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Posted to dev@hive.apache.org by "Gang Tim Liu (JIRA)" <ji...@apache.org> on 2012/08/08 08:41:09 UTC
[jira] [Updated] (HIVE-3343) Hive: Query misaligned result for
Group by followed by Join with filter and skip a group-by result
[ https://issues.apache.org/jira/browse/HIVE-3343?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gang Tim Liu updated HIVE-3343:
-------------------------------
Attachment: hive-3343.patch
> Hive: Query misaligned result for Group by followed by Join with filter and skip a group-by result
> --------------------------------------------------------------------------------------------------
>
> Key: HIVE-3343
> URL: https://issues.apache.org/jira/browse/HIVE-3343
> Project: Hive
> Issue Type: Bug
> Components: Query Processor
> Reporter: Gang Tim Liu
> Assignee: Gang Tim Liu
> Attachments: hive-3343.patch
>
>
> This simple Hive query would generate wrong result:
> select a.key, b.k2, b.k3
> from src a
> join (
> select key,
> min(key) as k,
> min(key)+1 as k1,
> min(key)+2 as k2,
> min(key)+3 as k3
> from src
> group by key
> ) b
> on a.key=b.key and b.k1 < 5;
> 0 3.0 1.0
> 0 3.0 1.0
> 0 3.0 1.0
> 2 5.0 3.0
> The right result is:
> 0 2.0 3.0
> 0 2.0 3.0
> 0 2.0 3.0
> 2 4.0 5.0
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