bowenliang123 commented on PR #5418:
URL: https://github.com/apache/kyuubi/pull/5418#issuecomment-1761581167

   I have done this PR https://github.com/apache/kyuubi/pull/3326 last year for 
skipping shadowed source tables of the permanent view. The 
`PermanentViewMarker` was introduced with the `RuleApplyPermanentViewMarker`  
rule to get it done.  Proper tests "KYUUBI #3326] check persisted view and skip 
shadowed table" are testing cases with permanent views.
   
   Could you have a deep look at this and tell the difference before further 
implementations?
   
   Skipping all the subqueries may be risky and not robust.


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