Github user rxin commented on a diff in the pull request:
https://github.com/apache/spark/pull/15764#discussion_r86494337
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/command/views.scala ---
@@ -131,6 +131,26 @@ case class CreateViewCommand(
s"specified by CREATE VIEW (num:
`${userSpecifiedColumns.length}`).")
}
+ // When creating a permanent view, not allowed to reference temporary
objects.
+ if (!isTemporary) {
+ child.collect {
+ // Disallow creating permanent views based on temporary views.
--- End diff --
i'd also copy paste what you put in the pr description in here, on why you
are traversing the unresolved plan.
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