Re: UNION question

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От Brandon Metcalf
Тема Re: UNION question
Дата
Msg-id Pine.LNX.4.58L.0907101133380.6574@cedar.geronimoalloys.com
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Ответ на Re: UNION question  ("Hartman, Matthew" <Matthew.Hartman@krcc.on.ca>)
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M == Matthew.Hartman@krcc.on.ca writes:

 M> > > From: pgsql-general-owner@postgresql.org [mailto:pgsql-general-
 M> > > owner@postgresql.org] On Behalf Of Brandon Metcalf
 M> > > Sent: Friday, July 10, 2009 12:16 PM
 M> >
 M> > Change it to this:

 M> Sorry, I forgot that you need to split the GROUP BY clause as well in a
 M> similar manner to the WHERE clause. And unless you have duplicate rows
 M> to eliminate, use UNION ALL rather than UNION for a speed increase.


Thanks.  Got it to work.

--
Brandon

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