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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2021/09/17 13:09:06 UTC

[GitHub] [arrow-datafusion] waynexia commented on issue #1014: Implement `PartialOrd` or `Expr`

waynexia commented on issue #1014:
URL: https://github.com/apache/arrow-datafusion/issues/1014#issuecomment-921783553


   Thanks, @alamb. That's a good point to have `PartialOrd` on `Expr`.
   
   For the CSE use case, it would be nice if we can compare and arrange `Expr`s in some kinds of order. By doing that we can recognize `a+b` and `b+a` are the same expression. And I think it can help other things too. 


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