Hisoka-X commented on code in PR #40865:
URL: https://github.com/apache/spark/pull/40865#discussion_r1172544078
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/subquery.scala:
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@@ -459,7 +459,8 @@ object RewriteCorrelatedScalarSubquery extends
Rule[LogicalPlan] with AliasHelpe
case alias @ Alias(_: AttributeReference, _) =>
(alias.exprId, Literal.create(null, alias.dataType))
case alias @ Alias(l: Literal, _) =>
- (alias.exprId, l.copy(value = null))
+ // SPARK-43156: copy value to get the correct value when extracting in
constructLeftJoins
+ (alias.exprId, l.copy(value = l.value))
Review Comment:
My fault, just want to create new `Literal` instance with same value.
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