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From "Zheng Shao (JIRA)" <>
Subject [jira] Commented: (HIVE-287) count distinct on multiple columns does not work
Date Fri, 09 Jul 2010 17:46:57 GMT


Zheng Shao commented on HIVE-287:

The plan looks good to me.

Just one comment: I think we should change the comment/class name for GenericUDAFResolver2.
 Let's explicitly say GenericUDAFResolver2 is for UDAFs that want to have control over whether
DISTINCT or * should be treated differently. For normal UDAFs, they should still inherite
from GenericUDAFResolver.

Does that sound OK?

> count distinct on multiple columns does not work
> ------------------------------------------------
>                 Key: HIVE-287
>                 URL:
>             Project: Hadoop Hive
>          Issue Type: Bug
>          Components: Query Processor
>            Reporter: Namit Jain
>            Assignee: Arvind Prabhakar
>         Attachments: HIVE-287-1.patch, HIVE-287-2.patch, HIVE-287-3.patch, HIVE-287-4.patch,
HIVE-287-5-branch-0.6.patch, HIVE-287-5-trunk.patch
> The following query does not work:
> select count(distinct col1, col2) from Tbl

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