[GitHub] [doris] englefly commented on pull request #10667: [Enhancement](Nereids) add some expr rewrite rule and plan rewrite rule of rewrite its expression

[GitBox <gi...@apache.org>]

englefly commented on PR #10667:
URL: https://github.com/apache/doris/pull/10667#issuecomment-1191015808

   about the  "extract common expr"
   (a or b) and (a or c) -> a or (b and c)
   
   this rule may affect predicate push down. consider a and b are from left child, and c  is from right child. We cannot push down a or (b and c), however, we could push (a or b) to left child.


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