><span class="n">col</span><span class="o">.</span><span class="n">output_name</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">pivot</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">"columns"</span><span class="p">,</span> <span class="p">[])]</span> +</span><span id="L-352"><a href="#L-352"><span class="linenos">352</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">pivot_output_columns</span><span class="p">:</span> +</span><span id="L-353"><a href="#L-353"><span class="linenos">353</span></a> <span class="n">pivot_output_columns</span> <span class="o">=</span> <span class="p">[</span><span class="n">col</span><span class="o">.</span><span class="n">alias_or_name</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">pivot</span><span class="o">.</span><span class="n">expressions</span><span class="p">]</span> +</span><span id="L-354"><a href="#L-354"><span class="linenos">354</span></a> +</span><span id="L-355"><a href="#L-355"><span class="linenos">355</span></a> <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span><span class="p">:</span> +</span><span id="L-356"><a href="#L-356"><span class="linenos">356</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Star</span><span class="p">):</span> +</span><span id="L-357"><a href="#L-357"><span class="linenos">357</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">)</span> +</span><span id="L-358"><a href="#L-358"><span class="linenos">358</span></a> <span class="n">_add_except_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">except_columns</span><span class="p">)</span> +</span><span id="L-359"><a href="#L-359"><span class="linenos">359</span></a> <span class="n">_add_replace_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">replace_columns</span><span class="p">)</span> +</span><span id="L-360"><a href="#L-360"><span class="linenos">360</span></a> <span class="k">elif</span> <span class="n">expression</span><span class="o">.</span><span class="n">is_star</span><span class="p">:</span> +</span><span id="L-361"><a href="#L-361"><span class="linenos">361</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="p">[</span><span class="n">expression</span><span class="o">.</span><span class="n">table</span><span class="p">]</span> +</span><span id="L-362"><a href="#L-362"><span class="linenos">362</span></a> <span class="n">_add_except_columns</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">except_columns</span><span class="p">)</span> +</span><span id="L-363"><a href="#L-363"><span class="linenos">363</span></a> <span class="n">_add_replace_columns</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">tables</span><span class="p">,</span> <span class="n">replace_columns</span><span class="p">)</span> +</span><span id="L-364"><a href="#L-364"><span class="linenos">364</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-365"><a href="#L-365"><span class="linenos">365</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="L-366"><a href="#L-366"><span class="linenos">366</span></a> <span class="k">continue</span> </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="n">columns</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">table</span><span class="p">,</span> <span class="n">only_visible</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> -</span><span id="L-369"><a href="#L-369"><span class="linenos">369</span></a> -</span><span id="L-370"><a href="#L-370"><span class="linenos">370</span></a> <span class="c1"># The _PARTITIONTIME and _PARTITIONDATE pseudo-columns are not returned by a SELECT * statement</span> -</span><span id="L-371"><a href="#L-371"><span class="linenos">371</span></a> <span class="c1"># https://cloud.google.com/bigquery/docs/querying-partitioned-tables#query_an_ingestion-time_partitioned_table</span> -</span><span id="L-372"><a href="#L-372"><span class="linenos">372</span></a> <span class="k">if</span> <span class="n">resolver</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">dialect</span> <span class="o">==</span> <span class="s2">"bigquery"</span><span class="p">:</span> -</span><span id="L-373"><a href="#L-373"><span class="linenos">373</span></a> <span class="n">columns</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="n">name</span> -</span><span id="L-375"><a href="#L-375"><span class="linenos">375</span></a> <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">columns</span> -</span><span id="L-376"><a href="#L-376"><span class="linenos">376</span></a> <span class="k">if</span> <span class="n">name</span><span class="o">.</span><span class="n">upper</span><span class="p">()</span> <span class="ow">not</span> <span class="ow">in</span> <span class="p">(</span><span class="s2">"_PARTITIONTIME"</span><span class="p">,</span> <span class="s2">"_PARTITIONDATE"</span><span class="p">)</span> -</span><span id="L-377"><a href="#L-377"><span class="linenos">377</span></a> <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">if</span> <span class="n">columns</span> <span class="ow">and</span> <span class="s2">"*"</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> -</span><span id="L-380"><a href="#L-380"><span class="linenos">380</span></a> <span class="k">if</span> <span class="n">pivot</span> <span class="ow">and</span> <span class="n">has_pivoted_source</span> <span class="ow">and</span> <span class="n">pivot_columns</span> <span class="ow">and</span> <span class="n">pivot_output_columns</span><span class="p">:</span> -</span><span id="L-381"><a href="#L-381"><span class="linenos">381</span></a> <span class="n">implicit_columns</span> <span class="o">=</span> <span class="p">[</span><span class="n">col</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">columns</span> <span class="k">if</span> <span class="n">col</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">pivot_columns</span><span class="p">]</span> -</span><span id="L-382"><a href="#L-382"><span class="linenos">382</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span> -</span><span id="L-383"><a href="#L-383"><span class="linenos">383</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">alias_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">pivot</span><span class="o">.</span><span class="n">alias</span><span class="p">),</span> <span class="n">name</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> -</span><span id="L-384"><a href="#L-384"><span class="linenos">384</span></a> <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">implicit_columns</span> <span class="o">+</span> <span class="n">pivot_output_columns</span> -</span><span id="L-385"><a href="#L-385"><span class="linenos">385</span></a> <span class="p">)</span> -</span><span id="L-386"><a href="#L-386"><span class="linenos">386</span></a> <span class="k">continue</span> -</span><span id="L-387"><a href="#L-387"><span class="linenos">387</span></a> -</span><span id="L-388"><a href="#L-388"><span class="linenos">388</span></a> <span class="n">table_id</span> <span class="o">=</span> <span class="nb">id</span><span class="p">(</span><span class="n">table</span><span class="p">)</span> -</span><span id="L-389"><a href="#L-389"><span class="linenos">389</span></a> <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> -</span><span id="L-390"><a href="#L-390"><span class="linenos">390</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">using_column_tables</span> <span class="ow">and</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">using_column_tables</span><span class="p">[</span><span class="n">name</span><span class="p">]:</span> -</span><span id="L-391"><a href="#L-391"><span class="linenos">391</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">coalesced_columns</span><span class="p">:</span> -</span><span id="L-392"><a href="#L-392"><span class="linenos">392</span></a> <span class="k">continue</span> -</span><span id="L-393"><a href="#L-393"><span class="linenos">393</span></a> -</span><span id="L-394"><a href="#L-394"><span class="linenos">394</span></a> <span class="n">coalesced_columns</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">name</span><span class="p">)</span> -</span><span id="L-395"><a href="#L-395"><span class="linenos">395</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="n">using_column_tables</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> -</span><span id="L-396"><a href="#L-396"><span class="linenos">396</span></a> <span class="n">coalesce</span> <span class="o">=</span> <span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">table</span><span class="p">)</span> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">]</span> -</span><span id="L-397"><a href="#L-397"><span class="linenos">397</span></a> -</span><span id="L-398"><a href="#L-398"><span class="linenos">398</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> -</span><span id="L-399"><a href="#L-399"><span class="linenos">399</span></a> <span class="n">alias</span><span class="p">(</span> -</span><span id="L-400"><a href="#L-400"><span class="linenos">400</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Coalesce</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">coalesce</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">expressions</span><span class="o">=</span><span class="n">coalesce</span><span class="p">[</span><span class="mi">1</span><span class="p">:]),</span> -</span><span id="L-401"><a href="#L-401"><span class="linenos">401</span></a> <span class="n">alias</span><span class="o">=</span><span class="n">name</span><span class="p">,</span> -</span><span id="L-402"><a href="#L-402"><span class="linenos">402</span></a> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> -</span><span id="L-403"><a href="#L-403"><span class="linenos">403</span></a> <span class="p">)</span> -</span><span id="L-404"><a href="#L-404"><span class="linenos">404</span></a> <span class="p">)</span> -</span><span id="L-405"><a href="#L-405"><span class="linenos">405</span></a> <span class="k">elif</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">except_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_id</span><span class="p">,</span> <span class="nb">set</span><span class="p">()):</span> -</span><span id="L-406"><a href="#L-406"><span class="linenos">406</span></a> <span class="n">alias_</span> <span class="o">=</span> <span class="n">replace_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_id</span><span class="p">,</span> <span class="p">{})</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span> -</span><span id="L-407"><a href="#L-407"><span class="linenos">407</span></a> <span class="n">column</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">table</span><span class="p">)</span> -</span><span id="L-408"><a href="#L-408"><span class="linenos">408</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> -</span><span id="L-409"><a href="#L-409"><span class="linenos">409</span></a> <span class="n">alias</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="n">alias_</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> <span class="k">if</span> <span class="n">alias_</span> <span class="o">!=</span> <span class="n">name</span> <span class="k">else</span> <span class="n">column</span> -</span><span id="L-410"><a href="#L-410"><span class="linenos">410</span></a> <span class="p">)</span> -</span><span id="L-411"><a href="#L-411"><span class="linenos">411</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-412"><a href="#L-412"><span class="linenos">412</span></a> <span class="k">return</span> -</span><span id="L-413"><a href="#L-413"><span class="linenos">413</span></a> -</span><span id="L-414"><a href="#L-414"><span class="linenos">414</span></a> <span class="c1"># Ensures we don't overwrite the initial selections with an empty list</span> -</span><span id="L-415"><a href="#L-415"><span class="linenos">415</span></a> <span class="k">if</span> <span class="n">new_selections</span><span class="p">:</span> -</span><span id="L-416"><a href="#L-416"><span class="linenos">416</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="n">new_selections</span><span class="p">)</span> -</span><span id="L-417"><a href="#L-417"><span class="linenos">417</span></a> -</span><span id="L-418"><a href="#L-418"><span class="linenos">418</span></a> -</span><span id="L-419"><a href="#L-419"><span class="linenos">419</span></a><span class="k">def</span> <span class="nf">_add_except_columns</span><span class="p">(</span> -</span><span id="L-420"><a href="#L-420"><span class="linenos">420</span></a> <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">tables</span><span class="p">,</span> <span class="n">except_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">int</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">Set</span><span class="p">[</span><span class="nb">str</span><span class="p">]]</span> -</span><span id="L-421"><a href="#L-421"><span class="linenos">421</span></a><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> -</span><span id="L-422"><a href="#L-422"><span class="linenos">422</span></a> <span class="n">except_</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"except"</span><span class="p">)</span> -</span><span id="L-423"><a href="#L-423"><span class="linenos">423</span></a> -</span><span id="L-424"><a href="#L-424"><span class="linenos">424</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">except_</span><span class="p">:</span> -</span><span id="L-425"><a href="#L-425"><span class="linenos">425</span></a> <span class="k">return</span> +</span><span id="L-368"><a href="#L-368"><span class="linenos">368</span></a> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> +</span><span id="L-369"><a href="#L-369"><span class="linenos">369</span></a> <span class="k">if</span> <span class="n">table</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> +</span><span id="L-370"><a href="#L-370"><span class="linenos">370</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: </span><span class="si">{</span><span class="n">table</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="L-371"><a href="#L-371"><span class="linenos">371</span></a> +</span><span id="L-372"><a href="#L-372"><span class="linenos">372</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="n">resolver</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">table</span><span class="p">,</span> <span class="n">only_visible</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> +</span><span id="L-373"><a href="#L-373"><span class="linenos">373</span></a> +</span><span id="L-374"><a href="#L-374"><span class="linenos">374</span></a> <span class="k">if</span> <span class="n">pseudocolumns</span><span class="p">:</span> +</span><span id="L-375"><a href="#L-375"><span class="linenos">375</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="p">[</span><span class="n">name</span> <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">columns</span> <span class="k">if</span> <span class="n">name</span><span class="o">.</span><span class="n">upper</span><span class="p">()</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">pseudocolumns</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">if</span> <span class="n">columns</span> <span class="ow">and</span> <span class="s2">"*"</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> +</span><span id="L-378"><a href="#L-378"><span class="linenos">378</span></a> <span class="k">if</span> <span class="n">pivot</span> <span class="ow">and</span> <span class="n">has_pivoted_source</span> <span class="ow">and</span> <span class="n">pivot_columns</span> <span class="ow">and</span> <span class="n">pivot_output_columns</span><span class="p">:</span> +</span><span id="L-379"><a href="#L-379"><span class="linenos">379</span></a> <span class="n">implicit_columns</span> <span class="o">=</span> <span class="p">[</span><span class="n">col</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="n">columns</span> <span class="k">if</span> <span class="n">col</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">pivot_columns</span><span class="p">]</span> +</span><span id="L-380"><a href="#L-380"><span class="linenos">380</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span> +</span><span id="L-381"><a href="#L-381"><span class="linenos">381</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">alias_</span><span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">pivot</span><span class="o">.</span><span class="n">alias</span><span class="p">),</span> <span class="n">name</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> +</span><span id="L-382"><a href="#L-382"><span class="linenos">382</span></a> <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">implicit_columns</span> <span class="o">+</span> <span class="n">pivot_output_columns</span> +</span><span id="L-383"><a href="#L-383"><span class="linenos">383</span></a> <span class="p">)</span> +</span><span id="L-384"><a href="#L-384"><span class="linenos">384</span></a> <span class="k">continue</span> +</span><span id="L-385"><a href="#L-385"><span class="linenos">385</span></a> +</span><span id="L-386"><a href="#L-386"><span class="linenos">386</span></a> <span class="n">table_id</span> <span class="o">=</span> <span class="nb">id</span><span class="p">(</span><span class="n">table</span><span class="p">)</span> +</span><span id="L-387"><a href="#L-387"><span class="linenos">387</span></a> <span class="k">for</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> +</span><span id="L-388"><a href="#L-388"><span class="linenos">388</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">using_column_tables</span> <span class="ow">and</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">using_column_tables</span><span class="p">[</span><span class="n">name</span><span class="p">]:</span> +</span><span id="L-389"><a href="#L-389"><span class="linenos">389</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">in</span> <span class="n">coalesced_columns</span><span class="p">:</span> +</span><span id="L-390"><a href="#L-390"><span class="linenos">390</span></a> <span class="k">continue</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="n">coalesced_columns</span><span class="o">.</span><span class="n">add</span><span class="p">(</span><span class="n">name</span><span class="p">)</span> +</span><span id="L-393"><a href="#L-393"><span class="linenos">393</span></a> <span class="n">tables</span> <span class="o">=</span> <span class="n">using_column_tables</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> +</span><span id="L-394"><a href="#L-394"><span class="linenos">394</span></a> <span class="n">coalesce</span> <span class="o">=</span> <span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">table</span><span class="p">)</span> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">]</span> +</span><span id="L-395"><a href="#L-395"><span class="linenos">395</span></a> +</span><span id="L-396"><a href="#L-396"><span class="linenos">396</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> +</span><span id="L-397"><a href="#L-397"><span class="linenos">397</span></a> <span class="n">alias</span><span class="p">(</span> +</span><span id="L-398"><a href="#L-398"><span class="linenos">398</span></a> <span class="n">exp</span><span class="o">.</span><span class="n">Coalesce</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">coalesce</span><span class="p">[</span><span class="mi">0</span><span class="p">],</span> <span class="n">expressions</span><span class="o">=</span><span class="n">coalesce</span><span class="p">[</span><span class="mi">1</span><span class="p">:]),</span> +</span><span id="L-399"><a href="#L-399"><span class="linenos">399</span></a> <span class="n">alias</span><span class="o">=</span><span class="n">name</span><span class="p">,</span> +</span><span id="L-400"><a href="#L-400"><span class="linenos">400</span></a> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> +</span><span id="L-401"><a href="#L-401"><span class="linenos">401</span></a> <span class="p">)</span> +</span><span id="L-402"><a href="#L-402"><span class="linenos">402</span></a> <span class="p">)</span> +</span><span id="L-403"><a href="#L-403"><span class="linenos">403</span></a> <span class="k">elif</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">except_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_id</span><span class="p">,</span> <span class="nb">set</span><span class="p">()):</span> +</span><span id="L-404"><a href="#L-404"><span class="linenos">404</span></a> <span class="n">alias_</span> <span class="o">=</span> <span class="n">replace_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_id</span><span class="p">,</span> <span class="p">{})</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">name</span><span class="p">)</span> +</span><span id="L-405"><a href="#L-405"><span class="linenos">405</span></a> <span class="n">column</span> <span class="o">=</span> <span class="n">exp</span><span class="o">.</span><span class="n">column</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="n">table</span><span class="p">)</span> +</span><span id="L-406"><a href="#L-406"><span class="linenos">406</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span> +</span><span id="L-407"><a href="#L-407"><span class="linenos">407</span></a> <span class="n">alias</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="n">alias_</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> <span class="k">if</span> <span class="n">alias_</span> <span class="o">!=</span> <span class="n">name</span> <span class="k">else</span> <span class="n">column</span> +</span><span id="L-408"><a href="#L-408"><span class="linenos">408</span></a> <span class="p">)</span> +</span><span id="L-409"><a href="#L-409"><span class="linenos">409</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-410"><a href="#L-410"><span class="linenos">410</span></a> <span class="k">return</span> +</span><span id="L-411"><a href="#L-411"><span class="linenos">411</span></a> +</span><span id="L-412"><a href="#L-412"><span class="linenos">412</span></a> <span class="c1"># Ensures we don't overwrite the initial selections with an empty list</span> +</span><span id="L-413"><a href="#L-413"><span class="linenos">413</span></a> <span class="k">if</span> <span class="n">new_selections</span><span class="p">:</span> +</span><span id="L-414"><a href="#L-414"><span class="linenos">414</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="n">new_selections</span><span class="p">)</span> +</span><span id="L-415"><a href="#L-415"><span class="linenos">415</span></a> +</span><span id="L-416"><a href="#L-416"><span class="linenos">416</span></a> +</span><span id="L-417"><a href="#L-417"><span class="linenos">417</span></a><span class="k">def</span> <span class="nf">_add_except_columns</span><span class="p">(</span> +</span><span id="L-418"><a href="#L-418"><span class="linenos">418</span></a> <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">tables</span><span class="p">,</span> <span class="n">except_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">int</span><span class="p">,</span> <span class="n">t</span><span class="o">.</span><span class="n">Set</span><span class="p">[</span><span class="nb">str</span><span class="p">]]</span> +</span><span id="L-419"><a href="#L-419"><span class="linenos">419</span></a><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> +</span><span id="L-420"><a href="#L-420"><span class="linenos">420</span></a> <span class="n">except_</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"except"</span><span class="p">)</span> +</span><span id="L-421"><a href="#L-421"><span class="linenos">421</span></a> +</span><span id="L-422"><a href="#L-422"><span class="linenos">422</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">except_</span><span class="p">:</span> +</span><span id="L-423"><a href="#L-423"><span class="linenos">423</span></a> <span class="k">return</span> +</span><span id="L-424"><a href="#L-424"><span class="linenos">424</span></a> +</span><span id="L-425"><a href="#L-425"><span class="linenos">425</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">e</span><span class="o">.</span><span class="n">name</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">except_</span><span class="p">}</span> </span><span id="L-426"><a href="#L-426"><span class="linenos">426</span></a> -</span><span id="L-427"><a href="#L-427"><span class="linenos">427</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">e</span><span class="o">.</span><span class="n">name</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">except_</span><span class="p">}</span> -</span><span id="L-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="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> -</span><span id="L-430"><a href="#L-430"><span class="linenos">430</span></a> <span class="n">except_columns</span><span class="p">[</span><span class="nb">id</span><span class="p">(</span><span class="n">table</span><span class="p">)]</span> <span class="o">=</span> <span class="n">columns</span> -</span><span id="L-431"><a href="#L-431"><span class="linenos">431</span></a> -</span><span id="L-432"><a href="#L-432"><span class="linenos">432</span></a> -</span><span id="L-433"><a href="#L-433"><span class="linenos">433</span></a><span class="k">def</span> <span class="nf">_add_replace_columns</span><span class="p">(</span> -</span><span id="L-434"><a href="#L-434"><span class="linenos">434</span></a> <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">tables</span><span class="p">,</span> <span class="n">replace_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">int</span><span class="p">,</span> <span class="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="nb">str</span><span class="p">]]</span> -</span><span id="L-435"><a href="#L-435"><span class="linenos">435</span></a><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> -</span><span id="L-436"><a href="#L-436"><span class="linenos">436</span></a> <span class="n">replace</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"replace"</span><span class="p">)</span> -</span><span id="L-437"><a href="#L-437"><span class="linenos">437</span></a> -</span><span id="L-438"><a href="#L-438"><span class="linenos">438</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">replace</span><span class="p">:</span> -</span><span id="L-439"><a href="#L-439"><span class="linenos">439</span></a> <span class="k">return</span> +</span><span id="L-427"><a href="#L-427"><span class="linenos">427</span></a> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> +</span><span id="L-428"><a href="#L-428"><span class="linenos">428</span></a> <span class="n">except_columns</span><span class="p">[</span><span class="nb">id</span><span class="p">(</span><span class="n">table</span><span class="p">)]</span> <span class="o">=</span> <span class="n">columns</span> +</span><span id="L-429"><a href="#L-429"><span class="linenos">429</span></a> +</span><span id="L-430"><a href="#L-430"><span class="linenos">430</span></a> +</span><span id="L-431"><a href="#L-431"><span class="linenos">431</span></a><span class="k">def</span> <span class="nf">_add_replace_columns</span><span class="p">(</span> +</span><span id="L-432"><a href="#L-432"><span class="linenos">432</span></a> <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">tables</span><span class="p">,</span> <span class="n">replace_columns</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Dict</span><span class="p">[</span><span class="nb">int</span><span class="p">,</span> <span class="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="nb">str</span><span class="p">]]</span> +</span><span id="L-433"><a href="#L-433"><span class="linenos">433</span></a><span class="p">)</span> <span class="o">-></span> <span class="kc">None</span><span class="p">:</span> +</span><span id="L-434"><a href="#L-434"><span class="linenos">434</span></a> <span class="n">replace</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"replace"</span><span class="p">)</span> +</span><span id="L-435"><a href="#L-435"><span class="linenos">435</span></a> +</span><span id="L-436"><a href="#L-436"><span class="linenos">436</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">replace</span><span class="p">:</span> +</span><span id="L-437"><a href="#L-437"><span class="linenos">437</span></a> <span class="k">return</span> +</span><span id="L-438"><a href="#L-438"><span class="linenos">438</span></a> +</span><span id="L-439"><a href="#L-439"><span class="linenos">439</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">e</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">name</span><span class="p">:</span> <span class="n">e</span><span class="o">.</span><span class="n">alias</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">replace</span><span class="p">}</span> </span><span id="L-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">columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">e</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">name</span><span class="p">:</span> <span class="n">e</span><span class="o">.</span><span class="n">alias</span> <span class="k">for</span> <span class="n">e</span> <span class="ow">in</span> <span class="n">replace</span><span class="p">}</span> -</span><span id="L-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="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> -</span><span id="L-444"><a href="#L-444"><span class="linenos">444</span></a> <span class="n">replace_columns</span><span class="p">[</span><span class="nb">id</span><span class="p">(</span><span class="n">table</span><span class="p">)]</span> <span class="o">=</span> <span class="n">columns</span> -</span><span id="L-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><span id="L-447"><a href="#L-447"><span class="linenos">447</span></a><span class="k">def</span> <span class="nf">_qualify_outputs</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">):</span> -</span><span id="L-448"><a href="#L-448"><span class="linenos">448</span></a><span class="w"> </span><span class="sd">"""Ensure all output columns are aliased"""</span> -</span><span id="L-449"><a href="#L-449"><span class="linenos">449</span></a> <span class="n">new_selections</span> <span class="o">=</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">for</span> <span class="n">i</span><span class="p">,</span> <span class="p">(</span><span class="n">selection</span><span class="p">,</span> <span class="n">aliased_column</span><span class="p">)</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span> -</span><span id="L-452"><a href="#L-452"><span class="linenos">452</span></a> <span class="n">itertools</span><span class="o">.</span><span class="n">zip_longest</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span><span class="p">,</span> <span class="n">scope</span><span class="o">.</span><span class="n">outer_column_list</span><span class="p">)</span> -</span><span id="L-453"><a href="#L-453"><span class="linenos">453</span></a> <span class="p">):</span> -</span><span id="L-454"><a href="#L-454"><span class="linenos">454</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">selection</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">):</span> -</span><span id="L-455"><a href="#L-455"><span class="linenos">455</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">selection</span><span class="o">.</span><span class="n">output_name</span><span class="p">:</span> -</span><span id="L-456"><a href="#L-456"><span class="linenos">456</span></a> <span class="n">selection</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="sa">f</span><span class="s2">"_col_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">"</span><span class="p">)))</span> -</span><span id="L-457"><a href="#L-457"><span class="linenos">457</span></a> <span class="k">elif</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">selection</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Alias</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">selection</span><span class="o">.</span><span class="n">is_star</span><span class="p">:</span> -</span><span id="L-458"><a href="#L-458"><span class="linenos">458</span></a> <span class="n">selection</span> <span class="o">=</span> <span class="n">alias</span><span class="p">(</span> -</span><span id="L-459"><a href="#L-459"><span class="linenos">459</span></a> <span class="n">selection</span><span class="p">,</span> -</span><span id="L-460"><a href="#L-460"><span class="linenos">460</span></a> <span class="n">alias</span><span class="o">=</span><span class="n">selection</span><span class="o">.</span><span class="n">output_name</span> <span class="ow">or</span> <span class="sa">f</span><span class="s2">"_col_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">"</span><span class="p">,</span> -</span><span id="L-461"><a href="#L-461"><span class="linenos">461</span></a> <span class="p">)</span> -</span><span id="L-462"><a href="#L-462"><span class="linenos">462</span></a> <span class="k">if</span> <span class="n">aliased_column</span><span class="p">:</span> -</span><span id="L-463"><a href="#L-463"><span class="linenos">463</span></a> <span class="n">selection</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">aliased_column</span><span class="p">))</span> +</span><span id="L-441"><a href="#L-441"><span class="linenos">441</span></a> <span class="k">for</span> <span class="n">table</span> <span class="ow">in</span> <span class="n">tables</span><span class="p">:</span> +</span><span id="L-442"><a href="#L-442"><span class="linenos">442</span></a> <span class="n">replace_columns</span><span class="p">[</span><span class="nb">id</span><span class="p">(</span><span class="n">table</span><span class="p">)]</span> <span class="o">=</span> <span class="n">columns</span> +</span><span id="L-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><span id="L-445"><a href="#L-445"><span class="linenos">445</span></a><span class="k">def</span> <span class="nf">_qualify_outputs</span><span class="p">(</span><span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">):</span> +</span><span id="L-446"><a href="#L-446"><span class="linenos">446</span></a><span class="w"> </span><span class="sd">"""Ensure all output columns are aliased"""</span> +</span><span id="L-447"><a href="#L-447"><span class="linenos">447</span></a> <span class="n">new_selections</span> <span class="o">=</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">for</span> <span class="n">i</span><span class="p">,</span> <span class="p">(</span><span class="n">selection</span><span class="p">,</span> <span class="n">aliased_column</span><span class="p">)</span> <span class="ow">in</span> <span class="nb">enumerate</span><span class="p">(</span> +</span><span id="L-450"><a href="#L-450"><span class="linenos">450</span></a> <span class="n">itertools</span><span class="o">.</span><span class="n">zip_longest</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">selects</span><span class="p">,</span> <span class="n">scope</span><span class="o">.</span><span class="n">outer_column_list</span><span class="p">)</span> +</span><span id="L-451"><a href="#L-451"><span class="linenos">451</span></a> <span class="p">):</span> +</span><span id="L-452"><a href="#L-452"><span class="linenos">452</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">selection</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">):</span> +</span><span id="L-453"><a href="#L-453"><span class="linenos">453</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">selection</span><span class="o">.</span><span class="n">output_name</span><span class="p">:</span> +</span><span id="L-454"><a href="#L-454"><span class="linenos">454</span></a> <span class="n">selection</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="sa">f</span><span class="s2">"_col_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">"</span><span class="p">)))</span> +</span><span id="L-455"><a href="#L-455"><span class="linenos">455</span></a> <span class="k">elif</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">selection</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Alias</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">selection</span><span class="o">.</span><span class="n">is_star</span><span class="p">:</span> +</span><span id="L-456"><a href="#L-456"><span class="linenos">456</span></a> <span class="n">selection</span> <span class="o">=</span> <span class="n">alias</span><span class="p">(</span> +</span><span id="L-457"><a href="#L-457"><span class="linenos">457</span></a> <span class="n">selection</span><span class="p">,</span> +</span><span id="L-458"><a href="#L-458"><span class="linenos">458</span></a> <span class="n">alias</span><span class="o">=</span><span class="n">selection</span><span class="o">.</span><span class="n">output_name</span> <span class="ow">or</span> <span class="sa">f</span><span class="s2">"_col_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">"</span><span class="p">,</span> +</span><span id="L-459"><a href="#L-459"><span class="linenos">459</span></a> <span class="p">)</span> +</span><span id="L-460"><a href="#L-460"><span class="linenos">460</span></a> <span class="k">if</span> <span class="n">aliased_column</span><span class="p">:</span> +</span><span id="L-461"><a href="#L-461"><span class="linenos">461</span></a> <span class="n">selection</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">aliased_column</span><span class="p">))</span> +</span><span id="L-462"><a href="#L-462"><span class="linenos">462</span></a> +</span><span id="L-463"><a href="#L-463"><span class="linenos">463</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">selection</span><span class="p">)</span> </span><span id="L-464"><a href="#L-464"><span class="linenos">464</span></a> -</span><span id="L-465"><a href="#L-465"><span class="linenos">465</span></a> <span class="n">new_selections</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">selection</span><span class="p">)</span> +</span><span id="L-465"><a href="#L-465"><span class="linenos">465</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="n">new_selections</span><span class="p">)</span> </span><span id="L-466"><a href="#L-466"><span class="linenos">466</span></a> -</span><span id="L-467"><a href="#L-467"><span class="linenos">467</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"expressions"</span><span class="p">,</span> <span class="n">new_selections</span><span class="p">)</span> -</span><span id="L-468"><a href="#L-468"><span class="linenos">468</span></a> -</span><span id="L-469"><a href="#L-469"><span class="linenos">469</span></a> -</span><span id="L-470"><a href="#L-470"><span class="linenos">470</span></a><span class="k">def</span> <span class="nf">quote_identifiers</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">E</span><span class="p">,</span> <span class="n">dialect</span><span class="p">:</span> <span class="n">DialectType</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> <span class="n">identify</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span><span class="p">)</span> <span class="o">-></span> <span class="n">E</span><span class="p">:</span> -</span><span id="L-471"><a href="#L-471"><span class="linenos">471</span></a><span class="w"> </span><span class="sd">"""Makes sure all identifiers that need to be quoted are quoted."""</span> -</span><span id="L-472"><a href="#L-472"><span class="linenos">472</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">transform</span><span class="p">(</span> -</span><span id="L-473"><a href="#L-473"><span class="linenos">473</span></a> <span class="n">Dialect</span><span class="o">.</span><span class="n">get_or_raise</span><span class="p">(</span><span class="n">dialect</span><span class="p">)</span><span class="o">.</span><span class="n">quote_identifier</span><span class="p">,</span> <span class="n">identify</span><span class="o">=</span><span class="n">identify</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span> -</span><span id="L-474"><a href="#L-474"><span class="linenos">474</span></a> <span class="p">)</span> -</span><span id="L-475"><a href="#L-475"><span class="linenos">475</span></a> -</span><span id="L-476"><a href="#L-476"><span class="linenos">476</span></a> -</span><span id="L-477"><a href="#L-477"><span class="linenos">477</span></a><span class="k">class</span> <span class="nc">Resolver</span><span class="p">:</span> -</span><span id="L-478"><a href="#L-478"><span class="linenos">478</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-479"><a href="#L-479"><span class="linenos">479</span></a><span class="sd"> Helper for resolving columns.</span> -</span><span id="L-480"><a href="#L-480"><span class="linenos">480</span></a> -</span><span id="L-481"><a href="#L-481"><span class="linenos">481</span></a><span class="sd"> This is a class so we can lazily load some things and easily share them across functions.</span> -</span><span id="L-482"><a href="#L-482"><span class="linenos">482</span></a><span class="sd"> """</span> -</span><span id="L-483"><a href="#L-483"><span class="linenos">483</span></a> -</span><span id="L-484"><a href="#L-484"><span class="linenos">484</span></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">:</span> <span class="n">Schema</span><span class="p">,</span> <span class="n">infer_schema</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span><span class="p">):</span> -</span><span id="L-485"><a href="#L-485"><span class="linenos">485</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span> <span class="o">=</span> <span class="n">scope</span> -</span><span id="L-486"><a href="#L-486"><span class="linenos">486</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span> -</span><span id="L-487"><a href="#L-487"><span class="linenos">487</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-488"><a href="#L-488"><span class="linenos">488</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</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="nb">str</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-489"><a href="#L-489"><span class="linenos">489</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-490"><a href="#L-490"><span class="linenos">490</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_infer_schema</span> <span class="o">=</span> <span class="n">infer_schema</span> -</span><span id="L-491"><a href="#L-491"><span class="linenos">491</span></a> -</span><span id="L-492"><a href="#L-492"><span class="linenos">492</span></a> <span class="k">def</span> <span class="nf">get_table</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">column_name</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">]:</span> -</span><span id="L-493"><a href="#L-493"><span class="linenos">493</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-494"><a href="#L-494"><span class="linenos">494</span></a><span class="sd"> Get the table for a column name.</span> -</span><span id="L-495"><a href="#L-495"><span class="linenos">495</span></a> -</span><span id="L-496"><a href="#L-496"><span class="linenos">496</span></a><span class="sd"> Args:</span> -</span><span id="L-497"><a href="#L-497"><span class="linenos">497</span></a><span class="sd"> column_name: The column name to find the table for.</span> -</span><span id="L-498"><a href="#L-498"><span class="linenos">498</span></a><span class="sd"> Returns:</span> -</span><span id="L-499"><a href="#L-499"><span class="linenos">499</span></a><span class="sd"> The table name if it can be found/inferred.</span> -</span><span id="L-500"><a href="#L-500"><span class="linenos">500</span></a><span class="sd"> """</span> -</span><span id="L-501"><a href="#L-501"><span class="linenos">501</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> -</span><span id="L-502"><a href="#L-502"><span class="linenos">502</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_unambiguous_columns</span><span class="p">(</span> -</span><span id="L-503"><a href="#L-503"><span class="linenos">503</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span> -</span><span id="L-504"><a href="#L-504"><span class="linenos">504</span></a> <span class="p">)</span> +</span><span id="L-467"><a href="#L-467"><span class="linenos">467</span></a> +</span><span id="L-468"><a href="#L-468"><span class="linenos">468</span></a><span class="k">def</span> <span class="nf">quote_identifiers</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">E</span><span class="p">,</span> <span class="n">dialect</span><span class="p">:</span> <span class="n">DialectType</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> <span class="n">identify</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span><span class="p">)</span> <span class="o">-></span> <span class="n">E</span><span class="p">:</span> +</span><span id="L-469"><a href="#L-469"><span class="linenos">469</span></a><span class="w"> </span><span class="sd">"""Makes sure all identifiers that need to be quoted are quoted."""</span> +</span><span id="L-470"><a href="#L-470"><span class="linenos">470</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">transform</span><span class="p">(</span> +</span><span id="L-471"><a href="#L-471"><span class="linenos">471</span></a> <span class="n">Dialect</span><span class="o">.</span><span class="n">get_or_raise</span><span class="p">(</span><span class="n">dialect</span><span class="p">)</span><span class="o">.</span><span class="n">quote_identifier</span><span class="p">,</span> <span class="n">identify</span><span class="o">=</span><span class="n">identify</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span> +</span><span id="L-472"><a href="#L-472"><span class="linenos">472</span></a> <span class="p">)</span> +</span><span id="L-473"><a href="#L-473"><span class="linenos">473</span></a> +</span><span id="L-474"><a href="#L-474"><span class="linenos">474</span></a> +</span><span id="L-475"><a href="#L-475"><span class="linenos">475</span></a><span class="k">class</span> <span class="nc">Resolver</span><span class="p">:</span> +</span><span id="L-476"><a href="#L-476"><span class="linenos">476</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-477"><a href="#L-477"><span class="linenos">477</span></a><span class="sd"> Helper for resolving columns.</span> +</span><span id="L-478"><a href="#L-478"><span class="linenos">478</span></a> +</span><span id="L-479"><a href="#L-479"><span class="linenos">479</span></a><span class="sd"> This is a class so we can lazily load some things and easily share them across functions.</span> +</span><span id="L-480"><a href="#L-480"><span class="linenos">480</span></a><span class="sd"> """</span> +</span><span id="L-481"><a href="#L-481"><span class="linenos">481</span></a> +</span><span id="L-482"><a href="#L-482"><span class="linenos">482</span></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">:</span> <span class="n">Schema</span><span class="p">,</span> <span class="n">infer_schema</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span><span class="p">):</span> +</span><span id="L-483"><a href="#L-483"><span class="linenos">483</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span> <span class="o">=</span> <span class="n">scope</span> +</span><span id="L-484"><a href="#L-484"><span class="linenos">484</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span> +</span><span id="L-485"><a href="#L-485"><span class="linenos">485</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-486"><a href="#L-486"><span class="linenos">486</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</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="nb">str</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-487"><a href="#L-487"><span class="linenos">487</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-488"><a href="#L-488"><span class="linenos">488</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_infer_schema</span> <span class="o">=</span> <span class="n">infer_schema</span> +</span><span id="L-489"><a href="#L-489"><span class="linenos">489</span></a> +</span><span id="L-490"><a href="#L-490"><span class="linenos">490</span></a> <span class="k">def</span> <span class="nf">get_table</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">column_name</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">]:</span> +</span><span id="L-491"><a href="#L-491"><span class="linenos">491</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-492"><a href="#L-492"><span class="linenos">492</span></a><span class="sd"> Get the table for a column name.</span> +</span><span id="L-493"><a href="#L-493"><span class="linenos">493</span></a> +</span><span id="L-494"><a href="#L-494"><span class="linenos">494</span></a><span class="sd"> Args:</span> +</span><span id="L-495"><a href="#L-495"><span class="linenos">495</span></a><span class="sd"> column_name: The column name to find the table for.</span> +</span><span id="L-496"><a href="#L-496"><span class="linenos">496</span></a><span class="sd"> Returns:</span> +</span><span id="L-497"><a href="#L-497"><span class="linenos">497</span></a><span class="sd"> The table name if it can be found/inferred.</span> +</span><span id="L-498"><a href="#L-498"><span class="linenos">498</span></a><span class="sd"> """</span> +</span><span id="L-499"><a href="#L-499"><span class="linenos">499</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> +</span><span id="L-500"><a href="#L-500"><span class="linenos">500</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_unambiguous_columns</span><span class="p">(</span> +</span><span id="L-501"><a href="#L-501"><span class="linenos">501</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span> +</span><span id="L-502"><a href="#L-502"><span class="linenos">502</span></a> <span class="p">)</span> +</span><span id="L-503"><a href="#L-503"><span class="linenos">503</span></a> +</span><span id="L-504"><a href="#L-504"><span class="linenos">504</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column_name</span><span class="p">)</span> </span><span id="L-505"><a href="#L-505"><span class="linenos">505</span></a> -</span><span id="L-506"><a href="#L-506"><span class="linenos">506</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column_name</span><span class="p">)</span> -</span><span id="L-507"><a href="#L-507"><span class="linenos">507</span></a> -</span><span id="L-508"><a href="#L-508"><span class="linenos">508</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_name</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">_infer_schema</span><span class="p">:</span> -</span><span id="L-509"><a href="#L-509"><span class="linenos">509</span></a> <span class="n">sources_without_schema</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span> -</span><span id="L-510"><a href="#L-510"><span class="linenos">510</span></a> <span class="n">source</span> -</span><span id="L-511"><a href="#L-511"><span class="linenos">511</span></a> <span class="k">for</span> <span class="n">source</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> -</span><span id="L-512"><a href="#L-512"><span class="linenos">512</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">columns</span> <span class="ow">or</span> <span class="s2">"*"</span> <span class="ow">in</span> <span class="n">columns</span> -</span><span id="L-513"><a href="#L-513"><span class="linenos">513</span></a> <span class="p">)</span> -</span><span id="L-514"><a href="#L-514"><span class="linenos">514</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">sources_without_schema</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> -</span><span id="L-515"><a href="#L-515"><span class="linenos">515</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="n">sources_without_schema</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> -</span><span id="L-516"><a href="#L-516"><span class="linenos">516</span></a> -</span><span id="L-517"><a href="#L-517"><span class="linenos">517</span></a> <span class="k">if</span> <span class="n">table_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">:</span> -</span><span id="L-518"><a href="#L-518"><span class="linenos">518</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> +</span><span id="L-506"><a href="#L-506"><span class="linenos">506</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_name</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">_infer_schema</span><span class="p">:</span> +</span><span id="L-507"><a href="#L-507"><span class="linenos">507</span></a> <span class="n">sources_without_schema</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span> +</span><span id="L-508"><a href="#L-508"><span class="linenos">508</span></a> <span class="n">source</span> +</span><span id="L-509"><a href="#L-509"><span class="linenos">509</span></a> <span class="k">for</span> <span class="n">source</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> +</span><span id="L-510"><a href="#L-510"><span class="linenos">510</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">columns</span> <span class="ow">or</span> <span class="s2">"*"</span> <span class="ow">in</span> <span class="n">columns</span> +</span><span id="L-511"><a href="#L-511"><span class="linenos">511</span></a> <span class="p">)</span> +</span><span id="L-512"><a href="#L-512"><span class="linenos">512</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">sources_without_schema</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> +</span><span id="L-513"><a href="#L-513"><span class="linenos">513</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="n">sources_without_schema</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> +</span><span id="L-514"><a href="#L-514"><span class="linenos">514</span></a> +</span><span id="L-515"><a href="#L-515"><span class="linenos">515</span></a> <span class="k">if</span> <span class="n">table_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">:</span> +</span><span id="L-516"><a href="#L-516"><span class="linenos">516</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> +</span><span id="L-517"><a href="#L-517"><span class="linenos">517</span></a> +</span><span id="L-518"><a href="#L-518"><span class="linenos">518</span></a> <span class="n">node</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> </span><span id="L-519"><a href="#L-519"><span class="linenos">519</span></a> -</span><span id="L-520"><a href="#L-520"><span class="linenos">520</span></a> <span class="n">node</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> -</span><span id="L-521"><a href="#L-521"><span class="linenos">521</span></a> -</span><span id="L-522"><a href="#L-522"><span class="linenos">522</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">):</span> -</span><span id="L-523"><a href="#L-523"><span class="linenos">523</span></a> <span class="k">while</span> <span class="n">node</span> <span class="ow">and</span> <span class="n">node</span><span class="o">.