## mysql 安装 删除 使用
参考https://www.cnblogs.com/Michael1/p/5806384.html
https://www.cnblogs.com/startRuning/p/9628951.html
https://www.cnblogs.com/kumata/p/9125564.html
## cmd启动mysql:mysql -u root -p
## mysql 增加create_time字段,注意格式datetime和timestamp的区别
参考https://www.cnblogs.com/levia/p/11367993.html
https://www.cnblogs.com/acm-bingzi/p/mysql-current-timestamp.html
## Windows下安装MySQL
参考https://www.cnblogs.com/yunlongaimeng/p/12558638.html
## sql设置一个字段为空(null)
参考https://blog.csdn.net/Leo_01169/article/details/88826565
## 使用node查询MySQL数据库时,日期格式不对的问题
参考https://blog.csdn.net/chanlingmai5374/article/details/93190983
## sql与nosql对比
参考https://blog.csdn.net/weixin_43751710/article/details/104964319
## sql经典面试50题
参考https://blog.csdn.net/weixin_44747933/article/details/106324269
## sql中的窗口函数:lead,lag
参考https://blog.csdn.net/qq_41081716/article/details/108865011
## 报错: this is incompatible with sql_mode=only_full_group_by
参考https://blog.csdn.net/qq_42175986/article/details/82384160
## mysql8 新增用户
参考https://blog.51cto.com/abcd/2481013
## mysql8 创建、删除用户和授权、消权操作
参考https://blog.csdn.net/weixin_35067439/article/details/113159734
## 本地电脑连接阿里云服务器上搭建的MySQL数据库
参考https://ac-fun.blog.csdn.net/article/details/106968143