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From "Namit Jain (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-607) Create statistical UDFs.
Date Wed, 29 Jul 2009 16:54:15 GMT

    [ https://issues.apache.org/jira/browse/HIVE-607?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12736705#action_12736705
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Namit Jain commented on HIVE-607:
---------------------------------

Can you remove UDAFStd.java from the patch - I dont think it is being used

> Create statistical UDFs.
> ------------------------
>
>                 Key: HIVE-607
>                 URL: https://issues.apache.org/jira/browse/HIVE-607
>             Project: Hadoop Hive
>          Issue Type: New Feature
>          Components: Query Processor
>            Reporter: S. Alex Smith
>            Assignee: Emil Ibrishimov
>            Priority: Minor
>             Fix For: 0.4.0
>
>         Attachments: HIVE-607.1.patch, UDAFStddev.java
>
>
> Create UDFs replicating:
> STD() 	Return the population standard deviation
> STDDEV_POP()(v5.0.3) 	Return the population standard deviation
> STDDEV_SAMP()(v5.0.3) 	Return the sample standard deviation
> STDDEV() 	Return the population standard deviation
> SUM() 	Return the sum
> VAR_POP()(v5.0.3) 	Return the population standard variance
> VAR_SAMP()(v5.0.3) 	Return the sample variance
> VARIANCE()(v4.1) 	Return the population standard variance
> as found at http://dev.mysql.com/doc/refman/5.0/en/group-by-functions.html.

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