Re: [HACKERS] Index of a table is not used (in any case)

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От Doug McNaught
Тема Re: [HACKERS] Index of a table is not used (in any case)
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Msg-id m3d73fhup3.fsf@belphigor.mcnaught.org
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Ответ на Index of a table is not used (in any case)  (Reiner Dassing <dassing@wettzell.ifag.de>)
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Reiner Dassing <dassing@wettzell.ifag.de> writes:

> Hello PostgreSQl Users!
> 
> PostSQL V 7.1.1:
> 
> I have defined a table and the necessary indices.
> But the index is not used in every SELECT. (Therefore, the selects are
> *very* slow, due to seq scan on
> 20 million entries, which is a test setup up to now)

Perennial first question: did you VACUUM ANALYZE?

-Doug
-- 
Let us cross over the river, and rest under the shade of the trees.  --T. J. Jackson, 1863


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