Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/18968#discussion_r134136888
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/predicates.scala
---
@@ -138,46 +138,80 @@ case class Not(child: Expression)
case class In(value: Expression, list: Seq[Expression]) extends Predicate {
require(list != null, "list should not be null")
+
+ lazy val valExprs = value match {
+ case cns: CreateNamedStruct => cns.valExprs
+ case expr => Seq(expr)
+ }
+
+ override lazy val resolved: Boolean = {
+ lazy val checkForInSubquery = list match {
+ case (l @ ListQuery(sub, children, _)) :: Nil =>
+ // SPARK-21759:
+ // It is possibly that the subquery plan has more output than
value expressions, because
+ // the condition expressions in `ListQuery` might use part of
subquery plan's output.
--- End diff --
@dilipbiswal Yeah, you are right. Normally we don't trigger it. It is just
here in case we possibly mess the query plan.
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