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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