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Posted to github@arrow.apache.org by GitBox <gi...@apache.org> on 2021/10/18 20:23:05 UTC

[GitHub] [arrow-datafusion] alamb opened a new pull request #1145: WIP: Alternate implementation of partial evaluation

alamb opened a new pull request #1145:
URL: https://github.com/apache/arrow-datafusion/pull/1145


   # Which issue does this PR close?
   
   Re https://github.com/apache/arrow-datafusion/issues/1070
   
    # Rationale for this change
   Sketch out an alternate algorithm for part of https://github.com/apache/arrow-datafusion/pull/1128 by @pjmore 
   
   # What changes are included in this PR?
   Sketch of a recursive evaluator using code from @pjmore 
   
   # Are there any user-facing changes?
   not yet
   
   <!--
   If there are any breaking changes to public APIs, please add the `api change` label.
   -->
   


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[GitHub] [arrow-datafusion] alamb commented on pull request #1145: WIP: Alternate implementation of partial evaluation / generalized constant folding

Posted by GitBox <gi...@apache.org>.
alamb commented on pull request #1145:
URL: https://github.com/apache/arrow-datafusion/pull/1145#issuecomment-947895222


   This turns out to be something that will help IOx so I am going to keep hacking on it
   
   In case anyone else is interested, we have some rewrite passes that may end up introducing predicates like `('foo' == 'bar' AND ...)` which it would be great for DataFusion to be able to simplify 


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[GitHub] [arrow-datafusion] alamb commented on pull request #1145: WIP: Alternate implementation of partial evaluation / generalized constant folding

Posted by GitBox <gi...@apache.org>.
alamb commented on pull request #1145:
URL: https://github.com/apache/arrow-datafusion/pull/1145#issuecomment-947964437


   I plan to "productionize" this approach in https://github.com/apache/arrow-datafusion/pull/1153, so closing this PR


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[GitHub] [arrow-datafusion] alamb closed pull request #1145: WIP: Alternate implementation of partial evaluation / generalized constant folding

Posted by GitBox <gi...@apache.org>.
alamb closed pull request #1145:
URL: https://github.com/apache/arrow-datafusion/pull/1145


   


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