DCL数据控制语言

查询用户

#用户信息保存在数据库mysql的user表中
use mysql;
select * from user;

创建用户

create user '用户名'@'主机名' identified by '密码';

在主机localhost创建一个新用户

create user 'hikari39'@'localhost' identified by '123456';

创建一个新用户, 可以在任意主机上访问数据库

# %可以匹配任意主机
create user 'hikaru44'@'%' identified  by '123456';

修改用户密码

alter user '用户名'@'主机名' identified with mysql_native_password by '新密码';

修改用户的密码为12345

alter user 'hikari39'@'localhost' identified with mysql_native_password by '12345';

删除用户

drop user '用户名'@'主机名';

删除

drop user 'hikari39'@'localhost';