Re: Sobre valor NULL

From: Alvaro Herrera <alvherre(at)commandprompt(dot)com>
To: Teofilo Oviedo <teus79(at)active(dot)com(dot)py>
Cc: Lista Postgres ES <pgsql-es-ayuda(at)postgresql(dot)org>
Subject: Re: Sobre valor NULL
Date: 2007-08-31 17:48:15
Message-ID: 20070831174815.GI8046@alvh.no-ip.org
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Teofilo Oviedo escribió:

> nuevamente hice otra consulta
> SELECT id_data, data FROM files WHERE id_data = 2928 AND data = NULL
>
> NO trajo resultados.

SELECT id_data, data FROM files WHERE id_data = 2928 AND data IS NULL

--
Alvaro Herrera http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support

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