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From "Raghotham Murthy (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HIVE-655) Add support for user defined table generating functions
Date Tue, 21 Jul 2009 00:51:14 GMT

    [ https://issues.apache.org/jira/browse/HIVE-655?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12733422#action_12733422
] 

Raghotham Murthy commented on HIVE-655:
---------------------------------------

The problem with doing it the oracle way is that we need to find another way to specify the
input (or FROM clause) for the TRANSFORM/UDTF itself. So, seems like its better to specify
table function in the SELECT and use that as a subquery in the FROM clause.

> 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: Raghotham Murthy
>
> 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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