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To: "Victor Yegorov" <viy@pirmabanka.lv>
Cc: "PostgreSQL SQL List" <pgsql-sql@postgresql.org>
Subject: Re: Optimizing view 
In-reply-to: <20030310135231.GA3791@pirmabanka.lv> 
References: <20030310135231.GA3791@pirmabanka.lv>
Comments: In-reply-to "Victor Yegorov" <viy@pirmabanka.lv>
	message dated "Mon, 10 Mar 2003 15:52:31 +0200"
Date: Mon, 10 Mar 2003 10:14:27 -0500
Message-ID: <17355.1047309267@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
X-Archive-Number: 200303/243
X-Sequence-Number: 12283

"Victor Yegorov" <viy@pirmabanka.lv> writes:
> I'm running `PostgreSQL 7.2 on i586-pc-linux-gnu, compiled by GCC 2.95.3'
> and have some problems with queries on a view.

Try 7.3.  7.2 won't push down WHERE conditions into a union.

BTW, if the archive table is disjoint from the main table, you'd be
better off using UNION ALL instead of UNION.

			regards, tom lane