select sysdate+1 from dual -- 明天
select sysdate+1/24 from dual -- 1個(gè)小時(shí)后
select sysdate+1/(24*60) from dual --1分鐘后
select sysdate+1/(24*60*60) from dual -- 一秒后
select sysdate+1/24 from dual -- 1個(gè)小時(shí)后
select sysdate+1/(24*60) from dual --1分鐘后
select sysdate+1/(24*60*60) from dual -- 一秒后