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https://issues.apache.org/jira/browse/HIVE-313?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12681185#action_12681185
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Raghotham Murthy commented on HIVE-313:
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We should document the fact that we only do UTC now. Its probably not very
intuitive to do date arithmetic in UTC if people are thinking in their own
timezones. I guess we should support locales later (probably another jira).
Also, just checked the date_add spec in the URL specified above. It has a lot
more functionality than what you have implemented. Similar with date_sub. Maybe
file jiras to make these functions feature complete?
Btw, if you are confident that we dont have to add tests with table columns, I
am fine by having only constants.
+1 as long as you file those jiras and add documentation to the Hive Language
Manual :)
> 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
> Attachments: HIVE-313.1.patch, HIVE-313.2.patch
>
>
> 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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