Re: Flat File unload/export/copy

From: "Obe, Regina" <robe(dot)dnd(at)cityofboston(dot)gov>
To: <steve(at)retsol(dot)co(dot)uk>, "PostGreSQL" <pgsql-novice(at)postgresql(dot)org>
Subject: Re: Flat File unload/export/copy
Date: 2008-09-12 15:31:36
Message-ID: 53F9CF533E1AA14EA1F8C5C08ABC08D204B3028F@ZDND.DND.boston.cob
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And why can't you use copy?

Something like below -

COPY (SELECT * FROM sometable WHERE somevalue LIKE '%') TO
'/path/to/textfile.csv'

WITH NULL As 'NULL' CSV HEADER QUOTE AS '"';

________________________________

From: pgsql-novice-owner(at)postgresql(dot)org
[mailto:pgsql-novice-owner(at)postgresql(dot)org] On Behalf Of Steve T
Sent: Friday, September 12, 2008 11:16 AM
To: PostGreSQL
Subject: [NOVICE] Flat File unload/export/copy

Is there a command that copies data from a table to a flat file for
specified selection criteria?
IE akin to a copy but not dumping a whole file?
If I'm about to do a major change to data in a table, I'd like to be
able to keep a copy of the data before the change (I know I can
Begin...rollback should things go wrong).

Is there a command that I've missed? (Informix had an 'UNLOAD TO blah
SELECT blah..' type command which presumably was proprietary).
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