SQL> alter session set nls_date_format='yyyy-mm-dd hh24:mi:ss';
会话已更改。
SQL> select sysdate,sysdate+1/24,
2 sysdate+1/1440,
3 sysdate+1/86400
4 from dual;
SYSDATE SYSDATE+1/24 SYSDATE+1/1440 SYSDATE+1/86400
------------------- ------------------- ------------------- -------------------
2010-06-12 12:42:58 2010-06-12 13:42:58 2010-06-12 12:43:58 2010-06-12 12:42:59
SQL> select sysdate,
2 sysdate+60/(24*60*60) from dual;
SYSDATE SYSDATE+60/(24*60*6
------------------- -------------------
2010-06-12 12:44:35 2010-06-12 12:45:35