</span><span class="n">alias</span> <span class="o">!=</span> <span class="n">table_name</span><span class="p">:</span> -</span><span id="L-524"><a href="#L-524"><span class="linenos">524</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> -</span><span id="L-525"><a href="#L-525"><span class="linenos">525</span></a> -</span><span id="L-526"><a href="#L-526"><span class="linenos">526</span></a> <span class="n">node_alias</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> -</span><span id="L-527"><a href="#L-527"><span class="linenos">527</span></a> <span class="k">if</span> <span class="n">node_alias</span><span class="p">:</span> -</span><span id="L-528"><a href="#L-528"><span class="linenos">528</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">node_alias</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> +</span><span id="L-520"><a href="#L-520"><span class="linenos">520</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">):</span> +</span><span id="L-521"><a href="#L-521"><span class="linenos">521</span></a> <span class="k">while</span> <span class="n">node</span> <span class="ow">and</span> <span class="n">node</span><span class="o">.</span><span class="n">alias</span> <span class="o">!=</span> <span class="n">table_name</span><span class="p">:</span> +</span><span id="L-522"><a href="#L-522"><span class="linenos">522</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> +</span><span id="L-523"><a href="#L-523"><span class="linenos">523</span></a> +</span><span id="L-524"><a href="#L-524"><span class="linenos">524</span></a> <span class="n">node_alias</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> +</span><span id="L-525"><a href="#L-525"><span class="linenos">525</span></a> <span class="k">if</span> <span class="n">node_alias</span><span class="p">:</span> +</span><span id="L-526"><a href="#L-526"><span class="linenos">526</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">node_alias</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> +</span><span id="L-527"><a href="#L-527"><span class="linenos">527</span></a> +</span><span id="L-528"><a href="#L-528"><span class="linenos">528</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> </span><span id="L-529"><a href="#L-529"><span class="linenos">529</span></a> -</span><span id="L-530"><a href="#L-530"><span class="linenos">530</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> -</span><span id="L-531"><a href="#L-531"><span class="linenos">531</span></a> -</span><span id="L-532"><a href="#L-532"><span class="linenos">532</span></a> <span class="nd">@property</span> -</span><span id="L-533"><a href="#L-533"><span class="linenos">533</span></a> <span class="k">def</span> <span class="nf">all_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> -</span><span id="L-534"><a href="#L-534"><span class="linenos">534</span></a><span class="w"> </span><span class="sd">"""All available columns of all sources in this scope"""</span> -</span><span id="L-535"><a href="#L-535"><span class="linenos">535</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> -</span><span id="L-536"><a href="#L-536"><span class="linenos">536</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="p">{</span> -</span><span id="L-537"><a href="#L-537"><span class="linenos">537</span></a> <span class="n">column</span> <span class="k">for</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">values</span><span class="p">()</span> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span> -</span><span id="L-538"><a href="#L-538"><span class="linenos">538</span></a> <span class="p">}</span> -</span><span id="L-539"><a href="#L-539"><span class="linenos">539</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> -</span><span id="L-540"><a href="#L-540"><span class="linenos">540</span></a> -</span><span id="L-541"><a href="#L-541"><span class="linenos">541</span></a> <span class="k">def</span> <span class="nf">get_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">only_visible</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> -</span><span id="L-542"><a href="#L-542"><span class="linenos">542</span></a><span class="w"> </span><span class="sd">"""Resolve the source columns for a given source `name`"""</span> -</span><span id="L-543"><a href="#L-543"><span class="linenos">543</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> -</span><span id="L-544"><a href="#L-544"><span class="linenos">544</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="L-530"><a href="#L-530"><span class="linenos">530</span></a> <span class="nd">@property</span> +</span><span id="L-531"><a href="#L-531"><span class="linenos">531</span></a> <span class="k">def</span> <span class="nf">all_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> +</span><span id="L-532"><a href="#L-532"><span class="linenos">532</span></a><span class="w"> </span><span class="sd">"""All available columns of all sources in this scope"""</span> +</span><span id="L-533"><a href="#L-533"><span class="linenos">533</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> +</span><span id="L-534"><a href="#L-534"><span class="linenos">534</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="p">{</span> +</span><span id="L-535"><a href="#L-535"><span class="linenos">535</span></a> <span class="n">column</span> <span class="k">for</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">values</span><span class="p">()</span> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span> +</span><span id="L-536"><a href="#L-536"><span class="linenos">536</span></a> <span class="p">}</span> +</span><span id="L-537"><a href="#L-537"><span class="linenos">537</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> +</span><span id="L-538"><a href="#L-538"><span class="linenos">538</span></a> +</span><span id="L-539"><a href="#L-539"><span class="linenos">539</span></a> <span class="k">def</span> <span class="nf">get_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">only_visible</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> +</span><span id="L-540"><a href="#L-540"><span class="linenos">540</span></a><span class="w"> </span><span class="sd">"""Resolve the source columns for a given source `name`"""</span> +</span><span id="L-541"><a href="#L-541"><span class="linenos">541</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> +</span><span id="L-542"><a href="#L-542"><span class="linenos">542</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="L-543"><a href="#L-543"><span class="linenos">543</span></a> +</span><span id="L-544"><a href="#L-544"><span class="linenos">544</span></a> <span class="n">source</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> </span><span id="L-545"><a href="#L-545"><span class="linenos">545</span></a> -</span><span id="L-546"><a href="#L-546"><span class="linenos">546</span></a> <span class="n">source</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> -</span><span id="L-547"><a href="#L-547"><span class="linenos">547</span></a> -</span><span id="L-548"><a href="#L-548"><span class="linenos">548</span></a> <span class="c1"># If referencing a table, return the columns from the schema</span> -</span><span id="L-549"><a href="#L-549"><span class="linenos">549</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> -</span><span id="L-550"><a href="#L-550"><span class="linenos">550</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">column_names</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">only_visible</span><span class="p">)</span> -</span><span id="L-551"><a href="#L-551"><span class="linenos">551</span></a> -</span><span id="L-552"><a href="#L-552"><span class="linenos">552</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">):</span> -</span><span id="L-553"><a href="#L-553"><span class="linenos">553</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span> -</span><span id="L-554"><a href="#L-554"><span class="linenos">554</span></a> -</span><span id="L-555"><a href="#L-555"><span class="linenos">555</span></a> <span class="c1"># Otherwise, if referencing another scope, return that scope's named selects</span> -</span><span id="L-556"><a href="#L-556"><span class="linenos">556</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">named_selects</span> -</span><span id="L-557"><a href="#L-557"><span class="linenos">557</span></a> -</span><span id="L-558"><a href="#L-558"><span class="linenos">558</span></a> <span class="k">def</span> <span class="nf">_get_all_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> -</span><span id="L-559"><a href="#L-559"><span class="linenos">559</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> -</span><span id="L-560"><a href="#L-560"><span class="linenos">560</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="p">{</span> -</span><span id="L-561"><a href="#L-561"><span class="linenos">561</span></a> <span class="n">k</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">k</span><span class="p">)</span> -</span><span id="L-562"><a href="#L-562"><span class="linenos">562</span></a> <span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">lateral_sources</span><span class="p">)</span> -</span><span id="L-563"><a href="#L-563"><span class="linenos">563</span></a> <span class="p">}</span> -</span><span id="L-564"><a href="#L-564"><span class="linenos">564</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> -</span><span id="L-565"><a href="#L-565"><span class="linenos">565</span></a> -</span><span id="L-566"><a href="#L-566"><span class="linenos">566</span></a> <span class="k">def</span> <span class="nf">_get_unambiguous_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">source_columns</span><span class="p">):</span> -</span><span id="L-567"><a href="#L-567"><span class="linenos">567</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-568"><a href="#L-568"><span class="linenos">568</span></a><span class="sd"> Find all the unambiguous columns in sources.</span> -</span><span id="L-569"><a href="#L-569"><span class="linenos">569</span></a> -</span><span id="L-570"><a href="#L-570"><span class="linenos">570</span></a><span class="sd"> Args:</span> -</span><span id="L-571"><a href="#L-571"><span class="linenos">571</span></a><span class="sd"> source_columns (dict): Mapping of names to source columns</span> -</span><span id="L-572"><a href="#L-572"><span class="linenos">572</span></a><span class="sd"> Returns:</span> -</span><span id="L-573"><a href="#L-573"><span class="linenos">573</span></a><span class="sd"> dict: Mapping of column name to source name</span> -</span><span id="L-574"><a href="#L-574"><span class="linenos">574</span></a><span class="sd"> """</span> -</span><span id="L-575"><a href="#L-575"><span class="linenos">575</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source_columns</span><span class="p">:</span> -</span><span id="L-576"><a href="#L-576"><span class="linenos">576</span></a> <span class="k">return</span> <span class="p">{}</span> +</span><span id="L-546"><a href="#L-546"><span class="linenos">546</span></a> <span class="c1"># If referencing a table, return the columns from the schema</span> +</span><span id="L-547"><a href="#L-547"><span class="linenos">547</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> +</span><span id="L-548"><a href="#L-548"><span class="linenos">548</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">column_names</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">only_visible</span><span class="p">)</span> +</span><span id="L-549"><a href="#L-549"><span class="linenos">549</span></a> +</span><span id="L-550"><a href="#L-550"><span class="linenos">550</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">):</span> +</span><span id="L-551"><a href="#L-551"><span class="linenos">551</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span> +</span><span id="L-552"><a href="#L-552"><span class="linenos">552</span></a> +</span><span id="L-553"><a href="#L-553"><span class="linenos">553</span></a> <span class="c1"># Otherwise, if referencing another scope, return that scope's named selects</span> +</span><span id="L-554"><a href="#L-554"><span class="linenos">554</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">named_selects</span> +</span><span id="L-555"><a href="#L-555"><span class="linenos">555</span></a> +</span><span id="L-556"><a href="#L-556"><span class="linenos">556</span></a> <span class="k">def</span> <span class="nf">_get_all_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> +</span><span id="L-557"><a href="#L-557"><span class="linenos">557</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> +</span><span id="L-558"><a href="#L-558"><span class="linenos">558</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="p">{</span> +</span><span id="L-559"><a href="#L-559"><span class="linenos">559</span></a> <span class="n">k</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">k</span><span class="p">)</span> +</span><span id="L-560"><a href="#L-560"><span class="linenos">560</span></a> <span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">lateral_sources</span><span class="p">)</span> +</span><span id="L-561"><a href="#L-561"><span class="linenos">561</span></a> <span class="p">}</span> +</span><span id="L-562"><a href="#L-562"><span class="linenos">562</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> +</span><span id="L-563"><a href="#L-563"><span class="linenos">563</span></a> +</span><span id="L-564"><a href="#L-564"><span class="linenos">564</span></a> <span class="k">def</span> <span class="nf">_get_unambiguous_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">source_columns</span><span class="p">):</span> +</span><span id="L-565"><a href="#L-565"><span class="linenos">565</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-566"><a href="#L-566"><span class="linenos">566</span></a><span class="sd"> Find all the unambiguous columns in sources.</span> +</span><span id="L-567"><a href="#L-567"><span class="linenos">567</span></a> +</span><span id="L-568"><a href="#L-568"><span class="linenos">568</span></a><span class="sd"> Args:</span> +</span><span id="L-569"><a href="#L-569"><span class="linenos">569</span></a><span class="sd"> source_columns (dict): Mapping of names to source columns</span> +</span><span id="L-570"><a href="#L-570"><span class="linenos">570</span></a><span class="sd"> Returns:</span> +</span><span id="L-571"><a href="#L-571"><span class="linenos">571</span></a><span class="sd"> dict: Mapping of column name to source name</span> +</span><span id="L-572"><a href="#L-572"><span class="linenos">572</span></a><span class="sd"> """</span> +</span><span id="L-573"><a href="#L-573"><span class="linenos">573</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source_columns</span><span class="p">:</span> +</span><span id="L-574"><a href="#L-574"><span class="linenos">574</span></a> <span class="k">return</span> <span class="p">{}</span> +</span><span id="L-575"><a href="#L-575"><span class="linenos">575</span></a> +</span><span id="L-576"><a href="#L-576"><span class="linenos">576</span></a> <span class="n">source_columns</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">source_columns</span><span class="o">.</span><span class="n">items</span><span class="p">())</span> </span><span id="L-577"><a href="#L-577"><span class="linenos">577</span></a> -</span><span id="L-578"><a href="#L-578"><span class="linenos">578</span></a> <span class="n">source_columns</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">source_columns</span><span class="o">.</span><span class="n">items</span><span class="p">())</span> -</span><span id="L-579"><a href="#L-579"><span class="linenos">579</span></a> -</span><span id="L-580"><a href="#L-580"><span class="linenos">580</span></a> <span class="n">first_table</span><span class="p">,</span> <span class="n">first_columns</span> <span class="o">=</span> <span class="n">source_columns</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> -</span><span id="L-581"><a href="#L-581"><span class="linenos">581</span></a> <span class="n">unambiguous_columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">col</span><span class="p">:</span> <span class="n">first_table</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">first_columns</span><span class="p">)}</span> -</span><span id="L-582"><a href="#L-582"><span class="linenos">582</span></a> <span class="n">all_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">unambiguous_columns</span><span class="p">)</span> -</span><span id="L-583"><a href="#L-583"><span class="linenos">583</span></a> -</span><span id="L-584"><a href="#L-584"><span class="linenos">584</span></a> <span class="k">for</span> <span class="n">table</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="n">source_columns</span><span class="p">[</span><span class="mi">1</span><span class="p">:]:</span> -</span><span id="L-585"><a href="#L-585"><span class="linenos">585</span></a> <span class="n">unique</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span> -</span><span id="L-586"><a href="#L-586"><span class="linenos">586</span></a> <span class="n">ambiguous</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">all_columns</span><span class="p">)</span><span class="o">.</span><span class="n">intersection</span><span class="p">(</span><span class="n">unique</span><span class="p">)</span> -</span><span id="L-587"><a href="#L-587"><span class="linenos">587</span></a> <span class="n">all_columns</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span> -</span><span id="L-588"><a href="#L-588"><span class="linenos">588</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">ambiguous</span><span class="p">:</span> -</span><span id="L-589"><a href="#L-589"><span class="linenos">589</span></a> <span class="n">unambiguous_columns</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> -</span><span id="L-590"><a href="#L-590"><span class="linenos">590</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">unique</span><span class="o">.</span><span class="n">difference</span><span class="p">(</span><span class="n">ambiguous</span><span class="p">):</span> -</span><span id="L-591"><a href="#L-591"><span class="linenos">591</span></a> <span class="n">unambiguous_columns</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">table</span> +</span><span id="L-578"><a href="#L-578"><span class="linenos">578</span></a> <span class="n">first_table</span><span class="p">,</span> <span class="n">first_columns</span> <span class="o">=</span> <span class="n">source_columns</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> +</span><span id="L-579"><a href="#L-579"><span class="linenos">579</span></a> <span class="n">unambiguous_columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">col</span><span class="p">:</span> <span class="n">first_table</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">first_columns</span><span class="p">)}</span> +</span><span id="L-580"><a href="#L-580"><span class="linenos">580</span></a> <span class="n">all_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">unambiguous_columns</span><span class="p">)</span> +</span><span id="L-581"><a href="#L-581"><span class="linenos">581</span></a> +</span><span id="L-582"><a href="#L-582"><span class="linenos">582</span></a> <span class="k">for</span> <span class="n">table</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="n">source_columns</span><span class="p">[</span><span class="mi">1</span><span class="p">:]:</span> +</span><span id="L-583"><a href="#L-583"><span class="linenos">583</span></a> <span class="n">unique</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span> +</span><span id="L-584"><a href="#L-584"><span class="linenos">584</span></a> <span class="n">ambiguous</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">all_columns</span><span class="p">)</span><span class="o">.</span><span class="n">intersection</span><span class="p">(</span><span class="n">unique</span><span class="p">)</span> +</span><span id="L-585"><a href="#L-585"><span class="linenos">585</span></a> <span class="n">all_columns</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span> +</span><span id="L-586"><a href="#L-586"><span class="linenos">586</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">ambiguous</span><span class="p">:</span> +</span><span id="L-587"><a href="#L-587"><span class="linenos">587</span></a> <span class="n">unambiguous_columns</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> +</span><span id="L-588"><a href="#L-588"><span class="linenos">588</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">unique</span><span class="o">.</span><span class="n">difference</span><span class="p">(</span><span class="n">ambiguous</span><span class="p">):</span> +</span><span id="L-589"><a href="#L-589"><span class="linenos">589</span></a> <span class="n">unambiguous_columns</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">table</span> +</span><span id="L-590"><a href="#L-590"><span class="linenos">590</span></a> +</span><span id="L-591"><a href="#L-591"><span class="linenos">591</span></a> <span class="k">return</span> <span class="n">unambiguous_columns</span> </span><span id="L-592"><a href="#L-592"><span class="linenos">592</span></a> -</span><span id="L-593"><a href="#L-593"><span class="linenos">593</span></a> <span class="k">return</span> <span class="n">unambiguous_columns</span> -</span><span id="L-594"><a href="#L-594"><span class="linenos">594</span></a> -</span><span id="L-595"><a href="#L-595"><span class="linenos">595</span></a> <span class="nd">@staticmethod</span> -</span><span id="L-596"><a href="#L-596"><span class="linenos">596</span></a> <span class="k">def</span> <span class="nf">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">):</span> -</span><span id="L-597"><a href="#L-597"><span class="linenos">597</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-598"><a href="#L-598"><span class="linenos">598</span></a><span class="sd"> Find the unique columns in a list of columns.</span> -</span><span id="L-599"><a href="#L-599"><span class="linenos">599</span></a> -</span><span id="L-600"><a href="#L-600"><span class="linenos">600</span></a><span class="sd"> Example:</span> -</span><span id="L-601"><a href="#L-601"><span class="linenos">601</span></a><span class="sd"> >>> sorted(Resolver._find_unique_columns(["a", "b", "b", "c"]))</span> -</span><span id="L-602"><a href="#L-602"><span class="linenos">602</span></a><span class="sd"> ['a', 'c']</span> -</span><span id="L-603"><a href="#L-603"><span class="linenos">603</span></a> -</span><span id="L-604"><a href="#L-604"><span class="linenos">604</span></a><span class="sd"> This is necessary because duplicate column names are ambiguous.</span> -</span><span id="L-605"><a href="#L-605"><span class="linenos">605</span></a><span class="sd"> """</span> -</span><span id="L-606"><a href="#L-606"><span class="linenos">606</span></a> <span class="n">counts</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="L-607"><a href="#L-607"><span class="linenos">607</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> -</span><span id="L-608"><a href="#L-608"><span class="linenos">608</span></a> <span class="n">counts</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">counts</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span> -</span><span id="L-609"><a href="#L-609"><span class="linenos">609</span></a> <span class="k">return</span> <span class="p">{</span><span class="n">column</span> <span class="k">for</span> <span class="n">column</span><span class="p">,</span> <span class="n">count</span> <span class="ow">in</span> <span class="n">counts</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> <span class="k">if</span> <span class="n">count</span> <span class="o">==</span> <span class="mi">1</span><span class="p">}</span> +</span><span id="L-593"><a href="#L-593"><span class="linenos">593</span></a> <span class="nd">@staticmethod</span> +</span><span id="L-594"><a href="#L-594"><span class="linenos">594</span></a> <span class="k">def</span> <span class="nf">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">):</span> +</span><span id="L-595"><a href="#L-595"><span class="linenos">595</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-596"><a href="#L-596"><span class="linenos">596</span></a><span class="sd"> Find the unique columns in a list of columns.</span> +</span><span id="L-597"><a href="#L-597"><span class="linenos">597</span></a> +</span><span id="L-598"><a href="#L-598"><span class="linenos">598</span></a><span class="sd"> Example:</span> +</span><span id="L-599"><a href="#L-599"><span class="linenos">599</span></a><span class="sd"> >>> sorted(Resolver._find_unique_columns(["a", "b", "b", "c"]))</span> +</span><span id="L-600"><a href="#L-600"><span class="linenos">600</span></a><span class="sd"> ['a', 'c']</span> +</span><span id="L-601"><a href="#L-601"><span class="linenos">601</span></a> +</span><span id="L-602"><a href="#L-602"><span class="linenos">602</span></a><span class="sd"> This is necessary because duplicate column names are ambiguous.</span> +</span><span id="L-603"><a href="#L-603"><span class="linenos">603</span></a><span class="sd"> """</span> +</span><span id="L-604"><a href="#L-604"><span class="linenos">604</span></a> <span class="n">counts</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="L-605"><a href="#L-605"><span class="linenos">605</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> +</span><span id="L-606"><a href="#L-606"><span class="linenos">606</span></a> <span class="n">counts</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">counts</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span> +</span><span id="L-607"><a href="#L-607"><span class="linenos">607</span></a> <span class="k">return</span> <span class="p">{</span><span class="n">column</span> <span class="k">for</span> <span class="n">column</span><span class="p">,</span> <span class="n">count</span> <span class="ow">in</span> <span class="n">counts</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> <span class="k">if</span> <span class="n">count</span> <span class="o">==</span> <span class="mi">1</span><span class="p">}</span> </span></pre></div> @@ -737,28 +735,29 @@ </span><span id="qualify_columns-40"><a href="#qualify_columns-40"><span class="linenos">40</span></a><span class="sd"> """</span> </span><span id="qualify_columns-41"><a href="#qualify_columns-41"><span class="linenos">41</span></a> <span class="n">schema</span> <span class="o">=</span> <span class="n">ensure_schema</span><span class="p">(</span><span class="n">schema</span><span class="p">)</span> </span><span id="qualify_columns-42"><a href="#qualify_columns-42"><span class="linenos">42</span></a> <span class="n">infer_schema</span> <span class="o">=</span> <span class="n">schema</span><span class="o">.</span><span class="n">empty</span> <span class="k">if</span> <span class="n">infer_schema</span> <span class="ow">is</span> <span class="kc">None</span> <span class="k">else</span> <span class="n">infer_schema</span> -</span><span id="qualify_columns-43"><a href="#qualify_columns-43"><span class="linenos">43</span></a> -</span><span id="qualify_columns-44"><a href="#qualify_columns-44"><span class="linenos">44</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="qualify_columns-45"><a href="#qualify_columns-45"><span class="linenos">45</span></a> <span class="n">resolver</span> <span class="o">=</span> <span class="n">Resolver</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">,</span> <span class="n">infer_schema</span><span class="o">=</span><span class="n">infer_schema</span><span class="p">)</span> -</span><span id="qualify_columns-46"><a href="#qualify_columns-46"><span class="linenos">46</span></a> <span class="n">_pop_table_column_aliases</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">ctes</span><span class="p">)</span> -</span><span id="qualify_columns-47"><a href="#qualify_columns-47"><span class="linenos">47</span></a> <span class="n">_pop_table_column_aliases</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">derived_tables</span><span class="p">)</span> -</span><span id="qualify_columns-48"><a href="#qualify_columns-48"><span class="linenos">48</span></a> <span class="n">using_column_tables</span> <span class="o">=</span> <span class="n">_expand_using</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> -</span><span id="qualify_columns-49"><a href="#qualify_columns-49"><span class="linenos">49</span></a> -</span><span id="qualify_columns-50"><a href="#qualify_columns-50"><span class="linenos">50</span></a> <span class="k">if</span> <span class="n">schema</span><span class="o">.</span><span class="n">empty</span> <span class="ow">and</span> <span class="n">expand_alias_refs</span><span class="p">:</span> -</span><span id="qualify_columns-51"><a href="#qualify_columns-51"><span class="linenos">51</span></a> <span class="n">_expand_alias_refs</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> -</span><span id="qualify_columns-52"><a href="#qualify_columns-52"><span class="linenos">52</span></a> -</span><span id="qualify_columns-53"><a href="#qualify_columns-53"><span class="linenos">53</span></a> <span class="n">_qualify_columns</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> -</span><span id="qualify_columns-54"><a href="#qualify_columns-54"><span class="linenos">54</span></a> -</span><span id="qualify_columns-55"><a href="#qualify_columns-55"><span class="linenos">55</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">schema</span><span class="o">.</span><span class="n">empty</span> <span class="ow">and</span> <span class="n">expand_alias_refs</span><span class="p">:</span> -</span><span id="qualify_columns-56"><a href="#qualify_columns-56"><span class="linenos">56</span></a> <span class="n">_expand_alias_refs</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> -</span><span id="qualify_columns-57"><a href="#qualify_columns-57"><span class="linenos">57</span></a> -</span><span id="qualify_columns-58"><a href="#qualify_columns-58"><span class="linenos">58</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">):</span> -</span><span id="qualify_columns-59"><a href="#qualify_columns-59"><span class="linenos">59</span></a> <span class="n">_expand_stars</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">,</span> <span class="n">using_column_tables</span><span class="p">)</span> -</span><span id="qualify_columns-60"><a href="#qualify_columns-60"><span class="linenos">60</span></a> <span class="n">_qualify_outputs</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> -</span><span id="qualify_columns-61"><a href="#qualify_columns-61"><span class="linenos">61</span></a> <span class="n">_expand_group_by</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> -</span><span id="qualify_columns-62"><a href="#qualify_columns-62"><span class="linenos">62</span></a> <span class="n">_expand_order_by</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> -</span><span id="qualify_columns-63"><a href="#qualify_columns-63"><span class="linenos">63</span></a> -</span><span id="qualify_columns-64"><a href="#qualify_columns-64"><span class="linenos">64</span></a> <span class="k">return</span> <span class="n">expression</span> +</span><span id="qualify_columns-43"><a href="#qualify_columns-43"><span class="linenos">43</span></a> <span class="n">pseudocolumns</span> <span class="o">=</span> <span class="n">Dialect</span><span class="o">.</span><span class="n">get_or_raise</span><span class="p">(</span><span class="n">schema</span><span class="o">.</span><span class="n">dialect</span><span class="p">)</span><span class="o">.</span><span class="n">PSEUDOCOLUMNS</span> +</span><span id="qualify_columns-44"><a href="#qualify_columns-44"><span class="linenos">44</span></a> +</span><span id="qualify_columns-45"><a href="#qualify_columns-45"><span class="linenos">45</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="qualify_columns-46"><a href="#qualify_columns-46"><span class="linenos">46</span></a> <span class="n">resolver</span> <span class="o">=</span> <span class="n">Resolver</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">,</span> <span class="n">infer_schema</span><span class="o">=</span><span class="n">infer_schema</span><span class="p">)</span> +</span><span id="qualify_columns-47"><a href="#qualify_columns-47"><span class="linenos">47</span></a> <span class="n">_pop_table_column_aliases</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">ctes</span><span class="p">)</span> +</span><span id="qualify_columns-48"><a href="#qualify_columns-48"><span class="linenos">48</span></a> <span class="n">_pop_table_column_aliases</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">derived_tables</span><span class="p">)</span> +</span><span id="qualify_columns-49"><a href="#qualify_columns-49"><span class="linenos">49</span></a> <span class="n">using_column_tables</span> <span class="o">=</span> <span class="n">_expand_using</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="qualify_columns-50"><a href="#qualify_columns-50"><span class="linenos">50</span></a> +</span><span id="qualify_columns-51"><a href="#qualify_columns-51"><span class="linenos">51</span></a> <span class="k">if</span> <span class="n">schema</span><span class="o">.</span><span class="n">empty</span> <span class="ow">and</span> <span class="n">expand_alias_refs</span><span class="p">:</span> +</span><span id="qualify_columns-52"><a href="#qualify_columns-52"><span class="linenos">52</span></a> <span class="n">_expand_alias_refs</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="qualify_columns-53"><a href="#qualify_columns-53"><span class="linenos">53</span></a> +</span><span id="qualify_columns-54"><a href="#qualify_columns-54"><span class="linenos">54</span></a> <span class="n">_qualify_columns</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="qualify_columns-55"><a href="#qualify_columns-55"><span class="linenos">55</span></a> +</span><span id="qualify_columns-56"><a href="#qualify_columns-56"><span class="linenos">56</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">schema</span><span class="o">.</span><span class="n">empty</span> <span class="ow">and</span> <span class="n">expand_alias_refs</span><span class="p">:</span> +</span><span id="qualify_columns-57"><a href="#qualify_columns-57"><span class="linenos">57</span></a> <span class="n">_expand_alias_refs</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="qualify_columns-58"><a href="#qualify_columns-58"><span class="linenos">58</span></a> +</span><span id="qualify_columns-59"><a href="#qualify_columns-59"><span class="linenos">59</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">):</span> +</span><span id="qualify_columns-60"><a href="#qualify_columns-60"><span class="linenos">60</span></a> <span class="n">_expand_stars</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">,</span> <span class="n">using_column_tables</span><span class="p">,</span> <span class="n">pseudocolumns</span><span class="p">)</span> +</span><span id="qualify_columns-61"><a href="#qualify_columns-61"><span class="linenos">61</span></a> <span class="n">_qualify_outputs</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> +</span><span id="qualify_columns-62"><a href="#qualify_columns-62"><span class="linenos">62</span></a> <span class="n">_expand_group_by</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> +</span><span id="qualify_columns-63"><a href="#qualify_columns-63"><span class="linenos">63</span></a> <span class="n">_expand_order_by</span><span class="p">(</span><span class="n">scope</span><span class="p">,</span> <span class="n">resolver</span><span class="p">)</span> +</span><span id="qualify_columns-64"><a href="#qualify_columns-64"><span class="linenos">64</span></a> +</span><span id="qualify_columns-65"><a href="#qualify_columns-65"><span class="linenos">65</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -806,21 +805,21 @@ </div> <a class="headerlink" href="#validate_qualify_columns"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="validate_qualify_columns-67"><a href="#validate_qualify_columns-67"><span class="linenos">67</span></a><span class="k">def</span> <span class="nf">validate_qualify_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">E</span><span class="p">)</span> <span class="o">-></span> <span class="n">E</span><span class="p">:</span> -</span><span id="validate_qualify_columns-68"><a href="#validate_qualify_columns-68"><span class="linenos">68</span></a><span class="w"> </span><span class="sd">"""Raise an `OptimizeError` if any columns aren't qualified"""</span> -</span><span id="validate_qualify_columns-69"><a href="#validate_qualify_columns-69"><span class="linenos">69</span></a> <span class="n">unqualified_columns</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="validate_qualify_columns-70"><a href="#validate_qualify_columns-70"><span class="linenos">70</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="validate_qualify_columns-71"><a href="#validate_qualify_columns-71"><span class="linenos">71</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> -</span><span id="validate_qualify_columns-72"><a href="#validate_qualify_columns-72"><span class="linenos">72</span></a> <span class="n">unqualified_columns</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">unqualified_columns</span><span class="p">)</span> -</span><span id="validate_qualify_columns-73"><a href="#validate_qualify_columns-73"><span class="linenos">73</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">external_columns</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">is_correlated_subquery</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">pivots</span><span class="p">:</span> -</span><span id="validate_qualify_columns-74"><a href="#validate_qualify_columns-74"><span class="linenos">74</span></a> <span class="n">column</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">external_columns</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> -</span><span id="validate_qualify_columns-75"><a href="#validate_qualify_columns-75"><span class="linenos">75</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span> -</span><span id="validate_qualify_columns-76"><a href="#validate_qualify_columns-76"><span class="linenos">76</span></a> <span class="sa">f</span><span class="s2">"""Column '</span><span class="si">{</span><span class="n">column</span><span class="si">}</span><span class="s2">' could not be resolved</span><span class="si">{</span><span class="sa">f</span><span class="s2">" for table: '</span><span class="si">{</span><span class="n">column</span><span class="o">.</span><span class="n">table</span><span class="si">}</span><span class="s2">'"</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="n">column</span><span class="o">.</span><span class="n">table</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="s1">''</span><span class="si">}</span><span class="s2">"""</span> -</span><span id="validate_qualify_columns-77"><a href="#validate_qualify_columns-77"><span class="linenos">77</span></a> <span class="p">)</span> -</span><span id="validate_qualify_columns-78"><a href="#validate_qualify_columns-78"><span class="linenos">78</span></a> -</span><span id="validate_qualify_columns-79"><a href="#validate_qualify_columns-79"><span class="linenos">79</span></a> <span class="k">if</span> <span class="n">unqualified_columns</span><span class="p">:</span> -</span><span id="validate_qualify_columns-80"><a href="#validate_qualify_columns-80"><span class="linenos">80</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Ambiguous columns: </span><span class="si">{</span><span class="n">unqualified_columns</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> -</span><span id="validate_qualify_columns-81"><a href="#validate_qualify_columns-81"><span class="linenos">81</span></a> <span class="k">return</span> <span class="n">expression</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="validate_qualify_columns-68"><a href="#validate_qualify_columns-68"><span class="linenos">68</span></a><span class="k">def</span> <span class="nf">validate_qualify_columns</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">E</span><span class="p">)</span> <span class="o">-></span> <span class="n">E</span><span class="p">:</span> +</span><span id="validate_qualify_columns-69"><a href="#validate_qualify_columns-69"><span class="linenos">69</span></a><span class="w"> </span><span class="sd">"""Raise an `OptimizeError` if any columns aren't qualified"""</span> +</span><span id="validate_qualify_columns-70"><a href="#validate_qualify_columns-70"><span class="linenos">70</span></a> <span class="n">unqualified_columns</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="validate_qualify_columns-71"><a href="#validate_qualify_columns-71"><span class="linenos">71</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="validate_qualify_columns-72"><a href="#validate_qualify_columns-72"><span class="linenos">72</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> +</span><span id="validate_qualify_columns-73"><a href="#validate_qualify_columns-73"><span class="linenos">73</span></a> <span class="n">unqualified_columns</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">unqualified_columns</span><span class="p">)</span> +</span><span id="validate_qualify_columns-74"><a href="#validate_qualify_columns-74"><span class="linenos">74</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">external_columns</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">is_correlated_subquery</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">pivots</span><span class="p">:</span> +</span><span id="validate_qualify_columns-75"><a href="#validate_qualify_columns-75"><span class="linenos">75</span></a> <span class="n">column</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">external_columns</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> +</span><span id="validate_qualify_columns-76"><a href="#validate_qualify_columns-76"><span class="linenos">76</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span> +</span><span id="validate_qualify_columns-77"><a href="#validate_qualify_columns-77"><span class="linenos">77</span></a> <span class="sa">f</span><span class="s2">"""Column '</span><span class="si">{</span><span class="n">column</span><span class="si">}</span><span class="s2">' could not be resolved</span><span class="si">{</span><span class="sa">f</span><span class="s2">" for table: '</span><span class="si">{</span><span class="n">column</span><span class="o">.</span><span class="n">table</span><span class="si">}</span><span class="s2">'"</span><span class="w"> </span><span class="k">if</span><span class="w"> </span><span class="n">column</span><span class="o">.</span><span class="n">table</span><span class="w"> </span><span class="k">else</span><span class="w"> </span><span class="s1">''</span><span class="si">}</span><span class="s2">"""</span> +</span><span id="validate_qualify_columns-78"><a href="#validate_qualify_columns-78"><span class="linenos">78</span></a> <span class="p">)</span> +</span><span id="validate_qualify_columns-79"><a href="#validate_qualify_columns-79"><span class="linenos">79</span></a> +</span><span id="validate_qualify_columns-80"><a href="#validate_qualify_columns-80"><span class="linenos">80</span></a> <span class="k">if</span> <span class="n">unqualified_columns</span><span class="p">:</span> +</span><span id="validate_qualify_columns-81"><a href="#validate_qualify_columns-81"><span class="linenos">81</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Ambiguous columns: </span><span class="si">{</span><span class="n">unqualified_columns</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="validate_qualify_columns-82"><a href="#validate_qualify_columns-82"><span class="linenos">82</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -840,11 +839,11 @@ </div> <a class="headerlink" href="#quote_identifiers"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="quote_identifiers-471"><a href="#quote_identifiers-471"><span class="linenos">471</span></a><span class="k">def</span> <span class="nf">quote_identifiers</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">E</span><span class="p">,</span> <span class="n">dialect</span><span class="p">:</span> <span class="n">DialectType</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> <span class="n">identify</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span><span class="p">)</span> <span class="o">-></span> <span class="n">E</span><span class="p">:</span> -</span><span id="quote_identifiers-472"><a href="#quote_identifiers-472"><span class="linenos">472</span></a><span class="w"> </span><span class="sd">"""Makes sure all identifiers that need to be quoted are quoted."""</span> -</span><span id="quote_identifiers-473"><a href="#quote_identifiers-473"><span class="linenos">473</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">transform</span><span class="p">(</span> -</span><span id="quote_identifiers-474"><a href="#quote_identifiers-474"><span class="linenos">474</span></a> <span class="n">Dialect</span><span class="o">.</span><span class="n">get_or_raise</span><span class="p">(</span><span class="n">dialect</span><span class="p">)</span><span class="o">.</span><span class="n">quote_identifier</span><span class="p">,</span> <span class="n">identify</span><span class="o">=</span><span class="n">identify</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span> -</span><span id="quote_identifiers-475"><a href="#quote_identifiers-475"><span class="linenos">475</span></a> <span class="p">)</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="quote_identifiers-469"><a href="#quote_identifiers-469"><span class="linenos">469</span></a><span class="k">def</span> <span class="nf">quote_identifiers</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">E</span><span class="p">,</span> <span class="n">dialect</span><span class="p">:</span> <span class="n">DialectType</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> <span class="n">identify</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span><span class="p">)</span> <span class="o">-></span> <span class="n">E</span><span class="p">:</span> +</span><span id="quote_identifiers-470"><a href="#quote_identifiers-470"><span class="linenos">470</span></a><span class="w"> </span><span class="sd">"""Makes sure all identifiers that need to be quoted are quoted."""</span> +</span><span id="quote_identifiers-471"><a href="#quote_identifiers-471"><span class="linenos">471</span></a> <span class="k">return</span> <span class="n">expression</span><span class="o">.</span><span class="n">transform</span><span class="p">(</span> +</span><span id="quote_identifiers-472"><a href="#quote_identifiers-472"><span class="linenos">472</span></a> <span class="n">Dialect</span><span class="o">.</span><span class="n">get_or_raise</span><span class="p">(</span><span class="n">dialect</span><span class="p">)</span><span class="o">.</span><span class="n">quote_identifier</span><span class="p">,</span> <span class="n">identify</span><span class="o">=</span><span class="n">identify</span><span class="p">,</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span> +</span><span id="quote_identifiers-473"><a href="#quote_identifiers-473"><span class="linenos">473</span></a> <span class="p">)</span> </span></pre></div> @@ -864,139 +863,139 @@ </div> <a class="headerlink" href="#Resolver"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="Resolver-478"><a href="#Resolver-478"><span class="linenos">478</span></a><span class="k">class</span> <span class="nc">Resolver</span><span class="p">:</span> -</span><span id="Resolver-479"><a href="#Resolver-479"><span class="linenos">479</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="Resolver-480"><a href="#Resolver-480"><span class="linenos">480</span></a><span class="sd"> Helper for resolving columns.</span> -</span><span id="Resolver-481"><a href="#Resolver-481"><span class="linenos">481</span></a> -</span><span id="Resolver-482"><a href="#Resolver-482"><span class="linenos">482</span></a><span class="sd"> This is a class so we can lazily load some things and easily share them across functions.