oracle将时间加一天，加小时，加分，加秒

加一天

select to_date('2019-08-15 22:03:10','yyyy-mm-dd hh24:mi:ss')+1 next_day from dual;

加一小时

select to_date('2019-08-15 22:03:10','yyyy-mm-dd hh24:mi:ss')+1/24 next_hour from dual;

加一分钟

select to_date('2019-08-15 22:03:10','yyyy-mm-dd hh24:mi:ss')+1/(24*60) next_minute from dual;

加一秒

select to_date('2019-08-15 22:03:10','yyyy-mm-dd hh24:mi:ss')+1/(24*60*60) next_second from dual;