From: Josh Berkus <josh@agliodbs.com>
To: Charles Hauser <chauser@duke.edu>
To: PSQL_list <pgsql-sql@postgresql.org>
Subject: Re: help w/ constructing a SELECT
Date: Thu, 19 Sep 2002 16:40:50 -0700
Message-ID: <200209191640.50353.josh@agliodbs.com> (raw)
In-Reply-To: <1032446475.22067.29.camel@pandorina.biology.duke.edu>
References: <1032446475.22067.29.camel@pandorina.biology.duke.edu>
Charles,
> Having a problem with a query.
> I would like to construct a query which will return a list of all
> contigs which are comprised of clones whose 'read' = 'x' (read can be
> either 'x' or 'y').
It appears that you haven't formulated clearly what you want to get. I can
see 3 possibilities:
1. All contigs with one or more clones whose read = 'x' and those clones.
2. All contigs with one or more clones whose read = 'x' and all of those
contig's clones
3. All contigs where all clones have read = 'x'
Which do you want?
--
-Josh Berkus
Aglio Database Solutions
San Francisco
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To: pgsql-sql@postgresql.org
Cc: josh@agliodbs.com, chauser@duke.edu
Subject: Re: help w/ constructing a SELECT
In-Reply-To: <200209191640.50353.josh@agliodbs.com>
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