On Wed, Jun 14, 2006 at 01:30:10PM +0200, B?sz?rm?nyi Zolt?n wrote: > Replacing random() with a true constant gives me index scan > even if it's hidden inside other function calls. E.g.: The database has no choice but to compute random() for every row; it's marked VOLATILE. -- Jim C. Nasby, Sr. Engineering Consultant jnasby@xxxxxxxxxxxxx Pervasive Software http://pervasive.com work: 512-231-6117 vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461