| From: | Manfred Koizar <mkoi-pg(at)aon(dot)at> |
|---|---|
| To: | "Fernando Papa" <fpapa(at)claxson(dot)com> |
| Cc: | "Volker Helm" <vhelm(at)shcom(dot)de>, <pgsql-performance(at)postgresql(dot)org> |
| Subject: | Re: I can't wait too much: Total runtime 432478.44 msec |
| Date: | 2003-08-04 15:17:06 |
| Message-ID: | 13usivgqnvs076tgivbo0mubpke841d68v@4ax.com |
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| Lists: | pgsql-performance |
On Mon, 4 Aug 2003 12:02:46 -0300, "Fernando Papa" <fpapa(at)claxson(dot)com>
wrote:
> FROM
> cont_contenido
> ,juegos_config
> ,cont_publicacion
> ,(SELECT max(cp1.fecha_publicacion) as max_pub --change here
> FROM cont_publicacion cp1) a --change here
But this calculates the global maximum, not per id_instalacion,
id_contenido, and generar_vainilla as in
> AND cont_publicacion.fecha_publicacion = (SELECT max(cp1.fecha_publicacion)
> FROM cont_publicacion cp1
> WHERE cp1.id_instalacion = cont_publicacion.id_instalacion
> AND cp1.id_contenido = cont_publicacion.id_contenido
> AND cp1.generar_vainilla = cont_publicacion.generar_vainilla)
Servus
Manfred
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