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https://issues.apache.org/jira/browse/HIVE-691?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12735482#action_12735482
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Namit Jain commented on HIVE-691:
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In the other jira (show functions), describe function {extended} is already
proposed.
We can add documentation there
> 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
>
> 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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