cloud-fan commented on a change in pull request #30488:
URL: https://github.com/apache/spark/pull/30488#discussion_r533340146
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/namedExpressions.scala
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@@ -147,7 +147,8 @@ abstract class Attribute extends LeafExpression with
NamedExpression with NullIn
case class Alias(child: Expression, name: String)(
val exprId: ExprId = NamedExpression.newExprId,
val qualifier: Seq[String] = Seq.empty,
- val explicitMetadata: Option[Metadata] = None)
+ val explicitMetadata: Option[Metadata] = None,
+ val deniedMetadataKeys: Seq[String] = Seq.empty)
Review comment:
let's add a param doc for it
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