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From: Bruno Wolff III <bruno@wolff.to>
To: Fredrik Wendt <fredrik@csbnet.se>
Cc: pgsql-sql@postgresql.org
Subject: Re: ORDER BY TIMESTAMP_column ASC, NULL first
Date: Thu, 3 Jun 2004 12:31:01 -0500
Message-ID: <20040603173101.GA5022@wolff.to> (raw)
In-Reply-To: <20040212100626.GA21864@csbnet.se>
References: <20040212100626.GA21864@csbnet.se>

On Thu, Feb 12, 2004 at 11:06:26 +0100,
  Fredrik Wendt <fredrik@csbnet.se> wrote:
> 
> The query to use would be,
> 	
> SELECT ip.id FROM IPv4Address ip ORDER BY assignedAt ASC LIMIT 1;
> 
> with the exception that this returns rows with NULL at the end, instead
> of at the beginning which is what I'd like.
> 
> How do achieve this with one query? I'm using Postgres 7.4.

SELECT ip.id FROM IPv4Address ip ORDER BY assignedAt IS NULL,
  assignedAt ASC LIMIT 1;



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