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https://issues.apache.org/jira/browse/HIVE-691?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12740578#action_12740578
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Namit Jain commented on HIVE-691:
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I will take a look and get back to you

> show documentation for user defined functions
> ---------------------------------------------
>
>                 Key: HIVE-691
>                 URL: https://issues.apache.org/jira/browse/HIVE-691
>             Project: Hadoop Hive
>          Issue Type: Improvement
>          Components: Query Processor
>            Reporter: Prasad Chakka
>            Assignee: Emil Ibrishimov
>            Priority: Blocker
>             Fix For: 0.4.0
>
>         Attachments: HIVE-691.1.patch, HIVE-691.2.patch
>
>
> There are lot of functions and more of them will be added. I think it is 
> cumbersome to update wiki or ask users to go to wiki to find out 
> documentation. instead each user defined function can have an annotation 
> containing documentation and 'show functions' command or similar can show the 
> documentation to users on command line. it will also be easier to update the 
> documentation along with code.

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