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https://issues.apache.org/jira/browse/HIVE-691?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12738045#action_12738045
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Raghotham Murthy commented on HIVE-691:
---------------------------------------
I meant adding the name of the function to the annotation. Something like this:
{code}
@description(
name = "&&,AND",
value = "a _FUNC_ b - Logical and",
extended = "Example:\n" +
" > SELECT * FROM srcpart WHERE src.hr=12 _FUNC_ " +
"src.hr='2008-04-08' LIMIT 1;\n" +
" 27 val_27 2008-04-08 12"
)
{code}
If there's more than one name, you can return a comma separated list of names
and that wont be confusing. If there is a name in the annotation, we can just
extract the names associated with each UDF class and register that class with
all of its associated names. Does that make sense?
> 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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