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https://issues.apache.org/jira/browse/HIVE-1549?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12900450#action_12900450
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John Sichi commented on HIVE-1549:
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Hmmm, looking more closely...your patch includes changes to 
udaf_cover_pop.q.out and covar_samp.q.out (and those include conflict markers, 
which should never be there in a submitted patch).  But this change shouldn't 
actually affect those files at all, right?  I think if you just revert those 
before svn diff, all should be well.


> Add ANSI SQL correlation aggregate function CORR(X,Y).
> ------------------------------------------------------
>
>                 Key: HIVE-1549
>                 URL: https://issues.apache.org/jira/browse/HIVE-1549
>             Project: Hadoop Hive
>          Issue Type: New Feature
>          Components: Query Processor
>    Affects Versions: 0.7.0
>            Reporter: Pierre Huyn
>            Assignee: Pierre Huyn
>             Fix For: 0.7.0
>
>         Attachments: HIVE-1549.1.patch, HIVE-1549.2.patch, HIVE-1549.3.patch
>
>   Original Estimate: 120h
>  Remaining Estimate: 120h
>
> Aggregate function that computes the Pearson's coefficient of correlation 
> between a set of number pairs.

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