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