Github user viirya commented on a diff in the pull request: https://github.com/apache/spark/pull/21857#discussion_r205565594 --- Diff: sql/core/src/main/scala/org/apache/spark/sql/execution/SparkStrategies.scala --- @@ -532,9 +532,13 @@ abstract class SparkStrategies extends QueryPlanner[SparkPlan] { case logical.Intersect(left, right) => throw new IllegalStateException( "logical intersect operator should have been replaced by semi-join in the optimizer") - case logical.Except(left, right) => + case logical.Except(left, right, false) => throw new IllegalStateException( "logical except operator should have been replaced by anti-join in the optimizer") + case logical.Except(left, right, true) => + throw new IllegalStateException( + "logical except operator should have been replaced by union, aggregate" + --- End diff -- hmm, it looks no diff to above one. Maybe `except (all) operator`?
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