cloud-fan commented on code in PR #41585:
URL: https://github.com/apache/spark/pull/41585#discussion_r1231979178
##########
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/unresolved.scala:
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@@ -207,12 +207,18 @@ object UnresolvedTVFAliases {
/**
* Holds the name of an attribute that has yet to be resolved.
*/
-case class UnresolvedAttribute(nameParts: Seq[String]) extends Attribute with
Unevaluable {
+case class UnresolvedAttribute(
+ nameParts: Seq[String],
+ optionalExprId: Option[ExprId])
Review Comment:
why do we need this?
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