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Date: Fri, 17 Aug 2007 15:44:30 -0700 (PDT)
From: "Kathey Marsden (JIRA)" <jira@apache.org>
To: derby-dev@db.apache.org
Subject: [jira] Closed: (DERBY-765) Valid query fails with ERROR X0A00: The
 select list mentions column 'A' twice...
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     [ https://issues.apache.org/jira/browse/DERBY-765?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kathey Marsden closed DERBY-765.
--------------------------------


> Valid query fails with ERROR X0A00: The select list mentions column 'A' twice...
> --------------------------------------------------------------------------------
>
>                 Key: DERBY-765
>                 URL: https://issues.apache.org/jira/browse/DERBY-765
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.2.1.6
>            Reporter: Kathey Marsden
>            Assignee: Rick Hillegas
>            Priority: Minor
>             Fix For: 10.2.2.0
>
>
> The following query is valid but fails with 10.2 
> ij> create table bug280
> (
>    a int,
>    b int
> );
> 0 rows inserted/updated/deleted
> ij> insert into bug280( a, b )
> values ( 1, 1 ), ( 1, 2 ), ( 1, 3 ), ( 2, 1 ), ( 2, 2 );
> 5 rows inserted/updated/deleted
> ij> select a+1 as a, a+1 as a from bug280 group by a;
> ERROR X0A00: The select list mentions column 'A' twice. This is not allowed in queries with GROUP BY or HAVING clauses. Try aliasing one of the conflicting columns to a unique name.

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