[GitHub] [calcite] hannerwang opened a new pull request #2408: [CALCITE-4512] Optimize when GROUP BY or HAVING alias should be substituted with select item

Tue, 27 Apr 2021 06:49:54 -0700 


hannerwang opened a new pull request #2408:
URL: https://github.com/apache/calcite/pull/2408


   for GROUP BY alias substituting:
   1. if the GROUP BY expression is an identifier and the identifier can't be 
resolved to exact one column in current select scope.
   2. CUBE, ROLLUP, GROUPING SETS, ROW top level argument behave in the same 
way with GROUP BY expression.
   
   for HAVING alias substituting:
   1. any except AGGREGATE or its arguments . 
   
   


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