</span> -</span><span id="Resolver-483"><a href="#Resolver-483"><span class="linenos">483</span></a><span class="sd"> """</span> -</span><span id="Resolver-484"><a href="#Resolver-484"><span class="linenos">484</span></a> -</span><span id="Resolver-485"><a href="#Resolver-485"><span class="linenos">485</span></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">:</span> <span class="n">Schema</span><span class="p">,</span> <span class="n">infer_schema</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span><span class="p">):</span> -</span><span id="Resolver-486"><a href="#Resolver-486"><span class="linenos">486</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span> <span class="o">=</span> <span class="n">scope</span> -</span><span id="Resolver-487"><a href="#Resolver-487"><span class="linenos">487</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span> -</span><span id="Resolver-488"><a href="#Resolver-488"><span class="linenos">488</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="Resolver-489"><a href="#Resolver-489"><span class="linenos">489</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</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="nb">str</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="Resolver-490"><a href="#Resolver-490"><span class="linenos">490</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="Resolver-491"><a href="#Resolver-491"><span class="linenos">491</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_infer_schema</span> <span class="o">=</span> <span class="n">infer_schema</span> -</span><span id="Resolver-492"><a href="#Resolver-492"><span class="linenos">492</span></a> -</span><span id="Resolver-493"><a href="#Resolver-493"><span class="linenos">493</span></a> <span class="k">def</span> <span class="nf">get_table</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">column_name</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">]:</span> -</span><span id="Resolver-494"><a href="#Resolver-494"><span class="linenos">494</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="Resolver-495"><a href="#Resolver-495"><span class="linenos">495</span></a><span class="sd"> Get the table for a column name.</span> -</span><span id="Resolver-496"><a href="#Resolver-496"><span class="linenos">496</span></a> -</span><span id="Resolver-497"><a href="#Resolver-497"><span class="linenos">497</span></a><span class="sd"> Args:</span> -</span><span id="Resolver-498"><a href="#Resolver-498"><span class="linenos">498</span></a><span class="sd"> column_name: The column name to find the table for.</span> -</span><span id="Resolver-499"><a href="#Resolver-499"><span class="linenos">499</span></a><span class="sd"> Returns:</span> -</span><span id="Resolver-500"><a href="#Resolver-500"><span class="linenos">500</span></a><span class="sd"> The table name if it can be found/inferred.</span> -</span><span id="Resolver-501"><a href="#Resolver-501"><span class="linenos">501</span></a><span class="sd"> """</span> -</span><span id="Resolver-502"><a href="#Resolver-502"><span class="linenos">502</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> -</span><span id="Resolver-503"><a href="#Resolver-503"><span class="linenos">503</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_unambiguous_columns</span><span class="p">(</span> -</span><span id="Resolver-504"><a href="#Resolver-504"><span class="linenos">504</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span> -</span><span id="Resolver-505"><a href="#Resolver-505"><span class="linenos">505</span></a> <span class="p">)</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="Resolver-476"><a href="#Resolver-476"><span class="linenos">476</span></a><span class="k">class</span> <span class="nc">Resolver</span><span class="p">:</span> +</span><span id="Resolver-477"><a href="#Resolver-477"><span class="linenos">477</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="Resolver-478"><a href="#Resolver-478"><span class="linenos">478</span></a><span class="sd"> Helper for resolving columns.</span> +</span><span id="Resolver-479"><a href="#Resolver-479"><span class="linenos">479</span></a> +</span><span id="Resolver-480"><a href="#Resolver-480"><span class="linenos">480</span></a><span class="sd"> This is a class so we can lazily load some things and easily share them across functions.</span> +</span><span id="Resolver-481"><a href="#Resolver-481"><span class="linenos">481</span></a><span class="sd"> """</span> +</span><span id="Resolver-482"><a href="#Resolver-482"><span class="linenos">482</span></a> +</span><span id="Resolver-483"><a href="#Resolver-483"><span class="linenos">483</span></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">:</span> <span class="n">Schema</span><span class="p">,</span> <span class="n">infer_schema</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span><span class="p">):</span> +</span><span id="Resolver-484"><a href="#Resolver-484"><span class="linenos">484</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span> <span class="o">=</span> <span class="n">scope</span> +</span><span id="Resolver-485"><a href="#Resolver-485"><span class="linenos">485</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span> +</span><span id="Resolver-486"><a href="#Resolver-486"><span class="linenos">486</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="Resolver-487"><a href="#Resolver-487"><span class="linenos">487</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</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="nb">str</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="Resolver-488"><a href="#Resolver-488"><span class="linenos">488</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="Resolver-489"><a href="#Resolver-489"><span class="linenos">489</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_infer_schema</span> <span class="o">=</span> <span class="n">infer_schema</span> +</span><span id="Resolver-490"><a href="#Resolver-490"><span class="linenos">490</span></a> +</span><span id="Resolver-491"><a href="#Resolver-491"><span class="linenos">491</span></a> <span class="k">def</span> <span class="nf">get_table</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">column_name</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">]:</span> +</span><span id="Resolver-492"><a href="#Resolver-492"><span class="linenos">492</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="Resolver-493"><a href="#Resolver-493"><span class="linenos">493</span></a><span class="sd"> Get the table for a column name.</span> +</span><span id="Resolver-494"><a href="#Resolver-494"><span class="linenos">494</span></a> +</span><span id="Resolver-495"><a href="#Resolver-495"><span class="linenos">495</span></a><span class="sd"> Args:</span> +</span><span id="Resolver-496"><a href="#Resolver-496"><span class="linenos">496</span></a><span class="sd"> column_name: The column name to find the table for.</span> +</span><span id="Resolver-497"><a href="#Resolver-497"><span class="linenos">497</span></a><span class="sd"> Returns:</span> +</span><span id="Resolver-498"><a href="#Resolver-498"><span class="linenos">498</span></a><span class="sd"> The table name if it can be found/inferred.</span> +</span><span id="Resolver-499"><a href="#Resolver-499"><span class="linenos">499</span></a><span class="sd"> """</span> +</span><span id="Resolver-500"><a href="#Resolver-500"><span class="linenos">500</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> +</span><span id="Resolver-501"><a href="#Resolver-501"><span class="linenos">501</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_unambiguous_columns</span><span class="p">(</span> +</span><span id="Resolver-502"><a href="#Resolver-502"><span class="linenos">502</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span> +</span><span id="Resolver-503"><a href="#Resolver-503"><span class="linenos">503</span></a> <span class="p">)</span> +</span><span id="Resolver-504"><a href="#Resolver-504"><span class="linenos">504</span></a> +</span><span id="Resolver-505"><a href="#Resolver-505"><span class="linenos">505</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column_name</span><span class="p">)</span> </span><span id="Resolver-506"><a href="#Resolver-506"><span class="linenos">506</span></a> -</span><span id="Resolver-507"><a href="#Resolver-507"><span class="linenos">507</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column_name</span><span class="p">)</span> -</span><span id="Resolver-508"><a href="#Resolver-508"><span class="linenos">508</span></a> -</span><span id="Resolver-509"><a href="#Resolver-509"><span class="linenos">509</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_name</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">_infer_schema</span><span class="p">:</span> -</span><span id="Resolver-510"><a href="#Resolver-510"><span class="linenos">510</span></a> <span class="n">sources_without_schema</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span> -</span><span id="Resolver-511"><a href="#Resolver-511"><span class="linenos">511</span></a> <span class="n">source</span> -</span><span id="Resolver-512"><a href="#Resolver-512"><span class="linenos">512</span></a> <span class="k">for</span> <span class="n">source</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> -</span><span id="Resolver-513"><a href="#Resolver-513"><span class="linenos">513</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">columns</span> <span class="ow">or</span> <span class="s2">"*"</span> <span class="ow">in</span> <span class="n">columns</span> -</span><span id="Resolver-514"><a href="#Resolver-514"><span class="linenos">514</span></a> <span class="p">)</span> -</span><span id="Resolver-515"><a href="#Resolver-515"><span class="linenos">515</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">sources_without_schema</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> -</span><span id="Resolver-516"><a href="#Resolver-516"><span class="linenos">516</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="n">sources_without_schema</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> -</span><span id="Resolver-517"><a href="#Resolver-517"><span class="linenos">517</span></a> -</span><span id="Resolver-518"><a href="#Resolver-518"><span class="linenos">518</span></a> <span class="k">if</span> <span class="n">table_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">:</span> -</span><span id="Resolver-519"><a href="#Resolver-519"><span class="linenos">519</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> +</span><span id="Resolver-507"><a href="#Resolver-507"><span class="linenos">507</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_name</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">_infer_schema</span><span class="p">:</span> +</span><span id="Resolver-508"><a href="#Resolver-508"><span class="linenos">508</span></a> <span class="n">sources_without_schema</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span> +</span><span id="Resolver-509"><a href="#Resolver-509"><span class="linenos">509</span></a> <span class="n">source</span> +</span><span id="Resolver-510"><a href="#Resolver-510"><span class="linenos">510</span></a> <span class="k">for</span> <span class="n">source</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> +</span><span id="Resolver-511"><a href="#Resolver-511"><span class="linenos">511</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">columns</span> <span class="ow">or</span> <span class="s2">"*"</span> <span class="ow">in</span> <span class="n">columns</span> +</span><span id="Resolver-512"><a href="#Resolver-512"><span class="linenos">512</span></a> <span class="p">)</span> +</span><span id="Resolver-513"><a href="#Resolver-513"><span class="linenos">513</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">sources_without_schema</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> +</span><span id="Resolver-514"><a href="#Resolver-514"><span class="linenos">514</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="n">sources_without_schema</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> +</span><span id="Resolver-515"><a href="#Resolver-515"><span class="linenos">515</span></a> +</span><span id="Resolver-516"><a href="#Resolver-516"><span class="linenos">516</span></a> <span class="k">if</span> <span class="n">table_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">:</span> +</span><span id="Resolver-517"><a href="#Resolver-517"><span class="linenos">517</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> +</span><span id="Resolver-518"><a href="#Resolver-518"><span class="linenos">518</span></a> +</span><span id="Resolver-519"><a href="#Resolver-519"><span class="linenos">519</span></a> <span class="n">node</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> </span><span id="Resolver-520"><a href="#Resolver-520"><span class="linenos">520</span></a> -</span><span id="Resolver-521"><a href="#Resolver-521"><span class="linenos">521</span></a> <span class="n">node</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> -</span><span id="Resolver-522"><a href="#Resolver-522"><span class="linenos">522</span></a> -</span><span id="Resolver-523"><a href="#Resolver-523"><span class="linenos">523</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">):</span> -</span><span id="Resolver-524"><a href="#Resolver-524"><span class="linenos">524</span></a> <span class="k">while</span> <span class="n">node</span> <span class="ow">and</span> <span class="n">node</span><span class="o">.</span><span class="n">alias</span> <span class="o">!=</span> <span class="n">table_name</span><span class="p">:</span> -</span><span id="Resolver-525"><a href="#Resolver-525"><span class="linenos">525</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> -</span><span id="Resolver-526"><a href="#Resolver-526"><span class="linenos">526</span></a> -</span><span id="Resolver-527"><a href="#Resolver-527"><span class="linenos">527</span></a> <span class="n">node_alias</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> -</span><span id="Resolver-528"><a href="#Resolver-528"><span class="linenos">528</span></a> <span class="k">if</span> <span class="n">node_alias</span><span class="p">:</span> -</span><span id="Resolver-529"><a href="#Resolver-529"><span class="linenos">529</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">node_alias</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> +</span><span id="Resolver-521"><a href="#Resolver-521"><span class="linenos">521</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">):</span> +</span><span id="Resolver-522"><a href="#Resolver-522"><span class="linenos">522</span></a> <span class="k">while</span> <span class="n">node</span> <span class="ow">and</span> <span class="n">node</span><span class="o">.</span><span class="n">alias</span> <span class="o">!=</span> <span class="n">table_name</span><span class="p">:</span> +</span><span id="Resolver-523"><a href="#Resolver-523"><span class="linenos">523</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> +</span><span id="Resolver-524"><a href="#Resolver-524"><span class="linenos">524</span></a> +</span><span id="Resolver-525"><a href="#Resolver-525"><span class="linenos">525</span></a> <span class="n">node_alias</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> +</span><span id="Resolver-526"><a href="#Resolver-526"><span class="linenos">526</span></a> <span class="k">if</span> <span class="n">node_alias</span><span class="p">:</span> +</span><span id="Resolver-527"><a href="#Resolver-527"><span class="linenos">527</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">node_alias</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> +</span><span id="Resolver-528"><a href="#Resolver-528"><span class="linenos">528</span></a> +</span><span id="Resolver-529"><a href="#Resolver-529"><span class="linenos">529</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> </span><span id="Resolver-530"><a href="#Resolver-530"><span class="linenos">530</span></a> -</span><span id="Resolver-531"><a href="#Resolver-531"><span class="linenos">531</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> -</span><span id="Resolver-532"><a href="#Resolver-532"><span class="linenos">532</span></a> -</span><span id="Resolver-533"><a href="#Resolver-533"><span class="linenos">533</span></a> <span class="nd">@property</span> -</span><span id="Resolver-534"><a href="#Resolver-534"><span class="linenos">534</span></a> <span class="k">def</span> <span class="nf">all_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> -</span><span id="Resolver-535"><a href="#Resolver-535"><span class="linenos">535</span></a><span class="w"> </span><span class="sd">"""All available columns of all sources in this scope"""</span> -</span><span id="Resolver-536"><a href="#Resolver-536"><span class="linenos">536</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> -</span><span id="Resolver-537"><a href="#Resolver-537"><span class="linenos">537</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="p">{</span> -</span><span id="Resolver-538"><a href="#Resolver-538"><span class="linenos">538</span></a> <span class="n">column</span> <span class="k">for</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">values</span><span class="p">()</span> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span> -</span><span id="Resolver-539"><a href="#Resolver-539"><span class="linenos">539</span></a> <span class="p">}</span> -</span><span id="Resolver-540"><a href="#Resolver-540"><span class="linenos">540</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> -</span><span id="Resolver-541"><a href="#Resolver-541"><span class="linenos">541</span></a> -</span><span id="Resolver-542"><a href="#Resolver-542"><span class="linenos">542</span></a> <span class="k">def</span> <span class="nf">get_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">only_visible</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> -</span><span id="Resolver-543"><a href="#Resolver-543"><span class="linenos">543</span></a><span class="w"> </span><span class="sd">"""Resolve the source columns for a given source `name`"""</span> -</span><span id="Resolver-544"><a href="#Resolver-544"><span class="linenos">544</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> -</span><span id="Resolver-545"><a href="#Resolver-545"><span class="linenos">545</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="Resolver-531"><a href="#Resolver-531"><span class="linenos">531</span></a> <span class="nd">@property</span> +</span><span id="Resolver-532"><a href="#Resolver-532"><span class="linenos">532</span></a> <span class="k">def</span> <span class="nf">all_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> +</span><span id="Resolver-533"><a href="#Resolver-533"><span class="linenos">533</span></a><span class="w"> </span><span class="sd">"""All available columns of all sources in this scope"""</span> +</span><span id="Resolver-534"><a href="#Resolver-534"><span class="linenos">534</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> +</span><span id="Resolver-535"><a href="#Resolver-535"><span class="linenos">535</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="p">{</span> +</span><span id="Resolver-536"><a href="#Resolver-536"><span class="linenos">536</span></a> <span class="n">column</span> <span class="k">for</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">values</span><span class="p">()</span> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span> +</span><span id="Resolver-537"><a href="#Resolver-537"><span class="linenos">537</span></a> <span class="p">}</span> +</span><span id="Resolver-538"><a href="#Resolver-538"><span class="linenos">538</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> +</span><span id="Resolver-539"><a href="#Resolver-539"><span class="linenos">539</span></a> +</span><span id="Resolver-540"><a href="#Resolver-540"><span class="linenos">540</span></a> <span class="k">def</span> <span class="nf">get_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">only_visible</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> +</span><span id="Resolver-541"><a href="#Resolver-541"><span class="linenos">541</span></a><span class="w"> </span><span class="sd">"""Resolve the source columns for a given source `name`"""</span> +</span><span id="Resolver-542"><a href="#Resolver-542"><span class="linenos">542</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> +</span><span id="Resolver-543"><a href="#Resolver-543"><span class="linenos">543</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="Resolver-544"><a href="#Resolver-544"><span class="linenos">544</span></a> +</span><span id="Resolver-545"><a href="#Resolver-545"><span class="linenos">545</span></a> <span class="n">source</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> </span><span id="Resolver-546"><a href="#Resolver-546"><span class="linenos">546</span></a> -</span><span id="Resolver-547"><a href="#Resolver-547"><span class="linenos">547</span></a> <span class="n">source</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> -</span><span id="Resolver-548"><a href="#Resolver-548"><span class="linenos">548</span></a> -</span><span id="Resolver-549"><a href="#Resolver-549"><span class="linenos">549</span></a> <span class="c1"># If referencing a table, return the columns from the schema</span> -</span><span id="Resolver-550"><a href="#Resolver-550"><span class="linenos">550</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> -</span><span id="Resolver-551"><a href="#Resolver-551"><span class="linenos">551</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">column_names</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">only_visible</span><span class="p">)</span> -</span><span id="Resolver-552"><a href="#Resolver-552"><span class="linenos">552</span></a> -</span><span id="Resolver-553"><a href="#Resolver-553"><span class="linenos">553</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">):</span> -</span><span id="Resolver-554"><a href="#Resolver-554"><span class="linenos">554</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span> -</span><span id="Resolver-555"><a href="#Resolver-555"><span class="linenos">555</span></a> -</span><span id="Resolver-556"><a href="#Resolver-556"><span class="linenos">556</span></a> <span class="c1"># Otherwise, if referencing another scope, return that scope's named selects</span> -</span><span id="Resolver-557"><a href="#Resolver-557"><span class="linenos">557</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">named_selects</span> -</span><span id="Resolver-558"><a href="#Resolver-558"><span class="linenos">558</span></a> -</span><span id="Resolver-559"><a href="#Resolver-559"><span class="linenos">559</span></a> <span class="k">def</span> <span class="nf">_get_all_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> -</span><span id="Resolver-560"><a href="#Resolver-560"><span class="linenos">560</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> -</span><span id="Resolver-561"><a href="#Resolver-561"><span class="linenos">561</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="p">{</span> -</span><span id="Resolver-562"><a href="#Resolver-562"><span class="linenos">562</span></a> <span class="n">k</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">k</span><span class="p">)</span> -</span><span id="Resolver-563"><a href="#Resolver-563"><span class="linenos">563</span></a> <span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">lateral_sources</span><span class="p">)</span> -</span><span id="Resolver-564"><a href="#Resolver-564"><span class="linenos">564</span></a> <span class="p">}</span> -</span><span id="Resolver-565"><a href="#Resolver-565"><span class="linenos">565</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> -</span><span id="Resolver-566"><a href="#Resolver-566"><span class="linenos">566</span></a> -</span><span id="Resolver-567"><a href="#Resolver-567"><span class="linenos">567</span></a> <span class="k">def</span> <span class="nf">_get_unambiguous_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">source_columns</span><span class="p">):</span> -</span><span id="Resolver-568"><a href="#Resolver-568"><span class="linenos">568</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="Resolver-569"><a href="#Resolver-569"><span class="linenos">569</span></a><span class="sd"> Find all the unambiguous columns in sources.</span> -</span><span id="Resolver-570"><a href="#Resolver-570"><span class="linenos">570</span></a> -</span><span id="Resolver-571"><a href="#Resolver-571"><span class="linenos">571</span></a><span class="sd"> Args:</span> -</span><span id="Resolver-572"><a href="#Resolver-572"><span class="linenos">572</span></a><span class="sd"> source_columns (dict): Mapping of names to source columns</span> -</span><span id="Resolver-573"><a href="#Resolver-573"><span class="linenos">573</span></a><span class="sd"> Returns:</span> -</span><span id="Resolver-574"><a href="#Resolver-574"><span class="linenos">574</span></a><span class="sd"> dict: Mapping of column name to source name</span> -</span><span id="Resolver-575"><a href="#Resolver-575"><span class="linenos">575</span></a><span class="sd"> """</span> -</span><span id="Resolver-576"><a href="#Resolver-576"><span class="linenos">576</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source_columns</span><span class="p">:</span> -</span><span id="Resolver-577"><a href="#Resolver-577"><span class="linenos">577</span></a> <span class="k">return</span> <span class="p">{}</span> +</span><span id="Resolver-547"><a href="#Resolver-547"><span class="linenos">547</span></a> <span class="c1"># If referencing a table, return the columns from the schema</span> +</span><span id="Resolver-548"><a href="#Resolver-548"><span class="linenos">548</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> +</span><span id="Resolver-549"><a href="#Resolver-549"><span class="linenos">549</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">column_names</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">only_visible</span><span class="p">)</span> +</span><span id="Resolver-550"><a href="#Resolver-550"><span class="linenos">550</span></a> +</span><span id="Resolver-551"><a href="#Resolver-551"><span class="linenos">551</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">):</span> +</span><span id="Resolver-552"><a href="#Resolver-552"><span class="linenos">552</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span> +</span><span id="Resolver-553"><a href="#Resolver-553"><span class="linenos">553</span></a> +</span><span id="Resolver-554"><a href="#Resolver-554"><span class="linenos">554</span></a> <span class="c1"># Otherwise, if referencing another scope, return that scope's named selects</span> +</span><span id="Resolver-555"><a href="#Resolver-555"><span class="linenos">555</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">named_selects</span> +</span><span id="Resolver-556"><a href="#Resolver-556"><span class="linenos">556</span></a> +</span><span id="Resolver-557"><a href="#Resolver-557"><span class="linenos">557</span></a> <span class="k">def</span> <span class="nf">_get_all_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> +</span><span id="Resolver-558"><a href="#Resolver-558"><span class="linenos">558</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> +</span><span id="Resolver-559"><a href="#Resolver-559"><span class="linenos">559</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="p">{</span> +</span><span id="Resolver-560"><a href="#Resolver-560"><span class="linenos">560</span></a> <span class="n">k</span><span class="p">:</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_source_columns</span><span class="p">(</span><span class="n">k</span><span class="p">)</span> +</span><span id="Resolver-561"><a href="#Resolver-561"><span class="linenos">561</span></a> <span class="k">for</span> <span class="n">k</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">lateral_sources</span><span class="p">)</span> +</span><span id="Resolver-562"><a href="#Resolver-562"><span class="linenos">562</span></a> <span class="p">}</span> +</span><span id="Resolver-563"><a href="#Resolver-563"><span class="linenos">563</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> +</span><span id="Resolver-564"><a href="#Resolver-564"><span class="linenos">564</span></a> +</span><span id="Resolver-565"><a href="#Resolver-565"><span class="linenos">565</span></a> <span class="k">def</span> <span class="nf">_get_unambiguous_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">source_columns</span><span class="p">):</span> +</span><span id="Resolver-566"><a href="#Resolver-566"><span class="linenos">566</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="Resolver-567"><a href="#Resolver-567"><span class="linenos">567</span></a><span class="sd"> Find all the unambiguous columns in sources.</span> +</span><span id="Resolver-568"><a href="#Resolver-568"><span class="linenos">568</span></a> +</span><span id="Resolver-569"><a href="#Resolver-569"><span class="linenos">569</span></a><span class="sd"> Args:</span> +</span><span id="Resolver-570"><a href="#Resolver-570"><span class="linenos">570</span></a><span class="sd"> source_columns (dict): Mapping of names to source columns</span> +</span><span id="Resolver-571"><a href="#Resolver-571"><span class="linenos">571</span></a><span class="sd"> Returns:</span> +</span><span id="Resolver-572"><a href="#Resolver-572"><span class="linenos">572</span></a><span class="sd"> dict: Mapping of column name to source name</span> +</span><span id="Resolver-573"><a href="#Resolver-573"><span class="linenos">573</span></a><span class="sd"> """</span> +</span><span id="Resolver-574"><a href="#Resolver-574"><span class="linenos">574</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source_columns</span><span class="p">:</span> +</span><span id="Resolver-575"><a href="#Resolver-575"><span class="linenos">575</span></a> <span class="k">return</span> <span class="p">{}</span> +</span><span id="Resolver-576"><a href="#Resolver-576"><span class="linenos">576</span></a> +</span><span id="Resolver-577"><a href="#Resolver-577"><span class="linenos">577</span></a> <span class="n">source_columns</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">source_columns</span><span class="o">.</span><span class="n">items</span><span class="p">())</span> </span><span id="Resolver-578"><a href="#Resolver-578"><span class="linenos">578</span></a> -</span><span id="Resolver-579"><a href="#Resolver-579"><span class="linenos">579</span></a> <span class="n">source_columns</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">source_columns</span><span class="o">.</span><span class="n">items</span><span class="p">())</span> -</span><span id="Resolver-580"><a href="#Resolver-580"><span class="linenos">580</span></a> -</span><span id="Resolver-581"><a href="#Resolver-581"><span class="linenos">581</span></a> <span class="n">first_table</span><span class="p">,</span> <span class="n">first_columns</span> <span class="o">=</span> <span class="n">source_columns</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> -</span><span id="Resolver-582"><a href="#Resolver-582"><span class="linenos">582</span></a> <span class="n">unambiguous_columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">col</span><span class="p">:</span> <span class="n">first_table</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">first_columns</span><span class="p">)}</span> -</span><span id="Resolver-583"><a href="#Resolver-583"><span class="linenos">583</span></a> <span class="n">all_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">unambiguous_columns</span><span class="p">)</span> -</span><span id="Resolver-584"><a href="#Resolver-584"><span class="linenos">584</span></a> -</span><span id="Resolver-585"><a href="#Resolver-585"><span class="linenos">585</span></a> <span class="k">for</span> <span class="n">table</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="n">source_columns</span><span class="p">[</span><span class="mi">1</span><span class="p">:]:</span> -</span><span id="Resolver-586"><a href="#Resolver-586"><span class="linenos">586</span></a> <span class="n">unique</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span> -</span><span id="Resolver-587"><a href="#Resolver-587"><span class="linenos">587</span></a> <span class="n">ambiguous</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">all_columns</span><span class="p">)</span><span class="o">.</span><span class="n">intersection</span><span class="p">(</span><span class="n">unique</span><span class="p">)</span> -</span><span id="Resolver-588"><a href="#Resolver-588"><span class="linenos">588</span></a> <span class="n">all_columns</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span> -</span><span id="Resolver-589"><a href="#Resolver-589"><span class="linenos">589</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">ambiguous</span><span class="p">:</span> -</span><span id="Resolver-590"><a href="#Resolver-590"><span class="linenos">590</span></a> <span class="n">unambiguous_columns</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> -</span><span id="Resolver-591"><a href="#Resolver-591"><span class="linenos">591</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">unique</span><span class="o">.</span><span class="n">difference</span><span class="p">(</span><span class="n">ambiguous</span><span class="p">):</span> -</span><span id="Resolver-592"><a href="#Resolver-592"><span class="linenos">592</span></a> <span class="n">unambiguous_columns</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">table</span> +</span><span id="Resolver-579"><a href="#Resolver-579"><span class="linenos">579</span></a> <span class="n">first_table</span><span class="p">,</span> <span class="n">first_columns</span> <span class="o">=</span> <span class="n">source_columns</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> +</span><span id="Resolver-580"><a href="#Resolver-580"><span class="linenos">580</span></a> <span class="n">unambiguous_columns</span> <span class="o">=</span> <span class="p">{</span><span class="n">col</span><span class="p">:</span> <span class="n">first_table</span> <span class="k">for</span> <span class="n">col</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">first_columns</span><span class="p">)}</span> +</span><span id="Resolver-581"><a href="#Resolver-581"><span class="linenos">581</span></a> <span class="n">all_columns</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">unambiguous_columns</span><span class="p">)</span> +</span><span id="Resolver-582"><a href="#Resolver-582"><span class="linenos">582</span></a> +</span><span id="Resolver-583"><a href="#Resolver-583"><span class="linenos">583</span></a> <span class="k">for</span> <span class="n">table</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="n">source_columns</span><span class="p">[</span><span class="mi">1</span><span class="p">:]:</span> +</span><span id="Resolver-584"><a href="#Resolver-584"><span class="linenos">584</span></a> <span class="n">unique</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span> +</span><span id="Resolver-585"><a href="#Resolver-585"><span class="linenos">585</span></a> <span class="n">ambiguous</span> <span class="o">=</span> <span class="nb">set</span><span class="p">(</span><span class="n">all_columns</span><span class="p">)</span><span class="o">.</span><span class="n">intersection</span><span class="p">(</span><span class="n">unique</span><span class="p">)</span> +</span><span id="Resolver-586"><a href="#Resolver-586"><span class="linenos">586</span></a> <span class="n">all_columns</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">columns</span><span class="p">)</span> +</span><span id="Resolver-587"><a href="#Resolver-587"><span class="linenos">587</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">ambiguous</span><span class="p">:</span> +</span><span id="Resolver-588"><a href="#Resolver-588"><span class="linenos">588</span></a> <span class="n">unambiguous_columns</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> +</span><span id="Resolver-589"><a href="#Resolver-589"><span class="linenos">589</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">unique</span><span class="o">.</span><span class="n">difference</span><span class="p">(</span><span class="n">ambiguous</span><span class="p">):</span> +</span><span id="Resolver-590"><a href="#Resolver-590"><span class="linenos">590</span></a> <span class="n">unambiguous_columns</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">table</span> +</span><span id="Resolver-591"><a href="#Resolver-591"><span class="linenos">591</span></a> +</span><span id="Resolver-592"><a href="#Resolver-592"><span class="linenos">592</span></a> <span class="k">return</span> <span class="n">unambiguous_columns</span> </span><span id="Resolver-593"><a href="#Resolver-593"><span class="linenos">593</span></a> -</span><span id="Resolver-594"><a href="#Resolver-594"><span class="linenos">594</span></a> <span class="k">return</span> <span class="n">unambiguous_columns</span> -</span><span id="Resolver-595"><a href="#Resolver-595"><span class="linenos">595</span></a> -</span><span id="Resolver-596"><a href="#Resolver-596"><span class="linenos">596</span></a> <span class="nd">@staticmethod</span> -</span><span id="Resolver-597"><a href="#Resolver-597"><span class="linenos">597</span></a> <span class="k">def</span> <span class="nf">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">):</span> -</span><span id="Resolver-598"><a href="#Resolver-598"><span class="linenos">598</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="Resolver-599"><a href="#Resolver-599"><span class="linenos">599</span></a><span class="sd"> Find the unique columns in a list of columns.</span> -</span><span id="Resolver-600"><a href="#Resolver-600"><span class="linenos">600</span></a> -</span><span id="Resolver-601"><a href="#Resolver-601"><span class="linenos">601</span></a><span class="sd"> Example:</span> -</span><span id="Resolver-602"><a href="#Resolver-602"><span class="linenos">602</span></a><span class="sd"> >>> sorted(Resolver._find_unique_columns(["a", "b", "b", "c"]))</span> -</span><span id="Resolver-603"><a href="#Resolver-603"><span class="linenos">603</span></a><span class="sd"> ['a', 'c']</span> -</span><span id="Resolver-604"><a href="#Resolver-604"><span class="linenos">604</span></a> -</span><span id="Resolver-605"><a href="#Resolver-605"><span class="linenos">605</span></a><span class="sd"> This is necessary because duplicate column names are ambiguous.</span> -</span><span id="Resolver-606"><a href="#Resolver-606"><span class="linenos">606</span></a><span class="sd"> """</span> -</span><span id="Resolver-607"><a href="#Resolver-607"><span class="linenos">607</span></a> <span class="n">counts</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="Resolver-608"><a href="#Resolver-608"><span class="linenos">608</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> -</span><span id="Resolver-609"><a href="#Resolver-609"><span class="linenos">609</span></a> <span class="n">counts</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">counts</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span> -</span><span id="Resolver-610"><a href="#Resolver-610"><span class="linenos">610</span></a> <span class="k">return</span> <span class="p">{</span><span class="n">column</span> <span class="k">for</span> <span class="n">column</span><span class="p">,</span> <span class="n">count</span> <span class="ow">in</span> <span class="n">counts</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> <span class="k">if</span> <span class="n">count</span> <span class="o">==</span> <span class="mi">1</span><span class="p">}</span> +</span><span id="Resolver-594"><a href="#Resolver-594"><span class="linenos">594</span></a> <span class="nd">@staticmethod</span> +</span><span id="Resolver-595"><a href="#Resolver-595"><span class="linenos">595</span></a> <span class="k">def</span> <span class="nf">_find_unique_columns</span><span class="p">(</span><span class="n">columns</span><span class="p">):</span> +</span><span id="Resolver-596"><a href="#Resolver-596"><span class="linenos">596</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="Resolver-597"><a href="#Resolver-597"><span class="linenos">597</span></a><span class="sd"> Find the unique columns in a list of columns.</span> +</span><span id="Resolver-598"><a href="#Resolver-598"><span class="linenos">598</span></a> +</span><span id="Resolver-599"><a href="#Resolver-599"><span class="linenos">599</span></a><span class="sd"> Example:</span> +</span><span id="Resolver-600"><a href="#Resolver-600"><span class="linenos">600</span></a><span class="sd"> >>> sorted(Resolver._find_unique_columns(["a", "b", "b", "c"]))</span> +</span><span id="Resolver-601"><a href="#Resolver-601"><span class="linenos">601</span></a><span class="sd"> ['a', 'c']</span> +</span><span id="Resolver-602"><a href="#Resolver-602"><span class="linenos">602</span></a> +</span><span id="Resolver-603"><a href="#Resolver-603"><span class="linenos">603</span></a><span class="sd"> This is necessary because duplicate column names are ambiguous.</span> +</span><span id="Resolver-604"><a href="#Resolver-604"><span class="linenos">604</span></a><span class="sd"> """</span> +</span><span id="Resolver-605"><a href="#Resolver-605"><span class="linenos">605</span></a> <span class="n">counts</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="Resolver-606"><a href="#Resolver-606"><span class="linenos">606</span></a> <span class="k">for</span> <span class="n">column</span> <span class="ow">in</span> <span class="n">columns</span><span class="p">:</span> +</span><span id="Resolver-607"><a href="#Resolver-607"><span class="linenos">607</span></a> <span class="n">counts</span><span class="p">[</span><span class="n">column</span><span class="p">]</span> <span class="o">=</span> <span class="n">counts</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span> <span class="o">+</span> <span class="mi">1</span> +</span><span id="Resolver-608"><a href="#Resolver-608"><span class="linenos">608</span></a> <span class="k">return</span> <span class="p">{</span><span class="n">column</span> <span class="k">for</span> <span class="n">column</span><span class="p">,</span> <span class="n">count</span> <span class="ow">in</span> <span class="n">counts</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> <span class="k">if</span> <span class="n">count</span> <span class="o">==</span> <span class="mi">1</span><span class="p">}</span> </span></pre></div> @@ -1016,13 +1015,13 @@ </div> <a class="headerlink" href="#Resolver.__init__"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="Resolver.__init__-485"><a href="#Resolver.__init__-485"><span class="linenos">485</span></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">:</span> <span class="n">Schema</span><span class="p">,</span> <span class="n">infer_schema</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span><span class="p">):</span> -</span><span id="Resolver.__init__-486"><a href="#Resolver.__init__-486"><span class="linenos">486</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span> <span class="o">=</span> <span class="n">scope</span> -</span><span id="Resolver.__init__-487"><a href="#Resolver.__init__-487"><span class="linenos">487</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span> -</span><span id="Resolver.__init__-488"><a href="#Resolver.__init__-488"><span class="linenos">488</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="Resolver.__init__-489"><a href="#Resolver.__init__-489"><span class="linenos">489</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</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="nb">str</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="Resolver.__init__-490"><a href="#Resolver.__init__-490"><span class="linenos">490</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="Resolver.__init__-491"><a href="#Resolver.__init__-491"><span class="linenos">491</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_infer_schema</span> <span class="o">=</span> <span class="n">infer_schema</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="Resolver.__init__-483"><a href="#Resolver.__init__-483"><span class="linenos">483</span></a> <span class="k">def</span> <span class="fm">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">scope</span><span class="p">:</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">schema</span><span class="p">:</span> <span class="n">Schema</span><span class="p">,</span> <span class="n">infer_schema</span><span class="p">:</span> <span class="nb">bool</span> <span class="o">=</span> <span class="kc">True</span><span class="p">):</span> +</span><span id="Resolver.__init__-484"><a href="#Resolver.__init__-484"><span class="linenos">484</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span> <span class="o">=</span> <span class="n">scope</span> +</span><span id="Resolver.__init__-485"><a href="#Resolver.__init__-485"><span class="linenos">485</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span> <span class="o">=</span> <span class="n">schema</span> +</span><span id="Resolver.__init__-486"><a href="#Resolver.__init__-486"><span class="linenos">486</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_source_columns</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="Resolver.__init__-487"><a href="#Resolver.__init__-487"><span class="linenos">487</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</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="nb">str</span><span class="p">]]</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="Resolver.__init__-488"><a href="#Resolver.__init__-488"><span class="linenos">488</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_all_columns</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="Resolver.__init__-489"><a href="#Resolver.__init__-489"><span class="linenos">489</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_infer_schema</span> <span class="o">=</span> <span class="n">infer_schema</span> </span></pre></div> @@ -1062,45 +1061,45 @@ </div> <a class="headerlink" href="#Resolver.get_table"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="Resolver.get_table-493"><a href="#Resolver.get_table-493"><span class="linenos">493</span></a> <span class="k">def</span> <span class="nf">get_table</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">column_name</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">]:</span> -</span><span id="Resolver.get_table-494"><a href="#Resolver.get_table-494"><span class="linenos">494</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="Resolver.get_table-495"><a href="#Resolver.get_table-495"><span class="linenos">495</span></a><span class="sd"> Get the table for a column name.</span> -</span><span id="Resolver.get_table-496"><a href="#Resolver.get_table-496"><span class="linenos">496</span></a> -</span><span id="Resolver.get_table-497"><a href="#Resolver.get_table-497"><span class="linenos">497</span></a><span class="sd"> Args:</span> -</span><span id="Resolver.get_table-498"><a href="#Resolver.get_table-498"><span class="linenos">498</span></a><span class="sd"> column_name: The column name to find the table for.</span> -</span><span id="Resolver.get_table-499"><a href="#Resolver.get_table-499"><span class="linenos">499</span></a><span class="sd"> Returns:</span> -</span><span id="Resolver.get_table-500"><a href="#Resolver.get_table-500"><span class="linenos">500</span></a><span class="sd"> The table name if it can be found/inferred.</span> -</span><span id="Resolver.get_table-501"><a href="#Resolver.get_table-501"><span class="linenos">501</span></a><span class="sd"> """</span> -</span><span id="Resolver.get_table-502"><a href="#Resolver.get_table-502"><span class="linenos">502</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> -</span><span id="Resolver.get_table-503"><a href="#Resolver.get_table-503"><span class="linenos">503</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_unambiguous_columns</span><span class="p">(</span> -</span><span id="Resolver.get_table-504"><a href="#Resolver.get_table-504"><span class="linenos">504</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span> -</span><span id="Resolver.get_table-505"><a href="#Resolver.get_table-505"><span class="linenos">505</span></a> <span class="p">)</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="Resolver.get_table-491"><a href="#Resolver.get_table-491"><span class="linenos">491</span></a> <span class="k">def</span> <span class="nf">get_table</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">column_name</span><span class="p">:</span> <span class="nb">str</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">]:</span> +</span><span id="Resolver.get_table-492"><a href="#Resolver.get_table-492"><span class="linenos">492</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="Resolver.get_table-493"><a href="#Resolver.get_table-493"><span class="linenos">493</span></a><span class="sd"> Get the table for a column name.</span> +</span><span id="Resolver.get_table-494"><a href="#Resolver.get_table-494"><span class="linenos">494</span></a> +</span><span id="Resolver.get_table-495"><a href="#Resolver.get_table-495"><span class="linenos">495</span></a><span class="sd"> Args:</span> +</span><span id="Resolver.get_table-496"><a href="#Resolver.get_table-496"><span class="linenos">496</span></a><span class="sd"> column_name: The column name to find the table for.</span> +</span><span id="Resolver.get_table-497"><a href="#Resolver.get_table-497"><span class="linenos">497</span></a><span class="sd"> Returns:</span> +</span><span id="Resolver.get_table-498"><a href="#Resolver.get_table-498"><span class="linenos">498</span></a><span class="sd"> The table name if it can be found/inferred.</span> +</span><span id="Resolver.get_table-499"><a href="#Resolver.get_table-499"><span class="linenos">499</span></a><span class="sd"> """</span> +</span><span id="Resolver.get_table-500"><a href="#Resolver.get_table-500"><span class="linenos">500</span></a> <span class="k">if</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> +</span><span id="Resolver.get_table-501"><a href="#Resolver.get_table-501"><span class="linenos">501</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_unambiguous_columns</span><span class="p">(</span> +</span><span id="Resolver.get_table-502"><a href="#Resolver.get_table-502"><span class="linenos">502</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span> +</span><span id="Resolver.get_table-503"><a href="#Resolver.get_table-503"><span class="linenos">503</span></a> <span class="p">)</span> +</span><span id="Resolver.get_table-504"><a href="#Resolver.get_table-504"><span class="linenos">504</span></a> +</span><span id="Resolver.get_table-505"><a href="#Resolver.get_table-505"><span class="linenos">505</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column_name</span><span class="p">)</span> </span><span id="Resolver.get_table-506"><a href="#Resolver.get_table-506"><span class="linenos">506</span></a> -</span><span id="Resolver.get_table-507"><a href="#Resolver.get_table-507"><span class="linenos">507</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">_unambiguous_columns</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">column_name</span><span class="p">)</span> -</span><span id="Resolver.get_table-508"><a href="#Resolver.get_table-508"><span class="linenos">508</span></a> -</span><span id="Resolver.get_table-509"><a href="#Resolver.get_table-509"><span class="linenos">509</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_name</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">_infer_schema</span><span class="p">:</span> -</span><span id="Resolver.get_table-510"><a href="#Resolver.get_table-510"><span class="linenos">510</span></a> <span class="n">sources_without_schema</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span> -</span><span id="Resolver.get_table-511"><a href="#Resolver.get_table-511"><span class="linenos">511</span></a> <span class="n">source</span> -</span><span id="Resolver.get_table-512"><a href="#Resolver.get_table-512"><span class="linenos">512</span></a> <span class="k">for</span> <span class="n">source</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> -</span><span id="Resolver.get_table-513"><a href="#Resolver.get_table-513"><span class="linenos">513</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">columns</span> <span class="ow">or</span> <span class="s2">"*"</span> <span class="ow">in</span> <span class="n">columns</span> -</span><span id="Resolver.get_table-514"><a href="#Resolver.get_table-514"><span class="linenos">514</span></a> <span class="p">)</span> -</span><span id="Resolver.get_table-515"><a href="#Resolver.get_table-515"><span class="linenos">515</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">sources_without_schema</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> -</span><span id="Resolver.get_table-516"><a href="#Resolver.get_table-516"><span class="linenos">516</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="n">sources_without_schema</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> -</span><span id="Resolver.get_table-517"><a href="#Resolver.get_table-517"><span class="linenos">517</span></a> -</span><span id="Resolver.get_table-518"><a href="#Resolver.get_table-518"><span class="linenos">518</span></a> <span class="k">if</span> <span class="n">table_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">:</span> -</span><span id="Resolver.get_table-519"><a href="#Resolver.get_table-519"><span class="linenos">519</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> +</span><span id="Resolver.get_table-507"><a href="#Resolver.get_table-507"><span class="linenos">507</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_name</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">_infer_schema</span><span class="p">:</span> +</span><span id="Resolver.get_table-508"><a href="#Resolver.get_table-508"><span class="linenos">508</span></a> <span class="n">sources_without_schema</span> <span class="o">=</span> <span class="nb">tuple</span><span class="p">(</span> +</span><span id="Resolver.get_table-509"><a href="#Resolver.get_table-509"><span class="linenos">509</span></a> <span class="n">source</span> +</span><span id="Resolver.get_table-510"><a href="#Resolver.get_table-510"><span class="linenos">510</span></a> <span class="k">for</span> <span class="n">source</span><span class="p">,</span> <span class="n">columns</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">_get_all_source_columns</span><span class="p">()</span><span class="o">.