Skip site navigation (1) Skip section navigation (2)

Re: Nested Loop

From: Ragnar <gnari(at)hive(dot)is>
To: Gauri Kanekar <meetgaurikanekar(at)gmail(dot)com>
Cc: pgsql-performance(at)postgresql(dot)org
Subject: Re: Nested Loop
Date: 2007-03-27 11:47:13
Message-ID: 1174996033.1153.68.camel@localhost.localdomain (view raw or flat)
Thread:
Lists: pgsql-performance
On þri, 2007-03-27 at 16:13 +0530, Gauri Kanekar wrote:
>  
> SELECT rs.id AS sid, rs.name AS sname, rc.id AS campid, rc.name AS
> campname, rc.rev_type AS revtype, rc.act_type AS actntype, ra.id AS
> advid, ra.name AS advname, rpt_chn.id AS chanid, rpt_chn.name AS
> channame, rpt_cre.dn AS dn, SUM(rm.imdel) AS impression, SUM(rm.cdel)
> AS click, rd.sqldate AS date FROM rm, rn CROSS JOIN rd, ra, rs, rc,
> rpt_chn, rpt_cre WHERE rm.date_key = rd.key AND rm.net_key = rn.key
> AND rm.adv_key = ra.key AND rm.camp_key = rc.key AND rm.s_key = rs.key
> AND rm.chn_key = rpt_chn.key AND rm.cre_key = rpt_cre.key AND
> ra.name != 'SYSTEM' AND rd.sqldate BETWEEN '12/1/2006' AND
> '12/30/2006' AND ( rn.id IN ( 607 ) ) GROUP BY rd.sqldate , rs.id,
> rs.name, ra.id, ra.name, rc.id, rc.name, rc.rev_type , rc.act_type,
> rpt_chn.id, rpt_chn.name, rpt_cre.dn;

you did not answer other questions, so do this:
1) VACUUM ANALYZE your database
2) set these in your postgresql.conf:
enable_seqscan = true
join_collapse_limit = 8
3) restart postgresql
4) do the EXPLAIN ANALYZE again, and send us it's output

gnari




In response to

pgsql-performance by date

Next:From: Merlin MoncureDate: 2007-03-27 13:06:38
Subject: Re: [GENERAL] ERROR: out of shared memory
Previous:From: Gauri KanekarDate: 2007-03-27 10:43:31
Subject: Re: Nested Loop

Privacy Policy | About PostgreSQL
Copyright © 1996-2014 The PostgreSQL Global Development Group