[jira] Commented: (HIVE-269) Add log/exp UDF functions to Hive

["Jeff Hammerbacher (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HIVE-269?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12670275#action_12670275 ] 

Jeff Hammerbacher commented on HIVE-269:
----------------------------------------

https://issues.apache.org/jira/browse/HIVE-245 has POW(X, Y) open, so make sure to close that as a dupe if you do POW here?

> Add log/exp UDF functions to Hive
> ---------------------------------
>
>                 Key: HIVE-269
>                 URL: https://issues.apache.org/jira/browse/HIVE-269
>             Project: Hadoop Hive
>          Issue Type: New Feature
>          Components: Query Processor
>    Affects Versions: 0.2.0
>            Reporter: Zheng Shao
>            Assignee: Zheng Shao
>         Attachments: HIVE-269.1.patch
>
>
> See http://dev.mysql.com/doc/refman/5.0/en/mathematical-functions.html
> {code}
> EXP() 	Raise to the power of
> LN() 	Return the natural logarithm of the argument
> LOG10() 	Return the base-10 logarithm of the argument
> LOG2() 	Return the base-2 logarithm of the argument
> LOG() 	Return the natural logarithm of the first argument 
> POW() 	Return the argument raised to the specified power
> POWER() 	Return the argument raised to the specified power
> {code}

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