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https://issues.apache.org/jira/browse/HIVE-269?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12670569#action_12670569
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Jeff Hammerbacher commented on HIVE-269:
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Looks good, with one tiny nit: add "base" to the javadoc:
/**
* Returns the logarithm of a with base.
*/
should be:
/**
* Returns the logarithm of a with base "base".
*/
> 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, HIVE-269.2.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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