hive-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Amareshwari Sriramadasu (JIRA)" <>
Subject [jira] Updated: (HIVE-474) Support for distinct selection on two or more columns
Date Tue, 26 Oct 2010 08:01:26 GMT


Amareshwari Sriramadasu updated HIVE-474:

    Attachment: patch-474-2.txt

bq. Not a good idea to ignore skew for multiple distincts.
I agree.

Updated patch throws error when there are multiple distincts with skew in data. Also, adds
negative testcases.

> Support for distinct selection on two or more columns
> -----------------------------------------------------
>                 Key: HIVE-474
>                 URL:
>             Project: Hive
>          Issue Type: Improvement
>          Components: Query Processor
>            Reporter: Alexis Rondeau
>            Assignee: Amareshwari Sriramadasu
>         Attachments: hive-474.0.4.2rc.patch, patch-474-1.txt, patch-474-2.txt, patch-474.txt
> The ability to select distinct several, individual columns as by example: 
> select count(distinct user), count(distinct session) from actions;   
> Currently returns the following failure: 
> FAILED: Error in semantic analysis: line 2:7 DISTINCT on Different Columns not Supported

This message is automatically generated by JIRA.
You can reply to this email to add a comment to the issue online.

View raw message