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Posted to issues@tajo.apache.org by "Keuntae Park (JIRA)" <ji...@apache.org> on 2015/04/06 03:32:04 UTC

[jira] [Assigned] (TAJO-1525) Implement INTERSECT ALL physical operator

     [ https://issues.apache.org/jira/browse/TAJO-1525?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Keuntae Park reassigned TAJO-1525:
----------------------------------

    Assignee: Keuntae Park

> Implement INTERSECT ALL physical operator
> -----------------------------------------
>
>                 Key: TAJO-1525
>                 URL: https://issues.apache.org/jira/browse/TAJO-1525
>             Project: Tajo
>          Issue Type: Sub-task
>            Reporter: Keuntae Park
>            Assignee: Keuntae Park
>
> As discussed in TAJO-1517,
> INTERSECT ALL needs new physical operator,
> which returns the exact number of overlapping rows between results of two query blocks.
> For example, when query1 returns 
> {code}
> 1, 3, 3, 3
> {code}
> while query2 returns 
> {code}
> 3, 3
> {code}
> query1 INTERSECT ALL query2 should return 
> {code}
> 3, 3
> {code}



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