#获取一个范围内的随机数，例10~23之前的随机数如下 23-10+1=14
FLOOR(10 + (RAND() * 14))
update t_base_parent set last_updated_time=CONCAT(‘2019-04-11 ‘,FLOOR(10 + (RAND() * 14)),":",FLOOR(10 + (RAND() * 50)),":",FLOOR(10 + (RAND() * 50)))
where last_updated_time = ‘2019-04-11 08:45:58‘
原文：https://www.cnblogs.com/kgdxpr/p/11287759.html