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https://issues.apache.org/jira/browse/HIVE-691?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12737997#action_12737997
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Emil Ibrishimov commented on HIVE-691:
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The reasen I put _FUNC_ instead of directly using the name of the function is
that for classes that implement several functions, we can get situations like:
{noformat}
DESCRIBE FUNCTION &&;
a AND b - Logical and
{noformat}
Such description is a little bit confusing because you ask for one function and
it outputs another so I decided to use _FUNC_ and replace it with the actual
function name that was used to call describe.
Maybe we can replace _FUNC_ by _FUNC_NAME_ ?
> 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
> Fix For: 0.4.0
>
> Attachments: HIVE-691.1.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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