Github user gatorsmile commented on a diff in the pull request: https://github.com/apache/spark/pull/23138#discussion_r236136178 --- Diff: sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/SetOperationSuite.scala --- @@ -196,4 +196,31 @@ class SetOperationSuite extends PlanTest { )) comparePlans(expectedPlan, rewrittenPlan) } + + test("SPARK-23356 union: expressions in project list are addition to each side") { --- End diff -- `are addition to each side` -> `are pushed down`
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