oracle:order siblings by
http://blog.csdn.net/z69183787/article/details/20770709
oracle:join
http://www.cnblogs.com/kerrycode/p/5935704.html
mysql创建动态表名及参数处理:
http://blog.csdn.net/ljxfblog/article/details/41175923
http://www.cnblogs.com/xpyan/p/3975597.html
mysql:prepare语句
http://blog.csdn.net/zhxp_870516/article/details/8531378
mysql:存储过程和函数区别简介: