index not used - Mailing list pgsql-performance

From Enrico Weigelt
Subject index not used
Date
Msg-id 20050421190543.GA16548@nibiru.borg.metux.de
Whole thread Raw
Responses Re: index not used
Re: index not used
List pgsql-performance
Hi folks,


I'm doing a simple lookup in a small table by an unique id, and I'm
wondering, why explains tells me seqscan is used instead the key.

The table looks like:

    id    bigint        primary key,
    a    varchar,
    b    varchar,
    c     varchar

and I'm quering: select * from foo where id = 2;

I've got only 15 records in this table, but I wanna have it as
fast as possible since its used (as a map between IDs and names)
for larger queries.


thx
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