kangkaisen opened a new pull request #3453:
URL: https://github.com/apache/incubator-doris/pull/3453


   For #3452 
   
   Current implement is very simply and conservative, because our query planner 
is error-prone.
   
   After we implement the new query planner, we could do this work by 
`Predicate Equivalence Class` and `PredicatePushDown` rule like presto. 


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