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Posted to commits@calcite.apache.org by GitBox <gi...@apache.org> on 2021/12/13 14:11:30 UTC

[GitHub] [calcite] korlov42 commented on pull request #2623: CALCITE-4913 Correlated variables in a select list are not deduplicated

korlov42 commented on pull request #2623:
URL: https://github.com/apache/calcite/pull/2623#issuecomment-992519038


   > The sad thing is Calcite users would get similar issues: they would get wrong results/wrong plans, and nobody would know the reason.
   
   Before this patch, they could get a correlated projection without being notified this particular project should set a correlation variable (`project#getVariablesSet()` returns an empty set). The only change is that now a `project` returns a valid set of variables it set. 


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