</span><span class="n">items</span><span class="p">()</span> +</span><span id="Resolver.get_table-511"><a href="#Resolver.get_table-511"><span class="linenos">511</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">columns</span> <span class="ow">or</span> <span class="s2">"*"</span> <span class="ow">in</span> <span class="n">columns</span> +</span><span id="Resolver.get_table-512"><a href="#Resolver.get_table-512"><span class="linenos">512</span></a> <span class="p">)</span> +</span><span id="Resolver.get_table-513"><a href="#Resolver.get_table-513"><span class="linenos">513</span></a> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">sources_without_schema</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> +</span><span id="Resolver.get_table-514"><a href="#Resolver.get_table-514"><span class="linenos">514</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="n">sources_without_schema</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> +</span><span id="Resolver.get_table-515"><a href="#Resolver.get_table-515"><span class="linenos">515</span></a> +</span><span id="Resolver.get_table-516"><a href="#Resolver.get_table-516"><span class="linenos">516</span></a> <span class="k">if</span> <span class="n">table_name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="p">:</span> +</span><span id="Resolver.get_table-517"><a href="#Resolver.get_table-517"><span class="linenos">517</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> +</span><span id="Resolver.get_table-518"><a href="#Resolver.get_table-518"><span class="linenos">518</span></a> +</span><span id="Resolver.get_table-519"><a href="#Resolver.get_table-519"><span class="linenos">519</span></a> <span class="n">node</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> </span><span id="Resolver.get_table-520"><a href="#Resolver.get_table-520"><span class="linenos">520</span></a> -</span><span id="Resolver.get_table-521"><a href="#Resolver.get_table-521"><span class="linenos">521</span></a> <span class="n">node</span><span class="p">,</span> <span class="n">_</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> -</span><span id="Resolver.get_table-522"><a href="#Resolver.get_table-522"><span class="linenos">522</span></a> -</span><span id="Resolver.get_table-523"><a href="#Resolver.get_table-523"><span class="linenos">523</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">):</span> -</span><span id="Resolver.get_table-524"><a href="#Resolver.get_table-524"><span class="linenos">524</span></a> <span class="k">while</span> <span class="n">node</span> <span class="ow">and</span> <span class="n">node</span><span class="o">.</span><span class="n">alias</span> <span class="o">!=</span> <span class="n">table_name</span><span class="p">:</span> -</span><span id="Resolver.get_table-525"><a href="#Resolver.get_table-525"><span class="linenos">525</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> -</span><span id="Resolver.get_table-526"><a href="#Resolver.get_table-526"><span class="linenos">526</span></a> -</span><span id="Resolver.get_table-527"><a href="#Resolver.get_table-527"><span class="linenos">527</span></a> <span class="n">node_alias</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> -</span><span id="Resolver.get_table-528"><a href="#Resolver.get_table-528"><span class="linenos">528</span></a> <span class="k">if</span> <span class="n">node_alias</span><span class="p">:</span> -</span><span id="Resolver.get_table-529"><a href="#Resolver.get_table-529"><span class="linenos">529</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">node_alias</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> -</span><span id="Resolver.get_table-530"><a href="#Resolver.get_table-530"><span class="linenos">530</span></a> -</span><span id="Resolver.get_table-531"><a href="#Resolver.get_table-531"><span class="linenos">531</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> +</span><span id="Resolver.get_table-521"><a href="#Resolver.get_table-521"><span class="linenos">521</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">):</span> +</span><span id="Resolver.get_table-522"><a href="#Resolver.get_table-522"><span class="linenos">522</span></a> <span class="k">while</span> <span class="n">node</span> <span class="ow">and</span> <span class="n">node</span><span class="o">.</span><span class="n">alias</span> <span class="o">!=</span> <span class="n">table_name</span><span class="p">:</span> +</span><span id="Resolver.get_table-523"><a href="#Resolver.get_table-523"><span class="linenos">523</span></a> <span class="n">node</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">parent</span> +</span><span id="Resolver.get_table-524"><a href="#Resolver.get_table-524"><span class="linenos">524</span></a> +</span><span id="Resolver.get_table-525"><a href="#Resolver.get_table-525"><span class="linenos">525</span></a> <span class="n">node_alias</span> <span class="o">=</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> +</span><span id="Resolver.get_table-526"><a href="#Resolver.get_table-526"><span class="linenos">526</span></a> <span class="k">if</span> <span class="n">node_alias</span><span class="p">:</span> +</span><span id="Resolver.get_table-527"><a href="#Resolver.get_table-527"><span class="linenos">527</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">node_alias</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> +</span><span id="Resolver.get_table-528"><a href="#Resolver.get_table-528"><span class="linenos">528</span></a> +</span><span id="Resolver.get_table-529"><a href="#Resolver.get_table-529"><span class="linenos">529</span></a> <span class="k">return</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">table_name</span><span class="p">)</span> </span></pre></div> @@ -1145,22 +1144,22 @@ </div> <a class="headerlink" href="#Resolver.get_source_columns"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="Resolver.get_source_columns-542"><a href="#Resolver.get_source_columns-542"><span class="linenos">542</span></a> <span class="k">def</span> <span class="nf">get_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">only_visible</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> -</span><span id="Resolver.get_source_columns-543"><a href="#Resolver.get_source_columns-543"><span class="linenos">543</span></a><span class="w"> </span><span class="sd">"""Resolve the source columns for a given source `name`"""</span> -</span><span id="Resolver.get_source_columns-544"><a href="#Resolver.get_source_columns-544"><span class="linenos">544</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> -</span><span id="Resolver.get_source_columns-545"><a href="#Resolver.get_source_columns-545"><span class="linenos">545</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="Resolver.get_source_columns-540"><a href="#Resolver.get_source_columns-540"><span class="linenos">540</span></a> <span class="k">def</span> <span class="nf">get_source_columns</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">only_visible</span><span class="o">=</span><span class="kc">False</span><span class="p">):</span> +</span><span id="Resolver.get_source_columns-541"><a href="#Resolver.get_source_columns-541"><span class="linenos">541</span></a><span class="w"> </span><span class="sd">"""Resolve the source columns for a given source `name`"""</span> +</span><span id="Resolver.get_source_columns-542"><a href="#Resolver.get_source_columns-542"><span class="linenos">542</span></a> <span class="k">if</span> <span class="n">name</span> <span class="ow">not</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">:</span> +</span><span id="Resolver.get_source_columns-543"><a href="#Resolver.get_source_columns-543"><span class="linenos">543</span></a> <span class="k">raise</span> <span class="n">OptimizeError</span><span class="p">(</span><span class="sa">f</span><span class="s2">"Unknown table: </span><span class="si">{</span><span class="n">name</span><span class="si">}</span><span class="s2">"</span><span class="p">)</span> +</span><span id="Resolver.get_source_columns-544"><a href="#Resolver.get_source_columns-544"><span class="linenos">544</span></a> +</span><span id="Resolver.get_source_columns-545"><a href="#Resolver.get_source_columns-545"><span class="linenos">545</span></a> <span class="n">source</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> </span><span id="Resolver.get_source_columns-546"><a href="#Resolver.get_source_columns-546"><span class="linenos">546</span></a> -</span><span id="Resolver.get_source_columns-547"><a href="#Resolver.get_source_columns-547"><span class="linenos">547</span></a> <span class="n">source</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> -</span><span id="Resolver.get_source_columns-548"><a href="#Resolver.get_source_columns-548"><span class="linenos">548</span></a> -</span><span id="Resolver.get_source_columns-549"><a href="#Resolver.get_source_columns-549"><span class="linenos">549</span></a> <span class="c1"># If referencing a table, return the columns from the schema</span> -</span><span id="Resolver.get_source_columns-550"><a href="#Resolver.get_source_columns-550"><span class="linenos">550</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> -</span><span id="Resolver.get_source_columns-551"><a href="#Resolver.get_source_columns-551"><span class="linenos">551</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">column_names</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">only_visible</span><span class="p">)</span> -</span><span id="Resolver.get_source_columns-552"><a href="#Resolver.get_source_columns-552"><span class="linenos">552</span></a> -</span><span id="Resolver.get_source_columns-553"><a href="#Resolver.get_source_columns-553"><span class="linenos">553</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">):</span> -</span><span id="Resolver.get_source_columns-554"><a href="#Resolver.get_source_columns-554"><span class="linenos">554</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span> -</span><span id="Resolver.get_source_columns-555"><a href="#Resolver.get_source_columns-555"><span class="linenos">555</span></a> -</span><span id="Resolver.get_source_columns-556"><a href="#Resolver.get_source_columns-556"><span class="linenos">556</span></a> <span class="c1"># Otherwise, if referencing another scope, return that scope's named selects</span> -</span><span id="Resolver.get_source_columns-557"><a href="#Resolver.get_source_columns-557"><span class="linenos">557</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">named_selects</span> +</span><span id="Resolver.get_source_columns-547"><a href="#Resolver.get_source_columns-547"><span class="linenos">547</span></a> <span class="c1"># If referencing a table, return the columns from the schema</span> +</span><span id="Resolver.get_source_columns-548"><a href="#Resolver.get_source_columns-548"><span class="linenos">548</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> +</span><span id="Resolver.get_source_columns-549"><a href="#Resolver.get_source_columns-549"><span class="linenos">549</span></a> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">schema</span><span class="o">.</span><span class="n">column_names</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">only_visible</span><span class="p">)</span> +</span><span id="Resolver.get_source_columns-550"><a href="#Resolver.get_source_columns-550"><span class="linenos">550</span></a> +</span><span id="Resolver.get_source_columns-551"><a href="#Resolver.get_source_columns-551"><span class="linenos">551</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">):</span> +</span><span id="Resolver.get_source_columns-552"><a href="#Resolver.get_source_columns-552"><span class="linenos">552</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span> +</span><span id="Resolver.get_source_columns-553"><a href="#Resolver.get_source_columns-553"><span class="linenos">553</span></a> +</span><span id="Resolver.get_source_columns-554"><a href="#Resolver.get_source_columns-554"><span class="linenos">554</span></a> <span class="c1"># Otherwise, if referencing another scope, return that scope's named selects</span> +</span><span id="Resolver.get_source_columns-555"><a href="#Resolver.get_source_columns-555"><span class="linenos">555</span></a> <span class="k">return</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">named_selects</span> </span></pre></div> diff --git a/docs/sqlglot/optimizer/qualify_tables.html b/docs/sqlglot/optimizer/qualify_tables.html index 6180c92..f04ce59 100644 --- a/docs/sqlglot/optimizer/qualify_tables.html +++ b/docs/sqlglot/optimizer/qualify_tables.html @@ -56,104 +56,106 @@ <label class="view-source-button" for="mod-qualify_tables-view-source"><span>View Source</span></label> - <div class="pdoc-code codehilite"><pre><span></span><span id="L-1"><a href="#L-1"><span class="linenos"> 1</span></a><span class="kn">import</span> <span class="nn">itertools</span> -</span><span id="L-2"><a href="#L-2"><span class="linenos"> 2</span></a><span class="kn">import</span> <span class="nn">typing</span> <span class="k">as</span> <span class="nn">t</span> -</span><span id="L-3"><a href="#L-3"><span class="linenos"> 3</span></a> -</span><span id="L-4"><a href="#L-4"><span class="linenos"> 4</span></a><span class="kn">from</span> <span class="nn">sqlglot</span> <span class="kn">import</span> <span class="n">alias</span><span class="p">,</span> <span class="n">exp</span> -</span><span id="L-5"><a href="#L-5"><span class="linenos"> 5</span></a><span class="kn">from</span> <span class="nn">sqlglot._typing</span> <span class="kn">import</span> <span class="n">E</span> -</span><span id="L-6"><a href="#L-6"><span class="linenos"> 6</span></a><span class="kn">from</span> <span class="nn">sqlglot.helper</span> <span class="kn">import</span> <span class="n">csv_reader</span><span class="p">,</span> <span class="n">name_sequence</span> -</span><span id="L-7"><a href="#L-7"><span class="linenos"> 7</span></a><span class="kn">from</span> <span class="nn">sqlglot.optimizer.scope</span> <span class="kn">import</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">traverse_scope</span> -</span><span id="L-8"><a href="#L-8"><span class="linenos"> 8</span></a><span class="kn">from</span> <span class="nn">sqlglot.schema</span> <span class="kn">import</span> <span class="n">Schema</span> -</span><span id="L-9"><a href="#L-9"><span class="linenos"> 9</span></a> -</span><span id="L-10"><a href="#L-10"><span class="linenos">10</span></a> -</span><span id="L-11"><a href="#L-11"><span class="linenos">11</span></a><span class="k">def</span> <span class="nf">qualify_tables</span><span class="p">(</span> -</span><span id="L-12"><a href="#L-12"><span class="linenos">12</span></a> <span class="n">expression</span><span class="p">:</span> <span class="n">E</span><span class="p">,</span> -</span><span id="L-13"><a href="#L-13"><span class="linenos">13</span></a> <span class="n">db</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> -</span><span id="L-14"><a href="#L-14"><span class="linenos">14</span></a> <span class="n">catalog</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> -</span><span id="L-15"><a href="#L-15"><span class="linenos">15</span></a> <span class="n">schema</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">Schema</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> -</span><span id="L-16"><a href="#L-16"><span class="linenos">16</span></a><span class="p">)</span> <span class="o">-></span> <span class="n">E</span><span class="p">:</span> -</span><span id="L-17"><a href="#L-17"><span class="linenos">17</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-18"><a href="#L-18"><span class="linenos">18</span></a><span class="sd"> Rewrite sqlglot AST to have fully qualified tables. Join constructs such as</span> -</span><span id="L-19"><a href="#L-19"><span class="linenos">19</span></a><span class="sd"> (t1 JOIN t2) AS t will be expanded into (SELECT * FROM t1 AS t1, t2 AS t2) AS t.</span> -</span><span id="L-20"><a href="#L-20"><span class="linenos">20</span></a> -</span><span id="L-21"><a href="#L-21"><span class="linenos">21</span></a><span class="sd"> Examples:</span> -</span><span id="L-22"><a href="#L-22"><span class="linenos">22</span></a><span class="sd"> >>> import sqlglot</span> -</span><span id="L-23"><a href="#L-23"><span class="linenos">23</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT 1 FROM tbl")</span> -</span><span id="L-24"><a href="#L-24"><span class="linenos">24</span></a><span class="sd"> >>> qualify_tables(expression, db="db").sql()</span> -</span><span id="L-25"><a href="#L-25"><span class="linenos">25</span></a><span class="sd"> 'SELECT 1 FROM db.tbl AS tbl'</span> -</span><span id="L-26"><a href="#L-26"><span class="linenos">26</span></a><span class="sd"> >>></span> -</span><span id="L-27"><a href="#L-27"><span class="linenos">27</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT 1 FROM (t1 JOIN t2) AS t")</span> -</span><span id="L-28"><a href="#L-28"><span class="linenos">28</span></a><span class="sd"> >>> qualify_tables(expression).sql()</span> -</span><span id="L-29"><a href="#L-29"><span class="linenos">29</span></a><span class="sd"> 'SELECT 1 FROM (SELECT * FROM t1 AS t1, t2 AS t2) AS t'</span> -</span><span id="L-30"><a href="#L-30"><span class="linenos">30</span></a> -</span><span id="L-31"><a href="#L-31"><span class="linenos">31</span></a><span class="sd"> Args:</span> -</span><span id="L-32"><a href="#L-32"><span class="linenos">32</span></a><span class="sd"> expression: Expression to qualify</span> -</span><span id="L-33"><a href="#L-33"><span class="linenos">33</span></a><span class="sd"> db: Database name</span> -</span><span id="L-34"><a href="#L-34"><span class="linenos">34</span></a><span class="sd"> catalog: Catalog name</span> -</span><span id="L-35"><a href="#L-35"><span class="linenos">35</span></a><span class="sd"> schema: A schema to populate</span> -</span><span id="L-36"><a href="#L-36"><span class="linenos">36</span></a> -</span><span id="L-37"><a href="#L-37"><span class="linenos">37</span></a><span class="sd"> Returns:</span> -</span><span id="L-38"><a href="#L-38"><span class="linenos">38</span></a><span class="sd"> The qualified expression.</span> -</span><span id="L-39"><a href="#L-39"><span class="linenos">39</span></a><span class="sd"> """</span> -</span><span id="L-40"><a href="#L-40"><span class="linenos">40</span></a> <span class="n">next_alias_name</span> <span class="o">=</span> <span class="n">name_sequence</span><span class="p">(</span><span class="s2">"_q_"</span><span class="p">)</span> -</span><span id="L-41"><a href="#L-41"><span class="linenos">41</span></a> -</span><span id="L-42"><a href="#L-42"><span class="linenos">42</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-43"><a href="#L-43"><span class="linenos">43</span></a> <span class="k">for</span> <span class="n">derived_table</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">ctes</span><span class="p">,</span> <span class="n">scope</span><span class="o">.</span><span class="n">derived_tables</span><span class="p">):</span> -</span><span id="L-44"><a href="#L-44"><span class="linenos">44</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">derived_table</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-45"><a href="#L-45"><span class="linenos">45</span></a> <span class="n">unnested</span> <span class="o">=</span> <span class="n">derived_table</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span> -</span><span id="L-46"><a href="#L-46"><span class="linenos">46</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">unnested</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> -</span><span id="L-47"><a href="#L-47"><span class="linenos">47</span></a> <span class="n">joins</span> <span class="o">=</span> <span class="n">unnested</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> -</span><span id="L-48"><a href="#L-48"><span class="linenos">48</span></a> <span class="n">derived_table</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">select</span><span class="p">(</span><span class="s2">"*"</span><span class="p">)</span><span class="o">.</span><span class="n">from_</span><span class="p">(</span><span class="n">unnested</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">))</span> -</span><span id="L-49"><a href="#L-49"><span class="linenos">49</span></a> <span class="n">derived_table</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="n">joins</span><span class="p">)</span> -</span><span id="L-50"><a href="#L-50"><span class="linenos">50</span></a> -</span><span id="L-51"><a href="#L-51"><span class="linenos">51</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">derived_table</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">):</span> -</span><span id="L-52"><a href="#L-52"><span class="linenos">52</span></a> <span class="n">alias_</span> <span class="o">=</span> <span class="n">next_alias_name</span><span class="p">()</span> -</span><span id="L-53"><a href="#L-53"><span class="linenos">53</span></a> <span class="n">derived_table</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">alias_</span><span class="p">)))</span> -</span><span id="L-54"><a href="#L-54"><span class="linenos">54</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">rename_source</span><span class="p">(</span><span class="kc">None</span><span class="p">,</span> <span class="n">alias_</span><span class="p">)</span> -</span><span id="L-55"><a href="#L-55"><span class="linenos">55</span></a> -</span><span id="L-56"><a href="#L-56"><span class="linenos">56</span></a> <span class="n">pivots</span> <span class="o">=</span> <span class="n">derived_table</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"pivots"</span><span class="p">)</span> -</span><span id="L-57"><a href="#L-57"><span class="linenos">57</span></a> <span class="k">if</span> <span class="n">pivots</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span> -</span><span id="L-58"><a href="#L-58"><span class="linenos">58</span></a> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">())))</span> -</span><span id="L-59"><a href="#L-59"><span class="linenos">59</span></a> -</span><span id="L-60"><a href="#L-60"><span class="linenos">60</span></a> <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">items</span><span class="p">():</span> -</span><span id="L-61"><a href="#L-61"><span class="linenos">61</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> -</span><span id="L-62"><a href="#L-62"><span class="linenos">62</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">):</span> -</span><span id="L-63"><a href="#L-63"><span class="linenos">63</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source</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">"db"</span><span class="p">):</span> -</span><span id="L-64"><a href="#L-64"><span class="linenos">64</span></a> <span class="n">source</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"db"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">db</span><span class="p">))</span> -</span><span id="L-65"><a href="#L-65"><span class="linenos">65</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source</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">"catalog"</span><span class="p">):</span> -</span><span id="L-66"><a href="#L-66"><span class="linenos">66</span></a> <span class="n">source</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"catalog"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">catalog</span><span class="p">))</span> -</span><span id="L-67"><a href="#L-67"><span class="linenos">67</span></a> -</span><span id="L-68"><a href="#L-68"><span class="linenos">68</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span> -</span><span id="L-69"><a href="#L-69"><span class="linenos">69</span></a> <span class="c1"># Mutates the source by attaching an alias to it</span> -</span><span id="L-70"><a href="#L-70"><span class="linenos">70</span></a> <span class="n">alias</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">name</span> <span class="ow">or</span> <span class="n">source</span><span class="o">.</span><span class="n">name</span> <span class="ow">or</span> <span class="n">next_alias_name</span><span class="p">(),</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> -</span><span id="L-71"><a href="#L-71"><span class="linenos">71</span></a> -</span><span id="L-72"><a href="#L-72"><span class="linenos">72</span></a> <span class="n">pivots</span> <span class="o">=</span> <span class="n">source</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">"pivots"</span><span class="p">)</span> -</span><span id="L-73"><a href="#L-73"><span class="linenos">73</span></a> <span class="k">if</span> <span class="n">pivots</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span> -</span><span id="L-74"><a href="#L-74"><span class="linenos">74</span></a> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">set</span><span class="p">(</span> -</span><span id="L-75"><a href="#L-75"><span class="linenos">75</span></a> <span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">()))</span> -</span><span id="L-76"><a href="#L-76"><span class="linenos">76</span></a> <span class="p">)</span> -</span><span id="L-77"><a href="#L-77"><span class="linenos">77</span></a> -</span><span id="L-78"><a href="#L-78"><span class="linenos">78</span></a> <span class="k">if</span> <span class="n">schema</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">ReadCSV</span><span class="p">):</span> -</span><span id="L-79"><a href="#L-79"><span class="linenos">79</span></a> <span class="k">with</span> <span class="n">csv_reader</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> <span class="k">as</span> <span class="n">reader</span><span class="p">:</span> -</span><span id="L-80"><a href="#L-80"><span class="linenos">80</span></a> <span class="n">header</span> <span class="o">=</span> <span class="nb">next</span><span class="p">(</span><span class="n">reader</span><span class="p">)</span> -</span><span id="L-81"><a href="#L-81"><span class="linenos">81</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="nb">next</span><span class="p">(</span><span class="n">reader</span><span class="p">)</span> -</span><span id="L-82"><a href="#L-82"><span class="linenos">82</span></a> <span class="n">schema</span><span class="o">.</span><span class="n">add_table</span><span class="p">(</span> -</span><span id="L-83"><a href="#L-83"><span class="linenos">83</span></a> <span class="n">source</span><span class="p">,</span> <span class="p">{</span><span class="n">k</span><span class="p">:</span> <span class="nb">type</span><span class="p">(</span><span class="n">v</span><span class="p">)</span><span class="o">.</span><span class="vm">__name__</span> <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span><span class="n">header</span><span class="p">,</span> <span class="n">columns</span><span class="p">)}</span> -</span><span id="L-84"><a href="#L-84"><span class="linenos">84</span></a> <span class="p">)</span> -</span><span id="L-85"><a href="#L-85"><span class="linenos">85</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="n">source</span><span class="o">.</span><span class="n">is_udtf</span><span class="p">:</span> -</span><span id="L-86"><a href="#L-86"><span class="linenos">86</span></a> <span class="n">udtf</span> <span class="o">=</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span> -</span><span id="L-87"><a href="#L-87"><span class="linenos">87</span></a> <span class="n">table_alias</span> <span class="o">=</span> <span class="n">udtf</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> <span class="ow">or</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span> -</span><span id="L-88"><a href="#L-88"><span class="linenos">88</span></a> <span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">())</span> -</span><span id="L-89"><a href="#L-89"><span class="linenos">89</span></a> <span class="p">)</span> -</span><span id="L-90"><a href="#L-90"><span class="linenos">90</span></a> <span class="n">udtf</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">table_alias</span><span class="p">)</span> -</span><span id="L-91"><a href="#L-91"><span class="linenos">91</span></a> -</span><span id="L-92"><a href="#L-92"><span class="linenos">92</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_alias</span><span class="o">.</span><span class="n">name</span><span class="p">:</span> -</span><span id="L-93"><a href="#L-93"><span class="linenos">93</span></a> <span class="n">table_alias</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"this"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">()))</span> -</span><span id="L-94"><a href="#L-94"><span class="linenos">94</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">udtf</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">table_alias</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span> -</span><span id="L-95"><a href="#L-95"><span class="linenos">95</span></a> <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">udtf</span><span class="o">.</span><span class="n">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">expressions</span><span class="p">):</span> -</span><span id="L-96"><a href="#L-96"><span class="linenos">96</span></a> <span class="n">table_alias</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s2">"columns"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="sa">f</span><span class="s2">"_col_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">"</span><span class="p">))</span> -</span><span id="L-97"><a href="#L-97"><span class="linenos">97</span></a> -</span><span id="L-98"><a href="#L-98"><span class="linenos">98</span></a> <span class="k">return</span> <span class="n">expression</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="L-1"><a href="#L-1"><span class="linenos"> 1</span></a><span class="kn">import</span> <span class="nn">itertools</span> +</span><span id="L-2"><a href="#L-2"><span class="linenos"> 2</span></a><span class="kn">import</span> <span class="nn">typing</span> <span class="k">as</span> <span class="nn">t</span> +</span><span id="L-3"><a href="#L-3"><span class="linenos"> 3</span></a> +</span><span id="L-4"><a href="#L-4"><span class="linenos"> 4</span></a><span class="kn">from</span> <span class="nn">sqlglot</span> <span class="kn">import</span> <span class="n">alias</span><span class="p">,</span> <span class="n">exp</span> +</span><span id="L-5"><a href="#L-5"><span class="linenos"> 5</span></a><span class="kn">from</span> <span class="nn">sqlglot._typing</span> <span class="kn">import</span> <span class="n">E</span> +</span><span id="L-6"><a href="#L-6"><span class="linenos"> 6</span></a><span class="kn">from</span> <span class="nn">sqlglot.helper</span> <span class="kn">import</span> <span class="n">csv_reader</span><span class="p">,</span> <span class="n">name_sequence</span> +</span><span id="L-7"><a href="#L-7"><span class="linenos"> 7</span></a><span class="kn">from</span> <span class="nn">sqlglot.optimizer.scope</span> <span class="kn">import</span> <span class="n">Scope</span><span class="p">,</span> <span class="n">traverse_scope</span> +</span><span id="L-8"><a href="#L-8"><span class="linenos"> 8</span></a><span class="kn">from</span> <span class="nn">sqlglot.schema</span> <span class="kn">import</span> <span class="n">Schema</span> +</span><span id="L-9"><a href="#L-9"><span class="linenos"> 9</span></a> +</span><span id="L-10"><a href="#L-10"><span class="linenos"> 10</span></a> +</span><span id="L-11"><a href="#L-11"><span class="linenos"> 11</span></a><span class="k">def</span> <span class="nf">qualify_tables</span><span class="p">(</span> +</span><span id="L-12"><a href="#L-12"><span class="linenos"> 12</span></a> <span class="n">expression</span><span class="p">:</span> <span class="n">E</span><span class="p">,</span> +</span><span id="L-13"><a href="#L-13"><span class="linenos"> 13</span></a> <span class="n">db</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> +</span><span id="L-14"><a href="#L-14"><span class="linenos"> 14</span></a> <span class="n">catalog</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> +</span><span id="L-15"><a href="#L-15"><span class="linenos"> 15</span></a> <span class="n">schema</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">Schema</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> +</span><span id="L-16"><a href="#L-16"><span class="linenos"> 16</span></a><span class="p">)</span> <span class="o">-></span> <span class="n">E</span><span class="p">:</span> +</span><span id="L-17"><a href="#L-17"><span class="linenos"> 17</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-18"><a href="#L-18"><span class="linenos"> 18</span></a><span class="sd"> Rewrite sqlglot AST to have fully qualified tables. Join constructs such as</span> +</span><span id="L-19"><a href="#L-19"><span class="linenos"> 19</span></a><span class="sd"> (t1 JOIN t2) AS t will be expanded into (SELECT * FROM t1 AS t1, t2 AS t2) AS t.</span> +</span><span id="L-20"><a href="#L-20"><span class="linenos"> 20</span></a> +</span><span id="L-21"><a href="#L-21"><span class="linenos"> 21</span></a><span class="sd"> Examples:</span> +</span><span id="L-22"><a href="#L-22"><span class="linenos"> 22</span></a><span class="sd"> >>> import sqlglot</span> +</span><span id="L-23"><a href="#L-23"><span class="linenos"> 23</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT 1 FROM tbl")</span> +</span><span id="L-24"><a href="#L-24"><span class="linenos"> 24</span></a><span class="sd"> >>> qualify_tables(expression, db="db").sql()</span> +</span><span id="L-25"><a href="#L-25"><span class="linenos"> 25</span></a><span class="sd"> 'SELECT 1 FROM db.tbl AS tbl'</span> +</span><span id="L-26"><a href="#L-26"><span class="linenos"> 26</span></a><span class="sd"> >>></span> +</span><span id="L-27"><a href="#L-27"><span class="linenos"> 27</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT 1 FROM (t1 JOIN t2) AS t")</span> +</span><span id="L-28"><a href="#L-28"><span class="linenos"> 28</span></a><span class="sd"> >>> qualify_tables(expression).sql()</span> +</span><span id="L-29"><a href="#L-29"><span class="linenos"> 29</span></a><span class="sd"> 'SELECT 1 FROM (SELECT * FROM t1 AS t1, t2 AS t2) AS t'</span> +</span><span id="L-30"><a href="#L-30"><span class="linenos"> 30</span></a> +</span><span id="L-31"><a href="#L-31"><span class="linenos"> 31</span></a><span class="sd"> Args:</span> +</span><span id="L-32"><a href="#L-32"><span class="linenos"> 32</span></a><span class="sd"> expression: Expression to qualify</span> +</span><span id="L-33"><a href="#L-33"><span class="linenos"> 33</span></a><span class="sd"> db: Database name</span> +</span><span id="L-34"><a href="#L-34"><span class="linenos"> 34</span></a><span class="sd"> catalog: Catalog name</span> +</span><span id="L-35"><a href="#L-35"><span class="linenos"> 35</span></a><span class="sd"> schema: A schema to populate</span> +</span><span id="L-36"><a href="#L-36"><span class="linenos"> 36</span></a> +</span><span id="L-37"><a href="#L-37"><span class="linenos"> 37</span></a><span class="sd"> Returns:</span> +</span><span id="L-38"><a href="#L-38"><span class="linenos"> 38</span></a><span class="sd"> The qualified expression.</span> +</span><span id="L-39"><a href="#L-39"><span class="linenos"> 39</span></a><span class="sd"> """</span> +</span><span id="L-40"><a href="#L-40"><span class="linenos"> 40</span></a> <span class="n">next_alias_name</span> <span class="o">=</span> <span class="n">name_sequence</span><span class="p">(</span><span class="s2">"_q_"</span><span class="p">)</span> +</span><span id="L-41"><a href="#L-41"><span class="linenos"> 41</span></a> +</span><span id="L-42"><a href="#L-42"><span class="linenos"> 42</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-43"><a href="#L-43"><span class="linenos"> 43</span></a> <span class="k">for</span> <span class="n">derived_table</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">ctes</span><span class="p">,</span> <span class="n">scope</span><span class="o">.</span><span class="n">derived_tables</span><span class="p">):</span> +</span><span id="L-44"><a href="#L-44"><span class="linenos"> 44</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">derived_table</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-45"><a href="#L-45"><span class="linenos"> 45</span></a> <span class="n">unnested</span> <span class="o">=</span> <span class="n">derived_table</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span> +</span><span id="L-46"><a href="#L-46"><span class="linenos"> 46</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">unnested</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> +</span><span id="L-47"><a href="#L-47"><span class="linenos"> 47</span></a> <span class="n">joins</span> <span class="o">=</span> <span class="n">unnested</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> +</span><span id="L-48"><a href="#L-48"><span class="linenos"> 48</span></a> <span class="n">derived_table</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">select</span><span class="p">(</span><span class="s2">"*"</span><span class="p">)</span><span class="o">.</span><span class="n">from_</span><span class="p">(</span><span class="n">unnested</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">))</span> +</span><span id="L-49"><a href="#L-49"><span class="linenos"> 49</span></a> <span class="n">derived_table</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="n">joins</span><span class="p">)</span> +</span><span id="L-50"><a href="#L-50"><span class="linenos"> 50</span></a> +</span><span id="L-51"><a href="#L-51"><span class="linenos"> 51</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">derived_table</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">):</span> +</span><span id="L-52"><a href="#L-52"><span class="linenos"> 52</span></a> <span class="n">alias_</span> <span class="o">=</span> <span class="n">next_alias_name</span><span class="p">()</span> +</span><span id="L-53"><a href="#L-53"><span class="linenos"> 53</span></a> <span class="n">derived_table</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">alias_</span><span class="p">)))</span> +</span><span id="L-54"><a href="#L-54"><span class="linenos"> 54</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">rename_source</span><span class="p">(</span><span class="kc">None</span><span class="p">,</span> <span class="n">alias_</span><span class="p">)</span> +</span><span id="L-55"><a href="#L-55"><span class="linenos"> 55</span></a> +</span><span id="L-56"><a href="#L-56"><span class="linenos"> 56</span></a> <span class="n">pivots</span> <span class="o">=</span> <span class="n">derived_table</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"pivots"</span><span class="p">)</span> +</span><span id="L-57"><a href="#L-57"><span class="linenos"> 57</span></a> <span class="k">if</span> <span class="n">pivots</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span> +</span><span id="L-58"><a href="#L-58"><span class="linenos"> 58</span></a> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">())))</span> +</span><span id="L-59"><a href="#L-59"><span class="linenos"> 59</span></a> +</span><span id="L-60"><a href="#L-60"><span class="linenos"> 60</span></a> <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">items</span><span class="p">():</span> +</span><span id="L-61"><a href="#L-61"><span class="linenos"> 61</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> +</span><span id="L-62"><a href="#L-62"><span class="linenos"> 62</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">):</span> +</span><span id="L-63"><a href="#L-63"><span class="linenos"> 63</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source</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">"db"</span><span class="p">):</span> +</span><span id="L-64"><a href="#L-64"><span class="linenos"> 64</span></a> <span class="n">source</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"db"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">db</span><span class="p">))</span> +</span><span id="L-65"><a href="#L-65"><span class="linenos"> 65</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source</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">"catalog"</span><span class="p">):</span> +</span><span id="L-66"><a href="#L-66"><span class="linenos"> 66</span></a> <span class="n">source</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"catalog"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">catalog</span><span class="p">))</span> +</span><span id="L-67"><a href="#L-67"><span class="linenos"> 67</span></a> +</span><span id="L-68"><a href="#L-68"><span class="linenos"> 68</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span> +</span><span id="L-69"><a href="#L-69"><span class="linenos"> 69</span></a> <span class="c1"># Mutates the source by attaching an alias to it</span> +</span><span id="L-70"><a href="#L-70"><span class="linenos"> 70</span></a> <span class="n">alias</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">name</span> <span class="ow">or</span> <span class="n">source</span><span class="o">.</span><span class="n">name</span> <span class="ow">or</span> <span class="n">next_alias_name</span><span class="p">(),</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> +</span><span id="L-71"><a href="#L-71"><span class="linenos"> 71</span></a> +</span><span id="L-72"><a href="#L-72"><span class="linenos"> 72</span></a> <span class="n">pivots</span> <span class="o">=</span> <span class="n">source</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">"pivots"</span><span class="p">)</span> +</span><span id="L-73"><a href="#L-73"><span class="linenos"> 73</span></a> <span class="k">if</span> <span class="n">pivots</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span> +</span><span id="L-74"><a href="#L-74"><span class="linenos"> 74</span></a> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">set</span><span class="p">(</span> +</span><span id="L-75"><a href="#L-75"><span class="linenos"> 75</span></a> <span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">()))</span> +</span><span id="L-76"><a href="#L-76"><span class="linenos"> 76</span></a> <span class="p">)</span> +</span><span id="L-77"><a href="#L-77"><span class="linenos"> 77</span></a> +</span><span id="L-78"><a href="#L-78"><span class="linenos"> 78</span></a> <span class="k">if</span> <span class="n">schema</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">ReadCSV</span><span class="p">):</span> +</span><span id="L-79"><a href="#L-79"><span class="linenos"> 79</span></a> <span class="k">with</span> <span class="n">csv_reader</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> <span class="k">as</span> <span class="n">reader</span><span class="p">:</span> +</span><span id="L-80"><a href="#L-80"><span class="linenos"> 80</span></a> <span class="n">header</span> <span class="o">=</span> <span class="nb">next</span><span class="p">(</span><span class="n">reader</span><span class="p">)</span> +</span><span id="L-81"><a href="#L-81"><span class="linenos"> 81</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="nb">next</span><span class="p">(</span><span class="n">reader</span><span class="p">)</span> +</span><span id="L-82"><a href="#L-82"><span class="linenos"> 82</span></a> <span class="n">schema</span><span class="o">.</span><span class="n">add_table</span><span class="p">(</span> +</span><span id="L-83"><a href="#L-83"><span class="linenos"> 83</span></a> <span class="n">source</span><span class="p">,</span> +</span><span id="L-84"><a href="#L-84"><span class="linenos"> 84</span></a> <span class="p">{</span><span class="n">k</span><span class="p">:</span> <span class="nb">type</span><span class="p">(</span><span class="n">v</span><span class="p">)</span><span class="o">.</span><span class="vm">__name__</span> <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span><span class="n">header</span><span class="p">,</span> <span class="n">columns</span><span class="p">)},</span> +</span><span id="L-85"><a href="#L-85"><span class="linenos"> 85</span></a> <span class="n">match_depth</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> +</span><span id="L-86"><a href="#L-86"><span class="linenos"> 86</span></a> <span class="p">)</span> +</span><span id="L-87"><a href="#L-87"><span class="linenos"> 87</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="n">source</span><span class="o">.</span><span class="n">is_udtf</span><span class="p">:</span> +</span><span id="L-88"><a href="#L-88"><span class="linenos"> 88</span></a> <span class="n">udtf</span> <span class="o">=</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span> +</span><span id="L-89"><a href="#L-89"><span class="linenos"> 89</span></a> <span class="n">table_alias</span> <span class="o">=</span> <span class="n">udtf</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> <span class="ow">or</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span> +</span><span id="L-90"><a href="#L-90"><span class="linenos"> 90</span></a> <span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">())</span> +</span><span id="L-91"><a href="#L-91"><span class="linenos"> 91</span></a> <span class="p">)</span> +</span><span id="L-92"><a href="#L-92"><span class="linenos"> 92</span></a> <span class="n">udtf</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">table_alias</span><span class="p">)</span> +</span><span id="L-93"><a href="#L-93"><span class="linenos"> 93</span></a> +</span><span id="L-94"><a href="#L-94"><span class="linenos"> 94</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_alias</span><span class="o">.</span><span class="n">name</span><span class="p">:</span> +</span><span id="L-95"><a href="#L-95"><span class="linenos"> 95</span></a> <span class="n">table_alias</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"this"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">()))</span> +</span><span id="L-96"><a href="#L-96"><span class="linenos"> 96</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">udtf</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">table_alias</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span> +</span><span id="L-97"><a href="#L-97"><span class="linenos"> 97</span></a> <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">udtf</span><span class="o">.</span><span class="n">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">expressions</span><span class="p">):</span> +</span><span id="L-98"><a href="#L-98"><span class="linenos"> 98</span></a> <span class="n">table_alias</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s2">"columns"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="sa">f</span><span class="s2">"_col_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">"</span><span class="p">))</span> +</span><span id="L-99"><a href="#L-99"><span class="linenos"> 99</span></a> +</span><span id="L-100"><a href="#L-100"><span class="linenos">100</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> @@ -169,94 +171,96 @@ </div> <a class="headerlink" href="#qualify_tables"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="qualify_tables-12"><a href="#qualify_tables-12"><span class="linenos">12</span></a><span class="k">def</span> <span class="nf">qualify_tables</span><span class="p">(</span> -</span><span id="qualify_tables-13"><a href="#qualify_tables-13"><span class="linenos">13</span></a> <span class="n">expression</span><span class="p">:</span> <span class="n">E</span><span class="p">,</span> -</span><span id="qualify_tables-14"><a href="#qualify_tables-14"><span class="linenos">14</span></a> <span class="n">db</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> -</span><span id="qualify_tables-15"><a href="#qualify_tables-15"><span class="linenos">15</span></a> <span class="n">catalog</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> -</span><span id="qualify_tables-16"><a href="#qualify_tables-16"><span class="linenos">16</span></a> <span class="n">schema</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">Schema</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> -</span><span id="qualify_tables-17"><a href="#qualify_tables-17"><span class="linenos">17</span></a><span class="p">)</span> <span class="o">-></span> <span class="n">E</span><span class="p">:</span> -</span><span id="qualify_tables-18"><a href="#qualify_tables-18"><span class="linenos">18</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="qualify_tables-19"><a href="#qualify_tables-19"><span class="linenos">19</span></a><span class="sd"> Rewrite sqlglot AST to have fully qualified tables. Join constructs such as</span> -</span><span id="qualify_tables-20"><a href="#qualify_tables-20"><span class="linenos">20</span></a><span class="sd"> (t1 JOIN t2) AS t will be expanded into (SELECT * FROM t1 AS t1, t2 AS t2) AS t.</span> -</span><span id="qualify_tables-21"><a href="#qualify_tables-21"><span class="linenos">21</span></a> -</span><span id="qualify_tables-22"><a href="#qualify_tables-22"><span class="linenos">22</span></a><span class="sd"> Examples:</span> -</span><span id="qualify_tables-23"><a href="#qualify_tables-23"><span class="linenos">23</span></a><span class="sd"> >>> import sqlglot</span> -</span><span id="qualify_tables-24"><a href="#qualify_tables-24"><span class="linenos">24</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT 1 FROM tbl")</span> -</span><span id="qualify_tables-25"><a href="#qualify_tables-25"><span class="linenos">25</span></a><span class="sd"> >>> qualify_tables(expression, db="db").sql()</span> -</span><span id="qualify_tables-26"><a href="#qualify_tables-26"><span class="linenos">26</span></a><span class="sd"> 'SELECT 1 FROM db.tbl AS tbl'</span> -</span><span id="qualify_tables-27"><a href="#qualify_tables-27"><span class="linenos">27</span></a><span class="sd"> >>></span> -</span><span id="qualify_tables-28"><a href="#qualify_tables-28"><span class="linenos">28</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT 1 FROM (t1 JOIN t2) AS t")</span> -</span><span id="qualify_tables-29"><a href="#qualify_tables-29"><span class="linenos">29</span></a><span class="sd"> >>> qualify_tables(expression).sql()</span> -</span><span id="qualify_tables-30"><a href="#qualify_tables-30"><span class="linenos">30</span></a><span class="sd"> 'SELECT 1 FROM (SELECT * FROM t1 AS t1, t2 AS t2) AS t'</span> -</span><span id="qualify_tables-31"><a href="#qualify_tables-31"><span class="linenos">31</span></a> -</span><span id="qualify_tables-32"><a href="#qualify_tables-32"><span class="linenos">32</span></a><span class="sd"> Args:</span> -</span><span id="qualify_tables-33"><a href="#qualify_tables-33"><span class="linenos">33</span></a><span class="sd"> expression: Expression to qualify</span> -</span><span id="qualify_tables-34"><a href="#qualify_tables-34"><span class="linenos">34</span></a><span class="sd"> db: Database name</span> -</span><span id="qualify_tables-35"><a href="#qualify_tables-35"><span class="linenos">35</span></a><span class="sd"> catalog: Catalog name</span> -</span><span id="qualify_tables-36"><a href="#qualify_tables-36"><span class="linenos">36</span></a><span class="sd"> schema: A schema to populate</span> -</span><span id="qualify_tables-37"><a href="#qualify_tables-37"><span class="linenos">37</span></a> -</span><span id="qualify_tables-38"><a href="#qualify_tables-38"><span class="linenos">38</span></a><span class="sd"> Returns:</span> -</span><span id="qualify_tables-39"><a href="#qualify_tables-39"><span class="linenos">39</span></a><span class="sd"> The qualified expression.