mysql 时间

http://www.blogjava.net/chenlb/archive/2012/03/12/128925.html

http://www.thinksaas.cn/group/topic/120/

http://blog.csdn.net/chenjianhui2122/article/details/8205012

http://www.linuxidc.com/Linux/2012-09/71430.htm

http://www.linuxidc.com/Linux/2012-09/71430.htm