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From chenghao-intel <...@git.apache.org>
Subject [GitHub] spark pull request: [SPARK-8972][SQL]Incorrect result for rollup
Date Mon, 13 Jul 2015 05:14:13 GMT
Github user chenghao-intel commented on the pull request:

    https://github.com/apache/spark/pull/7343#issuecomment-120814537
  
    That's correct, `complex group by keys` is the expression other than `AttributeReference`s.
    
    I am not just simply change the group by keys, but with an alias. e.g.
    
    ```
    SELECT key+key FROM src GROUP BY key+key WITH ROLLUP 
    ==>
    SELECT k FROM (SELECT key + key as k FROM src) t GROUP BY k WITH ROLLUP
    ```


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