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https://issues.apache.org/jira/browse/HIVE-13242?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15197879#comment-15197879
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Ashutosh Chauhan commented on HIVE-13242:
-----------------------------------------

Can you also add a negative test cases for:
{code}
 select count(distinct last_value(i) over ( partition by si order by i )) from 
over10k;
select distinct last_value(i) over ( partition by si order by i ),  distinct 
first_value(t)  over ( partition by si order by i ) from over10k ;
{code}

and positive test for:
{code}
select distinct last_value(i) over ( partition by si order by i ),  
first_value(t)  over ( partition by si order by i ) from over10k ;
{code}

> DISTINCT keyword is dropped by the parser for windowing
> -------------------------------------------------------
>
>                 Key: HIVE-13242
>                 URL: https://issues.apache.org/jira/browse/HIVE-13242
>             Project: Hive
>          Issue Type: Bug
>    Affects Versions: 2.1.0
>            Reporter: Jesus Camacho Rodriguez
>            Assignee: Jesus Camacho Rodriguez
>         Attachments: HIVE-13242.patch
>
>
> To reproduce, the following query can be used:
> {noformat}
> select distinct first_value(t) over ( partition by si order by i, b ) from 
> over10k limit 100;
> {noformat}
> The distinct keyword is ignored and duplicates are produced.



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