wangyum commented on a change in pull request #30849:
URL: https://github.com/apache/spark/pull/30849#discussion_r546233120
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/expressions.scala
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@@ -475,6 +475,8 @@ object SimplifyConditionals extends Rule[LogicalPlan] with
PredicateHelper {
case If(TrueLiteral, trueValue, _) => trueValue
case If(FalseLiteral, _, falseValue) => falseValue
case If(Literal(null, _), _, falseValue) => falseValue
+ case If(cond, TrueLiteral, FalseLiteral) if cond.deterministic => cond
Review comment:
We had similar discussions before:
https://github.com/apache/spark/pull/21848#pullrequestreview-139604857
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