Re: Very specialised query

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От Matthew Wakeling
Тема Re: Very specialised query
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Msg-id alpine.DEB.2.00.0903301125020.21772@aragorn.flymine.org
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Ответ на Re: Very specialised query  (Dimitri Fontaine <dfontaine@hi-media.com>)
Список pgsql-performance
On Fri, 27 Mar 2009, Dimitri Fontaine wrote:
> Maybe it's just that I didn't devote enough time to reading your detailed
> explanation above, but this part sounds like it could be done in an aggregate
> you'd use in a correlated subquery containing the right ORDER BY, couldn't
> it?
> http://www.postgresql.org/docs/8.3/interactive/sql-createaggregate.html

Can you return multiple rows from an aggregate function?

Matthew

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