> you have a two part part key on facility(country code, postal code), > right? Well, I'm glad you pointed it out, because I THOUGhT I had created it, but apparently I haven't -- I only noticed that it was missing after I listed all the other indexes. Looks like this query is one of the victims of a db structure corruption I suffered when transferring the schema over from development into production. (Well, that's my excuse and I'm sticking to it!) Thanks for all the help - I've reduced the execution time to 1/10 of its original time. Carlo
