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https://issues.apache.org/jira/browse/HIVE-1558?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13265575#comment-13265575
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Edward Capriolo commented on HIVE-1558:
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I created a DualInputFormat that can be used to easily create a dual table.
https://github.com/edwardcapriolo/DualInputFormat.
> 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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