安装mysqlbrew install mysqlcheck是否安装成功，里面存在mysqlbrew list设置mysql安装的基本设置mysql.server start 启动mysql服务mysql_secure_installation mysql安装的基本设置$ mysql_secure_installationSecuring the MySQL server deployment.Connecting to MySQL using a blank password.VALIDATE PASSWORD PLUGIN can be used to test passwordsand improve security. It checks the strength of passwordand allows the users to set only those passwords which aresecure enough. Would you like to setup VALIDATE PASSWORD plugin?// 提示是否设置密码Press y|Y for Yes, any other key for No: y// 提示选择密码强度等级There are three levels of password validation policy:LOW Length >= 8MEDIUM Length >= 8, numeric, mixed case, and special charactersSTRONG Length >= 8, numeric, mixed case, special characters and dictionary filePlease enter 0 = LOW, 1 = MEDIUM and 2 = STRONG: 1Please set the password for root here.// 按照所选的密码强度要求设定密码New password: Re-enter new password: // 提示密码强度50,不符合要求重新设置密码Estimated strength of the password: 50 Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : y … Failed! Error: Your password does not satisfy the current policy requirementsNew password: Re-enter new password: // 提示密码强度100,符合要求继续进行Estimated strength of the password: 100 Do you wish to continue with the password provided?(Press y|Y for Yes, any other key for No) : yBy default, a MySQL installation has an anonymous user,allowing anyone to log into MySQL without having to havea user account created for them. This is intended only fortesting, and to make the installation go a bit smoother.You should remove them before moving into a productionenvironment.// 提示删除默认无密码用户Remove anonymous users? (Press y|Y for Yes, any other key for No) : ySuccess.Normally, root should only be allowed to connect from’localhost’. This ensures that someone cannot guess atthe root password from the network.// 提示禁止远程root登录Disallow root login remotely? (Press y|Y for Yes, any other key for No) : no… skipping.By default, MySQL comes with a database named ’test’ thatanyone can access. This is also intended only for testing,and should be removed before moving into a productionenvironment.// 提示删除默认自带的test数据库Remove test database and access to it? (Press y|Y for Yes, any other key for No) : yDropping test database…Success.Removing privileges on test database…Success.Reloading the privilege tables will ensure that all changesmade so far will take effect immediately.// 提示是否重新加载privilege tablesReload privilege tables now? (Press y|Y for Yes, any other key for No) : ySuccess.All done!使用新密码登录mysql$ mysql -u root -p其他常用操作数据库命令create database testmysql; 创建数据库show databases; 查询数据库drop database testmysql; 删除数据库use testmysql 选择数据库create table personTable (personID int, name varchar(20), gender varchar(10), primary key(personID)); 创建数据库表drop table personTable; 删除数据库表describe personTable; 查看数据库表alter table personTable rename newpersonTable; 修改数据库表名称alter table newpersonTable add sex int; 修改数据库表结构alter table newpersonTable drop gender; 删除数据库表字段