Re: Order by email address by domain ?

From: Frank Bax <fbax(at)sympatico(dot)ca>
To: pgsql-sql(at)postgresql(dot)org
Cc: herve(at)elma(dot)fr
Subject: Re: Order by email address by domain ?
Date: 2001-05-11 01:53:01
Message-ID: 3.0.6.32.20010510215301.01ec9b50@pop6.sympatico.ca
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Why is everyone else suggesting new functions? This works (in 6.5.3):

ORDER BY lower(substring(email from position('@' in email)+1 )),
lower(email)

remove the lower() functions if you don't need them (I had mixed case
addresses).

I am guessing/assuming that it's cheaper to just use entire email address
in second key rather than extract before the '@' character.

Frank

At 08:37 PM 5/10/01 +0200, you wrote:
>Hi,
>
>I just want to order by a listing of email address by domain like :
>
>toto(at)aol(dot)com
>tutu(at)aol(dot)com
>toto(at)be(dot)com
>tutu(at)be(dot)com
>toto(at)yahoo(dot)com
>
>Is it possible and how ?
>
>Thanks !
>--
>Hervé Piedvache
>
>Elma Ingenierie Informatique
>6, rue du Faubourg Saint-Honoré
>F-75008 - Paris - France
>http://www.elma.fr
>Tel: +33-1-44949901
>Fax: +33-1-44949902
>Email: herve(at)elma(dot)fr
>
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