不是,我这里结果是64
SQL> select 24*60*60*(to_date('2005-8-18 10:31:23','yyyy-mm-dd hh24:mi:ss')
2 - to_date('2005-8-18 10:30:19','yyyy-mm-dd hh24:mi:ss')) from dual;24*60*60*(TO_DATE('2005-8-1810
------------------------------
64
SQL> select 24*60*60*(to_date('2005-8-18 10:31:23','yyyy-mm-dd hh24:mi:ss')
2 - to_date('2005-8-18 10:30:19','yyyy-mm-dd hh24:mi:ss')) from dual;24*60*60*(TO_DATE('2005-8-1810
------------------------------
64
http://community.csdn.net/Expert/topic/4202/4202598.xml?temp=.8316919