Re: POSTGRESQL Optimizer

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От
Tycho Fruru
Тема
Re: POSTGRESQL Optimizer
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Msg-id
1024664462.1229.12.camel@kungfoo.conostix.com
Ответ на
POSTGRESQL Optimizer (Tourtounis Sotiris)
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POSTGRESQL Optimizer Tourtounis Sotiris <tourtoun@csd.uoc.gr>
Re: POSTGRESQL Optimizer Tycho Fruru <tycho@fruru.com>
On Fri, 2002-06-21 at 14:45, Tourtounis Sotiris wrote:
> I wonder how i can enforce the PostgreSQL optimizer in order to use the
> indexes in cases of SQL queries with comparison (<,>) and not equality. I
> create a table with 4 attributes, the two of them are types of integer8 in
> PostgreSQL and i create to those 2 indexes (which by default are B+trees).
> However they didn't work. I would appreciate any comment.
try

select * from foo where bar > '12345';

insted of

select * from foo where bar > 12345;

did you vacuum analyze before ?

Cheers
Tycho

-- 
Tycho Fruru			                tycho@fruru.com
"Prediction is extremely difficult. Especially about the future."
  - Niels Bohr
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