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[SPARK-25892][SQL]Change AttributeReference.withMetadata's return type to AttributeReference #22918

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[SPARK-25892][SQL]Change AttributeReference.withMetadata's return type to AttributeReference #22918

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return AttributeReference type for AttributeReference.withMetadata
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@kevinyu98
kevinyu98 committed Oct 31, 2018
commit 7aa2e9f9113ace0106ed1de31bad5997d600f03b
2 changes: 1 addition & 1 deletion sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/namedExpressions.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -307,7 +307,7 @@ case class AttributeReference(
}
}

override def withMetadata(newMetadata: Metadata): Attribute = {
override def withMetadata(newMetadata: Metadata): AttributeReference = {
AttributeReference(name, dataType, nullable, newMetadata)(exprId, qualifier)
}

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