amaliujia commented on pull request #2006:
URL: https://github.com/apache/calcite/pull/2006#issuecomment-643822485


   O nice. Didn't realize there is already a JIRA to refine the code generation 
implementation of MergeJoin.
   
   Ok then in this PR I will make the assumption that physical implementation 
will utilize collations thus is correct. So I won't consider not necessary 
ordering of sort keys too much. 
   
   Thanks!


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