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Date: Sat, 10 Jan 2009 18:45:59 -0800 (PST)
From: "Prasad Chakka (JIRA)" <jira@apache.org>
To: hive-dev@hadoop.apache.org
Subject: [jira] Updated: (HIVE-25) [Hive] cluster by does not work with
 column aliasing
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     [ https://issues.apache.org/jira/browse/HIVE-25?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Prasad Chakka updated HIVE-25:
------------------------------

    Attachment: hive-25-code-changes.patch

Attached is the proposed code changes. Fix for this seems to be more complex that I originally thought.

This fix will work for below type of queries. The fix attempts to make all column references with in a parenthesis refer to tables specified in the from clause.

SELECT x.*  FROM SRC x CLUSTER BY x.key;

SELECT y.* from (SELECT x.* FROM SRC x CLUSTER BY key) y where y.key = 20;

SELECT y.* from (SELECT x.* FROM SRC x CLUSTER BY x.key) y where y.key = 20;

Would appreciate your thoughts on this.


> [Hive] cluster by does not work with column aliasing
> ----------------------------------------------------
>
>                 Key: HIVE-25
>                 URL: https://issues.apache.org/jira/browse/HIVE-25
>             Project: Hadoop Hive
>          Issue Type: Bug
>          Components: Query Processor
>            Reporter: Namit Jain
>            Assignee: Prasad Chakka
>            Priority: Critical
>         Attachments: hive-25-code-changes.patch
>
>
>                     SELECT b.*  
>                     FROM                                                 
>                     (                                                    
>                       SELECT x.col1, x.col2
>                       FROM tmp x              
>                       WHERE x.col2= 10
>                       CLUSTER BY col2                                  
>                     ) b"
> The above query works, but if I change the cluster by to:
> CLUSTER BY x.col2, 
> it croaks.

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