From: Andreas Joseph Krogh <andreak@officenet.no>
To: Bruno Wolff III <bruno@wolff.to>
Cc: pgsql-sql@postgresql.org
Subject: Re: Making NULL entries appear first when ORDER BY <field> ASC
Date: Wed, 16 Feb 2005 09:39:06 +0000
Message-ID: <200502160939.27431.andreak@officenet.no> (raw)
In-Reply-To: <20050216044735.GA2343@wolff.to>
References: <200502160055.59288.andreak@officenet.no>
<20050216044735.GA2343@wolff.to>
On Wednesday 16 February 2005 04:47, Bruno Wolff III wrote:
> > Now, as you see, touples with NULL in the "start_time"-field appear
> > "after" the others. I would like to make all entries where start_time IS
> > NULL apear *before* all the others. Any idea how to achieve this?
>
> SELECT start_date, start_time, end_time, title
> FROM onp_crm_activity_log
> WHERE start_date IS NOT NULL
> ORDER BY start_date ASC, start_time IS NOT NULL ASC, start_time ASC;
>
> This assumes you want the NULL start times first within a particular
> date. Otherwise change the order in the ORDER BY clause.
Thanks! This si, IMO, the cleanest solution as it doesn't involve any
COALESCE.
--
Andreas Joseph Krogh <andreak@officenet.no>
Senior Software Developer / Manager
gpg public_key: http://dev.officenet.no/~andreak/public_key.asc
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To: pgsql-sql@postgresql.org
Cc: andreak@officenet.no, bruno@wolff.to
Subject: Re: Making NULL entries appear first when ORDER BY <field> ASC
In-Reply-To: <200502160939.27431.andreak@officenet.no>
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