cloud-fan commented on a change in pull request #34055:
URL: https://github.com/apache/spark/pull/34055#discussion_r714908721
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/expressions.scala
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@@ -488,6 +489,16 @@ object SimplifyBinaryComparison
// False with inequality
case a GreaterThan b if canSimplifyComparison(a, b,
notNullExpressions) => FalseLiteral
case a LessThan b if canSimplifyComparison(a, b, notNullExpressions)
=> FalseLiteral
+
+ // One side is Literal
+ case (a: Predicate) EqualTo TrueLiteral => a
Review comment:
Does `a` have to be a `Predicate`? It seems like we can apply this
optimization to any expression, like a column, or a function that returns
boolean.
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