Github user cloud-fan commented on a diff in the pull request:
https://github.com/apache/spark/pull/11822#discussion_r56810312
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/namedExpressions.scala
---
@@ -264,18 +264,18 @@ case class AttributeReference(
if (name == newName) {
this
} else {
- AttributeReference(newName, dataType, nullable, metadata)(exprId,
qualifiers, isGenerated)
+ AttributeReference(newName, dataType, nullable, metadata)(exprId,
qualifier, isGenerated)
}
}
/**
- * Returns a copy of this [[AttributeReference]] with new qualifiers.
+ * Returns a copy of this [[AttributeReference]] with new qualifier.
*/
- override def withQualifiers(newQualifiers: Seq[String]):
AttributeReference = {
- if (newQualifiers.toSet == qualifiers.toSet) {
+ override def withQualifier(newQualifier: Option[String]):
AttributeReference = {
+ if (newQualifier.toSet == qualifier.toSet) {
--- End diff --
no need to call `toSet` here?
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