Oracle计算两天两个日期间相差的天数: 1 select to_date('19930411','yyyymmdd')-to_date('19890507','yyyymmdd') from dual; 相关文章: 2022-12-23 2021-12-25 2021-12-15 2022-01-05 2022-12-23 2021-12-03 2022-12-23