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From chenghao-intel <...@git.apache.org>
Subject [GitHub] spark pull request: [WIP][Spark-SQL] Optimize the Constant Folding...
Date Mon, 28 Apr 2014 08:36:37 GMT
Github user chenghao-intel commented on the pull request:

    https://github.com/apache/spark/pull/482#issuecomment-41534729
  
    Thank you @marmbrus , I've updated the code a little bit.
    
    I've created another rule "NullPropagation", and it transforms the tree from bottom to
top, and keep unchanged for the rule constant folding.


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