</span> -</span><span id="qualify_tables-40"><a href="#qualify_tables-40"><span class="linenos">40</span></a><span class="sd"> """</span> -</span><span id="qualify_tables-41"><a href="#qualify_tables-41"><span class="linenos">41</span></a> <span class="n">next_alias_name</span> <span class="o">=</span> <span class="n">name_sequence</span><span class="p">(</span><span class="s2">"_q_"</span><span class="p">)</span> -</span><span id="qualify_tables-42"><a href="#qualify_tables-42"><span class="linenos">42</span></a> -</span><span id="qualify_tables-43"><a href="#qualify_tables-43"><span class="linenos">43</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="qualify_tables-44"><a href="#qualify_tables-44"><span class="linenos">44</span></a> <span class="k">for</span> <span class="n">derived_table</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">ctes</span><span class="p">,</span> <span class="n">scope</span><span class="o">.</span><span class="n">derived_tables</span><span class="p">):</span> -</span><span id="qualify_tables-45"><a href="#qualify_tables-45"><span class="linenos">45</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">derived_table</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="qualify_tables-46"><a href="#qualify_tables-46"><span class="linenos">46</span></a> <span class="n">unnested</span> <span class="o">=</span> <span class="n">derived_table</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span> -</span><span id="qualify_tables-47"><a href="#qualify_tables-47"><span class="linenos">47</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">unnested</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> -</span><span id="qualify_tables-48"><a href="#qualify_tables-48"><span class="linenos">48</span></a> <span class="n">joins</span> <span class="o">=</span> <span class="n">unnested</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> -</span><span id="qualify_tables-49"><a href="#qualify_tables-49"><span class="linenos">49</span></a> <span class="n">derived_table</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">select</span><span class="p">(</span><span class="s2">"*"</span><span class="p">)</span><span class="o">.</span><span class="n">from_</span><span class="p">(</span><span class="n">unnested</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">))</span> -</span><span id="qualify_tables-50"><a href="#qualify_tables-50"><span class="linenos">50</span></a> <span class="n">derived_table</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="n">joins</span><span class="p">)</span> -</span><span id="qualify_tables-51"><a href="#qualify_tables-51"><span class="linenos">51</span></a> -</span><span id="qualify_tables-52"><a href="#qualify_tables-52"><span class="linenos">52</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">derived_table</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">):</span> -</span><span id="qualify_tables-53"><a href="#qualify_tables-53"><span class="linenos">53</span></a> <span class="n">alias_</span> <span class="o">=</span> <span class="n">next_alias_name</span><span class="p">()</span> -</span><span id="qualify_tables-54"><a href="#qualify_tables-54"><span class="linenos">54</span></a> <span class="n">derived_table</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">alias_</span><span class="p">)))</span> -</span><span id="qualify_tables-55"><a href="#qualify_tables-55"><span class="linenos">55</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">rename_source</span><span class="p">(</span><span class="kc">None</span><span class="p">,</span> <span class="n">alias_</span><span class="p">)</span> -</span><span id="qualify_tables-56"><a href="#qualify_tables-56"><span class="linenos">56</span></a> -</span><span id="qualify_tables-57"><a href="#qualify_tables-57"><span class="linenos">57</span></a> <span class="n">pivots</span> <span class="o">=</span> <span class="n">derived_table</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"pivots"</span><span class="p">)</span> -</span><span id="qualify_tables-58"><a href="#qualify_tables-58"><span class="linenos">58</span></a> <span class="k">if</span> <span class="n">pivots</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span> -</span><span id="qualify_tables-59"><a href="#qualify_tables-59"><span class="linenos">59</span></a> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">())))</span> -</span><span id="qualify_tables-60"><a href="#qualify_tables-60"><span class="linenos">60</span></a> -</span><span id="qualify_tables-61"><a href="#qualify_tables-61"><span class="linenos">61</span></a> <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">items</span><span class="p">():</span> -</span><span id="qualify_tables-62"><a href="#qualify_tables-62"><span class="linenos">62</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> -</span><span id="qualify_tables-63"><a href="#qualify_tables-63"><span class="linenos">63</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">):</span> -</span><span id="qualify_tables-64"><a href="#qualify_tables-64"><span class="linenos">64</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source</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">"db"</span><span class="p">):</span> -</span><span id="qualify_tables-65"><a href="#qualify_tables-65"><span class="linenos">65</span></a> <span class="n">source</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"db"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">db</span><span class="p">))</span> -</span><span id="qualify_tables-66"><a href="#qualify_tables-66"><span class="linenos">66</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source</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">"catalog"</span><span class="p">):</span> -</span><span id="qualify_tables-67"><a href="#qualify_tables-67"><span class="linenos">67</span></a> <span class="n">source</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"catalog"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">catalog</span><span class="p">))</span> -</span><span id="qualify_tables-68"><a href="#qualify_tables-68"><span class="linenos">68</span></a> -</span><span id="qualify_tables-69"><a href="#qualify_tables-69"><span class="linenos">69</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span> -</span><span id="qualify_tables-70"><a href="#qualify_tables-70"><span class="linenos">70</span></a> <span class="c1"># Mutates the source by attaching an alias to it</span> -</span><span id="qualify_tables-71"><a href="#qualify_tables-71"><span class="linenos">71</span></a> <span class="n">alias</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">name</span> <span class="ow">or</span> <span class="n">source</span><span class="o">.</span><span class="n">name</span> <span class="ow">or</span> <span class="n">next_alias_name</span><span class="p">(),</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> -</span><span id="qualify_tables-72"><a href="#qualify_tables-72"><span class="linenos">72</span></a> -</span><span id="qualify_tables-73"><a href="#qualify_tables-73"><span class="linenos">73</span></a> <span class="n">pivots</span> <span class="o">=</span> <span class="n">source</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">"pivots"</span><span class="p">)</span> -</span><span id="qualify_tables-74"><a href="#qualify_tables-74"><span class="linenos">74</span></a> <span class="k">if</span> <span class="n">pivots</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span> -</span><span id="qualify_tables-75"><a href="#qualify_tables-75"><span class="linenos">75</span></a> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">set</span><span class="p">(</span> -</span><span id="qualify_tables-76"><a href="#qualify_tables-76"><span class="linenos">76</span></a> <span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">()))</span> -</span><span id="qualify_tables-77"><a href="#qualify_tables-77"><span class="linenos">77</span></a> <span class="p">)</span> -</span><span id="qualify_tables-78"><a href="#qualify_tables-78"><span class="linenos">78</span></a> -</span><span id="qualify_tables-79"><a href="#qualify_tables-79"><span class="linenos">79</span></a> <span class="k">if</span> <span class="n">schema</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">ReadCSV</span><span class="p">):</span> -</span><span id="qualify_tables-80"><a href="#qualify_tables-80"><span class="linenos">80</span></a> <span class="k">with</span> <span class="n">csv_reader</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> <span class="k">as</span> <span class="n">reader</span><span class="p">:</span> -</span><span id="qualify_tables-81"><a href="#qualify_tables-81"><span class="linenos">81</span></a> <span class="n">header</span> <span class="o">=</span> <span class="nb">next</span><span class="p">(</span><span class="n">reader</span><span class="p">)</span> -</span><span id="qualify_tables-82"><a href="#qualify_tables-82"><span class="linenos">82</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="nb">next</span><span class="p">(</span><span class="n">reader</span><span class="p">)</span> -</span><span id="qualify_tables-83"><a href="#qualify_tables-83"><span class="linenos">83</span></a> <span class="n">schema</span><span class="o">.</span><span class="n">add_table</span><span class="p">(</span> -</span><span id="qualify_tables-84"><a href="#qualify_tables-84"><span class="linenos">84</span></a> <span class="n">source</span><span class="p">,</span> <span class="p">{</span><span class="n">k</span><span class="p">:</span> <span class="nb">type</span><span class="p">(</span><span class="n">v</span><span class="p">)</span><span class="o">.</span><span class="vm">__name__</span> <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span><span class="n">header</span><span class="p">,</span> <span class="n">columns</span><span class="p">)}</span> -</span><span id="qualify_tables-85"><a href="#qualify_tables-85"><span class="linenos">85</span></a> <span class="p">)</span> -</span><span id="qualify_tables-86"><a href="#qualify_tables-86"><span class="linenos">86</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="n">source</span><span class="o">.</span><span class="n">is_udtf</span><span class="p">:</span> -</span><span id="qualify_tables-87"><a href="#qualify_tables-87"><span class="linenos">87</span></a> <span class="n">udtf</span> <span class="o">=</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span> -</span><span id="qualify_tables-88"><a href="#qualify_tables-88"><span class="linenos">88</span></a> <span class="n">table_alias</span> <span class="o">=</span> <span class="n">udtf</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> <span class="ow">or</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span> -</span><span id="qualify_tables-89"><a href="#qualify_tables-89"><span class="linenos">89</span></a> <span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">())</span> -</span><span id="qualify_tables-90"><a href="#qualify_tables-90"><span class="linenos">90</span></a> <span class="p">)</span> -</span><span id="qualify_tables-91"><a href="#qualify_tables-91"><span class="linenos">91</span></a> <span class="n">udtf</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">table_alias</span><span class="p">)</span> -</span><span id="qualify_tables-92"><a href="#qualify_tables-92"><span class="linenos">92</span></a> -</span><span id="qualify_tables-93"><a href="#qualify_tables-93"><span class="linenos">93</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_alias</span><span class="o">.</span><span class="n">name</span><span class="p">:</span> -</span><span id="qualify_tables-94"><a href="#qualify_tables-94"><span class="linenos">94</span></a> <span class="n">table_alias</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"this"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">()))</span> -</span><span id="qualify_tables-95"><a href="#qualify_tables-95"><span class="linenos">95</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">udtf</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">table_alias</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span> -</span><span id="qualify_tables-96"><a href="#qualify_tables-96"><span class="linenos">96</span></a> <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">udtf</span><span class="o">.</span><span class="n">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">expressions</span><span class="p">):</span> -</span><span id="qualify_tables-97"><a href="#qualify_tables-97"><span class="linenos">97</span></a> <span class="n">table_alias</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s2">"columns"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="sa">f</span><span class="s2">"_col_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">"</span><span class="p">))</span> -</span><span id="qualify_tables-98"><a href="#qualify_tables-98"><span class="linenos">98</span></a> -</span><span id="qualify_tables-99"><a href="#qualify_tables-99"><span class="linenos">99</span></a> <span class="k">return</span> <span class="n">expression</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="qualify_tables-12"><a href="#qualify_tables-12"><span class="linenos"> 12</span></a><span class="k">def</span> <span class="nf">qualify_tables</span><span class="p">(</span> +</span><span id="qualify_tables-13"><a href="#qualify_tables-13"><span class="linenos"> 13</span></a> <span class="n">expression</span><span class="p">:</span> <span class="n">E</span><span class="p">,</span> +</span><span id="qualify_tables-14"><a href="#qualify_tables-14"><span class="linenos"> 14</span></a> <span class="n">db</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> +</span><span id="qualify_tables-15"><a href="#qualify_tables-15"><span class="linenos"> 15</span></a> <span class="n">catalog</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="nb">str</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> +</span><span id="qualify_tables-16"><a href="#qualify_tables-16"><span class="linenos"> 16</span></a> <span class="n">schema</span><span class="p">:</span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">Schema</span><span class="p">]</span> <span class="o">=</span> <span class="kc">None</span><span class="p">,</span> +</span><span id="qualify_tables-17"><a href="#qualify_tables-17"><span class="linenos"> 17</span></a><span class="p">)</span> <span class="o">-></span> <span class="n">E</span><span class="p">:</span> +</span><span id="qualify_tables-18"><a href="#qualify_tables-18"><span class="linenos"> 18</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="qualify_tables-19"><a href="#qualify_tables-19"><span class="linenos"> 19</span></a><span class="sd"> Rewrite sqlglot AST to have fully qualified tables. Join constructs such as</span> +</span><span id="qualify_tables-20"><a href="#qualify_tables-20"><span class="linenos"> 20</span></a><span class="sd"> (t1 JOIN t2) AS t will be expanded into (SELECT * FROM t1 AS t1, t2 AS t2) AS t.</span> +</span><span id="qualify_tables-21"><a href="#qualify_tables-21"><span class="linenos"> 21</span></a> +</span><span id="qualify_tables-22"><a href="#qualify_tables-22"><span class="linenos"> 22</span></a><span class="sd"> Examples:</span> +</span><span id="qualify_tables-23"><a href="#qualify_tables-23"><span class="linenos"> 23</span></a><span class="sd"> >>> import sqlglot</span> +</span><span id="qualify_tables-24"><a href="#qualify_tables-24"><span class="linenos"> 24</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT 1 FROM tbl")</span> +</span><span id="qualify_tables-25"><a href="#qualify_tables-25"><span class="linenos"> 25</span></a><span class="sd"> >>> qualify_tables(expression, db="db").sql()</span> +</span><span id="qualify_tables-26"><a href="#qualify_tables-26"><span class="linenos"> 26</span></a><span class="sd"> 'SELECT 1 FROM db.tbl AS tbl'</span> +</span><span id="qualify_tables-27"><a href="#qualify_tables-27"><span class="linenos"> 27</span></a><span class="sd"> >>></span> +</span><span id="qualify_tables-28"><a href="#qualify_tables-28"><span class="linenos"> 28</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT 1 FROM (t1 JOIN t2) AS t")</span> +</span><span id="qualify_tables-29"><a href="#qualify_tables-29"><span class="linenos"> 29</span></a><span class="sd"> >>> qualify_tables(expression).sql()</span> +</span><span id="qualify_tables-30"><a href="#qualify_tables-30"><span class="linenos"> 30</span></a><span class="sd"> 'SELECT 1 FROM (SELECT * FROM t1 AS t1, t2 AS t2) AS t'</span> +</span><span id="qualify_tables-31"><a href="#qualify_tables-31"><span class="linenos"> 31</span></a> +</span><span id="qualify_tables-32"><a href="#qualify_tables-32"><span class="linenos"> 32</span></a><span class="sd"> Args:</span> +</span><span id="qualify_tables-33"><a href="#qualify_tables-33"><span class="linenos"> 33</span></a><span class="sd"> expression: Expression to qualify</span> +</span><span id="qualify_tables-34"><a href="#qualify_tables-34"><span class="linenos"> 34</span></a><span class="sd"> db: Database name</span> +</span><span id="qualify_tables-35"><a href="#qualify_tables-35"><span class="linenos"> 35</span></a><span class="sd"> catalog: Catalog name</span> +</span><span id="qualify_tables-36"><a href="#qualify_tables-36"><span class="linenos"> 36</span></a><span class="sd"> schema: A schema to populate</span> +</span><span id="qualify_tables-37"><a href="#qualify_tables-37"><span class="linenos"> 37</span></a> +</span><span id="qualify_tables-38"><a href="#qualify_tables-38"><span class="linenos"> 38</span></a><span class="sd"> Returns:</span> +</span><span id="qualify_tables-39"><a href="#qualify_tables-39"><span class="linenos"> 39</span></a><span class="sd"> The qualified expression.</span> +</span><span id="qualify_tables-40"><a href="#qualify_tables-40"><span class="linenos"> 40</span></a><span class="sd"> """</span> +</span><span id="qualify_tables-41"><a href="#qualify_tables-41"><span class="linenos"> 41</span></a> <span class="n">next_alias_name</span> <span class="o">=</span> <span class="n">name_sequence</span><span class="p">(</span><span class="s2">"_q_"</span><span class="p">)</span> +</span><span id="qualify_tables-42"><a href="#qualify_tables-42"><span class="linenos"> 42</span></a> +</span><span id="qualify_tables-43"><a href="#qualify_tables-43"><span class="linenos"> 43</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="qualify_tables-44"><a href="#qualify_tables-44"><span class="linenos"> 44</span></a> <span class="k">for</span> <span class="n">derived_table</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">ctes</span><span class="p">,</span> <span class="n">scope</span><span class="o">.</span><span class="n">derived_tables</span><span class="p">):</span> +</span><span id="qualify_tables-45"><a href="#qualify_tables-45"><span class="linenos"> 45</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">derived_table</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="qualify_tables-46"><a href="#qualify_tables-46"><span class="linenos"> 46</span></a> <span class="n">unnested</span> <span class="o">=</span> <span class="n">derived_table</span><span class="o">.</span><span class="n">unnest</span><span class="p">()</span> +</span><span id="qualify_tables-47"><a href="#qualify_tables-47"><span class="linenos"> 47</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">unnested</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> +</span><span id="qualify_tables-48"><a href="#qualify_tables-48"><span class="linenos"> 48</span></a> <span class="n">joins</span> <span class="o">=</span> <span class="n">unnested</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> +</span><span id="qualify_tables-49"><a href="#qualify_tables-49"><span class="linenos"> 49</span></a> <span class="n">derived_table</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">select</span><span class="p">(</span><span class="s2">"*"</span><span class="p">)</span><span class="o">.</span><span class="n">from_</span><span class="p">(</span><span class="n">unnested</span><span class="o">.</span><span class="n">copy</span><span class="p">(),</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">))</span> +</span><span id="qualify_tables-50"><a href="#qualify_tables-50"><span class="linenos"> 50</span></a> <span class="n">derived_table</span><span class="o">.</span><span class="n">this</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="n">joins</span><span class="p">)</span> +</span><span id="qualify_tables-51"><a href="#qualify_tables-51"><span class="linenos"> 51</span></a> +</span><span id="qualify_tables-52"><a href="#qualify_tables-52"><span class="linenos"> 52</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">derived_table</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">):</span> +</span><span id="qualify_tables-53"><a href="#qualify_tables-53"><span class="linenos"> 53</span></a> <span class="n">alias_</span> <span class="o">=</span> <span class="n">next_alias_name</span><span class="p">()</span> +</span><span id="qualify_tables-54"><a href="#qualify_tables-54"><span class="linenos"> 54</span></a> <span class="n">derived_table</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">alias_</span><span class="p">)))</span> +</span><span id="qualify_tables-55"><a href="#qualify_tables-55"><span class="linenos"> 55</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">rename_source</span><span class="p">(</span><span class="kc">None</span><span class="p">,</span> <span class="n">alias_</span><span class="p">)</span> +</span><span id="qualify_tables-56"><a href="#qualify_tables-56"><span class="linenos"> 56</span></a> +</span><span id="qualify_tables-57"><a href="#qualify_tables-57"><span class="linenos"> 57</span></a> <span class="n">pivots</span> <span class="o">=</span> <span class="n">derived_table</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"pivots"</span><span class="p">)</span> +</span><span id="qualify_tables-58"><a href="#qualify_tables-58"><span class="linenos"> 58</span></a> <span class="k">if</span> <span class="n">pivots</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span> +</span><span id="qualify_tables-59"><a href="#qualify_tables-59"><span class="linenos"> 59</span></a> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">())))</span> +</span><span id="qualify_tables-60"><a href="#qualify_tables-60"><span class="linenos"> 60</span></a> +</span><span id="qualify_tables-61"><a href="#qualify_tables-61"><span class="linenos"> 61</span></a> <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">items</span><span class="p">():</span> +</span><span id="qualify_tables-62"><a href="#qualify_tables-62"><span class="linenos"> 62</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> +</span><span id="qualify_tables-63"><a href="#qualify_tables-63"><span class="linenos"> 63</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Identifier</span><span class="p">):</span> +</span><span id="qualify_tables-64"><a href="#qualify_tables-64"><span class="linenos"> 64</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source</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">"db"</span><span class="p">):</span> +</span><span id="qualify_tables-65"><a href="#qualify_tables-65"><span class="linenos"> 65</span></a> <span class="n">source</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"db"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">db</span><span class="p">))</span> +</span><span id="qualify_tables-66"><a href="#qualify_tables-66"><span class="linenos"> 66</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source</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">"catalog"</span><span class="p">):</span> +</span><span id="qualify_tables-67"><a href="#qualify_tables-67"><span class="linenos"> 67</span></a> <span class="n">source</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"catalog"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">catalog</span><span class="p">))</span> +</span><span id="qualify_tables-68"><a href="#qualify_tables-68"><span class="linenos"> 68</span></a> +</span><span id="qualify_tables-69"><a href="#qualify_tables-69"><span class="linenos"> 69</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">source</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span> +</span><span id="qualify_tables-70"><a href="#qualify_tables-70"><span class="linenos"> 70</span></a> <span class="c1"># Mutates the source by attaching an alias to it</span> +</span><span id="qualify_tables-71"><a href="#qualify_tables-71"><span class="linenos"> 71</span></a> <span class="n">alias</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">name</span> <span class="ow">or</span> <span class="n">source</span><span class="o">.</span><span class="n">name</span> <span class="ow">or</span> <span class="n">next_alias_name</span><span class="p">(),</span> <span class="n">copy</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">table</span><span class="o">=</span><span class="kc">True</span><span class="p">)</span> +</span><span id="qualify_tables-72"><a href="#qualify_tables-72"><span class="linenos"> 72</span></a> +</span><span id="qualify_tables-73"><a href="#qualify_tables-73"><span class="linenos"> 73</span></a> <span class="n">pivots</span> <span class="o">=</span> <span class="n">source</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">"pivots"</span><span class="p">)</span> +</span><span id="qualify_tables-74"><a href="#qualify_tables-74"><span class="linenos"> 74</span></a> <span class="k">if</span> <span class="n">pivots</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span><span class="p">:</span> +</span><span id="qualify_tables-75"><a href="#qualify_tables-75"><span class="linenos"> 75</span></a> <span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">set</span><span class="p">(</span> +</span><span id="qualify_tables-76"><a href="#qualify_tables-76"><span class="linenos"> 76</span></a> <span class="s2">"alias"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span><span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">()))</span> +</span><span id="qualify_tables-77"><a href="#qualify_tables-77"><span class="linenos"> 77</span></a> <span class="p">)</span> +</span><span id="qualify_tables-78"><a href="#qualify_tables-78"><span class="linenos"> 78</span></a> +</span><span id="qualify_tables-79"><a href="#qualify_tables-79"><span class="linenos"> 79</span></a> <span class="k">if</span> <span class="n">schema</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">ReadCSV</span><span class="p">):</span> +</span><span id="qualify_tables-80"><a href="#qualify_tables-80"><span class="linenos"> 80</span></a> <span class="k">with</span> <span class="n">csv_reader</span><span class="p">(</span><span class="n">source</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> <span class="k">as</span> <span class="n">reader</span><span class="p">:</span> +</span><span id="qualify_tables-81"><a href="#qualify_tables-81"><span class="linenos"> 81</span></a> <span class="n">header</span> <span class="o">=</span> <span class="nb">next</span><span class="p">(</span><span class="n">reader</span><span class="p">)</span> +</span><span id="qualify_tables-82"><a href="#qualify_tables-82"><span class="linenos"> 82</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="nb">next</span><span class="p">(</span><span class="n">reader</span><span class="p">)</span> +</span><span id="qualify_tables-83"><a href="#qualify_tables-83"><span class="linenos"> 83</span></a> <span class="n">schema</span><span class="o">.</span><span class="n">add_table</span><span class="p">(</span> +</span><span id="qualify_tables-84"><a href="#qualify_tables-84"><span class="linenos"> 84</span></a> <span class="n">source</span><span class="p">,</span> +</span><span id="qualify_tables-85"><a href="#qualify_tables-85"><span class="linenos"> 85</span></a> <span class="p">{</span><span class="n">k</span><span class="p">:</span> <span class="nb">type</span><span class="p">(</span><span class="n">v</span><span class="p">)</span><span class="o">.</span><span class="vm">__name__</span> <span class="k">for</span> <span class="n">k</span><span class="p">,</span> <span class="n">v</span> <span class="ow">in</span> <span class="nb">zip</span><span class="p">(</span><span class="n">header</span><span class="p">,</span> <span class="n">columns</span><span class="p">)},</span> +</span><span id="qualify_tables-86"><a href="#qualify_tables-86"><span class="linenos"> 86</span></a> <span class="n">match_depth</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> +</span><span id="qualify_tables-87"><a href="#qualify_tables-87"><span class="linenos"> 87</span></a> <span class="p">)</span> +</span><span id="qualify_tables-88"><a href="#qualify_tables-88"><span class="linenos"> 88</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">source</span><span class="p">,</span> <span class="n">Scope</span><span class="p">)</span> <span class="ow">and</span> <span class="n">source</span><span class="o">.</span><span class="n">is_udtf</span><span class="p">:</span> +</span><span id="qualify_tables-89"><a href="#qualify_tables-89"><span class="linenos"> 89</span></a> <span class="n">udtf</span> <span class="o">=</span> <span class="n">source</span><span class="o">.</span><span class="n">expression</span> +</span><span id="qualify_tables-90"><a href="#qualify_tables-90"><span class="linenos"> 90</span></a> <span class="n">table_alias</span> <span class="o">=</span> <span class="n">udtf</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">)</span> <span class="ow">or</span> <span class="n">exp</span><span class="o">.</span><span class="n">TableAlias</span><span class="p">(</span> +</span><span id="qualify_tables-91"><a href="#qualify_tables-91"><span class="linenos"> 91</span></a> <span class="n">this</span><span class="o">=</span><span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">())</span> +</span><span id="qualify_tables-92"><a href="#qualify_tables-92"><span class="linenos"> 92</span></a> <span class="p">)</span> +</span><span id="qualify_tables-93"><a href="#qualify_tables-93"><span class="linenos"> 93</span></a> <span class="n">udtf</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"alias"</span><span class="p">,</span> <span class="n">table_alias</span><span class="p">)</span> +</span><span id="qualify_tables-94"><a href="#qualify_tables-94"><span class="linenos"> 94</span></a> +</span><span id="qualify_tables-95"><a href="#qualify_tables-95"><span class="linenos"> 95</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="n">table_alias</span><span class="o">.</span><span class="n">name</span><span class="p">:</span> +</span><span id="qualify_tables-96"><a href="#qualify_tables-96"><span class="linenos"> 96</span></a> <span class="n">table_alias</span><span class="o">.</span><span class="n">set</span><span class="p">(</span><span class="s2">"this"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="n">next_alias_name</span><span class="p">()))</span> +</span><span id="qualify_tables-97"><a href="#qualify_tables-97"><span class="linenos"> 97</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">udtf</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Values</span><span class="p">)</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">table_alias</span><span class="o">.</span><span class="n">columns</span><span class="p">:</span> +</span><span id="qualify_tables-98"><a href="#qualify_tables-98"><span class="linenos"> 98</span></a> <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">udtf</span><span class="o">.</span><span class="n">expressions</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">expressions</span><span class="p">):</span> +</span><span id="qualify_tables-99"><a href="#qualify_tables-99"><span class="linenos"> 99</span></a> <span class="n">table_alias</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="s2">"columns"</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">to_identifier</span><span class="p">(</span><span class="sa">f</span><span class="s2">"_col_</span><span class="si">{</span><span class="n">i</span><span class="si">}</span><span class="s2">"</span><span class="p">))</span> +</span><span id="qualify_tables-100"><a href="#qualify_tables-100"><span class="linenos">100</span></a> +</span><span id="qualify_tables-101"><a href="#qualify_tables-101"><span class="linenos">101</span></a> <span class="k">return</span> <span class="n">expression</span> </span></pre></div> diff --git a/docs/sqlglot/optimizer/scope.html b/docs/sqlglot/optimizer/scope.html index 608ee9b..bbbc3d6 100644 --- a/docs/sqlglot/optimizer/scope.html +++ b/docs/sqlglot/optimizer/scope.html @@ -667,323 +667,371 @@ </span><span id="L-435"><a href="#L-435"><span class="linenos">435</span></a> <span class="nd">@property</span> </span><span id="L-436"><a href="#L-436"><span class="linenos">436</span></a> <span class="k">def</span> <span class="nf">is_correlated_subquery</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> </span><span id="L-437"><a href="#L-437"><span class="linenos">437</span></a><span class="w"> </span><span class="sd">"""Determine if this scope is a correlated subquery"""</span> -</span><span id="L-438"><a href="#L-438"><span class="linenos">438</span></a> <span class="k">return</span> <span class="nb">bool</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">is_subquery</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">external_columns</span><span class="p">)</span> -</span><span id="L-439"><a href="#L-439"><span class="linenos">439</span></a> -</span><span id="L-440"><a href="#L-440"><span class="linenos">440</span></a> <span class="k">def</span> <span class="nf">rename_source</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">old_name</span><span class="p">,</span> <span class="n">new_name</span><span class="p">):</span> -</span><span id="L-441"><a href="#L-441"><span class="linenos">441</span></a><span class="w"> </span><span class="sd">"""Rename a source in this scope"""</span> -</span><span id="L-442"><a href="#L-442"><span class="linenos">442</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">old_name</span> <span class="ow">or</span> <span class="s2">""</span><span class="p">,</span> <span class="p">[])</span> -</span><span id="L-443"><a href="#L-443"><span class="linenos">443</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">new_name</span><span class="p">]</span> <span class="o">=</span> <span class="n">columns</span> -</span><span id="L-444"><a href="#L-444"><span class="linenos">444</span></a> -</span><span id="L-445"><a href="#L-445"><span class="linenos">445</span></a> <span class="k">def</span> <span class="nf">add_source</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">source</span><span class="p">):</span> -</span><span id="L-446"><a href="#L-446"><span class="linenos">446</span></a><span class="w"> </span><span class="sd">"""Add a source to this scope"""</span> -</span><span id="L-447"><a href="#L-447"><span class="linenos">447</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">source</span> -</span><span id="L-448"><a href="#L-448"><span class="linenos">448</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> -</span><span id="L-449"><a href="#L-449"><span class="linenos">449</span></a> -</span><span id="L-450"><a href="#L-450"><span class="linenos">450</span></a> <span class="k">def</span> <span class="nf">remove_source</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">):</span> -</span><span id="L-451"><a href="#L-451"><span class="linenos">451</span></a><span class="w"> </span><span class="sd">"""Remove a source from this scope"""</span> -</span><span id="L-452"><a href="#L-452"><span class="linenos">452</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> -</span><span id="L-453"><a href="#L-453"><span class="linenos">453</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> -</span><span id="L-454"><a href="#L-454"><span class="linenos">454</span></a> -</span><span id="L-455"><a href="#L-455"><span class="linenos">455</span></a> <span class="k">def</span> <span class="fm">__repr__</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> -</span><span id="L-456"><a href="#L-456"><span class="linenos">456</span></a> <span class="k">return</span> <span class="sa">f</span><span class="s2">"Scope<</span><span class="si">{</span><span class="bp">self</span><span class="o">.</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">>"</span> +</span><span id="L-438"><a href="#L-438"><span class="linenos">438</span></a> <span class="k">return</span> <span class="nb">bool</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 class="bp">self</span><span class="o">.</span><span class="n">is_subquery</span> <span class="ow">or</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">parent</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Lateral</span><span class="p">)))</span> +</span><span id="L-440"><a href="#L-440"><span class="linenos">440</span></a> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">external_columns</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="k">def</span> <span class="nf">rename_source</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">old_name</span><span class="p">,</span> <span class="n">new_name</span><span class="p">):</span> +</span><span id="L-444"><a href="#L-444"><span class="linenos">444</span></a><span class="w"> </span><span class="sd">"""Rename a source in this scope"""</span> +</span><span id="L-445"><a href="#L-445"><span class="linenos">445</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">old_name</span> <span class="ow">or</span> <span class="s2">""</span><span class="p">,</span> <span class="p">[])</span> +</span><span id="L-446"><a href="#L-446"><span class="linenos">446</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">new_name</span><span class="p">]</span> <span class="o">=</span> <span class="n">columns</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">def</span> <span class="nf">add_source</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">source</span><span class="p">):</span> +</span><span id="L-449"><a href="#L-449"><span class="linenos">449</span></a><span class="w"> </span><span class="sd">"""Add a source to this scope"""</span> +</span><span id="L-450"><a href="#L-450"><span class="linenos">450</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">source</span> +</span><span id="L-451"><a href="#L-451"><span class="linenos">451</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</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">remove_source</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">):</span> +</span><span id="L-454"><a href="#L-454"><span class="linenos">454</span></a><span class="w"> </span><span class="sd">"""Remove a source from this scope"""</span> +</span><span id="L-455"><a href="#L-455"><span class="linenos">455</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> +</span><span id="L-456"><a href="#L-456"><span class="linenos">456</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> </span><span id="L-457"><a href="#L-457"><span class="linenos">457</span></a> -</span><span id="L-458"><a href="#L-458"><span class="linenos">458</span></a> <span class="k">def</span> <span class="nf">traverse</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> -</span><span id="L-459"><a href="#L-459"><span class="linenos">459</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-460"><a href="#L-460"><span class="linenos">460</span></a><span class="sd"> Traverse the scope tree from this node.</span> -</span><span id="L-461"><a href="#L-461"><span class="linenos">461</span></a> -</span><span id="L-462"><a href="#L-462"><span class="linenos">462</span></a><span class="sd"> Yields:</span> -</span><span id="L-463"><a href="#L-463"><span class="linenos">463</span></a><span class="sd"> Scope: scope instances in depth-first-search post-order</span> -</span><span id="L-464"><a href="#L-464"><span class="linenos">464</span></a><span class="sd"> """</span> -</span><span id="L-465"><a href="#L-465"><span class="linenos">465</span></a> <span class="k">for</span> <span class="n">child_scope</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span> -</span><span id="L-466"><a href="#L-466"><span class="linenos">466</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">cte_scopes</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">union_scopes</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">table_scopes</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">subquery_scopes</span> -</span><span id="L-467"><a href="#L-467"><span class="linenos">467</span></a> <span class="p">):</span> -</span><span id="L-468"><a href="#L-468"><span class="linenos">468</span></a> <span class="k">yield from</span> <span class="n">child_scope</span><span class="o">.</span><span class="n">traverse</span><span class="p">()</span> -</span><span id="L-469"><a href="#L-469"><span class="linenos">469</span></a> <span class="k">yield</span> <span class="bp">self</span> -</span><span id="L-470"><a href="#L-470"><span class="linenos">470</span></a> -</span><span id="L-471"><a href="#L-471"><span class="linenos">471</span></a> <span class="k">def</span> <span class="nf">ref_count</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> -</span><span id="L-472"><a href="#L-472"><span class="linenos">472</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-473"><a href="#L-473"><span class="linenos">473</span></a><span class="sd"> Count the number of times each scope in this tree is referenced.</span> -</span><span id="L-474"><a href="#L-474"><span class="linenos">474</span></a> -</span><span id="L-475"><a href="#L-475"><span class="linenos">475</span></a><span class="sd"> Returns:</span> -</span><span id="L-476"><a href="#L-476"><span class="linenos">476</span></a><span class="sd"> dict[int, int]: Mapping of Scope instance ID to reference count</span> -</span><span id="L-477"><a href="#L-477"><span class="linenos">477</span></a><span class="sd"> """</span> -</span><span id="L-478"><a href="#L-478"><span class="linenos">478</span></a> <span class="n">scope_ref_count</span> <span class="o">=</span> <span class="n">defaultdict</span><span class="p">(</span><span class="k">lambda</span><span class="p">:</span> <span class="mi">0</span><span class="p">)</span> -</span><span id="L-479"><a href="#L-479"><span class="linenos">479</span></a> -</span><span id="L-480"><a href="#L-480"><span class="linenos">480</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">traverse</span><span class="p">():</span> -</span><span id="L-481"><a href="#L-481"><span class="linenos">481</span></a> <span class="k">for</span> <span class="n">_</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> -</span><span id="L-482"><a href="#L-482"><span class="linenos">482</span></a> <span class="n">scope_ref_count</span><span class="p">[</span><span class="nb">id</span><span class="p">(</span><span class="n">source</span><span class="p">)]</span> <span class="o">+=</span> <span class="mi">1</span> -</span><span id="L-483"><a href="#L-483"><span class="linenos">483</span></a> -</span><span id="L-484"><a href="#L-484"><span class="linenos">484</span></a> <span class="k">return</span> <span class="n">scope_ref_count</span> -</span><span id="L-485"><a href="#L-485"><span class="linenos">485</span></a> +</span><span id="L-458"><a href="#L-458"><span class="linenos">458</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><span id="L-459"><a href="#L-459"><span class="linenos">459</span></a> <span class="k">return</span> <span class="sa">f</span><span class="s2">"Scope<</span><span class="si">{</span><span class="bp">self</span><span class="o">.</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">>"</span> +</span><span id="L-460"><a href="#L-460"><span class="linenos">460</span></a> +</span><span id="L-461"><a href="#L-461"><span class="linenos">461</span></a> <span class="k">def</span> <span class="nf">traverse</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> +</span><span id="L-462"><a href="#L-462"><span class="linenos">462</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-463"><a href="#L-463"><span class="linenos">463</span></a><span class="sd"> Traverse the scope tree from this node.</span> +</span><span id="L-464"><a href="#L-464"><span class="linenos">464</span></a> +</span><span id="L-465"><a href="#L-465"><span class="linenos">465</span></a><span class="sd"> Yields:</span> +</span><span id="L-466"><a href="#L-466"><span class="linenos">466</span></a><span class="sd"> Scope: scope instances in depth-first-search post-order</span> +</span><span id="L-467"><a href="#L-467"><span class="linenos">467</span></a><span class="sd"> """</span> +</span><span id="L-468"><a href="#L-468"><span class="linenos">468</span></a> <span class="k">for</span> <span class="n">child_scope</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span> +</span><span id="L-469"><a href="#L-469"><span class="linenos">469</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">cte_scopes</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">union_scopes</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">table_scopes</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">subquery_scopes</span> +</span><span id="L-470"><a href="#L-470"><span class="linenos">470</span></a> <span class="p">):</span> +</span><span id="L-471"><a href="#L-471"><span class="linenos">471</span></a> <span class="k">yield from</span> <span class="n">child_scope</span><span class="o">.</span><span class="n">traverse</span><span class="p">()</span> +</span><span id="L-472"><a href="#L-472"><span class="linenos">472</span></a> <span class="k">yield</span> <span class="bp">self</span> +</span><span id="L-473"><a href="#L-473"><span class="linenos">473</span></a> +</span><span id="L-474"><a href="#L-474"><span class="linenos">474</span></a> <span class="k">def</span> <span class="nf">ref_count</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> +</span><span id="L-475"><a href="#L-475"><span class="linenos">475</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-476"><a href="#L-476"><span class="linenos">476</span></a><span class="sd"> Count the number of times each scope in this tree is referenced.</span> +</span><span id="L-477"><a href="#L-477"><span class="linenos">477</span></a> +</span><span id="L-478"><a href="#L-478"><span class="linenos">478</span></a><span class="sd"> Returns:</span> +</span><span id="L-479"><a href="#L-479"><span class="linenos">479</span></a><span class="sd"> dict[int, int]: Mapping of Scope instance ID to reference count</span> +</span><span id="L-480"><a href="#L-480"><span class="linenos">480</span></a><span class="sd"> """</span> +</span><span id="L-481"><a href="#L-481"><span class="linenos">481</span></a> <span class="n">scope_ref_count</span> <span class="o">=</span> <span class="n">defaultdict</span><span class="p">(</span><span class="k">lambda</span><span class="p">:</span> <span class="mi">0</span><span class="p">)</span> +</span><span id="L-482"><a href="#L-482"><span class="linenos">482</span></a> +</span><span id="L-483"><a href="#L-483"><span class="linenos">483</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">traverse</span><span class="p">():</span> +</span><span id="L-484"><a href="#L-484"><span class="linenos">484</span></a> <span class="k">for</span> <span class="n">_</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> +</span><span id="L-485"><a href="#L-485"><span class="linenos">485</span></a> <span class="n">scope_ref_count</span><span class="p">[</span><span class="nb">id</span><span class="p">(</span><span class="n">source</span><span class="p">)]</span> <span class="o">+=</span> <span class="mi">1</span> </span><span id="L-486"><a href="#L-486"><span class="linenos">486</span></a> -</span><span id="L-487"><a href="#L-487"><span class="linenos">487</span></a><span class="k">def</span> <span class="nf">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="n">Scope</span><span class="p">]:</span> -</span><span id="L-488"><a href="#L-488"><span class="linenos">488</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-489"><a href="#L-489"><span class="linenos">489</span></a><span class="sd"> Traverse an expression by it's "scopes".</span> -</span><span id="L-490"><a href="#L-490"><span class="linenos">490</span></a> -</span><span id="L-491"><a href="#L-491"><span class="linenos">491</span></a><span class="sd"> "Scope" represents the current context of a Select statement.</span> -</span><span id="L-492"><a href="#L-492"><span class="linenos">492</span></a> -</span><span id="L-493"><a href="#L-493"><span class="linenos">493</span></a><span class="sd"> This is helpful for optimizing queries, where we need more information than</span> -</span><span id="L-494"><a href="#L-494"><span class="linenos">494</span></a><span class="sd"> the expression tree itself. For example, we might care about the source</span> -</span><span id="L-495"><a href="#L-495"><span class="linenos">495</span></a><span class="sd"> names within a subquery. Returns a list because a generator could result in</span> -</span><span id="L-496"><a href="#L-496"><span class="linenos">496</span></a><span class="sd"> incomplete properties which is confusing.</span> -</span><span id="L-497"><a href="#L-497"><span class="linenos">497</span></a> -</span><span id="L-498"><a href="#L-498"><span class="linenos">498</span></a><span class="sd"> Examples:</span> -</span><span id="L-499"><a href="#L-499"><span class="linenos">499</span></a><span class="sd"> >>> import sqlglot</span> -</span><span id="L-500"><a href="#L-500"><span class="linenos">500</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT a FROM (SELECT a FROM x) AS y")</span> -</span><span id="L-501"><a href="#L-501"><span class="linenos">501</span></a><span class="sd"> >>> scopes = traverse_scope(expression)</span> -</span><span id="L-502"><a href="#L-502"><span class="linenos">502</span></a><span class="sd"> >>> scopes[0].expression.sql(), list(scopes[0].sources)</span> -</span><span id="L-503"><a href="#L-503"><span class="linenos">503</span></a><span class="sd"> ('SELECT a FROM x', ['x'])</span> -</span><span id="L-504"><a href="#L-504"><span class="linenos">504</span></a><span class="sd"> >>> scopes[1].expression.sql(), list(scopes[1].sources)</span> -</span><span id="L-505"><a href="#L-505"><span class="linenos">505</span></a><span class="sd"> ('SELECT a FROM (SELECT a FROM x) AS y', ['y'])</span> -</span><span id="L-506"><a href="#L-506"><span class="linenos">506</span></a> -</span><span id="L-507"><a href="#L-507"><span class="linenos">507</span></a><span class="sd"> Args:</span> -</span><span id="L-508"><a href="#L-508"><span class="linenos">508</span></a><span class="sd"> expression (exp.Expression): expression to traverse</span> -</span><span id="L-509"><a href="#L-509"><span class="linenos">509</span></a><span class="sd"> Returns:</span> -</span><span id="L-510"><a href="#L-510"><span class="linenos">510</span></a><span class="sd"> list[Scope]: scope instances</span> -</span><span id="L-511"><a href="#L-511"><span class="linenos">511</span></a><span class="sd"> """</span> -</span><span id="L-512"><a href="#L-512"><span class="linenos">512</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Unionable</span><span class="p">):</span> -</span><span id="L-513"><a href="#L-513"><span class="linenos">513</span></a> <span class="k">return</span> <span class="p">[]</span> -</span><span id="L-514"><a href="#L-514"><span class="linenos">514</span></a> <span class="k">return</span> <span class="nb">list</span><span class="p">(</span><span class="n">_traverse_scope</span><span class="p">(</span><span class="n">Scope</span><span class="p">(</span><span class="n">expression</span><span class="p">)))</span> -</span><span id="L-515"><a href="#L-515"><span class="linenos">515</span></a> -</span><span id="L-516"><a href="#L-516"><span class="linenos">516</span></a> -</span><span id="L-517"><a href="#L-517"><span class="linenos">517</span></a><span class="k">def</span> <span class="nf">build_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">Scope</span><span class="p">]:</span> -</span><span id="L-518"><a href="#L-518"><span class="linenos">518</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-519"><a href="#L-519"><span class="linenos">519</span></a><span class="sd"> Build a scope tree.