On Thu, Sep 08, 2005 at 07:19:34PM -0600, Cristian Prieto wrote: > Maybe the first 1000 rows based in the primary index???? No, this is not a satisfactory answer, because 1. it's possible that there's no primary key at all, or 2. said index may not get used for the execution of the update. Maybe something else I'm forgetting right now. This has been discussed before, and rejected. Please see the archives. -- Alvaro Herrera -- Valdivia, Chile Architect, www.EnterpriseDB.com "Java is clearly an example of a money oriented programming" (A. Stepanov) ---------------------------(end of broadcast)--------------------------- TIP 4: Have you searched our list archives? http://archives.postgresql.org