Mysql 时间格式转换
https://www.cnblogs.com/showker/archive/2010/03/18/1689054.html
Mysql-时间戳转换
https://www.cnblogs.com/showker/archive/2010/03/18/1689054.html
胡世聿的个人博客
https://www.cnblogs.com/showker/archive/2010/03/18/1689054.html
https://www.cnblogs.com/showker/archive/2010/03/18/1689054.html