</span> -</span><span id="L-520"><a href="#L-520"><span class="linenos">520</span></a> -</span><span id="L-521"><a href="#L-521"><span class="linenos">521</span></a><span class="sd"> Args:</span> -</span><span id="L-522"><a href="#L-522"><span class="linenos">522</span></a><span class="sd"> expression (exp.Expression): expression to build the scope tree for</span> -</span><span id="L-523"><a href="#L-523"><span class="linenos">523</span></a><span class="sd"> Returns:</span> -</span><span id="L-524"><a href="#L-524"><span class="linenos">524</span></a><span class="sd"> Scope: root scope</span> -</span><span id="L-525"><a href="#L-525"><span class="linenos">525</span></a><span class="sd"> """</span> -</span><span id="L-526"><a href="#L-526"><span class="linenos">526</span></a> <span class="n">scopes</span> <span class="o">=</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-527"><a href="#L-527"><span class="linenos">527</span></a> <span class="k">if</span> <span class="n">scopes</span><span class="p">:</span> -</span><span id="L-528"><a href="#L-528"><span class="linenos">528</span></a> <span class="k">return</span> <span class="n">scopes</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span> -</span><span id="L-529"><a href="#L-529"><span class="linenos">529</span></a> <span class="k">return</span> <span class="kc">None</span> -</span><span id="L-530"><a href="#L-530"><span class="linenos">530</span></a> -</span><span id="L-531"><a href="#L-531"><span class="linenos">531</span></a> -</span><span id="L-532"><a href="#L-532"><span class="linenos">532</span></a><span class="k">def</span> <span class="nf">_traverse_scope</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> -</span><span id="L-533"><a href="#L-533"><span class="linenos">533</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> -</span><span id="L-534"><a href="#L-534"><span class="linenos">534</span></a> <span class="k">yield from</span> <span class="n">_traverse_select</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> -</span><span id="L-535"><a href="#L-535"><span class="linenos">535</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Union</span><span class="p">):</span> -</span><span id="L-536"><a href="#L-536"><span class="linenos">536</span></a> <span class="k">yield from</span> <span class="n">_traverse_union</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> -</span><span id="L-537"><a href="#L-537"><span class="linenos">537</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">):</span> -</span><span id="L-538"><a href="#L-538"><span class="linenos">538</span></a> <span class="k">yield from</span> <span class="n">_traverse_subqueries</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> -</span><span id="L-539"><a href="#L-539"><span class="linenos">539</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> -</span><span id="L-540"><a href="#L-540"><span class="linenos">540</span></a> <span class="k">yield from</span> <span class="n">_traverse_tables</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> -</span><span id="L-541"><a href="#L-541"><span class="linenos">541</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">):</span> -</span><span id="L-542"><a href="#L-542"><span class="linenos">542</span></a> <span class="k">pass</span> -</span><span id="L-543"><a href="#L-543"><span class="linenos">543</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-544"><a href="#L-544"><span class="linenos">544</span></a> <span class="n">logger</span><span class="o">.</span><span class="n">warning</span><span class="p">(</span> -</span><span id="L-545"><a href="#L-545"><span class="linenos">545</span></a> <span class="s2">"Cannot traverse scope </span><span class="si">%s</span><span class="s2"> with type '</span><span class="si">%s</span><span class="s2">'"</span><span class="p">,</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="nb">type</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-546"><a href="#L-546"><span class="linenos">546</span></a> <span class="p">)</span> -</span><span id="L-547"><a href="#L-547"><span class="linenos">547</span></a> <span class="k">return</span> -</span><span id="L-548"><a href="#L-548"><span class="linenos">548</span></a> -</span><span id="L-549"><a href="#L-549"><span class="linenos">549</span></a> <span class="k">yield</span> <span class="n">scope</span> -</span><span id="L-550"><a href="#L-550"><span class="linenos">550</span></a> -</span><span id="L-551"><a href="#L-551"><span class="linenos">551</span></a> -</span><span id="L-552"><a href="#L-552"><span class="linenos">552</span></a><span class="k">def</span> <span class="nf">_traverse_select</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> -</span><span id="L-553"><a href="#L-553"><span class="linenos">553</span></a> <span class="k">yield from</span> <span class="n">_traverse_ctes</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> -</span><span id="L-554"><a href="#L-554"><span class="linenos">554</span></a> <span class="k">yield from</span> <span class="n">_traverse_tables</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> -</span><span id="L-555"><a href="#L-555"><span class="linenos">555</span></a> <span class="k">yield from</span> <span class="n">_traverse_subqueries</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> +</span><span id="L-487"><a href="#L-487"><span class="linenos">487</span></a> <span class="k">return</span> <span class="n">scope_ref_count</span> +</span><span id="L-488"><a href="#L-488"><span class="linenos">488</span></a> +</span><span id="L-489"><a href="#L-489"><span class="linenos">489</span></a> +</span><span id="L-490"><a href="#L-490"><span class="linenos">490</span></a><span class="k">def</span> <span class="nf">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="n">Scope</span><span class="p">]:</span> +</span><span id="L-491"><a href="#L-491"><span class="linenos">491</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-492"><a href="#L-492"><span class="linenos">492</span></a><span class="sd"> Traverse an expression by its "scopes".</span> +</span><span id="L-493"><a href="#L-493"><span class="linenos">493</span></a> +</span><span id="L-494"><a href="#L-494"><span class="linenos">494</span></a><span class="sd"> "Scope" represents the current context of a Select statement.</span> +</span><span id="L-495"><a href="#L-495"><span class="linenos">495</span></a> +</span><span id="L-496"><a href="#L-496"><span class="linenos">496</span></a><span class="sd"> This is helpful for optimizing queries, where we need more information than</span> +</span><span id="L-497"><a href="#L-497"><span class="linenos">497</span></a><span class="sd"> the expression tree itself. For example, we might care about the source</span> +</span><span id="L-498"><a href="#L-498"><span class="linenos">498</span></a><span class="sd"> names within a subquery. Returns a list because a generator could result in</span> +</span><span id="L-499"><a href="#L-499"><span class="linenos">499</span></a><span class="sd"> incomplete properties which is confusing.</span> +</span><span id="L-500"><a href="#L-500"><span class="linenos">500</span></a> +</span><span id="L-501"><a href="#L-501"><span class="linenos">501</span></a><span class="sd"> Examples:</span> +</span><span id="L-502"><a href="#L-502"><span class="linenos">502</span></a><span class="sd"> >>> import sqlglot</span> +</span><span id="L-503"><a href="#L-503"><span class="linenos">503</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT a FROM (SELECT a FROM x) AS y")</span> +</span><span id="L-504"><a href="#L-504"><span class="linenos">504</span></a><span class="sd"> >>> scopes = traverse_scope(expression)</span> +</span><span id="L-505"><a href="#L-505"><span class="linenos">505</span></a><span class="sd"> >>> scopes[0].expression.sql(), list(scopes[0].sources)</span> +</span><span id="L-506"><a href="#L-506"><span class="linenos">506</span></a><span class="sd"> ('SELECT a FROM x', ['x'])</span> +</span><span id="L-507"><a href="#L-507"><span class="linenos">507</span></a><span class="sd"> >>> scopes[1].expression.sql(), list(scopes[1].sources)</span> +</span><span id="L-508"><a href="#L-508"><span class="linenos">508</span></a><span class="sd"> ('SELECT a FROM (SELECT a FROM x) AS y', ['y'])</span> +</span><span id="L-509"><a href="#L-509"><span class="linenos">509</span></a> +</span><span id="L-510"><a href="#L-510"><span class="linenos">510</span></a><span class="sd"> Args:</span> +</span><span id="L-511"><a href="#L-511"><span class="linenos">511</span></a><span class="sd"> expression (exp.Expression): expression to traverse</span> +</span><span id="L-512"><a href="#L-512"><span class="linenos">512</span></a><span class="sd"> Returns:</span> +</span><span id="L-513"><a href="#L-513"><span class="linenos">513</span></a><span class="sd"> list[Scope]: scope instances</span> +</span><span id="L-514"><a href="#L-514"><span class="linenos">514</span></a><span class="sd"> """</span> +</span><span id="L-515"><a href="#L-515"><span class="linenos">515</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">Unionable</span><span class="p">)</span> <span class="ow">or</span> <span class="p">(</span> +</span><span id="L-516"><a href="#L-516"><span class="linenos">516</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DDL</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">)</span> +</span><span id="L-517"><a href="#L-517"><span class="linenos">517</span></a> <span class="p">):</span> +</span><span id="L-518"><a href="#L-518"><span class="linenos">518</span></a> <span class="k">return</span> <span class="nb">list</span><span class="p">(</span><span class="n">_traverse_scope</span><span class="p">(</span><span class="n">Scope</span><span class="p">(</span><span class="n">expression</span><span class="p">)))</span> +</span><span id="L-519"><a href="#L-519"><span class="linenos">519</span></a> +</span><span id="L-520"><a href="#L-520"><span class="linenos">520</span></a> <span class="k">return</span> <span class="p">[]</span> +</span><span id="L-521"><a href="#L-521"><span class="linenos">521</span></a> +</span><span id="L-522"><a href="#L-522"><span class="linenos">522</span></a> +</span><span id="L-523"><a href="#L-523"><span class="linenos">523</span></a><span class="k">def</span> <span class="nf">build_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">Scope</span><span class="p">]:</span> +</span><span id="L-524"><a href="#L-524"><span class="linenos">524</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-525"><a href="#L-525"><span class="linenos">525</span></a><span class="sd"> Build a scope tree.</span> +</span><span id="L-526"><a href="#L-526"><span class="linenos">526</span></a> +</span><span id="L-527"><a href="#L-527"><span class="linenos">527</span></a><span class="sd"> Args:</span> +</span><span id="L-528"><a href="#L-528"><span class="linenos">528</span></a><span class="sd"> expression (exp.Expression): expression to build the scope tree for</span> +</span><span id="L-529"><a href="#L-529"><span class="linenos">529</span></a><span class="sd"> Returns:</span> +</span><span id="L-530"><a href="#L-530"><span class="linenos">530</span></a><span class="sd"> Scope: root scope</span> +</span><span id="L-531"><a href="#L-531"><span class="linenos">531</span></a><span class="sd"> """</span> +</span><span id="L-532"><a href="#L-532"><span class="linenos">532</span></a> <span class="n">scopes</span> <span class="o">=</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="L-533"><a href="#L-533"><span class="linenos">533</span></a> <span class="k">if</span> <span class="n">scopes</span><span class="p">:</span> +</span><span id="L-534"><a href="#L-534"><span class="linenos">534</span></a> <span class="k">return</span> <span class="n">scopes</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span> +</span><span id="L-535"><a href="#L-535"><span class="linenos">535</span></a> <span class="k">return</span> <span class="kc">None</span> +</span><span id="L-536"><a href="#L-536"><span class="linenos">536</span></a> +</span><span id="L-537"><a href="#L-537"><span class="linenos">537</span></a> +</span><span id="L-538"><a href="#L-538"><span class="linenos">538</span></a><span class="k">def</span> <span class="nf">_traverse_scope</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> +</span><span id="L-539"><a href="#L-539"><span class="linenos">539</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Select</span><span class="p">):</span> +</span><span id="L-540"><a href="#L-540"><span class="linenos">540</span></a> <span class="k">yield from</span> <span class="n">_traverse_select</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> +</span><span id="L-541"><a href="#L-541"><span class="linenos">541</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Union</span><span class="p">):</span> +</span><span id="L-542"><a href="#L-542"><span class="linenos">542</span></a> <span class="k">yield from</span> <span class="n">_traverse_union</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> +</span><span id="L-543"><a href="#L-543"><span class="linenos">543</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">):</span> +</span><span id="L-544"><a href="#L-544"><span class="linenos">544</span></a> <span class="k">yield from</span> <span class="n">_traverse_subqueries</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> +</span><span id="L-545"><a href="#L-545"><span class="linenos">545</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> +</span><span id="L-546"><a href="#L-546"><span class="linenos">546</span></a> <span class="k">yield from</span> <span class="n">_traverse_tables</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> +</span><span id="L-547"><a href="#L-547"><span class="linenos">547</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">):</span> +</span><span id="L-548"><a href="#L-548"><span class="linenos">548</span></a> <span class="k">yield from</span> <span class="n">_traverse_udtfs</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> +</span><span id="L-549"><a href="#L-549"><span class="linenos">549</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DDL</span><span class="p">):</span> +</span><span id="L-550"><a href="#L-550"><span class="linenos">550</span></a> <span class="k">yield from</span> <span class="n">_traverse_ddl</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> +</span><span id="L-551"><a href="#L-551"><span class="linenos">551</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-552"><a href="#L-552"><span class="linenos">552</span></a> <span class="n">logger</span><span class="o">.</span><span class="n">warning</span><span class="p">(</span> +</span><span id="L-553"><a href="#L-553"><span class="linenos">553</span></a> <span class="s2">"Cannot traverse scope </span><span class="si">%s</span><span class="s2"> with type '</span><span class="si">%s</span><span class="s2">'"</span><span class="p">,</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="nb">type</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">)</span> +</span><span id="L-554"><a href="#L-554"><span class="linenos">554</span></a> <span class="p">)</span> +</span><span id="L-555"><a href="#L-555"><span class="linenos">555</span></a> <span class="k">return</span> </span><span id="L-556"><a href="#L-556"><span class="linenos">556</span></a> -</span><span id="L-557"><a href="#L-557"><span class="linenos">557</span></a> -</span><span id="L-558"><a href="#L-558"><span class="linenos">558</span></a><span class="k">def</span> <span class="nf">_traverse_union</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> -</span><span id="L-559"><a href="#L-559"><span class="linenos">559</span></a> <span class="k">yield from</span> <span class="n">_traverse_ctes</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> -</span><span id="L-560"><a href="#L-560"><span class="linenos">560</span></a> -</span><span id="L-561"><a href="#L-561"><span class="linenos">561</span></a> <span class="c1"># The last scope to be yield should be the top most scope</span> -</span><span id="L-562"><a href="#L-562"><span class="linenos">562</span></a> <span class="n">left</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-563"><a href="#L-563"><span class="linenos">563</span></a> <span class="k">for</span> <span class="n">left</span> <span class="ow">in</span> <span class="n">_traverse_scope</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">branch</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">left</span><span class="p">,</span> <span class="n">scope_type</span><span class="o">=</span><span class="n">ScopeType</span><span class="o">.</span><span class="n">UNION</span><span class="p">)):</span> -</span><span id="L-564"><a href="#L-564"><span class="linenos">564</span></a> <span class="k">yield</span> <span class="n">left</span> +</span><span id="L-557"><a href="#L-557"><span class="linenos">557</span></a> <span class="k">yield</span> <span class="n">scope</span> +</span><span id="L-558"><a href="#L-558"><span class="linenos">558</span></a> +</span><span id="L-559"><a href="#L-559"><span class="linenos">559</span></a> +</span><span id="L-560"><a href="#L-560"><span class="linenos">560</span></a><span class="k">def</span> <span class="nf">_traverse_select</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> +</span><span id="L-561"><a href="#L-561"><span class="linenos">561</span></a> <span class="k">yield from</span> <span class="n">_traverse_ctes</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> +</span><span id="L-562"><a href="#L-562"><span class="linenos">562</span></a> <span class="k">yield from</span> <span class="n">_traverse_tables</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> +</span><span id="L-563"><a href="#L-563"><span class="linenos">563</span></a> <span class="k">yield from</span> <span class="n">_traverse_subqueries</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> +</span><span id="L-564"><a href="#L-564"><span class="linenos">564</span></a> </span><span id="L-565"><a href="#L-565"><span class="linenos">565</span></a> -</span><span id="L-566"><a href="#L-566"><span class="linenos">566</span></a> <span class="n">right</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-567"><a href="#L-567"><span class="linenos">567</span></a> <span class="k">for</span> <span class="n">right</span> <span class="ow">in</span> <span class="n">_traverse_scope</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">branch</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">right</span><span class="p">,</span> <span class="n">scope_type</span><span class="o">=</span><span class="n">ScopeType</span><span class="o">.</span><span class="n">UNION</span><span class="p">)):</span> -</span><span id="L-568"><a href="#L-568"><span class="linenos">568</span></a> <span class="k">yield</span> <span class="n">right</span> -</span><span id="L-569"><a href="#L-569"><span class="linenos">569</span></a> -</span><span id="L-570"><a href="#L-570"><span class="linenos">570</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">union_scopes</span> <span class="o">=</span> <span class="p">[</span><span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">]</span> -</span><span id="L-571"><a href="#L-571"><span class="linenos">571</span></a> -</span><span id="L-572"><a href="#L-572"><span class="linenos">572</span></a> -</span><span id="L-573"><a href="#L-573"><span class="linenos">573</span></a><span class="k">def</span> <span class="nf">_traverse_ctes</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> -</span><span id="L-574"><a href="#L-574"><span class="linenos">574</span></a> <span class="n">sources</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="L-575"><a href="#L-575"><span class="linenos">575</span></a> -</span><span id="L-576"><a href="#L-576"><span class="linenos">576</span></a> <span class="k">for</span> <span class="n">cte</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">ctes</span><span class="p">:</span> -</span><span id="L-577"><a href="#L-577"><span class="linenos">577</span></a> <span class="n">recursive_scope</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-578"><a href="#L-578"><span class="linenos">578</span></a> -</span><span id="L-579"><a href="#L-579"><span class="linenos">579</span></a> <span class="c1"># if the scope is a recursive cte, it must be in the form of</span> -</span><span id="L-580"><a href="#L-580"><span class="linenos">580</span></a> <span class="c1"># base_case UNION recursive. thus the recursive scope is the first</span> -</span><span id="L-581"><a href="#L-581"><span class="linenos">581</span></a> <span class="c1"># section of the union.</span> -</span><span id="L-582"><a href="#L-582"><span class="linenos">582</span></a> <span class="k">if</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="s2">"with"</span><span class="p">]</span><span class="o">.</span><span class="n">recursive</span><span class="p">:</span> -</span><span id="L-583"><a href="#L-583"><span class="linenos">583</span></a> <span class="n">union</span> <span class="o">=</span> <span class="n">cte</span><span class="o">.</span><span class="n">this</span> -</span><span id="L-584"><a href="#L-584"><span class="linenos">584</span></a> -</span><span id="L-585"><a href="#L-585"><span class="linenos">585</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">union</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-586"><a href="#L-586"><span class="linenos">586</span></a> <span class="n">recursive_scope</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">branch</span><span class="p">(</span><span class="n">union</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">scope_type</span><span class="o">=</span><span class="n">ScopeType</span><span class="o">.</span><span class="n">CTE</span><span class="p">)</span> -</span><span id="L-587"><a href="#L-587"><span class="linenos">587</span></a> -</span><span id="L-588"><a href="#L-588"><span class="linenos">588</span></a> <span class="n">child_scope</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-589"><a href="#L-589"><span class="linenos">589</span></a> -</span><span id="L-590"><a href="#L-590"><span class="linenos">590</span></a> <span class="k">for</span> <span class="n">child_scope</span> <span class="ow">in</span> <span class="n">_traverse_scope</span><span class="p">(</span> -</span><span id="L-591"><a href="#L-591"><span class="linenos">591</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">branch</span><span class="p">(</span> -</span><span id="L-592"><a href="#L-592"><span class="linenos">592</span></a> <span class="n">cte</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> -</span><span id="L-593"><a href="#L-593"><span class="linenos">593</span></a> <span class="n">chain_sources</span><span class="o">=</span><span class="n">sources</span><span class="p">,</span> -</span><span id="L-594"><a href="#L-594"><span class="linenos">594</span></a> <span class="n">outer_column_list</span><span class="o">=</span><span class="n">cte</span><span class="o">.</span><span class="n">alias_column_names</span><span class="p">,</span> -</span><span id="L-595"><a href="#L-595"><span class="linenos">595</span></a> <span class="n">scope_type</span><span class="o">=</span><span class="n">ScopeType</span><span class="o">.</span><span class="n">CTE</span><span class="p">,</span> -</span><span id="L-596"><a href="#L-596"><span class="linenos">596</span></a> <span class="p">)</span> -</span><span id="L-597"><a href="#L-597"><span class="linenos">597</span></a> <span class="p">):</span> -</span><span id="L-598"><a href="#L-598"><span class="linenos">598</span></a> <span class="k">yield</span> <span class="n">child_scope</span> -</span><span id="L-599"><a href="#L-599"><span class="linenos">599</span></a> -</span><span id="L-600"><a href="#L-600"><span class="linenos">600</span></a> <span class="n">alias</span> <span class="o">=</span> <span class="n">cte</span><span class="o">.</span><span class="n">alias</span> -</span><span id="L-601"><a href="#L-601"><span class="linenos">601</span></a> <span class="n">sources</span><span class="p">[</span><span class="n">alias</span><span class="p">]</span> <span class="o">=</span> <span class="n">child_scope</span> -</span><span id="L-602"><a href="#L-602"><span class="linenos">602</span></a> -</span><span id="L-603"><a href="#L-603"><span class="linenos">603</span></a> <span class="k">if</span> <span class="n">recursive_scope</span><span class="p">:</span> -</span><span id="L-604"><a href="#L-604"><span class="linenos">604</span></a> <span class="n">child_scope</span><span class="o">.</span><span class="n">add_source</span><span class="p">(</span><span class="n">alias</span><span class="p">,</span> <span class="n">recursive_scope</span><span class="p">)</span> -</span><span id="L-605"><a href="#L-605"><span class="linenos">605</span></a> -</span><span id="L-606"><a href="#L-606"><span class="linenos">606</span></a> <span class="c1"># append the final child_scope yielded</span> -</span><span id="L-607"><a href="#L-607"><span class="linenos">607</span></a> <span class="k">if</span> <span class="n">child_scope</span><span class="p">:</span> -</span><span id="L-608"><a href="#L-608"><span class="linenos">608</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">cte_scopes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">child_scope</span><span class="p">)</span> -</span><span id="L-609"><a href="#L-609"><span class="linenos">609</span></a> -</span><span id="L-610"><a href="#L-610"><span class="linenos">610</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">sources</span><span class="p">)</span> -</span><span id="L-611"><a href="#L-611"><span class="linenos">611</span></a> -</span><span id="L-612"><a href="#L-612"><span class="linenos">612</span></a> -</span><span id="L-613"><a href="#L-613"><span class="linenos">613</span></a><span class="k">def</span> <span class="nf">_is_derived_table</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 class="o">-></span> <span class="nb">bool</span><span class="p">:</span> -</span><span id="L-614"><a href="#L-614"><span class="linenos">614</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-615"><a href="#L-615"><span class="linenos">615</span></a><span class="sd"> We represent (tbl1 JOIN tbl2) as a Subquery, but it's not really a "derived table",</span> -</span><span id="L-616"><a href="#L-616"><span class="linenos">616</span></a><span class="sd"> as it doesn't introduce a new scope. If an alias is present, it shadows all names</span> -</span><span id="L-617"><a href="#L-617"><span class="linenos">617</span></a><span class="sd"> under the Subquery, so that's one exception to this rule.</span> -</span><span id="L-618"><a href="#L-618"><span class="linenos">618</span></a><span class="sd"> """</span> -</span><span id="L-619"><a href="#L-619"><span class="linenos">619</span></a> <span class="k">return</span> <span class="nb">bool</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">alias</span> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">))</span> +</span><span id="L-566"><a href="#L-566"><span class="linenos">566</span></a><span class="k">def</span> <span class="nf">_traverse_union</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> +</span><span id="L-567"><a href="#L-567"><span class="linenos">567</span></a> <span class="k">yield from</span> <span class="n">_traverse_ctes</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> +</span><span id="L-568"><a href="#L-568"><span class="linenos">568</span></a> +</span><span id="L-569"><a href="#L-569"><span class="linenos">569</span></a> <span class="c1"># The last scope to be yield should be the top most scope</span> +</span><span id="L-570"><a href="#L-570"><span class="linenos">570</span></a> <span class="n">left</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-571"><a href="#L-571"><span class="linenos">571</span></a> <span class="k">for</span> <span class="n">left</span> <span class="ow">in</span> <span class="n">_traverse_scope</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">branch</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">left</span><span class="p">,</span> <span class="n">scope_type</span><span class="o">=</span><span class="n">ScopeType</span><span class="o">.</span><span class="n">UNION</span><span class="p">)):</span> +</span><span id="L-572"><a href="#L-572"><span class="linenos">572</span></a> <span class="k">yield</span> <span class="n">left</span> +</span><span id="L-573"><a href="#L-573"><span class="linenos">573</span></a> +</span><span id="L-574"><a href="#L-574"><span class="linenos">574</span></a> <span class="n">right</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-575"><a href="#L-575"><span class="linenos">575</span></a> <span class="k">for</span> <span class="n">right</span> <span class="ow">in</span> <span class="n">_traverse_scope</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">branch</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">right</span><span class="p">,</span> <span class="n">scope_type</span><span class="o">=</span><span class="n">ScopeType</span><span class="o">.</span><span class="n">UNION</span><span class="p">)):</span> +</span><span id="L-576"><a href="#L-576"><span class="linenos">576</span></a> <span class="k">yield</span> <span class="n">right</span> +</span><span id="L-577"><a href="#L-577"><span class="linenos">577</span></a> +</span><span id="L-578"><a href="#L-578"><span class="linenos">578</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">union_scopes</span> <span class="o">=</span> <span class="p">[</span><span class="n">left</span><span class="p">,</span> <span class="n">right</span><span class="p">]</span> +</span><span id="L-579"><a href="#L-579"><span class="linenos">579</span></a> +</span><span id="L-580"><a href="#L-580"><span class="linenos">580</span></a> +</span><span id="L-581"><a href="#L-581"><span class="linenos">581</span></a><span class="k">def</span> <span class="nf">_traverse_ctes</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> +</span><span id="L-582"><a href="#L-582"><span class="linenos">582</span></a> <span class="n">sources</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="L-583"><a href="#L-583"><span class="linenos">583</span></a> +</span><span id="L-584"><a href="#L-584"><span class="linenos">584</span></a> <span class="k">for</span> <span class="n">cte</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">ctes</span><span class="p">:</span> +</span><span id="L-585"><a href="#L-585"><span class="linenos">585</span></a> <span class="n">recursive_scope</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-586"><a href="#L-586"><span class="linenos">586</span></a> +</span><span id="L-587"><a href="#L-587"><span class="linenos">587</span></a> <span class="c1"># if the scope is a recursive cte, it must be in the form of base_case UNION recursive.</span> +</span><span id="L-588"><a href="#L-588"><span class="linenos">588</span></a> <span class="c1"># thus the recursive scope is the first section of the union.</span> +</span><span id="L-589"><a href="#L-589"><span class="linenos">589</span></a> <span class="n">with_</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"with"</span><span class="p">)</span> +</span><span id="L-590"><a href="#L-590"><span class="linenos">590</span></a> <span class="k">if</span> <span class="n">with_</span> <span class="ow">and</span> <span class="n">with_</span><span class="o">.</span><span class="n">recursive</span><span class="p">:</span> +</span><span id="L-591"><a href="#L-591"><span class="linenos">591</span></a> <span class="n">union</span> <span class="o">=</span> <span class="n">cte</span><span class="o">.</span><span class="n">this</span> +</span><span id="L-592"><a href="#L-592"><span class="linenos">592</span></a> +</span><span id="L-593"><a href="#L-593"><span class="linenos">593</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">union</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-594"><a href="#L-594"><span class="linenos">594</span></a> <span class="n">recursive_scope</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">branch</span><span class="p">(</span><span class="n">union</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">scope_type</span><span class="o">=</span><span class="n">ScopeType</span><span class="o">.</span><span class="n">CTE</span><span class="p">)</span> +</span><span id="L-595"><a href="#L-595"><span class="linenos">595</span></a> +</span><span id="L-596"><a href="#L-596"><span class="linenos">596</span></a> <span class="n">child_scope</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-597"><a href="#L-597"><span class="linenos">597</span></a> +</span><span id="L-598"><a href="#L-598"><span class="linenos">598</span></a> <span class="k">for</span> <span class="n">child_scope</span> <span class="ow">in</span> <span class="n">_traverse_scope</span><span class="p">(</span> +</span><span id="L-599"><a href="#L-599"><span class="linenos">599</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">branch</span><span class="p">(</span> +</span><span id="L-600"><a href="#L-600"><span class="linenos">600</span></a> <span class="n">cte</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> +</span><span id="L-601"><a href="#L-601"><span class="linenos">601</span></a> <span class="n">chain_sources</span><span class="o">=</span><span class="n">sources</span><span class="p">,</span> +</span><span id="L-602"><a href="#L-602"><span class="linenos">602</span></a> <span class="n">outer_column_list</span><span class="o">=</span><span class="n">cte</span><span class="o">.</span><span class="n">alias_column_names</span><span class="p">,</span> +</span><span id="L-603"><a href="#L-603"><span class="linenos">603</span></a> <span class="n">scope_type</span><span class="o">=</span><span class="n">ScopeType</span><span class="o">.</span><span class="n">CTE</span><span class="p">,</span> +</span><span id="L-604"><a href="#L-604"><span class="linenos">604</span></a> <span class="p">)</span> +</span><span id="L-605"><a href="#L-605"><span class="linenos">605</span></a> <span class="p">):</span> +</span><span id="L-606"><a href="#L-606"><span class="linenos">606</span></a> <span class="k">yield</span> <span class="n">child_scope</span> +</span><span id="L-607"><a href="#L-607"><span class="linenos">607</span></a> +</span><span id="L-608"><a href="#L-608"><span class="linenos">608</span></a> <span class="n">alias</span> <span class="o">=</span> <span class="n">cte</span><span class="o">.</span><span class="n">alias</span> +</span><span id="L-609"><a href="#L-609"><span class="linenos">609</span></a> <span class="n">sources</span><span class="p">[</span><span class="n">alias</span><span class="p">]</span> <span class="o">=</span> <span class="n">child_scope</span> +</span><span id="L-610"><a href="#L-610"><span class="linenos">610</span></a> +</span><span id="L-611"><a href="#L-611"><span class="linenos">611</span></a> <span class="k">if</span> <span class="n">recursive_scope</span><span class="p">:</span> +</span><span id="L-612"><a href="#L-612"><span class="linenos">612</span></a> <span class="n">child_scope</span><span class="o">.</span><span class="n">add_source</span><span class="p">(</span><span class="n">alias</span><span class="p">,</span> <span class="n">recursive_scope</span><span class="p">)</span> +</span><span id="L-613"><a href="#L-613"><span class="linenos">613</span></a> +</span><span id="L-614"><a href="#L-614"><span class="linenos">614</span></a> <span class="c1"># append the final child_scope yielded</span> +</span><span id="L-615"><a href="#L-615"><span class="linenos">615</span></a> <span class="k">if</span> <span class="n">child_scope</span><span class="p">:</span> +</span><span id="L-616"><a href="#L-616"><span class="linenos">616</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">cte_scopes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">child_scope</span><span class="p">)</span> +</span><span id="L-617"><a href="#L-617"><span class="linenos">617</span></a> +</span><span id="L-618"><a href="#L-618"><span class="linenos">618</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">sources</span><span class="p">)</span> +</span><span id="L-619"><a href="#L-619"><span class="linenos">619</span></a> </span><span id="L-620"><a href="#L-620"><span class="linenos">620</span></a> -</span><span id="L-621"><a href="#L-621"><span class="linenos">621</span></a> -</span><span id="L-622"><a href="#L-622"><span class="linenos">622</span></a><span class="k">def</span> <span class="nf">_traverse_tables</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> -</span><span id="L-623"><a href="#L-623"><span class="linenos">623</span></a> <span class="n">sources</span> <span class="o">=</span> <span class="p">{}</span> -</span><span id="L-624"><a href="#L-624"><span class="linenos">624</span></a> -</span><span id="L-625"><a href="#L-625"><span class="linenos">625</span></a> <span class="c1"># Traverse FROMs, JOINs, and LATERALs in the order they are defined</span> -</span><span id="L-626"><a href="#L-626"><span class="linenos">626</span></a> <span class="n">expressions</span> <span class="o">=</span> <span class="p">[]</span> -</span><span id="L-627"><a href="#L-627"><span class="linenos">627</span></a> <span class="n">from_</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"from"</span><span class="p">)</span> -</span><span id="L-628"><a href="#L-628"><span class="linenos">628</span></a> <span class="k">if</span> <span class="n">from_</span><span class="p">:</span> -</span><span id="L-629"><a href="#L-629"><span class="linenos">629</span></a> <span class="n">expressions</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">from_</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> -</span><span id="L-630"><a href="#L-630"><span class="linenos">630</span></a> -</span><span id="L-631"><a href="#L-631"><span class="linenos">631</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">)</span> <span class="ow">or</span> <span class="p">[]:</span> -</span><span id="L-632"><a href="#L-632"><span class="linenos">632</span></a> <span class="n">expressions</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> -</span><span id="L-633"><a href="#L-633"><span class="linenos">633</span></a> -</span><span id="L-634"><a href="#L-634"><span class="linenos">634</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> -</span><span id="L-635"><a href="#L-635"><span class="linenos">635</span></a> <span class="n">expressions</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">)</span> -</span><span id="L-636"><a href="#L-636"><span class="linenos">636</span></a> -</span><span id="L-637"><a href="#L-637"><span class="linenos">637</span></a> <span class="n">expressions</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">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">"laterals"</span><span class="p">)</span> <span class="ow">or</span> <span class="p">[])</span> +</span><span id="L-621"><a href="#L-621"><span class="linenos">621</span></a><span class="k">def</span> <span class="nf">_is_derived_table</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 class="o">-></span> <span class="nb">bool</span><span class="p">:</span> +</span><span id="L-622"><a href="#L-622"><span class="linenos">622</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-623"><a href="#L-623"><span class="linenos">623</span></a><span class="sd"> We represent (tbl1 JOIN tbl2) as a Subquery, but it's not really a "derived table",</span> +</span><span id="L-624"><a href="#L-624"><span class="linenos">624</span></a><span class="sd"> as it doesn't introduce a new scope. If an alias is present, it shadows all names</span> +</span><span id="L-625"><a href="#L-625"><span class="linenos">625</span></a><span class="sd"> under the Subquery, so that's one exception to this rule.</span> +</span><span id="L-626"><a href="#L-626"><span class="linenos">626</span></a><span class="sd"> """</span> +</span><span id="L-627"><a href="#L-627"><span class="linenos">627</span></a> <span class="k">return</span> <span class="nb">bool</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">alias</span> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">))</span> +</span><span id="L-628"><a href="#L-628"><span class="linenos">628</span></a> +</span><span id="L-629"><a href="#L-629"><span class="linenos">629</span></a> +</span><span id="L-630"><a href="#L-630"><span class="linenos">630</span></a><span class="k">def</span> <span class="nf">_traverse_tables</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> +</span><span id="L-631"><a href="#L-631"><span class="linenos">631</span></a> <span class="n">sources</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="L-632"><a href="#L-632"><span class="linenos">632</span></a> +</span><span id="L-633"><a href="#L-633"><span class="linenos">633</span></a> <span class="c1"># Traverse FROMs, JOINs, and LATERALs in the order they are defined</span> +</span><span id="L-634"><a href="#L-634"><span class="linenos">634</span></a> <span class="n">expressions</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-635"><a href="#L-635"><span class="linenos">635</span></a> <span class="n">from_</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"from"</span><span class="p">)</span> +</span><span id="L-636"><a href="#L-636"><span class="linenos">636</span></a> <span class="k">if</span> <span class="n">from_</span><span class="p">:</span> +</span><span id="L-637"><a href="#L-637"><span class="linenos">637</span></a> <span class="n">expressions</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">from_</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> </span><span id="L-638"><a href="#L-638"><span class="linenos">638</span></a> -</span><span id="L-639"><a href="#L-639"><span class="linenos">639</span></a> <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="n">expressions</span><span class="p">:</span> -</span><span id="L-640"><a href="#L-640"><span class="linenos">640</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">Table</span><span class="p">):</span> -</span><span id="L-641"><a href="#L-641"><span class="linenos">641</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">name</span> -</span><span id="L-642"><a href="#L-642"><span class="linenos">642</span></a> <span class="n">source_name</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">alias_or_name</span> -</span><span id="L-643"><a href="#L-643"><span class="linenos">643</span></a> -</span><span id="L-644"><a href="#L-644"><span class="linenos">644</span></a> <span class="k">if</span> <span class="n">table_name</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">expression</span><span class="o">.</span><span class="n">db</span><span class="p">:</span> -</span><span id="L-645"><a href="#L-645"><span class="linenos">645</span></a> <span class="c1"># This is a reference to a parent source (e.g. a CTE), not an actual table, unless</span> -</span><span id="L-646"><a href="#L-646"><span class="linenos">646</span></a> <span class="c1"># it is pivoted, because then we get back a new table and hence a new source.</span> -</span><span id="L-647"><a href="#L-647"><span class="linenos">647</span></a> <span class="n">pivots</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">"pivots"</span><span class="p">)</span> -</span><span id="L-648"><a href="#L-648"><span class="linenos">648</span></a> <span class="k">if</span> <span class="n">pivots</span><span class="p">:</span> -</span><span id="L-649"><a href="#L-649"><span class="linenos">649</span></a> <span class="n">sources</span><span class="p">[</span><span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span><span class="p">]</span> <span class="o">=</span> <span class="n">expression</span> -</span><span id="L-650"><a href="#L-650"><span class="linenos">650</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-651"><a href="#L-651"><span class="linenos">651</span></a> <span class="n">sources</span><span class="p">[</span><span class="n">source_name</span><span class="p">]</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">table_name</span><span class="p">]</span> -</span><span id="L-652"><a href="#L-652"><span class="linenos">652</span></a> <span class="k">elif</span> <span class="n">source_name</span> <span class="ow">in</span> <span class="n">sources</span><span class="p">:</span> -</span><span id="L-653"><a href="#L-653"><span class="linenos">653</span></a> <span class="n">sources</span><span class="p">[</span><span class="n">find_new_name</span><span class="p">(</span><span class="n">sources</span><span class="p">,</span> <span class="n">table_name</span><span class="p">)]</span> <span class="o">=</span> <span class="n">expression</span> -</span><span id="L-654"><a href="#L-654"><span class="linenos">654</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-655"><a href="#L-655"><span class="linenos">655</span></a> <span class="n">sources</span><span class="p">[</span><span class="n">source_name</span><span class="p">]</span> <span class="o">=</span> <span class="n">expression</span> -</span><span id="L-656"><a href="#L-656"><span class="linenos">656</span></a> -</span><span id="L-657"><a href="#L-657"><span class="linenos">657</span></a> <span class="c1"># Make sure to not include the joins twice</span> -</span><span id="L-658"><a href="#L-658"><span class="linenos">658</span></a> <span class="k">if</span> <span class="n">expression</span> <span class="ow">is</span> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">:</span> -</span><span id="L-659"><a href="#L-659"><span class="linenos">659</span></a> <span class="n">expressions</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">this</span> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">)</span> <span class="ow">or</span> <span class="p">[])</span> -</span><span id="L-660"><a href="#L-660"><span class="linenos">660</span></a> -</span><span id="L-661"><a href="#L-661"><span class="linenos">661</span></a> <span class="k">continue</span> -</span><span id="L-662"><a href="#L-662"><span class="linenos">662</span></a> -</span><span id="L-663"><a href="#L-663"><span class="linenos">663</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DerivedTable</span><span class="p">):</span> -</span><span id="L-664"><a href="#L-664"><span class="linenos">664</span></a> <span class="k">continue</span> -</span><span id="L-665"><a href="#L-665"><span class="linenos">665</span></a> -</span><span id="L-666"><a href="#L-666"><span class="linenos">666</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">UDTF</span><span class="p">):</span> -</span><span id="L-667"><a href="#L-667"><span class="linenos">667</span></a> <span class="n">lateral_sources</span> <span class="o">=</span> <span class="n">sources</span> -</span><span id="L-668"><a href="#L-668"><span class="linenos">668</span></a> <span class="n">scope_type</span> <span class="o">=</span> <span class="n">ScopeType</span><span class="o">.</span><span class="n">UDTF</span> -</span><span id="L-669"><a href="#L-669"><span class="linenos">669</span></a> <span class="n">scopes</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">udtf_scopes</span> -</span><span id="L-670"><a href="#L-670"><span class="linenos">670</span></a> <span class="k">elif</span> <span class="n">_is_derived_table</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> -</span><span id="L-671"><a href="#L-671"><span class="linenos">671</span></a> <span class="n">lateral_sources</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-672"><a href="#L-672"><span class="linenos">672</span></a> <span class="n">scope_type</span> <span class="o">=</span> <span class="n">ScopeType</span><span class="o">.</span><span class="n">DERIVED_TABLE</span> -</span><span id="L-673"><a href="#L-673"><span class="linenos">673</span></a> <span class="n">scopes</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">derived_table_scopes</span> -</span><span id="L-674"><a href="#L-674"><span class="linenos">674</span></a> <span class="n">expressions</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">this</span> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">)</span> <span class="ow">or</span> <span class="p">[])</span> -</span><span id="L-675"><a href="#L-675"><span class="linenos">675</span></a> <span class="k">else</span><span class="p">:</span> -</span><span id="L-676"><a href="#L-676"><span class="linenos">676</span></a> <span class="c1"># Makes sure we check for possible sources in nested table constructs</span> -</span><span id="L-677"><a href="#L-677"><span class="linenos">677</span></a> <span class="n">expressions</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> -</span><span id="L-678"><a href="#L-678"><span class="linenos">678</span></a> <span class="n">expressions</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">this</span> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">)</span> <span class="ow">or</span> <span class="p">[])</span> -</span><span id="L-679"><a href="#L-679"><span class="linenos">679</span></a> <span class="k">continue</span> -</span><span id="L-680"><a href="#L-680"><span class="linenos">680</span></a> -</span><span id="L-681"><a href="#L-681"><span class="linenos">681</span></a> <span class="k">for</span> <span class="n">child_scope</span> <span class="ow">in</span> <span class="n">_traverse_scope</span><span class="p">(</span> -</span><span id="L-682"><a href="#L-682"><span class="linenos">682</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">branch</span><span class="p">(</span> -</span><span id="L-683"><a href="#L-683"><span class="linenos">683</span></a> <span class="n">expression</span><span class="p">,</span> -</span><span id="L-684"><a href="#L-684"><span class="linenos">684</span></a> <span class="n">lateral_sources</span><span class="o">=</span><span class="n">lateral_sources</span><span class="p">,</span> -</span><span id="L-685"><a href="#L-685"><span class="linenos">685</span></a> <span class="n">outer_column_list</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span><span class="p">,</span> -</span><span id="L-686"><a href="#L-686"><span class="linenos">686</span></a> <span class="n">scope_type</span><span class="o">=</span><span class="n">scope_type</span><span class="p">,</span> -</span><span id="L-687"><a href="#L-687"><span class="linenos">687</span></a> <span class="p">)</span> -</span><span id="L-688"><a href="#L-688"><span class="linenos">688</span></a> <span class="p">):</span> -</span><span id="L-689"><a href="#L-689"><span class="linenos">689</span></a> <span class="k">yield</span> <span class="n">child_scope</span> -</span><span id="L-690"><a href="#L-690"><span class="linenos">690</span></a> -</span><span id="L-691"><a href="#L-691"><span class="linenos">691</span></a> <span class="c1"># Tables without aliases will be set as ""</span> -</span><span id="L-692"><a href="#L-692"><span class="linenos">692</span></a> <span class="c1"># This shouldn't be a problem once qualify_columns runs, as it adds aliases on everything.