dbtsai commented on a change in pull request #29567:
URL: https://github.com/apache/spark/pull/29567#discussion_r479868516
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File path:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/optimizer/SimplifyConditionalSuite.scala
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@@ -165,4 +165,23 @@ class SimplifyConditionalSuite extends PlanTest with
PredicateHelper {
Literal(1))
)
}
+
+ test("simplify if when then clause is null and else clause is boolean") {
Review comment:
Can we check when cond is nullable, we should not do the optimization?
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