Github user gatorsmile commented on a diff in the pull request: https://github.com/apache/spark/pull/19494#discussion_r145226891 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/columnar/InMemoryTableScanExec.scala --- @@ -102,6 +102,7 @@ case class InMemoryTableScanExec( case IsNull(a: Attribute) => statsFor(a).nullCount > 0 case IsNotNull(a: Attribute) => statsFor(a).count - statsFor(a).nullCount > 0 + case In(_: AttributeReference, list: Seq[Expression]) if list.isEmpty => Literal.FalseLiteral --- End diff -- BTW, this is wrong. If the left value is null, it should return null instead of false.
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