Re: select slow?

>
>On Tuesday 30 March 2004 20:25, Jaime Casanova wrote:
>>hi all,
> >
> >
> > i have an amd athlon with 256 ram (i know, this is not a *real* server
>but
> > my tables are small)

>Nothing wrong with it - it's what I still use as my development server.
>
> > i'm using vb6 (win98) with pgsql-7.3.4 (rh8) trough the psqlodbc.
> >
> > when i do a select in took long to execute, here is an example
>
> > CREATE TABLE ICC_M_BANCO (
> > CodBanco SMALLINT NOT NULL,

> > select * from icc_m_banco where codbanco = 1;
> >
> > it tooks 13s from it's send until it's executed.
>
>Try:
> SELECT * FROM icc_m_banco WHERE codbanco = 1::smallint;
>
>By default, PG will treat a numeric constant as integer not smallint, so
>when
>it looks for an index it can't find one for integer, so scans instead.
>
>--
> Richard Huxton
> Archonet Ltd

There are no indexes yet, and the table is just 6 rows long so even if
indexes exists the planner will do a seq scan. that's my whole point 63m for
seq scan in 6 rows table is too much.

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