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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2021/05/24 20:37:27 UTC

[GitHub] [arrow-datafusion] alamb commented on issue #410: Remove reundant filters (e.g. `c> 5 AND c>5` --> `c>5`)

alamb commented on issue #410:
URL: https://github.com/apache/arrow-datafusion/issues/410#issuecomment-847318273


   Sure -- sounds great @jgoday 
   
   I think the transformation is valid for predicates connected by `AND` at any "depth"
   
   so like I would hope the transformation would work for both the following:
   ```
   (c > 5) AND (c > 5) --> (c > 5)
   ((c > 5) AND (d < 6)) AND (c > 5) --> (c > 5) AND (d < 6)
   ```


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