comphead commented on issue #3722:
URL: 
https://github.com/apache/arrow-datafusion/issues/3722#issuecomment-1276501438

   @andygrove I can take this, this requires change in planner and in zillion 
of tests
   
   Reg to repeated aliases like
   `let sql = "SELECT COALESCE(NULL, 'test'), COALESCE(NULL, 'test')";`
   
   we can add name col with some index like `concat_0, concat_1` to prvent name 
collision


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