SELECTDATEDIFF( Second, '2009-8-25 12:15:12', '2009-9-1 7:18:20') --返回相差秒數 SELECTDATEDIFF( Minute, '2009-9-1 6:15:12', '2009-9-1 7:18:20') --返回相差分鍾數 SELECTDATEDIFF( Day, '2009-8-25 12:15:12','2009-9-1 7:18:20')--返回相差的天數 SELECTDATEDIFF( Hour, '2009-8-25 12:15:12', '2009-9-1 7:18:20')--返回相差的小時 SELECTCONVERT(INT,DATEDIFF(Day, '2009-8-25 12:15:12', '2009-9-1 7:18:20')*24*60)+CONVERT(INT,DATEDIFF(Hour,'2009-8-25 12:15:12','2009-9-1 7:18:20')*60)+CONVERT(INT,DATEDIFF(Minute, '2009-9-1 6:15:12', '2009-9-1 7:18:20'))--求兩個時間的相差的分鍾數