wankunde commented on PR #40157:
URL: https://github.com/apache/spark/pull/40157#issuecomment-1453516931

   Hi, @cloud-fan @viirya 
   I updated the PR and support subexpression elimination in FilterExec and 
JoinExec.
   We can support some other operator subexpression elimination in two steps.
   Do you have any good advice?


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