http://jingyan.baidu.com/article/da1091fbd166ff027849d687.html
http://www.imooc.com/article/1150
http://www.php100.com/html/webkaifa/database/Mysql/2013/0316/12223.html
mysql数据库优化
原文：http://www.cnblogs.com/shixm/p/5450750.html
