From: Ted Allen <[EMAIL PROTECTED]>
To: Sidar López Cruz <[EMAIL PROTECTED]>
CC: pgsql-performance@postgresql.org
Subject: Re: [PERFORM] Very slow queries
Date: Tue, 30 Jan 2007 16:14:38 -0500
What indexes do those tables have? Any?
Yes:
TABLE ceroriesgo.patronos ADD CONSTRAINT patronos_pkey PRIMARY
KEY(numero_patrono);
INDEX salarios_numero_patrono_idx ON ceroriesgo.salarios
USING btree (numero_patrono);
Sidar López Cruz wrote:
Check this:
query: Delete From ceroriesgo.salarios Where numero_patrono Not In (Select
numero_patrono From ceroriesgo.patronos)
Seq Scan on salarios (cost=51021.78..298803854359.95 rows=14240077
width=6)
Filter: (NOT (subplan))
SubPlan
-> Materialize (cost=51021.78..69422.58 rows=1032980 width=25)
-> Seq Scan on patronos (cost=0.00..41917.80 rows=1032980
width=25)
These query took a day to finish, how or who can improove better
performance of my PostgreSQL.
_________________________________________________________________
Charla con tus amigos en línea mediante MSN Messenger:
http://messenger.latam.msn.com/
---------------------------(end of broadcast)---------------------------
TIP 4: Have you searched our list archives?
http://archives.postgresql.org
--
*Edward Allen*
Software Engineer
Black Duck Software, Inc.
[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
T +1.781.891.5100 x133
F +1.781.891.5145
http://www.blackducksoftware.com
_________________________________________________________________
Charla con tus amigos en línea mediante MSN Messenger:
http://messenger.latam.msn.com/
---------------------------(end of broadcast)---------------------------
TIP 7: You can help support the PostgreSQL project by donating at
http://www.postgresql.org/about/donate
