mysql创建用户和授权,mysql 授予用户创建用户的权限

1.创建用户

CREATE USER 'dog'@'localhost' IDENTIFIED BY '123456';

CREATE USER ‘用户名’@‘限制的IP地址’ IDENTIFIED BY ‘密码’;

2.授权

GRANT SELECT, INSERT ON test.user TO 'pig'@'%';#GRANT ALL ON *.* TO 'pig'@'%';FLUSH PRIVILEGES;#不重启MySQL服务的情况下直接生效

#privileges：用户的操作权限，如SELECT，INSERT，UPDATE等，如果要授予所的权限则使用ALL
#databasename：数据库名
#tablename：表名，如果要授予该用户对所有数据库和表的相应操作权限则可用表示，如.*
3.设置与更改用户密码

SET PASSWORD FOR 'username'@'host' = PASSWORD('newpassword');

4.撤销用户权限

REVOKE privilege ON databasename.tablename FROM 'username'@'host';

5.删除用户

DROP USER 'username'@'host';

6.限制ip

use mysql;update user set host = '125.93.252.175' where user = 'root' and host = '%';FLUSH PRIVILEGES;