| From: | <kaiq(at)realtyideas(dot)com> |
|---|---|
| To: | "Grembowicz, Kenneth" <GrembowiczK(at)NAVO(dot)NAVY(dot)MIL> |
| Cc: | "'pgsql-sql(at)postgresql(dot)org'" <pgsql-sql(at)postgresql(dot)org> |
| Subject: | Re: Subqueries using IN |
| Date: | 2000-04-11 19:28:16 |
| Message-ID: | Pine.LNX.4.10.10004111426480.15163-100000@picasso.realtyideas.com |
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| Thread: | |
| Lists: | pgsql-sql |
On Tue, 11 Apr 2000, Grembowicz, Kenneth wrote:
> I have a database with approximately 2 millions rows. I have constructed a
> select statement with one subquery and it is EXTREMELY slow. If the
> conditions return on record, it takes almost 5 minutes. Practical usage
> returns a couple thousand records, but as you would guess I can't wait
> days....ANY SUGGESTIONS??????????????
use "exists", instead of in clause. see the archive of this list, there
are plenty of examples.
Kai
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