Re: I can't wait too much: Total runtime 432478.44 msec - Mailing list pgsql-performance

I'd point at the following as being a sterling candidate for being a
cause of this being slow...

 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)    

May I suggest changing it to:

 AND cont_publicacion.fecha_publicacion = (SELECT 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
                  ORDER BY fecha_publicacion LIMIT 1)

That would get rid of the aggregate that's sitting deep in the query.
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Christopher Browne
(416) 646 3304 x124 (land)