[jira] [Resolved] (TAJO-934) Multiple DISTINCT returns null grouping key value.

["Hyunsik Choi (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/TAJO-934?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyunsik Choi resolved TAJO-934.
-------------------------------

       Resolution: Fixed
    Fix Version/s: 0.9.0

committed.

> Multiple DISTINCT returns null grouping key value.
> --------------------------------------------------
>
>                 Key: TAJO-934
>                 URL: https://issues.apache.org/jira/browse/TAJO-934
>             Project: Tajo
>          Issue Type: Bug
>            Reporter: Hyoungjun Kim
>            Assignee: Hyoungjun Kim
>            Priority: Minor
>             Fix For: 0.9.0
>
>
> {noformat}
> default> select count * from table1;
> col1, col2, col3
> -------------------------
> a, b-1, null
> a, b-2, null
> a, b-2, null
> a, b-3, null
> a, b-3, null
> a, b-3, null
> default> select col1,
> count(distinct col2) as cnt1,
> count(distinct case when col3 is not null then col2 else null end) as cnt2
> from table1
> group by col1;
> col1,cnt1,cnt2
> -------------------------------
> a,  2,  1
> null,  1,  1
> {noformat}
> This query should return the below result.
> {noformat}
> col1,cnt1,cnt2
> -------------------------------
> a, 3, 1
> {noformat}



--
This message was sent by Atlassian JIRA
(v6.2#6252)