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https://issues.apache.org/jira/browse/HIVE-14959?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15583107#comment-15583107
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Ashutosh Chauhan commented on HIVE-14959:
-----------------------------------------

+1

> Support distinct with windowing when CBO is disabled
> ----------------------------------------------------
>
>                 Key: HIVE-14959
>                 URL: https://issues.apache.org/jira/browse/HIVE-14959
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 2.1.0
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>         Attachments: HIVE-14959.01.patch, HIVE-14959.patch
>
>
> For instance, the following query with CBO off:
> {code:sql}
> select distinct last_value(i) over ( partition by si order by i ),
>   first_value(t)  over ( partition by si order by i )
> from over10k limit 50;
> {code}
> will fail, with the following message:
> {noformat}
> SELECT DISTINCT not allowed in the presence of windowing functions when CBO 
> is off
> {noformat}



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