[jira] [Updated] (TAJO-145) count(distinct column) should be supported.

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

     [ https://issues.apache.org/jira/browse/TAJO-145?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Hyunsik Choi updated TAJO-145:
------------------------------

    Attachment: TAJO-145.patch

I've uploaded the patch that enables Tajo to process 'count(distinct)' query in distributed manner.
                
> count(distinct column) should be supported.
> -------------------------------------------
>
>                 Key: TAJO-145
>                 URL: https://issues.apache.org/jira/browse/TAJO-145
>             Project: Tajo
>          Issue Type: Improvement
>          Components: planner/optimizer
>            Reporter: Hyunsik Choi
>            Assignee: Hyunsik Choi
>             Fix For: 0.2-incubating
>
>         Attachments: TAJO-145.patch
>
>
> The distinct included in count function should be supported.
> {code}
> select count(distinct col1) from table
> {code}

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