In porting from 7.4.19 to 8.3.1 I have found the following: 7.4.19: mwr=# select interval '1 day 15 hours 30 minutes' - interval '29 hours'; ?column? -------------------- @ 10 hours 30 mins (1 row) 8.3.1: mwr83=# select interval '1 day 15 hours 30 minutes' - interval '29 hours'; ?column? ---------------------------- @ 1 day -13 hours -30 mins (1 row) Is that right? I mean if you take 1 day (24 hours) and add -13 hours and -30 minutes, you get 10 hours and 30 minutes, but is it supposed to display that way? TIA -- Terry Lee Tucker Turbo's IT Manager Turbo, division of Ozburn-Hessey Logistics 2251 Jesse Jewell Pkwy NE Gainesville, GA 30501 Tel: (336) 372-6812 Fax: (336) 372-6812 Cell: (336) 404-6987 terry@xxxxxxxxxxxxx www.turbocorp.com