创建用户及密码mysql> create user 'zhao'@'loacl' identified by '123123';mysql> use mysql;

创建密文密码mysql> select password('123123');  #查看明文对应的密文

mysql> create user 'test01'@'localhost' identified by   #创建密文密码 'E56A114692FE0DE073F9A1DD68A00EEB9703F3F1';删除用户mysql> drop user 'test01'@'localhost';

修改已存在用户的密码set password =pssword('123123');修改其他用户密码set password for 'user02'@'localhost' = password('123abc');重命名用户mysql> rename user 'zz'@'host' to 'user01'@'host';

用户授权mysql> grant select,update on *.* to 'user01'@'localhost' identified by '123123'; #给用户user01添加对所有库和表拥有select,update权限

取消用户授权mysql> revoke update on *.* from 'user01'@'localhost'; #对user01用户取消update权限

用户忘记密码1.修改配置文件systamctl stop mysqld.service       #关掉数据库vim /etc/my.cnf skip-grant-tables               #在mysqld这段最下面插入(跳过验证)systamctl start mysqld.service      #开启数据库2.直接进入数据库修改密码mysql         #直接进入数据库mysql> update mysql.user set authentication_string =passwordd('123123');mysql> quit3.测试登录数据库[root@localhost data]# mysql -uroot -p123123......   省略部分内容mysql>   #成功进入mysql数据库