2个数据表的交互

http://wenku.baidu.com/link?url=9FJWUPzpo6kEQIlmLC8b1XiTmjQK7J6zJglkq8rS6t55pNDLKQ0DzShjHnOZ772RxFYY-7Ps3xjDEiRvH_Q-SX_uo3b5NGGJqUgNxgU0MkO

原文地址:https://www.cnblogs.com/sz-xioabai/p/6422153.html