cloud-fan commented on a change in pull request #30955:
URL: https://github.com/apache/spark/pull/30955#discussion_r599729395
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/optimizer/expressions.scala
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@@ -548,41 +548,68 @@ object PushFoldableIntoBranches extends Rule[LogicalPlan]
with PredicateHelper {
foldables.nonEmpty && others.length < 2
}
+ // Not all UnaryExpression can be pushed into (if / case) branches, e.g.
Alias.
+ private def supportedUnaryExpression(e: UnaryExpression): Boolean = e match {
+ case _: IsNull | _: IsNotNull => true
+ case _: UnaryMathExpression | _: Abs | _: Bin | _: Factorial | _: Hex =>
true
+ case _: String2StringExpression | _: Ascii | _: Base64 | _: BitLength | _:
Chr | _: Length =>
+ true
+ case _: CastBase => true
+ case _: GetDateField | _: LastDay => true
+ case _: ExtractIntervalPart => true
+ case _: ArraySetLike => true
+ case _: ExtractValue => true
+ case _ => false
+ }
+
+ // Not all BinaryExpression can be pushed into (if / case) branches.
+ private def supportedBinaryExpression(e: BinaryExpression): Boolean = e
match {
+ case _: BinaryComparison | _: StringPredicate | _: StringRegexExpression
=> true
+ case _: BinaryArithmetic => true
+ case _: BinaryMathExpression => true
+ case _: AddMonths | _: DateAdd | _: DateAddInterval | _: DateDiff | _:
DateSub => true
Review comment:
I think so
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