Re: query optimization question

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От Tom Lane
Тема Re: query optimization question
Дата
Msg-id 25064.1075399504@sss.pgh.pa.us
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Ответ на Re: query optimization question  (Jack Coates <jack@lyris.com>)
Ответы Re: query optimization question  (Jack Coates <jack@lyris.com>)
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Jack Coates <jack@lyris.com> writes:
> That completed in 3.5 minutes on MS-SQL. I killed the query this morning
> after 15 hours on PostgreSQL 7.4. I tried a GROUP BY memberid_ HAVING
> variation, which completed in 59 seconds on MS-SQL. I killed it after 35
> minutes on PostgreSQL.

Hm.  I'd like to think that 7.4 would be competitive on grouping
queries.  What sort of plan did you get from it?

            regards, tom lane

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