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[SPARK-42852][SQL] Revert NamedLambdaVariable related changes from EquivalentExpressions #40475

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[SPARK-42852][SQL] Revert NamedLambdaVariable related changes from EquivalentExpressions #40475

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5 changes: 2 additions & 3 deletions ...lyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/EquivalentExpressions.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -144,10 +144,9 @@ class EquivalentExpressions {

private def supportedExpression(e: Expression) = {
!e.exists {
// `LambdaVariable` is usually used as a loop variable and `NamedLambdaVariable` is used in
// higher-order functions, which can't be evaluated ahead of the execution.
// `LambdaVariable` is usually used as a loop variable, which can't be evaluated ahead of the
// loop. So we can't evaluate sub-expressions containing `LambdaVariable` at the beginning.
case _: LambdaVariable => true
case _: NamedLambdaVariable => true

// `PlanExpression` wraps query plan. To compare query plans of `PlanExpression` on executor,
// can cause error like NPE.
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