</span> -</span><span id="L-693"><a href="#L-693"><span class="linenos">693</span></a> <span class="c1"># Until then, this means that only a single, unaliased derived table is allowed (rather,</span> -</span><span id="L-694"><a href="#L-694"><span class="linenos">694</span></a> <span class="c1"># the latest one wins.</span> -</span><span id="L-695"><a href="#L-695"><span class="linenos">695</span></a> <span class="n">alias</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">alias</span> -</span><span id="L-696"><a href="#L-696"><span class="linenos">696</span></a> <span class="n">sources</span><span class="p">[</span><span class="n">alias</span><span class="p">]</span> <span class="o">=</span> <span class="n">child_scope</span> -</span><span id="L-697"><a href="#L-697"><span class="linenos">697</span></a> -</span><span id="L-698"><a href="#L-698"><span class="linenos">698</span></a> <span class="c1"># append the final child_scope yielded</span> -</span><span id="L-699"><a href="#L-699"><span class="linenos">699</span></a> <span class="n">scopes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">child_scope</span><span class="p">)</span> -</span><span id="L-700"><a href="#L-700"><span class="linenos">700</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">table_scopes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">child_scope</span><span class="p">)</span> -</span><span id="L-701"><a href="#L-701"><span class="linenos">701</span></a> -</span><span id="L-702"><a href="#L-702"><span class="linenos">702</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">sources</span><span class="p">)</span> -</span><span id="L-703"><a href="#L-703"><span class="linenos">703</span></a> +</span><span id="L-639"><a href="#L-639"><span class="linenos">639</span></a> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">)</span> <span class="ow">or</span> <span class="p">[]:</span> +</span><span id="L-640"><a href="#L-640"><span class="linenos">640</span></a> <span class="n">expressions</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> +</span><span id="L-641"><a href="#L-641"><span class="linenos">641</span></a> +</span><span id="L-642"><a href="#L-642"><span class="linenos">642</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Table</span><span class="p">):</span> +</span><span id="L-643"><a href="#L-643"><span class="linenos">643</span></a> <span class="n">expressions</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">)</span> +</span><span id="L-644"><a href="#L-644"><span class="linenos">644</span></a> +</span><span id="L-645"><a href="#L-645"><span class="linenos">645</span></a> <span class="n">expressions</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">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">"laterals"</span><span class="p">)</span> <span class="ow">or</span> <span class="p">[])</span> +</span><span id="L-646"><a href="#L-646"><span class="linenos">646</span></a> +</span><span id="L-647"><a href="#L-647"><span class="linenos">647</span></a> <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="n">expressions</span><span class="p">:</span> +</span><span id="L-648"><a href="#L-648"><span class="linenos">648</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">Table</span><span class="p">):</span> +</span><span id="L-649"><a href="#L-649"><span class="linenos">649</span></a> <span class="n">table_name</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">name</span> +</span><span id="L-650"><a href="#L-650"><span class="linenos">650</span></a> <span class="n">source_name</span> <span class="o">=</span> <span class="n">expression</span><span class="o">.</span><span class="n">alias_or_name</span> +</span><span id="L-651"><a href="#L-651"><span class="linenos">651</span></a> +</span><span id="L-652"><a href="#L-652"><span class="linenos">652</span></a> <span class="k">if</span> <span class="n">table_name</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span> <span class="ow">and</span> <span class="ow">not</span> <span class="n">expression</span><span class="o">.</span><span class="n">db</span><span class="p">:</span> +</span><span id="L-653"><a href="#L-653"><span class="linenos">653</span></a> <span class="c1"># This is a reference to a parent source (e.g. a CTE), not an actual table, unless</span> +</span><span id="L-654"><a href="#L-654"><span class="linenos">654</span></a> <span class="c1"># it is pivoted, because then we get back a new table and hence a new source.</span> +</span><span id="L-655"><a href="#L-655"><span class="linenos">655</span></a> <span class="n">pivots</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">"pivots"</span><span class="p">)</span> +</span><span id="L-656"><a href="#L-656"><span class="linenos">656</span></a> <span class="k">if</span> <span class="n">pivots</span><span class="p">:</span> +</span><span id="L-657"><a href="#L-657"><span class="linenos">657</span></a> <span class="n">sources</span><span class="p">[</span><span class="n">pivots</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">alias</span><span class="p">]</span> <span class="o">=</span> <span class="n">expression</span> +</span><span id="L-658"><a href="#L-658"><span class="linenos">658</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-659"><a href="#L-659"><span class="linenos">659</span></a> <span class="n">sources</span><span class="p">[</span><span class="n">source_name</span><span class="p">]</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">table_name</span><span class="p">]</span> +</span><span id="L-660"><a href="#L-660"><span class="linenos">660</span></a> <span class="k">elif</span> <span class="n">source_name</span> <span class="ow">in</span> <span class="n">sources</span><span class="p">:</span> +</span><span id="L-661"><a href="#L-661"><span class="linenos">661</span></a> <span class="n">sources</span><span class="p">[</span><span class="n">find_new_name</span><span class="p">(</span><span class="n">sources</span><span class="p">,</span> <span class="n">table_name</span><span class="p">)]</span> <span class="o">=</span> <span class="n">expression</span> +</span><span id="L-662"><a href="#L-662"><span class="linenos">662</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-663"><a href="#L-663"><span class="linenos">663</span></a> <span class="n">sources</span><span class="p">[</span><span class="n">source_name</span><span class="p">]</span> <span class="o">=</span> <span class="n">expression</span> +</span><span id="L-664"><a href="#L-664"><span class="linenos">664</span></a> +</span><span id="L-665"><a href="#L-665"><span class="linenos">665</span></a> <span class="c1"># Make sure to not include the joins twice</span> +</span><span id="L-666"><a href="#L-666"><span class="linenos">666</span></a> <span class="k">if</span> <span class="n">expression</span> <span class="ow">is</span> <span class="ow">not</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">:</span> +</span><span id="L-667"><a href="#L-667"><span class="linenos">667</span></a> <span class="n">expressions</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">this</span> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">)</span> <span class="ow">or</span> <span class="p">[])</span> +</span><span id="L-668"><a href="#L-668"><span class="linenos">668</span></a> +</span><span id="L-669"><a href="#L-669"><span class="linenos">669</span></a> <span class="k">continue</span> +</span><span id="L-670"><a href="#L-670"><span class="linenos">670</span></a> +</span><span id="L-671"><a href="#L-671"><span class="linenos">671</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DerivedTable</span><span class="p">):</span> +</span><span id="L-672"><a href="#L-672"><span class="linenos">672</span></a> <span class="k">continue</span> +</span><span id="L-673"><a href="#L-673"><span class="linenos">673</span></a> +</span><span id="L-674"><a href="#L-674"><span class="linenos">674</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">UDTF</span><span class="p">):</span> +</span><span id="L-675"><a href="#L-675"><span class="linenos">675</span></a> <span class="n">lateral_sources</span> <span class="o">=</span> <span class="n">sources</span> +</span><span id="L-676"><a href="#L-676"><span class="linenos">676</span></a> <span class="n">scope_type</span> <span class="o">=</span> <span class="n">ScopeType</span><span class="o">.</span><span class="n">UDTF</span> +</span><span id="L-677"><a href="#L-677"><span class="linenos">677</span></a> <span class="n">scopes</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">udtf_scopes</span> +</span><span id="L-678"><a href="#L-678"><span class="linenos">678</span></a> <span class="k">elif</span> <span class="n">_is_derived_table</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-679"><a href="#L-679"><span class="linenos">679</span></a> <span class="n">lateral_sources</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-680"><a href="#L-680"><span class="linenos">680</span></a> <span class="n">scope_type</span> <span class="o">=</span> <span class="n">ScopeType</span><span class="o">.</span><span class="n">DERIVED_TABLE</span> +</span><span id="L-681"><a href="#L-681"><span class="linenos">681</span></a> <span class="n">scopes</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">derived_table_scopes</span> +</span><span id="L-682"><a href="#L-682"><span class="linenos">682</span></a> <span class="n">expressions</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">this</span> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">)</span> <span class="ow">or</span> <span class="p">[])</span> +</span><span id="L-683"><a href="#L-683"><span class="linenos">683</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-684"><a href="#L-684"><span class="linenos">684</span></a> <span class="c1"># Makes sure we check for possible sources in nested table constructs</span> +</span><span id="L-685"><a href="#L-685"><span class="linenos">685</span></a> <span class="n">expressions</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">)</span> +</span><span id="L-686"><a href="#L-686"><span class="linenos">686</span></a> <span class="n">expressions</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">join</span><span class="o">.</span><span class="n">this</span> <span class="k">for</span> <span class="n">join</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="s2">"joins"</span><span class="p">)</span> <span class="ow">or</span> <span class="p">[])</span> +</span><span id="L-687"><a href="#L-687"><span class="linenos">687</span></a> <span class="k">continue</span> +</span><span id="L-688"><a href="#L-688"><span class="linenos">688</span></a> +</span><span id="L-689"><a href="#L-689"><span class="linenos">689</span></a> <span class="k">for</span> <span class="n">child_scope</span> <span class="ow">in</span> <span class="n">_traverse_scope</span><span class="p">(</span> +</span><span id="L-690"><a href="#L-690"><span class="linenos">690</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">branch</span><span class="p">(</span> +</span><span id="L-691"><a href="#L-691"><span class="linenos">691</span></a> <span class="n">expression</span><span class="p">,</span> +</span><span id="L-692"><a href="#L-692"><span class="linenos">692</span></a> <span class="n">lateral_sources</span><span class="o">=</span><span class="n">lateral_sources</span><span class="p">,</span> +</span><span id="L-693"><a href="#L-693"><span class="linenos">693</span></a> <span class="n">outer_column_list</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span><span class="p">,</span> +</span><span id="L-694"><a href="#L-694"><span class="linenos">694</span></a> <span class="n">scope_type</span><span class="o">=</span><span class="n">scope_type</span><span class="p">,</span> +</span><span id="L-695"><a href="#L-695"><span class="linenos">695</span></a> <span class="p">)</span> +</span><span id="L-696"><a href="#L-696"><span class="linenos">696</span></a> <span class="p">):</span> +</span><span id="L-697"><a href="#L-697"><span class="linenos">697</span></a> <span class="k">yield</span> <span class="n">child_scope</span> +</span><span id="L-698"><a href="#L-698"><span class="linenos">698</span></a> +</span><span id="L-699"><a href="#L-699"><span class="linenos">699</span></a> <span class="c1"># Tables without aliases will be set as ""</span> +</span><span id="L-700"><a href="#L-700"><span class="linenos">700</span></a> <span class="c1"># This shouldn't be a problem once qualify_columns runs, as it adds aliases on everything.</span> +</span><span id="L-701"><a href="#L-701"><span class="linenos">701</span></a> <span class="c1"># Until then, this means that only a single, unaliased derived table is allowed (rather,</span> +</span><span id="L-702"><a href="#L-702"><span class="linenos">702</span></a> <span class="c1"># the latest one wins.</span> +</span><span id="L-703"><a href="#L-703"><span class="linenos">703</span></a> <span class="n">sources</span><span class="p">[</span><span class="n">expression</span><span class="o">.</span><span class="n">alias</span><span class="p">]</span> <span class="o">=</span> <span class="n">child_scope</span> </span><span id="L-704"><a href="#L-704"><span class="linenos">704</span></a> -</span><span id="L-705"><a href="#L-705"><span class="linenos">705</span></a><span class="k">def</span> <span class="nf">_traverse_subqueries</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> -</span><span id="L-706"><a href="#L-706"><span class="linenos">706</span></a> <span class="k">for</span> <span class="n">subquery</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">subqueries</span><span class="p">:</span> -</span><span id="L-707"><a href="#L-707"><span class="linenos">707</span></a> <span class="n">top</span> <span class="o">=</span> <span class="kc">None</span> -</span><span id="L-708"><a href="#L-708"><span class="linenos">708</span></a> <span class="k">for</span> <span class="n">child_scope</span> <span class="ow">in</span> <span class="n">_traverse_scope</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">branch</span><span class="p">(</span><span class="n">subquery</span><span class="p">,</span> <span class="n">scope_type</span><span class="o">=</span><span class="n">ScopeType</span><span class="o">.</span><span class="n">SUBQUERY</span><span class="p">)):</span> -</span><span id="L-709"><a href="#L-709"><span class="linenos">709</span></a> <span class="k">yield</span> <span class="n">child_scope</span> -</span><span id="L-710"><a href="#L-710"><span class="linenos">710</span></a> <span class="n">top</span> <span class="o">=</span> <span class="n">child_scope</span> -</span><span id="L-711"><a href="#L-711"><span class="linenos">711</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">subquery_scopes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">top</span><span class="p">)</span> -</span><span id="L-712"><a href="#L-712"><span class="linenos">712</span></a> -</span><span id="L-713"><a href="#L-713"><span class="linenos">713</span></a> -</span><span id="L-714"><a href="#L-714"><span class="linenos">714</span></a><span class="k">def</span> <span class="nf">walk_in_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">bfs</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> -</span><span id="L-715"><a href="#L-715"><span class="linenos">715</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="L-716"><a href="#L-716"><span class="linenos">716</span></a><span class="sd"> Returns a generator object which visits all nodes in the syntrax tree, stopping at</span> -</span><span id="L-717"><a href="#L-717"><span class="linenos">717</span></a><span class="sd"> nodes that start child scopes.</span> -</span><span id="L-718"><a href="#L-718"><span class="linenos">718</span></a> -</span><span id="L-719"><a href="#L-719"><span class="linenos">719</span></a><span class="sd"> Args:</span> -</span><span id="L-720"><a href="#L-720"><span class="linenos">720</span></a><span class="sd"> expression (exp.Expression):</span> -</span><span id="L-721"><a href="#L-721"><span class="linenos">721</span></a><span class="sd"> bfs (bool): if set to True the BFS traversal order will be applied,</span> -</span><span id="L-722"><a href="#L-722"><span class="linenos">722</span></a><span class="sd"> otherwise the DFS traversal will be used instead.</span> -</span><span id="L-723"><a href="#L-723"><span class="linenos">723</span></a> -</span><span id="L-724"><a href="#L-724"><span class="linenos">724</span></a><span class="sd"> Yields:</span> -</span><span id="L-725"><a href="#L-725"><span class="linenos">725</span></a><span class="sd"> tuple[exp.Expression, Optional[exp.Expression], str]: node, parent, arg key</span> -</span><span id="L-726"><a href="#L-726"><span class="linenos">726</span></a><span class="sd"> """</span> -</span><span id="L-727"><a href="#L-727"><span class="linenos">727</span></a> <span class="c1"># We'll use this variable to pass state into the dfs generator.</span> -</span><span id="L-728"><a href="#L-728"><span class="linenos">728</span></a> <span class="c1"># Whenever we set it to True, we exclude a subtree from traversal.</span> -</span><span id="L-729"><a href="#L-729"><span class="linenos">729</span></a> <span class="n">prune</span> <span class="o">=</span> <span class="kc">False</span> -</span><span id="L-730"><a href="#L-730"><span class="linenos">730</span></a> -</span><span id="L-731"><a href="#L-731"><span class="linenos">731</span></a> <span class="k">for</span> <span class="n">node</span><span class="p">,</span> <span class="n">parent</span><span class="p">,</span> <span class="n">key</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">walk</span><span class="p">(</span><span class="n">bfs</span><span class="o">=</span><span class="n">bfs</span><span class="p">,</span> <span class="n">prune</span><span class="o">=</span><span class="k">lambda</span> <span class="o">*</span><span class="n">_</span><span class="p">:</span> <span class="n">prune</span><span class="p">):</span> -</span><span id="L-732"><a href="#L-732"><span class="linenos">732</span></a> <span class="n">prune</span> <span class="o">=</span> <span class="kc">False</span> -</span><span id="L-733"><a href="#L-733"><span class="linenos">733</span></a> -</span><span id="L-734"><a href="#L-734"><span class="linenos">734</span></a> <span class="k">yield</span> <span class="n">node</span><span class="p">,</span> <span class="n">parent</span><span class="p">,</span> <span class="n">key</span> -</span><span id="L-735"><a href="#L-735"><span class="linenos">735</span></a> -</span><span id="L-736"><a href="#L-736"><span class="linenos">736</span></a> <span class="k">if</span> <span class="n">node</span> <span class="ow">is</span> <span class="n">expression</span><span class="p">:</span> -</span><span id="L-737"><a href="#L-737"><span class="linenos">737</span></a> <span class="k">continue</span> -</span><span id="L-738"><a href="#L-738"><span class="linenos">738</span></a> <span class="k">if</span> <span class="p">(</span> -</span><span id="L-739"><a href="#L-739"><span class="linenos">739</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">CTE</span><span class="p">)</span> -</span><span id="L-740"><a href="#L-740"><span class="linenos">740</span></a> <span class="ow">or</span> <span class="p">(</span> -</span><span id="L-741"><a href="#L-741"><span class="linenos">741</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">)</span> -</span><span id="L-742"><a href="#L-742"><span class="linenos">742</span></a> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">parent</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">From</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">))</span> -</span><span id="L-743"><a href="#L-743"><span class="linenos">743</span></a> <span class="ow">and</span> <span class="n">_is_derived_table</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="L-744"><a href="#L-744"><span class="linenos">744</span></a> <span class="p">)</span> -</span><span id="L-745"><a href="#L-745"><span class="linenos">745</span></a> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">)</span> -</span><span id="L-746"><a href="#L-746"><span class="linenos">746</span></a> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">)</span> -</span><span id="L-747"><a href="#L-747"><span class="linenos">747</span></a> <span class="p">):</span> -</span><span id="L-748"><a href="#L-748"><span class="linenos">748</span></a> <span class="n">prune</span> <span class="o">=</span> <span class="kc">True</span> +</span><span id="L-705"><a href="#L-705"><span class="linenos">705</span></a> <span class="c1"># append the final child_scope yielded</span> +</span><span id="L-706"><a href="#L-706"><span class="linenos">706</span></a> <span class="n">scopes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">child_scope</span><span class="p">)</span> +</span><span id="L-707"><a href="#L-707"><span class="linenos">707</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">table_scopes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">child_scope</span><span class="p">)</span> +</span><span id="L-708"><a href="#L-708"><span class="linenos">708</span></a> +</span><span id="L-709"><a href="#L-709"><span class="linenos">709</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">sources</span><span class="p">)</span> +</span><span id="L-710"><a href="#L-710"><span class="linenos">710</span></a> +</span><span id="L-711"><a href="#L-711"><span class="linenos">711</span></a> +</span><span id="L-712"><a href="#L-712"><span class="linenos">712</span></a><span class="k">def</span> <span class="nf">_traverse_subqueries</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> +</span><span id="L-713"><a href="#L-713"><span class="linenos">713</span></a> <span class="k">for</span> <span class="n">subquery</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">subqueries</span><span class="p">:</span> +</span><span id="L-714"><a href="#L-714"><span class="linenos">714</span></a> <span class="n">top</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-715"><a href="#L-715"><span class="linenos">715</span></a> <span class="k">for</span> <span class="n">child_scope</span> <span class="ow">in</span> <span class="n">_traverse_scope</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">branch</span><span class="p">(</span><span class="n">subquery</span><span class="p">,</span> <span class="n">scope_type</span><span class="o">=</span><span class="n">ScopeType</span><span class="o">.</span><span class="n">SUBQUERY</span><span class="p">)):</span> +</span><span id="L-716"><a href="#L-716"><span class="linenos">716</span></a> <span class="k">yield</span> <span class="n">child_scope</span> +</span><span id="L-717"><a href="#L-717"><span class="linenos">717</span></a> <span class="n">top</span> <span class="o">=</span> <span class="n">child_scope</span> +</span><span id="L-718"><a href="#L-718"><span class="linenos">718</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">subquery_scopes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">top</span><span class="p">)</span> +</span><span id="L-719"><a href="#L-719"><span class="linenos">719</span></a> +</span><span id="L-720"><a href="#L-720"><span class="linenos">720</span></a> +</span><span id="L-721"><a href="#L-721"><span class="linenos">721</span></a><span class="k">def</span> <span class="nf">_traverse_udtfs</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> +</span><span id="L-722"><a href="#L-722"><span class="linenos">722</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Unnest</span><span class="p">):</span> +</span><span id="L-723"><a href="#L-723"><span class="linenos">723</span></a> <span class="n">expressions</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">expressions</span> +</span><span id="L-724"><a href="#L-724"><span class="linenos">724</span></a> <span class="k">elif</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Lateral</span><span class="p">):</span> +</span><span id="L-725"><a href="#L-725"><span class="linenos">725</span></a> <span class="n">expressions</span> <span class="o">=</span> <span class="p">[</span><span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">this</span><span class="p">]</span> +</span><span id="L-726"><a href="#L-726"><span class="linenos">726</span></a> <span class="k">else</span><span class="p">:</span> +</span><span id="L-727"><a href="#L-727"><span class="linenos">727</span></a> <span class="n">expressions</span> <span class="o">=</span> <span class="p">[]</span> +</span><span id="L-728"><a href="#L-728"><span class="linenos">728</span></a> +</span><span id="L-729"><a href="#L-729"><span class="linenos">729</span></a> <span class="n">sources</span> <span class="o">=</span> <span class="p">{}</span> +</span><span id="L-730"><a href="#L-730"><span class="linenos">730</span></a> <span class="k">for</span> <span class="n">expression</span> <span class="ow">in</span> <span class="n">expressions</span><span class="p">:</span> +</span><span id="L-731"><a href="#L-731"><span class="linenos">731</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 class="ow">and</span> <span class="n">_is_derived_table</span><span class="p">(</span><span class="n">expression</span><span class="p">):</span> +</span><span id="L-732"><a href="#L-732"><span class="linenos">732</span></a> <span class="n">top</span> <span class="o">=</span> <span class="kc">None</span> +</span><span id="L-733"><a href="#L-733"><span class="linenos">733</span></a> <span class="k">for</span> <span class="n">child_scope</span> <span class="ow">in</span> <span class="n">_traverse_scope</span><span class="p">(</span> +</span><span id="L-734"><a href="#L-734"><span class="linenos">734</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">branch</span><span class="p">(</span> +</span><span id="L-735"><a href="#L-735"><span class="linenos">735</span></a> <span class="n">expression</span><span class="p">,</span> +</span><span id="L-736"><a href="#L-736"><span class="linenos">736</span></a> <span class="n">scope_type</span><span class="o">=</span><span class="n">ScopeType</span><span class="o">.</span><span class="n">DERIVED_TABLE</span><span class="p">,</span> +</span><span id="L-737"><a href="#L-737"><span class="linenos">737</span></a> <span class="n">outer_column_list</span><span class="o">=</span><span class="n">expression</span><span class="o">.</span><span class="n">alias_column_names</span><span class="p">,</span> +</span><span id="L-738"><a href="#L-738"><span class="linenos">738</span></a> <span class="p">)</span> +</span><span id="L-739"><a href="#L-739"><span class="linenos">739</span></a> <span class="p">):</span> +</span><span id="L-740"><a href="#L-740"><span class="linenos">740</span></a> <span class="k">yield</span> <span class="n">child_scope</span> +</span><span id="L-741"><a href="#L-741"><span class="linenos">741</span></a> <span class="n">top</span> <span class="o">=</span> <span class="n">child_scope</span> +</span><span id="L-742"><a href="#L-742"><span class="linenos">742</span></a> <span class="n">sources</span><span class="p">[</span><span class="n">expression</span><span class="o">.</span><span class="n">alias</span><span class="p">]</span> <span class="o">=</span> <span class="n">child_scope</span> +</span><span id="L-743"><a href="#L-743"><span class="linenos">743</span></a> +</span><span id="L-744"><a href="#L-744"><span class="linenos">744</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">derived_table_scopes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">top</span><span class="p">)</span> +</span><span id="L-745"><a href="#L-745"><span class="linenos">745</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">table_scopes</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">top</span><span class="p">)</span> +</span><span id="L-746"><a href="#L-746"><span class="linenos">746</span></a> +</span><span id="L-747"><a href="#L-747"><span class="linenos">747</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">update</span><span class="p">(</span><span class="n">sources</span><span class="p">)</span> +</span><span id="L-748"><a href="#L-748"><span class="linenos">748</span></a> </span><span id="L-749"><a href="#L-749"><span class="linenos">749</span></a> -</span><span id="L-750"><a href="#L-750"><span class="linenos">750</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">)):</span> -</span><span id="L-751"><a href="#L-751"><span class="linenos">751</span></a> <span class="c1"># The following args are not actually in the inner scope, so we should visit them</span> -</span><span id="L-752"><a href="#L-752"><span class="linenos">752</span></a> <span class="k">for</span> <span class="n">key</span> <span class="ow">in</span> <span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="s2">"laterals"</span><span class="p">,</span> <span class="s2">"pivots"</span><span class="p">):</span> -</span><span id="L-753"><a href="#L-753"><span class="linenos">753</span></a> <span class="k">for</span> <span class="n">arg</span> <span class="ow">in</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">key</span><span class="p">)</span> <span class="ow">or</span> <span class="p">[]:</span> -</span><span id="L-754"><a href="#L-754"><span class="linenos">754</span></a> <span class="k">yield from</span> <span class="n">walk_in_scope</span><span class="p">(</span><span class="n">arg</span><span class="p">,</span> <span class="n">bfs</span><span class="o">=</span><span class="n">bfs</span><span class="p">)</span> +</span><span id="L-750"><a href="#L-750"><span class="linenos">750</span></a><span class="k">def</span> <span class="nf">_traverse_ddl</span><span class="p">(</span><span class="n">scope</span><span class="p">):</span> +</span><span id="L-751"><a href="#L-751"><span class="linenos">751</span></a> <span class="k">yield from</span> <span class="n">_traverse_ctes</span><span class="p">(</span><span class="n">scope</span><span class="p">)</span> +</span><span id="L-752"><a href="#L-752"><span class="linenos">752</span></a> +</span><span id="L-753"><a href="#L-753"><span class="linenos">753</span></a> <span class="n">query_scope</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">branch</span><span class="p">(</span> +</span><span id="L-754"><a href="#L-754"><span class="linenos">754</span></a> <span class="n">scope</span><span class="o">.</span><span class="n">expression</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">scope_type</span><span class="o">=</span><span class="n">ScopeType</span><span class="o">.</span><span class="n">DERIVED_TABLE</span><span class="p">,</span> <span class="n">chain_sources</span><span class="o">=</span><span class="n">scope</span><span class="o">.</span><span class="n">sources</span> +</span><span id="L-755"><a href="#L-755"><span class="linenos">755</span></a> <span class="p">)</span> +</span><span id="L-756"><a href="#L-756"><span class="linenos">756</span></a> <span class="n">query_scope</span><span class="o">.</span><span class="n">_collect</span><span class="p">()</span> +</span><span id="L-757"><a href="#L-757"><span class="linenos">757</span></a> <span class="n">query_scope</span><span class="o">.</span><span class="n">_ctes</span> <span class="o">=</span> <span class="n">scope</span><span class="o">.</span><span class="n">ctes</span> <span class="o">+</span> <span class="n">query_scope</span><span class="o">.</span><span class="n">_ctes</span> +</span><span id="L-758"><a href="#L-758"><span class="linenos">758</span></a> +</span><span id="L-759"><a href="#L-759"><span class="linenos">759</span></a> <span class="k">yield from</span> <span class="n">_traverse_scope</span><span class="p">(</span><span class="n">query_scope</span><span class="p">)</span> +</span><span id="L-760"><a href="#L-760"><span class="linenos">760</span></a> +</span><span id="L-761"><a href="#L-761"><span class="linenos">761</span></a> +</span><span id="L-762"><a href="#L-762"><span class="linenos">762</span></a><span class="k">def</span> <span class="nf">walk_in_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">bfs</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> +</span><span id="L-763"><a href="#L-763"><span class="linenos">763</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="L-764"><a href="#L-764"><span class="linenos">764</span></a><span class="sd"> Returns a generator object which visits all nodes in the syntrax tree, stopping at</span> +</span><span id="L-765"><a href="#L-765"><span class="linenos">765</span></a><span class="sd"> nodes that start child scopes.</span> +</span><span id="L-766"><a href="#L-766"><span class="linenos">766</span></a> +</span><span id="L-767"><a href="#L-767"><span class="linenos">767</span></a><span class="sd"> Args:</span> +</span><span id="L-768"><a href="#L-768"><span class="linenos">768</span></a><span class="sd"> expression (exp.Expression):</span> +</span><span id="L-769"><a href="#L-769"><span class="linenos">769</span></a><span class="sd"> bfs (bool): if set to True the BFS traversal order will be applied,</span> +</span><span id="L-770"><a href="#L-770"><span class="linenos">770</span></a><span class="sd"> otherwise the DFS traversal will be used instead.</span> +</span><span id="L-771"><a href="#L-771"><span class="linenos">771</span></a> +</span><span id="L-772"><a href="#L-772"><span class="linenos">772</span></a><span class="sd"> Yields:</span> +</span><span id="L-773"><a href="#L-773"><span class="linenos">773</span></a><span class="sd"> tuple[exp.Expression, Optional[exp.Expression], str]: node, parent, arg key</span> +</span><span id="L-774"><a href="#L-774"><span class="linenos">774</span></a><span class="sd"> """</span> +</span><span id="L-775"><a href="#L-775"><span class="linenos">775</span></a> <span class="c1"># We'll use this variable to pass state into the dfs generator.</span> +</span><span id="L-776"><a href="#L-776"><span class="linenos">776</span></a> <span class="c1"># Whenever we set it to True, we exclude a subtree from traversal.</span> +</span><span id="L-777"><a href="#L-777"><span class="linenos">777</span></a> <span class="n">prune</span> <span class="o">=</span> <span class="kc">False</span> +</span><span id="L-778"><a href="#L-778"><span class="linenos">778</span></a> +</span><span id="L-779"><a href="#L-779"><span class="linenos">779</span></a> <span class="k">for</span> <span class="n">node</span><span class="p">,</span> <span class="n">parent</span><span class="p">,</span> <span class="n">key</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">walk</span><span class="p">(</span><span class="n">bfs</span><span class="o">=</span><span class="n">bfs</span><span class="p">,</span> <span class="n">prune</span><span class="o">=</span><span class="k">lambda</span> <span class="o">*</span><span class="n">_</span><span class="p">:</span> <span class="n">prune</span><span class="p">):</span> +</span><span id="L-780"><a href="#L-780"><span class="linenos">780</span></a> <span class="n">prune</span> <span class="o">=</span> <span class="kc">False</span> +</span><span id="L-781"><a href="#L-781"><span class="linenos">781</span></a> +</span><span id="L-782"><a href="#L-782"><span class="linenos">782</span></a> <span class="k">yield</span> <span class="n">node</span><span class="p">,</span> <span class="n">parent</span><span class="p">,</span> <span class="n">key</span> +</span><span id="L-783"><a href="#L-783"><span class="linenos">783</span></a> +</span><span id="L-784"><a href="#L-784"><span class="linenos">784</span></a> <span class="k">if</span> <span class="n">node</span> <span class="ow">is</span> <span class="n">expression</span><span class="p">:</span> +</span><span id="L-785"><a href="#L-785"><span class="linenos">785</span></a> <span class="k">continue</span> +</span><span id="L-786"><a href="#L-786"><span class="linenos">786</span></a> <span class="k">if</span> <span class="p">(</span> +</span><span id="L-787"><a href="#L-787"><span class="linenos">787</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">CTE</span><span class="p">)</span> +</span><span id="L-788"><a href="#L-788"><span class="linenos">788</span></a> <span class="ow">or</span> <span class="p">(</span> +</span><span id="L-789"><a href="#L-789"><span class="linenos">789</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">)</span> +</span><span id="L-790"><a href="#L-790"><span class="linenos">790</span></a> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">parent</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">From</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">))</span> +</span><span id="L-791"><a href="#L-791"><span class="linenos">791</span></a> <span class="ow">and</span> <span class="n">_is_derived_table</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="L-792"><a href="#L-792"><span class="linenos">792</span></a> <span class="p">)</span> +</span><span id="L-793"><a href="#L-793"><span class="linenos">793</span></a> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">)</span> +</span><span id="L-794"><a href="#L-794"><span class="linenos">794</span></a> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">)</span> +</span><span id="L-795"><a href="#L-795"><span class="linenos">795</span></a> <span class="p">):</span> +</span><span id="L-796"><a href="#L-796"><span class="linenos">796</span></a> <span class="n">prune</span> <span class="o">=</span> <span class="kc">True</span> +</span><span id="L-797"><a href="#L-797"><span class="linenos">797</span></a> +</span><span id="L-798"><a href="#L-798"><span class="linenos">798</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">)):</span> +</span><span id="L-799"><a href="#L-799"><span class="linenos">799</span></a> <span class="c1"># The following args are not actually in the inner scope, so we should visit them</span> +</span><span id="L-800"><a href="#L-800"><span class="linenos">800</span></a> <span class="k">for</span> <span class="n">key</span> <span class="ow">in</span> <span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="s2">"laterals"</span><span class="p">,</span> <span class="s2">"pivots"</span><span class="p">):</span> +</span><span id="L-801"><a href="#L-801"><span class="linenos">801</span></a> <span class="k">for</span> <span class="n">arg</span> <span class="ow">in</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">key</span><span class="p">)</span> <span class="ow">or</span> <span class="p">[]:</span> +</span><span id="L-802"><a href="#L-802"><span class="linenos">802</span></a> <span class="k">yield from</span> <span class="n">walk_in_scope</span><span class="p">(</span><span class="n">arg</span><span class="p">,</span> <span class="n">bfs</span><span class="o">=</span><span class="n">bfs</span><span class="p">)</span> </span></pre></div> @@ -1534,53 +1582,56 @@ </span><span id="Scope-436"><a href="#Scope-436"><span class="linenos">436</span></a> <span class="nd">@property</span> </span><span id="Scope-437"><a href="#Scope-437"><span class="linenos">437</span></a> <span class="k">def</span> <span class="nf">is_correlated_subquery</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> </span><span id="Scope-438"><a href="#Scope-438"><span class="linenos">438</span></a><span class="w"> </span><span class="sd">"""Determine if this scope is a correlated subquery"""</span> -</span><span id="Scope-439"><a href="#Scope-439"><span class="linenos">439</span></a> <span class="k">return</span> <span class="nb">bool</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">is_subquery</span> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">external_columns</span><span class="p">)</span> -</span><span id="Scope-440"><a href="#Scope-440"><span class="linenos">440</span></a> -</span><span id="Scope-441"><a href="#Scope-441"><span class="linenos">441</span></a> <span class="k">def</span> <span class="nf">rename_source</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">old_name</span><span class="p">,</span> <span class="n">new_name</span><span class="p">):</span> -</span><span id="Scope-442"><a href="#Scope-442"><span class="linenos">442</span></a><span class="w"> </span><span class="sd">"""Rename a source in this scope"""</span> -</span><span id="Scope-443"><a href="#Scope-443"><span class="linenos">443</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">old_name</span> <span class="ow">or</span> <span class="s2">""</span><span class="p">,</span> <span class="p">[])</span> -</span><span id="Scope-444"><a href="#Scope-444"><span class="linenos">444</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">new_name</span><span class="p">]</span> <span class="o">=</span> <span class="n">columns</span> -</span><span id="Scope-445"><a href="#Scope-445"><span class="linenos">445</span></a> -</span><span id="Scope-446"><a href="#Scope-446"><span class="linenos">446</span></a> <span class="k">def</span> <span class="nf">add_source</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">source</span><span class="p">):</span> -</span><span id="Scope-447"><a href="#Scope-447"><span class="linenos">447</span></a><span class="w"> </span><span class="sd">"""Add a source to this scope"""</span> -</span><span id="Scope-448"><a href="#Scope-448"><span class="linenos">448</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">source</span> -</span><span id="Scope-449"><a href="#Scope-449"><span class="linenos">449</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> -</span><span id="Scope-450"><a href="#Scope-450"><span class="linenos">450</span></a> -</span><span id="Scope-451"><a href="#Scope-451"><span class="linenos">451</span></a> <span class="k">def</span> <span class="nf">remove_source</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">):</span> -</span><span id="Scope-452"><a href="#Scope-452"><span class="linenos">452</span></a><span class="w"> </span><span class="sd">"""Remove a source from this scope"""</span> -</span><span id="Scope-453"><a href="#Scope-453"><span class="linenos">453</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> -</span><span id="Scope-454"><a href="#Scope-454"><span class="linenos">454</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> -</span><span id="Scope-455"><a href="#Scope-455"><span class="linenos">455</span></a> -</span><span id="Scope-456"><a href="#Scope-456"><span class="linenos">456</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><span id="Scope-457"><a href="#Scope-457"><span class="linenos">457</span></a> <span class="k">return</span> <span class="sa">f</span><span class="s2">"Scope<</span><span class="si">{</span><span class="bp">self</span><span class="o">.</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">>"</span> +</span><span id="Scope-439"><a href="#Scope-439"><span class="linenos">439</span></a> <span class="k">return</span> <span class="nb">bool</span><span class="p">(</span> +</span><span id="Scope-440"><a href="#Scope-440"><span class="linenos">440</span></a> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">is_subquery</span> <span class="ow">or</span> <span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">parent</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">parent</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Lateral</span><span class="p">)))</span> +</span><span id="Scope-441"><a href="#Scope-441"><span class="linenos">441</span></a> <span class="ow">and</span> <span class="bp">self</span><span class="o">.</span><span class="n">external_columns</span> +</span><span id="Scope-442"><a href="#Scope-442"><span class="linenos">442</span></a> <span class="p">)</span> +</span><span id="Scope-443"><a href="#Scope-443"><span class="linenos">443</span></a> +</span><span id="Scope-444"><a href="#Scope-444"><span class="linenos">444</span></a> <span class="k">def</span> <span class="nf">rename_source</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">old_name</span><span class="p">,</span> <span class="n">new_name</span><span class="p">):</span> +</span><span id="Scope-445"><a href="#Scope-445"><span class="linenos">445</span></a><span class="w"> </span><span class="sd">"""Rename a source in this scope"""</span> +</span><span id="Scope-446"><a href="#Scope-446"><span class="linenos">446</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">old_name</span> <span class="ow">or</span> <span class="s2">""</span><span class="p">,</span> <span class="p">[])</span> +</span><span id="Scope-447"><a href="#Scope-447"><span class="linenos">447</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">new_name</span><span class="p">]</span> <span class="o">=</span> <span class="n">columns</span> +</span><span id="Scope-448"><a href="#Scope-448"><span class="linenos">448</span></a> +</span><span id="Scope-449"><a href="#Scope-449"><span class="linenos">449</span></a> <span class="k">def</span> <span class="nf">add_source</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">source</span><span class="p">):</span> +</span><span id="Scope-450"><a href="#Scope-450"><span class="linenos">450</span></a><span class="w"> </span><span class="sd">"""Add a source to this scope"""</span> +</span><span id="Scope-451"><a href="#Scope-451"><span class="linenos">451</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">source</span> +</span><span id="Scope-452"><a href="#Scope-452"><span class="linenos">452</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> +</span><span id="Scope-453"><a href="#Scope-453"><span class="linenos">453</span></a> +</span><span id="Scope-454"><a href="#Scope-454"><span class="linenos">454</span></a> <span class="k">def</span> <span class="nf">remove_source</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">):</span> +</span><span id="Scope-455"><a href="#Scope-455"><span class="linenos">455</span></a><span class="w"> </span><span class="sd">"""Remove a source from this scope"""</span> +</span><span id="Scope-456"><a href="#Scope-456"><span class="linenos">456</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> +</span><span id="Scope-457"><a href="#Scope-457"><span class="linenos">457</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> </span><span id="Scope-458"><a href="#Scope-458"><span class="linenos">458</span></a> -</span><span id="Scope-459"><a href="#Scope-459"><span class="linenos">459</span></a> <span class="k">def</span> <span class="nf">traverse</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> -</span><span id="Scope-460"><a href="#Scope-460"><span class="linenos">460</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="Scope-461"><a href="#Scope-461"><span class="linenos">461</span></a><span class="sd"> Traverse the scope tree from this node.</span> -</span><span id="Scope-462"><a href="#Scope-462"><span class="linenos">462</span></a> -</span><span id="Scope-463"><a href="#Scope-463"><span class="linenos">463</span></a><span class="sd"> Yields:</span> -</span><span id="Scope-464"><a href="#Scope-464"><span class="linenos">464</span></a><span class="sd"> Scope: scope instances in depth-first-search post-order</span> -</span><span id="Scope-465"><a href="#Scope-465"><span class="linenos">465</span></a><span class="sd"> """</span> -</span><span id="Scope-466"><a href="#Scope-466"><span class="linenos">466</span></a> <span class="k">for</span> <span class="n">child_scope</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span> -</span><span id="Scope-467"><a href="#Scope-467"><span class="linenos">467</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">cte_scopes</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">union_scopes</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">table_scopes</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">subquery_scopes</span> -</span><span id="Scope-468"><a href="#Scope-468"><span class="linenos">468</span></a> <span class="p">):</span> -</span><span id="Scope-469"><a href="#Scope-469"><span class="linenos">469</span></a> <span class="k">yield from</span> <span class="n">child_scope</span><span class="o">.</span><span class="n">traverse</span><span class="p">()</span> -</span><span id="Scope-470"><a href="#Scope-470"><span class="linenos">470</span></a> <span class="k">yield</span> <span class="bp">self</span> -</span><span id="Scope-471"><a href="#Scope-471"><span class="linenos">471</span></a> -</span><span id="Scope-472"><a href="#Scope-472"><span class="linenos">472</span></a> <span class="k">def</span> <span class="nf">ref_count</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> -</span><span id="Scope-473"><a href="#Scope-473"><span class="linenos">473</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="Scope-474"><a href="#Scope-474"><span class="linenos">474</span></a><span class="sd"> Count the number of times each scope in this tree is referenced.</span> -</span><span id="Scope-475"><a href="#Scope-475"><span class="linenos">475</span></a> -</span><span id="Scope-476"><a href="#Scope-476"><span class="linenos">476</span></a><span class="sd"> Returns:</span> -</span><span id="Scope-477"><a href="#Scope-477"><span class="linenos">477</span></a><span class="sd"> dict[int, int]: Mapping of Scope instance ID to reference count</span> -</span><span id="Scope-478"><a href="#Scope-478"><span class="linenos">478</span></a><span class="sd"> """</span> -</span><span id="Scope-479"><a href="#Scope-479"><span class="linenos">479</span></a> <span class="n">scope_ref_count</span> <span class="o">=</span> <span class="n">defaultdict</span><span class="p">(</span><span class="k">lambda</span><span class="p">:</span> <span class="mi">0</span><span class="p">)</span> -</span><span id="Scope-480"><a href="#Scope-480"><span class="linenos">480</span></a> -</span><span id="Scope-481"><a href="#Scope-481"><span class="linenos">481</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">traverse</span><span class="p">():</span> -</span><span id="Scope-482"><a href="#Scope-482"><span class="linenos">482</span></a> <span class="k">for</span> <span class="n">_</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> -</span><span id="Scope-483"><a href="#Scope-483"><span class="linenos">483</span></a> <span class="n">scope_ref_count</span><span class="p">[</span><span class="nb">id</span><span class="p">(</span><span class="n">source</span><span class="p">)]</span> <span class="o">+=</span> <span class="mi">1</span> -</span><span id="Scope-484"><a href="#Scope-484"><span class="linenos">484</span></a> -</span><span id="Scope-485"><a href="#Scope-485"><span class="linenos">485</span></a> <span class="k">return</span> <span class="n">scope_ref_count</span> +</span><span id="Scope-459"><a href="#Scope-459"><span class="linenos">459</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><span id="Scope-460"><a href="#Scope-460"><span class="linenos">460</span></a> <span class="k">return</span> <span class="sa">f</span><span class="s2">"Scope<</span><span class="si">{</span><span class="bp">self</span><span class="o">.</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">>"</span> +</span><span id="Scope-461"><a href="#Scope-461"><span class="linenos">461</span></a> +</span><span id="Scope-462"><a href="#Scope-462"><span class="linenos">462</span></a> <span class="k">def</span> <span class="nf">traverse</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> +</span><span id="Scope-463"><a href="#Scope-463"><span class="linenos">463</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="Scope-464"><a href="#Scope-464"><span class="linenos">464</span></a><span class="sd"> Traverse the scope tree from this node.