On Tue, May 23, 2006 at 12:16:01AM -0700, everest_sun wrote: > I have define a type arc,but i do not define the +(arc,arc) > operator,instead of +(arc,cstring)when i delete the +(arc,cstring),the > pgadmin3 tells me a error: > ERROR:operator does not exist:arc+arc Please provide a test case using psql. It's not very clear what you're actually doing here... -- 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