viirya commented on a change in pull request #32735:
URL: https://github.com/apache/spark/pull/32735#discussion_r644442715
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/higherOrderFunctions.scala
##########
@@ -192,6 +192,23 @@ trait HigherOrderFunction extends Expression with
ExpectsInputTypes {
argumentMap(variable.exprId)
}
}
+
+ override lazy val canonicalized: Expression = {
+ var currExprId = -1
+ val argumentMap = functions.flatMap(_.collect {
+ case l: NamedLambdaVariable =>
+ currExprId += 1
+ l.name -> currExprId
Review comment:
After #32424, I think it should be unique, but I agree that `l.exprId`
is safer.
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