ulysses-you commented on code in PR #46537:
URL: https://github.com/apache/spark/pull/46537#discussion_r1597404307
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sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/LogicalPlan.scala:
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@@ -118,7 +118,9 @@ abstract class LogicalPlan
def resolve(schema: StructType, resolver: Resolver): Seq[Attribute] = {
schema.map { field =>
resolve(field.name :: Nil, resolver).map {
- case a: AttributeReference => a
+ case a: AttributeReference =>
+ // Keep the metadata in given schema.
+ a.copy(metadata = field.metadata)(exprId = a.exprId, qualifier =
a.qualifier)
Review Comment:
`a.withMetadata(field.metadata)`
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