kevinwallimann commented on a change in pull request #35270:
URL: https://github.com/apache/spark/pull/35270#discussion_r790890482



##########
File path: 
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/namedExpressions.scala
##########
@@ -172,7 +172,7 @@ case class Alias(child: Expression, name: String)(
           val builder = new MetadataBuilder().withMetadata(named.metadata)
           nonInheritableMetadataKeys.foreach(builder.remove)
           builder.build()
-
+        case structField: GetStructField => structField.metadata

Review comment:
       Yes, you're right. I fixed it and added an additional test.




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