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To: "Jeremy Haile" <jhaile@fastmail.fm>
cc: pgsql-performance@postgresql.org
Subject: Re: Slow inner join, but left join is fast 
In-reply-to: <1168445842.5566.1168570133@webmail.messagingengine.com> 
References: <1168445842.5566.1168570133@webmail.messagingengine.com>
Comments: In-reply-to "Jeremy Haile" <jhaile@fastmail.fm>
	message dated "Wed, 10 Jan 2007 11:17:22 -0500"
Date: Wed, 10 Jan 2007 12:15:44 -0500
Message-ID: <10060.1168449344@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
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"Jeremy Haile" <jhaile@fastmail.fm> writes:
> I have a query made by joining two subqueries where the outer query
> performing the join takes significantly longer to run than the two
> subqueries.  

Please show EXPLAIN ANALYZE results, not just EXPLAIN.
Also, have you analyzed your tables recently?

			regards, tom lane