Github user mn-mikke commented on a diff in the pull request: https://github.com/apache/spark/pull/21687#discussion_r199427016 --- Diff: sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/expressions/ConditionalExpressionSuite.scala --- @@ -113,6 +113,35 @@ class ConditionalExpressionSuite extends SparkFunSuite with ExpressionEvalHelper assert(CaseWhen(Seq((c2, c4_notNull), (c3, c5))).nullable === true) } + test("case when - nullability of nested types") { --- End diff -- Ok, no problem. Will do.
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