MySQL常用指令
安装MySQL数据库：
brew install mysql删除MySQL数据库：
brew remove mysql
brew cleanup启动数据库服务(To have launchd start mysql now and restart at login):
brew services start mysql启动数据库服务(if you don't want/need a background service you can just run):
mysql.server start暂停数据库服务:
brew services stop mysql重新启动数据库服务
brew services restart mysql设置数据库初始密码
mysql_secure_installation登陆数据库
mysql -uroot
