liukun4515 commented on PR #3727:
URL: 
https://github.com/apache/arrow-datafusion/pull/3727#issuecomment-1269873727

   > > I think there are may place which use the ExprRewriter to rewrite the 
expr in the optimizer like ConstEvaluator and other.
   > > Do we need to fix all of them?
   > 
   > That is an excellent point @liukun4515 -- I think we probably do. I will 
file a follow on ticket to track and do so
   
   I have less knowledge about the alias for the expr, can you explain when and 
where we should do the alias for the expr which will be rewrited.


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