cloud-fan commented on a change in pull request #24344: [SPARK-27440][SQL]
Optimize uncorrelated predicate subquery
URL: https://github.com/apache/spark/pull/24344#discussion_r279369065
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File path:
sql/core/src/main/scala/org/apache/spark/sql/execution/subquery.scala
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@@ -118,6 +224,19 @@ case class PlanSubqueries(sparkSession: SparkSession)
extends Rule[SparkPlan] {
ScalarSubquery(
SubqueryExec(s"subquery${subquery.exprId.id}", executedPlan),
subquery.exprId)
+ case subquery: expressions.Exists =>
Review comment:
I'm a little confused. After adding the new physical subqueries, I think we
just need to update `RewritePredicateSubquery`.
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