[GitHub] [spark] jchen5 commented on a diff in pull request #42725: [SPARK-45009][SQL] Decorrelate predicate subqueries in join condition

["jchen5 (via GitHub)" <gi...@apache.org>]

jchen5 commented on code in PR #42725:
URL: https://github.com/apache/spark/pull/42725#discussion_r1317574577


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sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala:
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@@ -4387,6 +4387,15 @@ object SQLConf {
       .booleanConf
       .createWithDefault(true)
 
+  val OPTIMIZE_UNCORRELATED_IN_SUBQUERIES_IN_JOIN_CONDITION =

Review Comment:
   Can you add a comment that this interacts with LEGACY_NULL_IN_EMPTY_LIST_BEHAVIOR



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