mustafasrepo commented on PR #9131:
URL: 
https://github.com/apache/arrow-datafusion/pull/9131#issuecomment-1928843392

   > Thanks @mustafasrepo do you think it is #5436 related?
   
   I think that PR is related to the projection functionality inside 
FilterExec. But I am not sure though.
   I think, currently we can eliminate unnecessary fields in the filter 
expression by adding projection after `FilterExec` such as:
   ```
   ProjectionExec(a)
   --FilterExec(a+b=2)
   ```
   However, in the issue I am not sure this is the desired feature. 


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