cloud-fan commented on a change in pull request #26437: [SPARK-29800][SQL] Plan
non-correlated Exists 's subquery in PlanSubqueries
URL: https://github.com/apache/spark/pull/26437#discussion_r362434911
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/finishAnalysis.scala
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@@ -52,6 +52,16 @@ object ReplaceExpressions extends Rule[LogicalPlan] {
}
}
+object ReplaceNonCorrelatedExists extends Rule[LogicalPlan] {
+ override def apply(plan: LogicalPlan): LogicalPlan = plan
transformAllExpressions {
+ case exists: Exists
Review comment:
nit: `case exists: Exists if exists.children.isEmpty`
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