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https://issues.apache.org/jira/browse/HIVE-313?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12677264#action_12677264
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Zheng Shao commented on HIVE-313:
---------------------------------
{code}
DATE_ADD('2009-01-01', 1) = '2009-01-02'
DATE_SUB('2009-01-01', 1) = '2008-12-31'
DATEDIFF('2009-01-01', '2008-12-31') = 1
{code}
> add UDF date_add, date_sub, datediff
> ------------------------------------
>
> Key: HIVE-313
> URL: https://issues.apache.org/jira/browse/HIVE-313
> Project: Hadoop Hive
> Issue Type: New Feature
> Components: Query Processor
> Reporter: Zheng Shao
>
> See
> http://dev.mysql.com/doc/refman/5.1/en/date-and-time-functions.html#function_date-add
> See
> http://dev.mysql.com/doc/refman/5.1/en/date-and-time-functions.html#function_date-sub
> See
> http://dev.mysql.com/doc/refman/5.1/en/date-and-time-functions.html#function_datediff
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