[teiid-issues] [JBoss JIRA] Created: (TEIID-1250) Allow usage of select expressions in order by, even with group by/distinct.

Tue Sep 7 15:01:52 EDT 2010

Allow usage of select expressions in order by, even with group by/distinct.
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                 Key: TEIID-1250
                 URL: https://jira.jboss.org/browse/TEIID-1250
             Project: Teiid
          Issue Type: Feature Request
          Components: Query Engine
    Affects Versions: 7.1
            Reporter: Steven Hawkins
            Assignee: Steven Hawkins
            Priority: Minor
             Fix For: 7.2

We currently do not allow order by keys to reference anything other select aliases if a simple query uses distinct or group by.  We could allow for the projected expressions to resolve as well.

For example:
select x as y from t group by x order by x
instead of order by y

Mondrian generates queries of this form, although I'm not sure if that's something that could be customized through Mondrian.

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