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From "Navis (JIRA)" <>
Subject [jira] [Commented] (HIVE-3491) Expose column names to UDFs
Date Thu, 20 Sep 2012 06:35:08 GMT


Navis commented on HIVE-3491:

I've also tried similar thing for UDAF(HIVE-2964), and resigned because it was too confusional(MAP-AGGR,
etc.). But for UDF, it seemed possible.
> Expose column names to UDFs
> ---------------------------
>                 Key: HIVE-3491
>                 URL:
>             Project: Hive
>          Issue Type: New Feature
>          Components: Query Processor, UDF
>            Reporter: Adam Kramer
> If I run
> SELECT MY_FUNC(, FROM baz1 a JOIN baz2 b;
> ...the parsed query structure (i.e., that "foo" and "bar" are the name of the columns)
should be available to the UDF in some manner.

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