</span> +</span><span id="Scope-465"><a href="#Scope-465"><span class="linenos">465</span></a> +</span><span id="Scope-466"><a href="#Scope-466"><span class="linenos">466</span></a><span class="sd"> Yields:</span> +</span><span id="Scope-467"><a href="#Scope-467"><span class="linenos">467</span></a><span class="sd"> Scope: scope instances in depth-first-search post-order</span> +</span><span id="Scope-468"><a href="#Scope-468"><span class="linenos">468</span></a><span class="sd"> """</span> +</span><span id="Scope-469"><a href="#Scope-469"><span class="linenos">469</span></a> <span class="k">for</span> <span class="n">child_scope</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span> +</span><span id="Scope-470"><a href="#Scope-470"><span class="linenos">470</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">cte_scopes</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">union_scopes</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">table_scopes</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">subquery_scopes</span> +</span><span id="Scope-471"><a href="#Scope-471"><span class="linenos">471</span></a> <span class="p">):</span> +</span><span id="Scope-472"><a href="#Scope-472"><span class="linenos">472</span></a> <span class="k">yield from</span> <span class="n">child_scope</span><span class="o">.</span><span class="n">traverse</span><span class="p">()</span> +</span><span id="Scope-473"><a href="#Scope-473"><span class="linenos">473</span></a> <span class="k">yield</span> <span class="bp">self</span> +</span><span id="Scope-474"><a href="#Scope-474"><span class="linenos">474</span></a> +</span><span id="Scope-475"><a href="#Scope-475"><span class="linenos">475</span></a> <span class="k">def</span> <span class="nf">ref_count</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> +</span><span id="Scope-476"><a href="#Scope-476"><span class="linenos">476</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="Scope-477"><a href="#Scope-477"><span class="linenos">477</span></a><span class="sd"> Count the number of times each scope in this tree is referenced.</span> +</span><span id="Scope-478"><a href="#Scope-478"><span class="linenos">478</span></a> +</span><span id="Scope-479"><a href="#Scope-479"><span class="linenos">479</span></a><span class="sd"> Returns:</span> +</span><span id="Scope-480"><a href="#Scope-480"><span class="linenos">480</span></a><span class="sd"> dict[int, int]: Mapping of Scope instance ID to reference count</span> +</span><span id="Scope-481"><a href="#Scope-481"><span class="linenos">481</span></a><span class="sd"> """</span> +</span><span id="Scope-482"><a href="#Scope-482"><span class="linenos">482</span></a> <span class="n">scope_ref_count</span> <span class="o">=</span> <span class="n">defaultdict</span><span class="p">(</span><span class="k">lambda</span><span class="p">:</span> <span class="mi">0</span><span class="p">)</span> +</span><span id="Scope-483"><a href="#Scope-483"><span class="linenos">483</span></a> +</span><span id="Scope-484"><a href="#Scope-484"><span class="linenos">484</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">traverse</span><span class="p">():</span> +</span><span id="Scope-485"><a href="#Scope-485"><span class="linenos">485</span></a> <span class="k">for</span> <span class="n">_</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> +</span><span id="Scope-486"><a href="#Scope-486"><span class="linenos">486</span></a> <span class="n">scope_ref_count</span><span class="p">[</span><span class="nb">id</span><span class="p">(</span><span class="n">source</span><span class="p">)]</span> <span class="o">+=</span> <span class="mi">1</span> +</span><span id="Scope-487"><a href="#Scope-487"><span class="linenos">487</span></a> +</span><span id="Scope-488"><a href="#Scope-488"><span class="linenos">488</span></a> <span class="k">return</span> <span class="n">scope_ref_count</span> </span></pre></div> @@ -2399,10 +2450,10 @@ table only becomes a selected source if it's included in a FROM or JOIN clause.< </div> <a class="headerlink" href="#Scope.rename_source"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="Scope.rename_source-441"><a href="#Scope.rename_source-441"><span class="linenos">441</span></a> <span class="k">def</span> <span class="nf">rename_source</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">old_name</span><span class="p">,</span> <span class="n">new_name</span><span class="p">):</span> -</span><span id="Scope.rename_source-442"><a href="#Scope.rename_source-442"><span class="linenos">442</span></a><span class="w"> </span><span class="sd">"""Rename a source in this scope"""</span> -</span><span id="Scope.rename_source-443"><a href="#Scope.rename_source-443"><span class="linenos">443</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">old_name</span> <span class="ow">or</span> <span class="s2">""</span><span class="p">,</span> <span class="p">[])</span> -</span><span id="Scope.rename_source-444"><a href="#Scope.rename_source-444"><span class="linenos">444</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">new_name</span><span class="p">]</span> <span class="o">=</span> <span class="n">columns</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="Scope.rename_source-444"><a href="#Scope.rename_source-444"><span class="linenos">444</span></a> <span class="k">def</span> <span class="nf">rename_source</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">old_name</span><span class="p">,</span> <span class="n">new_name</span><span class="p">):</span> +</span><span id="Scope.rename_source-445"><a href="#Scope.rename_source-445"><span class="linenos">445</span></a><span class="w"> </span><span class="sd">"""Rename a source in this scope"""</span> +</span><span id="Scope.rename_source-446"><a href="#Scope.rename_source-446"><span class="linenos">446</span></a> <span class="n">columns</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">old_name</span> <span class="ow">or</span> <span class="s2">""</span><span class="p">,</span> <span class="p">[])</span> +</span><span id="Scope.rename_source-447"><a href="#Scope.rename_source-447"><span class="linenos">447</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">new_name</span><span class="p">]</span> <span class="o">=</span> <span class="n">columns</span> </span></pre></div> @@ -2422,10 +2473,10 @@ table only becomes a selected source if it's included in a FROM or JOIN clause.< </div> <a class="headerlink" href="#Scope.add_source"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="Scope.add_source-446"><a href="#Scope.add_source-446"><span class="linenos">446</span></a> <span class="k">def</span> <span class="nf">add_source</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">source</span><span class="p">):</span> -</span><span id="Scope.add_source-447"><a href="#Scope.add_source-447"><span class="linenos">447</span></a><span class="w"> </span><span class="sd">"""Add a source to this scope"""</span> -</span><span id="Scope.add_source-448"><a href="#Scope.add_source-448"><span class="linenos">448</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">source</span> -</span><span id="Scope.add_source-449"><a href="#Scope.add_source-449"><span class="linenos">449</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="Scope.add_source-449"><a href="#Scope.add_source-449"><span class="linenos">449</span></a> <span class="k">def</span> <span class="nf">add_source</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">source</span><span class="p">):</span> +</span><span id="Scope.add_source-450"><a href="#Scope.add_source-450"><span class="linenos">450</span></a><span class="w"> </span><span class="sd">"""Add a source to this scope"""</span> +</span><span id="Scope.add_source-451"><a href="#Scope.add_source-451"><span class="linenos">451</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">source</span> +</span><span id="Scope.add_source-452"><a href="#Scope.add_source-452"><span class="linenos">452</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> </span></pre></div> @@ -2445,10 +2496,10 @@ table only becomes a selected source if it's included in a FROM or JOIN clause.< </div> <a class="headerlink" href="#Scope.remove_source"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="Scope.remove_source-451"><a href="#Scope.remove_source-451"><span class="linenos">451</span></a> <span class="k">def</span> <span class="nf">remove_source</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">):</span> -</span><span id="Scope.remove_source-452"><a href="#Scope.remove_source-452"><span class="linenos">452</span></a><span class="w"> </span><span class="sd">"""Remove a source from this scope"""</span> -</span><span id="Scope.remove_source-453"><a href="#Scope.remove_source-453"><span class="linenos">453</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> -</span><span id="Scope.remove_source-454"><a href="#Scope.remove_source-454"><span class="linenos">454</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="Scope.remove_source-454"><a href="#Scope.remove_source-454"><span class="linenos">454</span></a> <span class="k">def</span> <span class="nf">remove_source</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">):</span> +</span><span id="Scope.remove_source-455"><a href="#Scope.remove_source-455"><span class="linenos">455</span></a><span class="w"> </span><span class="sd">"""Remove a source from this scope"""</span> +</span><span id="Scope.remove_source-456"><a href="#Scope.remove_source-456"><span class="linenos">456</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">sources</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="kc">None</span><span class="p">)</span> +</span><span id="Scope.remove_source-457"><a href="#Scope.remove_source-457"><span class="linenos">457</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">clear_cache</span><span class="p">()</span> </span></pre></div> @@ -2468,18 +2519,18 @@ table only becomes a selected source if it's included in a FROM or JOIN clause.< </div> <a class="headerlink" href="#Scope.traverse"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="Scope.traverse-459"><a href="#Scope.traverse-459"><span class="linenos">459</span></a> <span class="k">def</span> <span class="nf">traverse</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> -</span><span id="Scope.traverse-460"><a href="#Scope.traverse-460"><span class="linenos">460</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="Scope.traverse-461"><a href="#Scope.traverse-461"><span class="linenos">461</span></a><span class="sd"> Traverse the scope tree from this node.</span> -</span><span id="Scope.traverse-462"><a href="#Scope.traverse-462"><span class="linenos">462</span></a> -</span><span id="Scope.traverse-463"><a href="#Scope.traverse-463"><span class="linenos">463</span></a><span class="sd"> Yields:</span> -</span><span id="Scope.traverse-464"><a href="#Scope.traverse-464"><span class="linenos">464</span></a><span class="sd"> Scope: scope instances in depth-first-search post-order</span> -</span><span id="Scope.traverse-465"><a href="#Scope.traverse-465"><span class="linenos">465</span></a><span class="sd"> """</span> -</span><span id="Scope.traverse-466"><a href="#Scope.traverse-466"><span class="linenos">466</span></a> <span class="k">for</span> <span class="n">child_scope</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span> -</span><span id="Scope.traverse-467"><a href="#Scope.traverse-467"><span class="linenos">467</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">cte_scopes</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">union_scopes</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">table_scopes</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">subquery_scopes</span> -</span><span id="Scope.traverse-468"><a href="#Scope.traverse-468"><span class="linenos">468</span></a> <span class="p">):</span> -</span><span id="Scope.traverse-469"><a href="#Scope.traverse-469"><span class="linenos">469</span></a> <span class="k">yield from</span> <span class="n">child_scope</span><span class="o">.</span><span class="n">traverse</span><span class="p">()</span> -</span><span id="Scope.traverse-470"><a href="#Scope.traverse-470"><span class="linenos">470</span></a> <span class="k">yield</span> <span class="bp">self</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="Scope.traverse-462"><a href="#Scope.traverse-462"><span class="linenos">462</span></a> <span class="k">def</span> <span class="nf">traverse</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> +</span><span id="Scope.traverse-463"><a href="#Scope.traverse-463"><span class="linenos">463</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="Scope.traverse-464"><a href="#Scope.traverse-464"><span class="linenos">464</span></a><span class="sd"> Traverse the scope tree from this node.</span> +</span><span id="Scope.traverse-465"><a href="#Scope.traverse-465"><span class="linenos">465</span></a> +</span><span id="Scope.traverse-466"><a href="#Scope.traverse-466"><span class="linenos">466</span></a><span class="sd"> Yields:</span> +</span><span id="Scope.traverse-467"><a href="#Scope.traverse-467"><span class="linenos">467</span></a><span class="sd"> Scope: scope instances in depth-first-search post-order</span> +</span><span id="Scope.traverse-468"><a href="#Scope.traverse-468"><span class="linenos">468</span></a><span class="sd"> """</span> +</span><span id="Scope.traverse-469"><a href="#Scope.traverse-469"><span class="linenos">469</span></a> <span class="k">for</span> <span class="n">child_scope</span> <span class="ow">in</span> <span class="n">itertools</span><span class="o">.</span><span class="n">chain</span><span class="p">(</span> +</span><span id="Scope.traverse-470"><a href="#Scope.traverse-470"><span class="linenos">470</span></a> <span class="bp">self</span><span class="o">.</span><span class="n">cte_scopes</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">union_scopes</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">table_scopes</span><span class="p">,</span> <span class="bp">self</span><span class="o">.</span><span class="n">subquery_scopes</span> +</span><span id="Scope.traverse-471"><a href="#Scope.traverse-471"><span class="linenos">471</span></a> <span class="p">):</span> +</span><span id="Scope.traverse-472"><a href="#Scope.traverse-472"><span class="linenos">472</span></a> <span class="k">yield from</span> <span class="n">child_scope</span><span class="o">.</span><span class="n">traverse</span><span class="p">()</span> +</span><span id="Scope.traverse-473"><a href="#Scope.traverse-473"><span class="linenos">473</span></a> <span class="k">yield</span> <span class="bp">self</span> </span></pre></div> @@ -2505,20 +2556,20 @@ table only becomes a selected source if it's included in a FROM or JOIN clause.< </div> <a class="headerlink" href="#Scope.ref_count"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="Scope.ref_count-472"><a href="#Scope.ref_count-472"><span class="linenos">472</span></a> <span class="k">def</span> <span class="nf">ref_count</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> -</span><span id="Scope.ref_count-473"><a href="#Scope.ref_count-473"><span class="linenos">473</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="Scope.ref_count-474"><a href="#Scope.ref_count-474"><span class="linenos">474</span></a><span class="sd"> Count the number of times each scope in this tree is referenced.</span> -</span><span id="Scope.ref_count-475"><a href="#Scope.ref_count-475"><span class="linenos">475</span></a> -</span><span id="Scope.ref_count-476"><a href="#Scope.ref_count-476"><span class="linenos">476</span></a><span class="sd"> Returns:</span> -</span><span id="Scope.ref_count-477"><a href="#Scope.ref_count-477"><span class="linenos">477</span></a><span class="sd"> dict[int, int]: Mapping of Scope instance ID to reference count</span> -</span><span id="Scope.ref_count-478"><a href="#Scope.ref_count-478"><span class="linenos">478</span></a><span class="sd"> """</span> -</span><span id="Scope.ref_count-479"><a href="#Scope.ref_count-479"><span class="linenos">479</span></a> <span class="n">scope_ref_count</span> <span class="o">=</span> <span class="n">defaultdict</span><span class="p">(</span><span class="k">lambda</span><span class="p">:</span> <span class="mi">0</span><span class="p">)</span> -</span><span id="Scope.ref_count-480"><a href="#Scope.ref_count-480"><span class="linenos">480</span></a> -</span><span id="Scope.ref_count-481"><a href="#Scope.ref_count-481"><span class="linenos">481</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">traverse</span><span class="p">():</span> -</span><span id="Scope.ref_count-482"><a href="#Scope.ref_count-482"><span class="linenos">482</span></a> <span class="k">for</span> <span class="n">_</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> -</span><span id="Scope.ref_count-483"><a href="#Scope.ref_count-483"><span class="linenos">483</span></a> <span class="n">scope_ref_count</span><span class="p">[</span><span class="nb">id</span><span class="p">(</span><span class="n">source</span><span class="p">)]</span> <span class="o">+=</span> <span class="mi">1</span> -</span><span id="Scope.ref_count-484"><a href="#Scope.ref_count-484"><span class="linenos">484</span></a> -</span><span id="Scope.ref_count-485"><a href="#Scope.ref_count-485"><span class="linenos">485</span></a> <span class="k">return</span> <span class="n">scope_ref_count</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="Scope.ref_count-475"><a href="#Scope.ref_count-475"><span class="linenos">475</span></a> <span class="k">def</span> <span class="nf">ref_count</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> +</span><span id="Scope.ref_count-476"><a href="#Scope.ref_count-476"><span class="linenos">476</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="Scope.ref_count-477"><a href="#Scope.ref_count-477"><span class="linenos">477</span></a><span class="sd"> Count the number of times each scope in this tree is referenced.</span> +</span><span id="Scope.ref_count-478"><a href="#Scope.ref_count-478"><span class="linenos">478</span></a> +</span><span id="Scope.ref_count-479"><a href="#Scope.ref_count-479"><span class="linenos">479</span></a><span class="sd"> Returns:</span> +</span><span id="Scope.ref_count-480"><a href="#Scope.ref_count-480"><span class="linenos">480</span></a><span class="sd"> dict[int, int]: Mapping of Scope instance ID to reference count</span> +</span><span id="Scope.ref_count-481"><a href="#Scope.ref_count-481"><span class="linenos">481</span></a><span class="sd"> """</span> +</span><span id="Scope.ref_count-482"><a href="#Scope.ref_count-482"><span class="linenos">482</span></a> <span class="n">scope_ref_count</span> <span class="o">=</span> <span class="n">defaultdict</span><span class="p">(</span><span class="k">lambda</span><span class="p">:</span> <span class="mi">0</span><span class="p">)</span> +</span><span id="Scope.ref_count-483"><a href="#Scope.ref_count-483"><span class="linenos">483</span></a> +</span><span id="Scope.ref_count-484"><a href="#Scope.ref_count-484"><span class="linenos">484</span></a> <span class="k">for</span> <span class="n">scope</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">traverse</span><span class="p">():</span> +</span><span id="Scope.ref_count-485"><a href="#Scope.ref_count-485"><span class="linenos">485</span></a> <span class="k">for</span> <span class="n">_</span><span class="p">,</span> <span class="n">source</span> <span class="ow">in</span> <span class="n">scope</span><span class="o">.</span><span class="n">selected_sources</span><span class="o">.</span><span class="n">values</span><span class="p">():</span> +</span><span id="Scope.ref_count-486"><a href="#Scope.ref_count-486"><span class="linenos">486</span></a> <span class="n">scope_ref_count</span><span class="p">[</span><span class="nb">id</span><span class="p">(</span><span class="n">source</span><span class="p">)]</span> <span class="o">+=</span> <span class="mi">1</span> +</span><span id="Scope.ref_count-487"><a href="#Scope.ref_count-487"><span class="linenos">487</span></a> +</span><span id="Scope.ref_count-488"><a href="#Scope.ref_count-488"><span class="linenos">488</span></a> <span class="k">return</span> <span class="n">scope_ref_count</span> </span></pre></div> @@ -2545,38 +2596,41 @@ table only becomes a selected source if it's included in a FROM or JOIN clause.< </div> <a class="headerlink" href="#traverse_scope"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="traverse_scope-488"><a href="#traverse_scope-488"><span class="linenos">488</span></a><span class="k">def</span> <span class="nf">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="n">Scope</span><span class="p">]:</span> -</span><span id="traverse_scope-489"><a href="#traverse_scope-489"><span class="linenos">489</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="traverse_scope-490"><a href="#traverse_scope-490"><span class="linenos">490</span></a><span class="sd"> Traverse an expression by it's "scopes".</span> -</span><span id="traverse_scope-491"><a href="#traverse_scope-491"><span class="linenos">491</span></a> -</span><span id="traverse_scope-492"><a href="#traverse_scope-492"><span class="linenos">492</span></a><span class="sd"> "Scope" represents the current context of a Select statement.</span> -</span><span id="traverse_scope-493"><a href="#traverse_scope-493"><span class="linenos">493</span></a> -</span><span id="traverse_scope-494"><a href="#traverse_scope-494"><span class="linenos">494</span></a><span class="sd"> This is helpful for optimizing queries, where we need more information than</span> -</span><span id="traverse_scope-495"><a href="#traverse_scope-495"><span class="linenos">495</span></a><span class="sd"> the expression tree itself. For example, we might care about the source</span> -</span><span id="traverse_scope-496"><a href="#traverse_scope-496"><span class="linenos">496</span></a><span class="sd"> names within a subquery. Returns a list because a generator could result in</span> -</span><span id="traverse_scope-497"><a href="#traverse_scope-497"><span class="linenos">497</span></a><span class="sd"> incomplete properties which is confusing.</span> -</span><span id="traverse_scope-498"><a href="#traverse_scope-498"><span class="linenos">498</span></a> -</span><span id="traverse_scope-499"><a href="#traverse_scope-499"><span class="linenos">499</span></a><span class="sd"> Examples:</span> -</span><span id="traverse_scope-500"><a href="#traverse_scope-500"><span class="linenos">500</span></a><span class="sd"> >>> import sqlglot</span> -</span><span id="traverse_scope-501"><a href="#traverse_scope-501"><span class="linenos">501</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT a FROM (SELECT a FROM x) AS y")</span> -</span><span id="traverse_scope-502"><a href="#traverse_scope-502"><span class="linenos">502</span></a><span class="sd"> >>> scopes = traverse_scope(expression)</span> -</span><span id="traverse_scope-503"><a href="#traverse_scope-503"><span class="linenos">503</span></a><span class="sd"> >>> scopes[0].expression.sql(), list(scopes[0].sources)</span> -</span><span id="traverse_scope-504"><a href="#traverse_scope-504"><span class="linenos">504</span></a><span class="sd"> ('SELECT a FROM x', ['x'])</span> -</span><span id="traverse_scope-505"><a href="#traverse_scope-505"><span class="linenos">505</span></a><span class="sd"> >>> scopes[1].expression.sql(), list(scopes[1].sources)</span> -</span><span id="traverse_scope-506"><a href="#traverse_scope-506"><span class="linenos">506</span></a><span class="sd"> ('SELECT a FROM (SELECT a FROM x) AS y', ['y'])</span> -</span><span id="traverse_scope-507"><a href="#traverse_scope-507"><span class="linenos">507</span></a> -</span><span id="traverse_scope-508"><a href="#traverse_scope-508"><span class="linenos">508</span></a><span class="sd"> Args:</span> -</span><span id="traverse_scope-509"><a href="#traverse_scope-509"><span class="linenos">509</span></a><span class="sd"> expression (exp.Expression): expression to traverse</span> -</span><span id="traverse_scope-510"><a href="#traverse_scope-510"><span class="linenos">510</span></a><span class="sd"> Returns:</span> -</span><span id="traverse_scope-511"><a href="#traverse_scope-511"><span class="linenos">511</span></a><span class="sd"> list[Scope]: scope instances</span> -</span><span id="traverse_scope-512"><a href="#traverse_scope-512"><span class="linenos">512</span></a><span class="sd"> """</span> -</span><span id="traverse_scope-513"><a href="#traverse_scope-513"><span class="linenos">513</span></a> <span class="k">if</span> <span class="ow">not</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Unionable</span><span class="p">):</span> -</span><span id="traverse_scope-514"><a href="#traverse_scope-514"><span class="linenos">514</span></a> <span class="k">return</span> <span class="p">[]</span> -</span><span id="traverse_scope-515"><a href="#traverse_scope-515"><span class="linenos">515</span></a> <span class="k">return</span> <span class="nb">list</span><span class="p">(</span><span class="n">_traverse_scope</span><span class="p">(</span><span class="n">Scope</span><span class="p">(</span><span class="n">expression</span><span class="p">)))</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="traverse_scope-491"><a href="#traverse_scope-491"><span class="linenos">491</span></a><span class="k">def</span> <span class="nf">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">List</span><span class="p">[</span><span class="n">Scope</span><span class="p">]:</span> +</span><span id="traverse_scope-492"><a href="#traverse_scope-492"><span class="linenos">492</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="traverse_scope-493"><a href="#traverse_scope-493"><span class="linenos">493</span></a><span class="sd"> Traverse an expression by its "scopes".</span> +</span><span id="traverse_scope-494"><a href="#traverse_scope-494"><span class="linenos">494</span></a> +</span><span id="traverse_scope-495"><a href="#traverse_scope-495"><span class="linenos">495</span></a><span class="sd"> "Scope" represents the current context of a Select statement.</span> +</span><span id="traverse_scope-496"><a href="#traverse_scope-496"><span class="linenos">496</span></a> +</span><span id="traverse_scope-497"><a href="#traverse_scope-497"><span class="linenos">497</span></a><span class="sd"> This is helpful for optimizing queries, where we need more information than</span> +</span><span id="traverse_scope-498"><a href="#traverse_scope-498"><span class="linenos">498</span></a><span class="sd"> the expression tree itself. For example, we might care about the source</span> +</span><span id="traverse_scope-499"><a href="#traverse_scope-499"><span class="linenos">499</span></a><span class="sd"> names within a subquery. Returns a list because a generator could result in</span> +</span><span id="traverse_scope-500"><a href="#traverse_scope-500"><span class="linenos">500</span></a><span class="sd"> incomplete properties which is confusing.</span> +</span><span id="traverse_scope-501"><a href="#traverse_scope-501"><span class="linenos">501</span></a> +</span><span id="traverse_scope-502"><a href="#traverse_scope-502"><span class="linenos">502</span></a><span class="sd"> Examples:</span> +</span><span id="traverse_scope-503"><a href="#traverse_scope-503"><span class="linenos">503</span></a><span class="sd"> >>> import sqlglot</span> +</span><span id="traverse_scope-504"><a href="#traverse_scope-504"><span class="linenos">504</span></a><span class="sd"> >>> expression = sqlglot.parse_one("SELECT a FROM (SELECT a FROM x) AS y")</span> +</span><span id="traverse_scope-505"><a href="#traverse_scope-505"><span class="linenos">505</span></a><span class="sd"> >>> scopes = traverse_scope(expression)</span> +</span><span id="traverse_scope-506"><a href="#traverse_scope-506"><span class="linenos">506</span></a><span class="sd"> >>> scopes[0].expression.sql(), list(scopes[0].sources)</span> +</span><span id="traverse_scope-507"><a href="#traverse_scope-507"><span class="linenos">507</span></a><span class="sd"> ('SELECT a FROM x', ['x'])</span> +</span><span id="traverse_scope-508"><a href="#traverse_scope-508"><span class="linenos">508</span></a><span class="sd"> >>> scopes[1].expression.sql(), list(scopes[1].sources)</span> +</span><span id="traverse_scope-509"><a href="#traverse_scope-509"><span class="linenos">509</span></a><span class="sd"> ('SELECT a FROM (SELECT a FROM x) AS y', ['y'])</span> +</span><span id="traverse_scope-510"><a href="#traverse_scope-510"><span class="linenos">510</span></a> +</span><span id="traverse_scope-511"><a href="#traverse_scope-511"><span class="linenos">511</span></a><span class="sd"> Args:</span> +</span><span id="traverse_scope-512"><a href="#traverse_scope-512"><span class="linenos">512</span></a><span class="sd"> expression (exp.Expression): expression to traverse</span> +</span><span id="traverse_scope-513"><a href="#traverse_scope-513"><span class="linenos">513</span></a><span class="sd"> Returns:</span> +</span><span id="traverse_scope-514"><a href="#traverse_scope-514"><span class="linenos">514</span></a><span class="sd"> list[Scope]: scope instances</span> +</span><span id="traverse_scope-515"><a href="#traverse_scope-515"><span class="linenos">515</span></a><span class="sd"> """</span> +</span><span id="traverse_scope-516"><a href="#traverse_scope-516"><span class="linenos">516</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">Unionable</span><span class="p">)</span> <span class="ow">or</span> <span class="p">(</span> +</span><span id="traverse_scope-517"><a href="#traverse_scope-517"><span class="linenos">517</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">DDL</span><span class="p">)</span> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">expression</span><span class="o">.</span><span class="n">expression</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">)</span> +</span><span id="traverse_scope-518"><a href="#traverse_scope-518"><span class="linenos">518</span></a> <span class="p">):</span> +</span><span id="traverse_scope-519"><a href="#traverse_scope-519"><span class="linenos">519</span></a> <span class="k">return</span> <span class="nb">list</span><span class="p">(</span><span class="n">_traverse_scope</span><span class="p">(</span><span class="n">Scope</span><span class="p">(</span><span class="n">expression</span><span class="p">)))</span> +</span><span id="traverse_scope-520"><a href="#traverse_scope-520"><span class="linenos">520</span></a> +</span><span id="traverse_scope-521"><a href="#traverse_scope-521"><span class="linenos">521</span></a> <span class="k">return</span> <span class="p">[]</span> </span></pre></div> - <div class="docstring"><p>Traverse an expression by it's "scopes".</p> + <div class="docstring"><p>Traverse an expression by its "scopes".</p> <p>"Scope" represents the current context of a Select statement.</p> @@ -2626,19 +2680,19 @@ incomplete properties which is confusing.</p> </div> <a class="headerlink" href="#build_scope"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="build_scope-518"><a href="#build_scope-518"><span class="linenos">518</span></a><span class="k">def</span> <span class="nf">build_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">Scope</span><span class="p">]:</span> -</span><span id="build_scope-519"><a href="#build_scope-519"><span class="linenos">519</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="build_scope-520"><a href="#build_scope-520"><span class="linenos">520</span></a><span class="sd"> Build a scope tree.</span> -</span><span id="build_scope-521"><a href="#build_scope-521"><span class="linenos">521</span></a> -</span><span id="build_scope-522"><a href="#build_scope-522"><span class="linenos">522</span></a><span class="sd"> Args:</span> -</span><span id="build_scope-523"><a href="#build_scope-523"><span class="linenos">523</span></a><span class="sd"> expression (exp.Expression): expression to build the scope tree for</span> -</span><span id="build_scope-524"><a href="#build_scope-524"><span class="linenos">524</span></a><span class="sd"> Returns:</span> -</span><span id="build_scope-525"><a href="#build_scope-525"><span class="linenos">525</span></a><span class="sd"> Scope: root scope</span> -</span><span id="build_scope-526"><a href="#build_scope-526"><span class="linenos">526</span></a><span class="sd"> """</span> -</span><span id="build_scope-527"><a href="#build_scope-527"><span class="linenos">527</span></a> <span class="n">scopes</span> <span class="o">=</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> -</span><span id="build_scope-528"><a href="#build_scope-528"><span class="linenos">528</span></a> <span class="k">if</span> <span class="n">scopes</span><span class="p">:</span> -</span><span id="build_scope-529"><a href="#build_scope-529"><span class="linenos">529</span></a> <span class="k">return</span> <span class="n">scopes</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span> -</span><span id="build_scope-530"><a href="#build_scope-530"><span class="linenos">530</span></a> <span class="k">return</span> <span class="kc">None</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="build_scope-524"><a href="#build_scope-524"><span class="linenos">524</span></a><span class="k">def</span> <span class="nf">build_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">:</span> <span class="n">exp</span><span class="o">.</span><span class="n">Expression</span><span class="p">)</span> <span class="o">-></span> <span class="n">t</span><span class="o">.</span><span class="n">Optional</span><span class="p">[</span><span class="n">Scope</span><span class="p">]:</span> +</span><span id="build_scope-525"><a href="#build_scope-525"><span class="linenos">525</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="build_scope-526"><a href="#build_scope-526"><span class="linenos">526</span></a><span class="sd"> Build a scope tree.</span> +</span><span id="build_scope-527"><a href="#build_scope-527"><span class="linenos">527</span></a> +</span><span id="build_scope-528"><a href="#build_scope-528"><span class="linenos">528</span></a><span class="sd"> Args:</span> +</span><span id="build_scope-529"><a href="#build_scope-529"><span class="linenos">529</span></a><span class="sd"> expression (exp.Expression): expression to build the scope tree for</span> +</span><span id="build_scope-530"><a href="#build_scope-530"><span class="linenos">530</span></a><span class="sd"> Returns:</span> +</span><span id="build_scope-531"><a href="#build_scope-531"><span class="linenos">531</span></a><span class="sd"> Scope: root scope</span> +</span><span id="build_scope-532"><a href="#build_scope-532"><span class="linenos">532</span></a><span class="sd"> """</span> +</span><span id="build_scope-533"><a href="#build_scope-533"><span class="linenos">533</span></a> <span class="n">scopes</span> <span class="o">=</span> <span class="n">traverse_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">)</span> +</span><span id="build_scope-534"><a href="#build_scope-534"><span class="linenos">534</span></a> <span class="k">if</span> <span class="n">scopes</span><span class="p">:</span> +</span><span id="build_scope-535"><a href="#build_scope-535"><span class="linenos">535</span></a> <span class="k">return</span> <span class="n">scopes</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span> +</span><span id="build_scope-536"><a href="#build_scope-536"><span class="linenos">536</span></a> <span class="k">return</span> <span class="kc">None</span> </span></pre></div> @@ -2670,47 +2724,47 @@ incomplete properties which is confusing.</p> </div> <a class="headerlink" href="#walk_in_scope"></a> - <div class="pdoc-code codehilite"><pre><span></span><span id="walk_in_scope-715"><a href="#walk_in_scope-715"><span class="linenos">715</span></a><span class="k">def</span> <span class="nf">walk_in_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">bfs</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> -</span><span id="walk_in_scope-716"><a href="#walk_in_scope-716"><span class="linenos">716</span></a><span class="w"> </span><span class="sd">"""</span> -</span><span id="walk_in_scope-717"><a href="#walk_in_scope-717"><span class="linenos">717</span></a><span class="sd"> Returns a generator object which visits all nodes in the syntrax tree, stopping at</span> -</span><span id="walk_in_scope-718"><a href="#walk_in_scope-718"><span class="linenos">718</span></a><span class="sd"> nodes that start child scopes.</span> -</span><span id="walk_in_scope-719"><a href="#walk_in_scope-719"><span class="linenos">719</span></a> -</span><span id="walk_in_scope-720"><a href="#walk_in_scope-720"><span class="linenos">720</span></a><span class="sd"> Args:</span> -</span><span id="walk_in_scope-721"><a href="#walk_in_scope-721"><span class="linenos">721</span></a><span class="sd"> expression (exp.Expression):</span> -</span><span id="walk_in_scope-722"><a href="#walk_in_scope-722"><span class="linenos">722</span></a><span class="sd"> bfs (bool): if set to True the BFS traversal order will be applied,</span> -</span><span id="walk_in_scope-723"><a href="#walk_in_scope-723"><span class="linenos">723</span></a><span class="sd"> otherwise the DFS traversal will be used instead.</span> -</span><span id="walk_in_scope-724"><a href="#walk_in_scope-724"><span class="linenos">724</span></a> -</span><span id="walk_in_scope-725"><a href="#walk_in_scope-725"><span class="linenos">725</span></a><span class="sd"> Yields:</span> -</span><span id="walk_in_scope-726"><a href="#walk_in_scope-726"><span class="linenos">726</span></a><span class="sd"> tuple[exp.Expression, Optional[exp.Expression], str]: node, parent, arg key</span> -</span><span id="walk_in_scope-727"><a href="#walk_in_scope-727"><span class="linenos">727</span></a><span class="sd"> """</span> -</span><span id="walk_in_scope-728"><a href="#walk_in_scope-728"><span class="linenos">728</span></a> <span class="c1"># We'll use this variable to pass state into the dfs generator.</span> -</span><span id="walk_in_scope-729"><a href="#walk_in_scope-729"><span class="linenos">729</span></a> <span class="c1"># Whenever we set it to True, we exclude a subtree from traversal.</span> -</span><span id="walk_in_scope-730"><a href="#walk_in_scope-730"><span class="linenos">730</span></a> <span class="n">prune</span> <span class="o">=</span> <span class="kc">False</span> -</span><span id="walk_in_scope-731"><a href="#walk_in_scope-731"><span class="linenos">731</span></a> -</span><span id="walk_in_scope-732"><a href="#walk_in_scope-732"><span class="linenos">732</span></a> <span class="k">for</span> <span class="n">node</span><span class="p">,</span> <span class="n">parent</span><span class="p">,</span> <span class="n">key</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">walk</span><span class="p">(</span><span class="n">bfs</span><span class="o">=</span><span class="n">bfs</span><span class="p">,</span> <span class="n">prune</span><span class="o">=</span><span class="k">lambda</span> <span class="o">*</span><span class="n">_</span><span class="p">:</span> <span class="n">prune</span><span class="p">):</span> -</span><span id="walk_in_scope-733"><a href="#walk_in_scope-733"><span class="linenos">733</span></a> <span class="n">prune</span> <span class="o">=</span> <span class="kc">False</span> -</span><span id="walk_in_scope-734"><a href="#walk_in_scope-734"><span class="linenos">734</span></a> -</span><span id="walk_in_scope-735"><a href="#walk_in_scope-735"><span class="linenos">735</span></a> <span class="k">yield</span> <span class="n">node</span><span class="p">,</span> <span class="n">parent</span><span class="p">,</span> <span class="n">key</span> -</span><span id="walk_in_scope-736"><a href="#walk_in_scope-736"><span class="linenos">736</span></a> -</span><span id="walk_in_scope-737"><a href="#walk_in_scope-737"><span class="linenos">737</span></a> <span class="k">if</span> <span class="n">node</span> <span class="ow">is</span> <span class="n">expression</span><span class="p">:</span> -</span><span id="walk_in_scope-738"><a href="#walk_in_scope-738"><span class="linenos">738</span></a> <span class="k">continue</span> -</span><span id="walk_in_scope-739"><a href="#walk_in_scope-739"><span class="linenos">739</span></a> <span class="k">if</span> <span class="p">(</span> -</span><span id="walk_in_scope-740"><a href="#walk_in_scope-740"><span class="linenos">740</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">CTE</span><span class="p">)</span> -</span><span id="walk_in_scope-741"><a href="#walk_in_scope-741"><span class="linenos">741</span></a> <span class="ow">or</span> <span class="p">(</span> -</span><span id="walk_in_scope-742"><a href="#walk_in_scope-742"><span class="linenos">742</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">)</span> -</span><span id="walk_in_scope-743"><a href="#walk_in_scope-743"><span class="linenos">743</span></a> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">parent</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">From</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">))</span> -</span><span id="walk_in_scope-744"><a href="#walk_in_scope-744"><span class="linenos">744</span></a> <span class="ow">and</span> <span class="n">_is_derived_table</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> -</span><span id="walk_in_scope-745"><a href="#walk_in_scope-745"><span class="linenos">745</span></a> <span class="p">)</span> -</span><span id="walk_in_scope-746"><a href="#walk_in_scope-746"><span class="linenos">746</span></a> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">)</span> -</span><span id="walk_in_scope-747"><a href="#walk_in_scope-747"><span class="linenos">747</span></a> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">)</span> -</span><span id="walk_in_scope-748"><a href="#walk_in_scope-748"><span class="linenos">748</span></a> <span class="p">):</span> -</span><span id="walk_in_scope-749"><a href="#walk_in_scope-749"><span class="linenos">749</span></a> <span class="n">prune</span> <span class="o">=</span> <span class="kc">True</span> -</span><span id="walk_in_scope-750"><a href="#walk_in_scope-750"><span class="linenos">750</span></a> -</span><span id="walk_in_scope-751"><a href="#walk_in_scope-751"><span class="linenos">751</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">)):</span> -</span><span id="walk_in_scope-752"><a href="#walk_in_scope-752"><span class="linenos">752</span></a> <span class="c1"># The following args are not actually in the inner scope, so we should visit them</span> -</span><span id="walk_in_scope-753"><a href="#walk_in_scope-753"><span class="linenos">753</span></a> <span class="k">for</span> <span class="n">key</span> <span class="ow">in</span> <span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="s2">"laterals"</span><span class="p">,</span> <span class="s2">"pivots"</span><span class="p">):</span> -</span><span id="walk_in_scope-754"><a href="#walk_in_scope-754"><span class="linenos">754</span></a> <span class="k">for</span> <span class="n">arg</span> <span class="ow">in</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">key</span><span class="p">)</span> <span class="ow">or</span> <span class="p">[]:</span> -</span><span id="walk_in_scope-755"><a href="#walk_in_scope-755"><span class="linenos">755</span></a> <span class="k">yield from</span> <span class="n">walk_in_scope</span><span class="p">(</span><span class="n">arg</span><span class="p">,</span> <span class="n">bfs</span><span class="o">=</span><span class="n">bfs</span><span class="p">)</span> + <div class="pdoc-code codehilite"><pre><span></span><span id="walk_in_scope-763"><a href="#walk_in_scope-763"><span class="linenos">763</span></a><span class="k">def</span> <span class="nf">walk_in_scope</span><span class="p">(</span><span class="n">expression</span><span class="p">,</span> <span class="n">bfs</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> +</span><span id="walk_in_scope-764"><a href="#walk_in_scope-764"><span class="linenos">764</span></a><span class="w"> </span><span class="sd">"""</span> +</span><span id="walk_in_scope-765"><a href="#walk_in_scope-765"><span class="linenos">765</span></a><span class="sd"> Returns a generator object which visits all nodes in the syntrax tree, stopping at</span> +</span><span id="walk_in_scope-766"><a href="#walk_in_scope-766"><span class="linenos">766</span></a><span class="sd"> nodes that start child scopes.</span> +</span><span id="walk_in_scope-767"><a href="#walk_in_scope-767"><span class="linenos">767</span></a> +</span><span id="walk_in_scope-768"><a href="#walk_in_scope-768"><span class="linenos">768</span></a><span class="sd"> Args:</span> +</span><span id="walk_in_scope-769"><a href="#walk_in_scope-769"><span class="linenos">769</span></a><span class="sd"> expression (exp.Expression):</span> +</span><span id="walk_in_scope-770"><a href="#walk_in_scope-770"><span class="linenos">770</span></a><span class="sd"> bfs (bool): if set to True the BFS traversal order will be applied,</span> +</span><span id="walk_in_scope-771"><a href="#walk_in_scope-771"><span class="linenos">771</span></a><span class="sd"> otherwise the DFS traversal will be used instead.</span> +</span><span id="walk_in_scope-772"><a href="#walk_in_scope-772"><span class="linenos">772</span></a> +</span><span id="walk_in_scope-773"><a href="#walk_in_scope-773"><span class="linenos">773</span></a><span class="sd"> Yields:</span> +</span><span id="walk_in_scope-774"><a href="#walk_in_scope-774"><span class="linenos">774</span></a><span class="sd"> tuple[exp.Expression, Optional[exp.Expression], str]: node, parent, arg key</span> +</span><span id="walk_in_scope-775"><a href="#walk_in_scope-775"><span class="linenos">775</span></a><span class="sd"> """</span> +</span><span id="walk_in_scope-776"><a href="#walk_in_scope-776"><span class="linenos">776</span></a> <span class="c1"># We'll use this variable to pass state into the dfs generator.</span> +</span><span id="walk_in_scope-777"><a href="#walk_in_scope-777"><span class="linenos">777</span></a> <span class="c1"># Whenever we set it to True, we exclude a subtree from traversal.</span> +</span><span id="walk_in_scope-778"><a href="#walk_in_scope-778"><span class="linenos">778</span></a> <span class="n">prune</span> <span class="o">=</span> <span class="kc">False</span> +</span><span id="walk_in_scope-779"><a href="#walk_in_scope-779"><span class="linenos">779</span></a> +</span><span id="walk_in_scope-780"><a href="#walk_in_scope-780"><span class="linenos">780</span></a> <span class="k">for</span> <span class="n">node</span><span class="p">,</span> <span class="n">parent</span><span class="p">,</span> <span class="n">key</span> <span class="ow">in</span> <span class="n">expression</span><span class="o">.</span><span class="n">walk</span><span class="p">(</span><span class="n">bfs</span><span class="o">=</span><span class="n">bfs</span><span class="p">,</span> <span class="n">prune</span><span class="o">=</span><span class="k">lambda</span> <span class="o">*</span><span class="n">_</span><span class="p">:</span> <span class="n">prune</span><span class="p">):</span> +</span><span id="walk_in_scope-781"><a href="#walk_in_scope-781"><span class="linenos">781</span></a> <span class="n">prune</span> <span class="o">=</span> <span class="kc">False</span> +</span><span id="walk_in_scope-782"><a href="#walk_in_scope-782"><span class="linenos">782</span></a> +</span><span id="walk_in_scope-783"><a href="#walk_in_scope-783"><span class="linenos">783</span></a> <span class="k">yield</span> <span class="n">node</span><span class="p">,</span> <span class="n">parent</span><span class="p">,</span> <span class="n">key</span> +</span><span id="walk_in_scope-784"><a href="#walk_in_scope-784"><span class="linenos">784</span></a> +</span><span id="walk_in_scope-785"><a href="#walk_in_scope-785"><span class="linenos">785</span></a> <span class="k">if</span> <span class="n">node</span> <span class="ow">is</span> <span class="n">expression</span><span class="p">:</span> +</span><span id="walk_in_scope-786"><a href="#walk_in_scope-786"><span class="linenos">786</span></a> <span class="k">continue</span> +</span><span id="walk_in_scope-787"><a href="#walk_in_scope-787"><span class="linenos">787</span></a> <span class="k">if</span> <span class="p">(</span> +</span><span id="walk_in_scope-788"><a href="#walk_in_scope-788"><span class="linenos">788</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">CTE</span><span class="p">)</span> +</span><span id="walk_in_scope-789"><a href="#walk_in_scope-789"><span class="linenos">789</span></a> <span class="ow">or</span> <span class="p">(</span> +</span><span id="walk_in_scope-790"><a href="#walk_in_scope-790"><span class="linenos">790</span></a> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">)</span> +</span><span id="walk_in_scope-791"><a href="#walk_in_scope-791"><span class="linenos">791</span></a> <span class="ow">and</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">parent</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">From</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Join</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">))</span> +</span><span id="walk_in_scope-792"><a href="#walk_in_scope-792"><span class="linenos">792</span></a> <span class="ow">and</span> <span class="n">_is_derived_table</span><span class="p">(</span><span class="n">node</span><span class="p">)</span> +</span><span id="walk_in_scope-793"><a href="#walk_in_scope-793"><span class="linenos">793</span></a> <span class="p">)</span> +</span><span id="walk_in_scope-794"><a href="#walk_in_scope-794"><span class="linenos">794</span></a> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">)</span> +</span><span id="walk_in_scope-795"><a href="#walk_in_scope-795"><span class="linenos">795</span></a> <span class="ow">or</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">Subqueryable</span><span class="p">)</span> +</span><span id="walk_in_scope-796"><a href="#walk_in_scope-796"><span class="linenos">796</span></a> <span class="p">):</span> +</span><span id="walk_in_scope-797"><a href="#walk_in_scope-797"><span class="linenos">797</span></a> <span class="n">prune</span> <span class="o">=</span> <span class="kc">True</span> +</span><span id="walk_in_scope-798"><a href="#walk_in_scope-798"><span class="linenos">798</span></a> +</span><span id="walk_in_scope-799"><a href="#walk_in_scope-799"><span class="linenos">799</span></a> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">node</span><span class="p">,</span> <span class="p">(</span><span class="n">exp</span><span class="o">.</span><span class="n">Subquery</span><span class="p">,</span> <span class="n">exp</span><span class="o">.</span><span class="n">UDTF</span><span class="p">)):</span> +</span><span id="walk_in_scope-800"><a href="#walk_in_scope-800"><span class="linenos">800</span></a> <span class="c1"># The following args are not actually in the inner scope, so we should visit them</span> +</span><span id="walk_in_scope-801"><a href="#walk_in_scope-801"><span class="linenos">801</span></a> <span class="k">for</span> <span class="n">key</span> <span class="ow">in</span> <span class="p">(</span><span class="s2">"joins"</span><span class="p">,</span> <span class="s2">"laterals"</span><span class="p">,</span> <span class="s2">"pivots"</span><span class="p">):</span> +</span><span id="walk_in_scope-802"><a href="#walk_in_scope-802"><span class="linenos">802</span></a> <span class="k">for</span> <span class="n">arg</span> <span class="ow">in</span> <span class="n">node</span><span class="o">.</span><span class="n">args</span><span class="o">.</span><span class="n">get</span><span class="p">(</span><span class="n">key</span><span class="p">)</span> <span class="ow">or</span> <span class="p">[]:</span> +</span><span id="walk_in_scope-803"><a href="#walk_in_scope-803"><span class="linenos">803</span></a> <span class="k">yield from</span> <span class="n">walk_in_scope</span><span class="p">(</span><span class="n">arg</span><span class="p">,</span> <span class="n">bfs</span><span class="o">=</span><span class="n">bfs</span><span class="p">)</span> </span></pre></div> |