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Posted to commits@doris.apache.org by GitBox <gi...@apache.org> on 2020/07/07 10:18:04 UTC

[GitHub] [incubator-doris] yangzhg opened a new issue #4040: Predicate pushdown amy incorrect when groupby with grouping sets 

yangzhg opened a new issue #4040:
URL: https://github.com/apache/incubator-doris/issues/4040


   with sql like 
   ```
   SELECT
       IF(col2 IS NULL, 'ALL', col2) AS col2,
       IF(col3 IS NULL, 'ALL', col3) AS col3,
       pv
   FROM
   (
       SELECT
           col1,
           col2,
           col3,
           SUM(pv) AS pv
       FROM  a
       WHERE col1 = 0
           AND col4 = 1
           AND col3 = 'foo'
       GROUP BY 
       GROUPING SETS (
           (col1),
           (col1, col2),
           (col1, col3),
           (col1, col2, col3)
       )
   ) t
   WHERE IF(col2 IS NULL, 'ALL', col2) = 'ALL'
   ```
   
   the IF(col2 IS NULL, 'ALL', col2) = 'ALL'  will be push down to scan node of table a, if grouping set is given and column is not in all grouping set list, we cannot push the predicate since the column value can be null


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[GitHub] [incubator-doris] morningman closed issue #4040: Predicate pushdown amy incorrect when groupby with grouping sets

Posted by GitBox <gi...@apache.org>.
morningman closed issue #4040:
URL: https://github.com/apache/incubator-doris/issues/4040


   


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