写法有很多种,例如下面的:
方法一:select * from dual where time between to_date('2012-06-18 00:00:00','yyyy-mm-dd hh24:mi:ss') and to_date('2012-06-18 23:59:59','yyyy-mm-dd hh24:mi:ss');
方法二:select * from dual where to_char(time,'yyyy-mm-dd')='2012-06-18';
方法三:select * from dual where trunc(time)=to_date('2012-06-18','yyyy-mm-dd');
当然楼主也可以按上面的先转换下日期的显示格式再查询撒,都可以的,呵呵!!!