10110346 commented on a change in pull request #24214: [SPARK-27279][SQL] Reuse
subquery should compare child plan of `SubqueryExec`
URL: https://github.com/apache/spark/pull/24214#discussion_r269413177
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/basicPhysicalOperators.scala
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@@ -674,6 +674,8 @@ case class SubqueryExec(name: String, child: SparkPlan)
extends UnaryExecNode {
override def outputOrdering: Seq[SortOrder] = child.outputOrdering
+ override def doCanonicalize(): SparkPlan = child.canonicalized
Review comment:
#18169 fixed this problem like this before, but I don't know why was it
reverted.
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