wangshuo128 commented on PR #12490:
URL: https://github.com/apache/doris/pull/12490#issuecomment-1241480467

   Just curious, does BE support limit output before calculating projections 
inside a BE plan node currently?
   Let's say we have a plan `limit -> project -> olap scan`. After applying the 
rule, it's rewritten to `project -> limit -> olap scan`.  
   The translated plan would be `OlapScanNode(project and then limit)` or 
something else. If so, does BE support this plan(first limit and then project 
inside olap scan) currently? @Kikyou1997 @morrySnow 


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