Re: query optimization

Jack van Zanen wrote:

Hi If I am not mistaken, the second part of the union contains all rows that are in the first part of the union. just remove the first part.

Kind of. The first part is a join, the second isn't. I was going to suggest rewriting the subquery into a single: where ip.blockid in (...) or bu.blockid in (...) however that'll probably be slower, but def. worth a try. -- Postgresql & php tutorials http://www.designmagick.com/