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From "Ken Williams (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HIVE-1558) introducing the "dual" table
Date Thu, 17 Oct 2013 23:17:42 GMT

    [ https://issues.apache.org/jira/browse/HIVE-1558?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13798581#comment-13798581
] 

Ken Williams commented on HIVE-1558:
------------------------------------

[~jvs] - I think that's mostly a separate issue from this one.  {{SELECT * FROM (VALUES ...)}}
is related, but not really tied to DUAL.

> introducing the "dual" table
> ----------------------------
>
>                 Key: HIVE-1558
>                 URL: https://issues.apache.org/jira/browse/HIVE-1558
>             Project: Hive
>          Issue Type: New Feature
>          Components: Query Processor
>            Reporter: Ning Zhang
>            Assignee: Marcin Kurczych
>
> The "dual" table in MySQL and Oracle is very convenient in testing UDFs or constructing
rows without reading any other tables. 
> If dual is the only data source we could leverage the local mode execution. 



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