1一步登入 mysql -uroot -p
2可以创建用户或指定用户查看哪个库
(1)GRANT ALL PRIVILEGES ON *.* TO 'deng'@'%' IDENTIFIED BY '123456' WITH GRANT OPTION; deng表示用户 %表示所有可以连接 123456密码
(2)grant all privileges on `数据库`.* to '密码'@'%' identified by '用户';
每一步成功 flush privileges;
3 SELECT DISTINCT CONCAT('User: ''',user,'''@''',host,''';') AS query FROM mysql.user; 查看用户
4DELETE FROM mysql.user WHERE User="用户";//删除用户