Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/10762#discussion_r49827999
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/basicOperators.scala
---
@@ -144,6 +147,35 @@ case class Join(
}
}
+ def outerProjectList: Seq[NamedExpression] = {
--- End diff --
did you mean "column" instead of row? columns of the same name should only
appear once.
also this code should go into the analyzer.
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