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From "Paul Yang (JIRA)" <j...@apache.org>
Subject [jira] Updated: (HIVE-655) Add support for user defined table generating functions
Date Tue, 17 Nov 2009 21:21:39 GMT

     [ https://issues.apache.org/jira/browse/HIVE-655?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Paul Yang updated HIVE-655:
---------------------------

    Attachment: HIVE-655.3.patch

* Simplified genSelectPlan(), genUDTFPlan() to handle only single UDTF case
* Added detection of multiple expressions in SELECT to throw error when used with UDTF's
* Added detection of {group, cluster, distribute, sort} by to throw errors as well

> Add support for user defined table generating functions
> -------------------------------------------------------
>
>                 Key: HIVE-655
>                 URL: https://issues.apache.org/jira/browse/HIVE-655
>             Project: Hadoop Hive
>          Issue Type: New Feature
>          Components: Query Processor
>            Reporter: Raghotham Murthy
>            Assignee: Paul Yang
>         Attachments: HIVE-655.1.patch, HIVE-655.2.patch, HIVE-655.3.patch
>
>
> Provide a way for users to add a table generating function, i.e., functions that generate
multiple rows from a single input row. Currently, the only way to do it is via the TRANSFORM
clause which requires streaming the data.

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