[GitHub] [spark] ulysses-you commented on pull request #41386: [SPARK-43883][SQL] Make CTAS Have a `UnaryRunnableCommand` Trait Supporting Children

["ulysses-you (via GitHub)" <gi...@apache.org>]

ulysses-you commented on PR #41386:
URL: https://github.com/apache/spark/pull/41386#issuecomment-1569362631

   We run a nested query execution inside ctas, so the real command for writing is `V1WriteCommand`. Make ctas inherit leaf node is to avoid applying rules more than once, because we would apply rules for the nested query execution.
   
   The explain of ctas does not show the nested query exectuion, you can check that by UI.


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