Re: POSTGRES TOO SLOW

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От Tom Lane
Тема Re: POSTGRES TOO SLOW
Дата
Msg-id 15881.979522350@sss.pgh.pa.us
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Ответ на POSTGRES TOO SLOW  ("Mario Sánchez" <mrxm@hotmail.com>)
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"Mario S�nchez" <mrxm@hotmail.com> writes:
> I recently installed postgres 7.0.1 on a Sun server with
> Solaris 5.7. It is working fine but when i try to do a join of two tables of
> size, let's say 130,000 records one and the other 200,000 it just freezes
> there .... and even if a wait for hours it doesn't give me an answer,

Well, if it's just doing a stupid nested-loop plan then it'd have to
consider all 26 billion cross-product tuples, which might indeed take
awhile.  What's the query, *exactly*?  What does EXPLAIN say is the
query plan for it?  What indexes have you created on the tables?

            regards, tom lane

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