Re: Help with seq numbers...

From: javier wilson <javier(dot)wilson(at)gmail(dot)com>
To: Cristian Prieto <cristian(at)clickdiario(dot)com>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: Help with seq numbers...
Date: 2005-02-14 22:18:07
Message-ID: da884c20050214141824fb436e@mail.gmail.com
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On Mon, 14 Feb 2005 15:47:06 -0600, Cristian Prieto
<cristian(at)clickdiario(dot)com> wrote:
> > why don't you use a serial? that way you don't have to insert it? i
> > usually let postgresql take care of it, and you can use currval to
> > return a value.
>
> That's the trouble, I need a sp that returns the user id of the last
> inserted user, and 0 if the username or email (another unique index) is
> already in the database...

what about using a serial for userid, but checking first is the meail
or username
already exists?

so, in your sp, do a: select count(*) from users where email=$1 or username=$2
and then avoid the insert and just return 0?

or that would be to much load?

javier

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