MySQL中如何操作日期的详解

select date_sub(now(), interval 1 day);        #当前日期天数-select date_sub(now(), interval -1 day);       

#当前日期天数+select date_sub(now(), interval 1 hour);

select date_sub(now(), interval 1 minute)select date_sub(now(), interval 1 second)select date_sub(now(), interval 1 microsecond)

select date_sub(now(), interval 1 week)select date_sub(now(), interval 1 month)select date_sub(now(), interval 1 quarter)

select date_sub(now(), interval 1 year);

datediff(date1, date2);  #date1 - date2

timediff(time1, time2);  #time1 - time2

time1和time2的格式必须要一样，返回时间差

select str_to_date('11/09/2014', '%m/%d/%Y'); -- 2014-11-09