From: Bryce W Nesbitt <bryce1@obviously.com>
To: pgsql-sql@postgresql.org
Subject: casting character varying to integer - order by numeric sort
Date: Wed, 19 Oct 2005 18:01:17 -0700
Message-ID: <4356EC5D.4080706@obviously.com> (raw)
How can I force a character field to sort as a numeric field?
I've got something like this:
Postgres=> SELECT username,last_name
FROM eg_member ORDER BY username;
----------+-----------
0120 | Foley
1 | Sullivan
10 | Guest
11 | User
(5 rows)
(I can't change the field type). I tried:
SELECT username,last_name
FROM eg_member ORDER BY username::integer;
But postgres 7 rejects this with "ERROR: cannot cast type character
varying to integer". Is there a way to force numeric sort order? I
tried a variety of functions, such as to_char() and convert() without
any luck. Thanks for your insight!
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To: pgsql-sql@postgresql.org
Cc: bryce1@obviously.com
Subject: Re: casting character varying to integer - order by numeric sort
In-Reply-To: <4356EC5D.4080706@obviously.com>
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