mysql sql语句时间常用函数

1.给当前日期减一天
SELECT DATE_FORMAT(DATE_SUB(NOW(),INTERVAL 1 DAY),'%Y-%m-%d');
2.给当前日期加一天
SELECT DATE_FORMAT(DATE_ADD(NOW(),INTERVAL 1 DAY),'%Y-%m-%d');

3. MySQL 日期、时间相减函数：datediff(date1,date2), timediff(time1,time2)
MySQL datediff(date1,date2)：两个日期相减 date1 - date2，返回天数。
select datediff('2008-08-08', '2008-08-01'); -- 7
select datediff('2008-08-01', '2008-08-08'); -- -7
 4.
MySQL timediff(time1,time2)：两个日期相减 time1 - time2，返回 time 差值。
select timediff('2008-08-08 08:08:08', '2008-08-08 00:00:00'); -- 08:08:08
select timediff('08:08:08', '00:00:00'); -- 08:08:08

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来源： https://www.cnblogs.com/zxy-come-on/p/16344058.html