Re: [PR] [SPARK-36112] [SQL] Support correlated EXISTS and IN subqueries using DecorrelateInnerQuery framework [spark]

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

agubichev commented on code in PR #43111:
URL: https://github.com/apache/spark/pull/43111#discussion_r1342795235


##########
sql/catalyst/src/main/scala/org/apache/spark/sql/internal/SQLConf.scala:
##########
@@ -3416,6 +3416,14 @@ object SQLConf {
       .booleanConf
       .createWithDefault(true)
 
+  val DECORRELATE_EXISTS_AND_IN_SUBQUERIES =
+    buildConf("spark.sql.optimizer.decorrelateExistsIn.enabled")
+      .internal()
+      .doc("Decorrelate EXISTS and IN subqueries.")
+      .version("4.0.0")
+      .booleanConf
+      .createWithDefault(true)

Review Comment:
   some queries were not supported and are supported with this flag, that's the only result change.



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