create or replace function Add_Times(d1 in date,NewTime in date) return date is hh number; mm number; ss number; hours number; dResult date; begin -- 下面依次取出時、分、秒 select to_number(to_char(NewTime,'HH24')) into hh from dual; select to_number(to_char(NewTime,'MI')) into mm from dual; select to_number(to_char(NewTime,'SS')) into ss from dual; -- 換算出NewTime中小時總和，在一天的百分幾 hours := (hh + (mm / 60) + (ss / 3600))/ 24; -- 得出時間相加后的結(jié)果 select d1 + hours into dResult from dual; return(dResult); end Add_Times;
-- 測試用例 -- select Add_Times(sysdate,to_date('2004-12-06 03:23:00','YYYY-MM-DD HH24:MI:SS')) from dual
