liukun4515 opened a new issue, #2837:
URL: https://github.com/apache/arrow-datafusion/issues/2837

   for datafusion, we need to add interface which is used to identify the expr 
is constant or  literal or not.
   If we have this interface, we can make more optimization.
   But the interface should be better in the logical expr not in the physical 
expr like sprak `fold`
   
   _Originally posted by @liukun4515 in 
https://github.com/apache/arrow-datafusion/pull/2834#discussion_r913453698_


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