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From "Sean Hsuan-Yi Chu (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (DRILL-2317) UNION ALL on sub-queries with single column projection fails on GROUP BY
Date Tue, 10 Mar 2015 17:14:38 GMT

     [ https://issues.apache.org/jira/browse/DRILL-2317?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sean Hsuan-Yi Chu resolved DRILL-2317.
--------------------------------------
    Resolution: Fixed

Resolved in commit #: 0368adf0c

> UNION ALL on sub-queries with single column projection fails on GROUP BY
> ------------------------------------------------------------------------
>
>                 Key: DRILL-2317
>                 URL: https://issues.apache.org/jira/browse/DRILL-2317
>             Project: Apache Drill
>          Issue Type: Bug
>          Components: Query Planning & Optimization
>    Affects Versions: 0.8.0
>            Reporter: Abhishek Girish
>            Assignee: Sean Hsuan-Yi Chu
>
> A UNION ALL on two sub-queries with only a single column projected, and GROUP BY on the
whole query fails with an IndexOutOfBoundsException
> *The following query fails to execute:*
> {code:sql}
> SELECT c1
> FROM   ((SELECT ss_quantity           AS c1
>         FROM   store_sales limit 1)
>         UNION ALL 
>         (SELECT ws_quantity              AS c2
>         FROM   web_sales limit 1)
>         ) foo 
> GROUP  BY c1;
> {code}
> *The following query also fails to execute:*
> {code:sql}
> SELECT distinct(c)
> FROM   ((SELECT ss_quantity           AS c
>         FROM   store_sales limit 1)
>         UNION ALL 
>         (SELECT ws_quantity              AS c
>         FROM   web_sales limit 1)
>         ) ;
> {code}
> Error:
> Query failed: RemoteRpcException: Failure while running fragment., index: 0, length:
1 (expected: range(0, 0))
> LOG message indicates java.lang.IndexOutOfBoundsException
> *The following query executes fine:*
> {code:sql}
> SELECT c1
> FROM   ((SELECT ss_quantity           AS c1, ss_item_sk c3
>         FROM   store_sales limit 1)
>         UNION ALL 
>         (SELECT ws_quantity              AS c2, ws_item_sk c4
>         FROM   web_sales limit 1)
>         ) foo 
> GROUP  BY c1;
> {code}



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