参考链接：
https://www.cnblogs.com/tangyb/p/8971658.html
1、以管理员身份运行cmd
打开C:/windows/system32/ 找到cmd.exe 右键
2、由于找不到vcruntime140_1.dll,无法继续执行代码
https://blog.csdn.net/littlehaes/article/details/104127787
3、如果不以管理员身份运行安装时候会报如下错误
Install/Remove of the service denied
https://blog.csdn.net/lxpbs8851/article/details/14161935/
4、cmd安装MySQL出现：The current server installed
https://blog.csdn.net/ITarmi/article/details/107082119
5、navicat连接报错：1251 -Client does not support authentication pro
mysql -u root -p
ALTER USER root@localhost IDENTIFIED WITH mysql_native_password BY '123456';
flush privileges;