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https://issues.apache.org/jira/browse/HIVE-5810?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13993757#comment-13993757
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Alan Gates commented on HIVE-5810:
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Hive already has DATE_ADD. Why not add functionality to that rather than add a
different function that does nearly the same thing?
> create a function add_date as exists in mysql
> ------------------------------------------------
>
> Key: HIVE-5810
> URL: https://issues.apache.org/jira/browse/HIVE-5810
> Project: Hive
> Issue Type: Improvement
> Reporter: Anandha L Ranganathan
> Assignee: Anandha L Ranganathan
> Attachments: HIVE-5810.2.patch, HIVE-5810.patch
>
> Original Estimate: 40h
> Remaining Estimate: 40h
>
> MySQL has ADDDATE(date,INTERVAL expr unit).
> Similarly in Hive we can have (date,unit,expr).
> Here Unit is DAY/Month/Year
> For example,
> add_date('2013-11-09','DAY',2) will return 2013-11-11.
> add_date('2013-11-09','Month',2) will return 2014-01-09.
> add_date('2013-11-09','Year',2) will return 2014-11-11.
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