datediff('2017-12-25',start_time)=6;
datediff(时间,时间) :计算日期,具体到天
TIMESTAMPDIFF(DAY,created_date,'2017-12-24')=1;
TIMESTAMPDIFF(day等参数,时间,时间):计算日期,具体到秒
datediff('2017-12-25',start_time)=6;
datediff(时间,时间) :计算日期,具体到天
TIMESTAMPDIFF(DAY,created_date,'2017-12-24')=1;
TIMESTAMPDIFF(day等参数,时间,时间):计算日期,具体到秒