Re: FW: Index usage

From: "BBI Edwin Punzalan" <edwin@bluebamboo.ph>

> db=# explain analyze select date from chatlogs where date>='11/23/04' and
> date<'11/25/04';
> NOTICE:  QUERY PLAN:
>
> Seq Scan on chatlogs  (cost=0.00..24763.19 rows=9200 width=4) (actual
> time=0.45..4268.00 rows=23787 loops=1)
> Total runtime: 4282.81 msec
> ==============
>
> How come a query on the current date filter uses an index and the others
> does not?  This makes indexing to speed up queries quite difficult.

have you ANALYZED the table lately ?
what version postgres are you using ?

gnari