DCL-管理用户
查询用户
use mysql;
select * from user;
创建用户
create user '用户名'@'主机名' identified by '密码';
修改用户密码
alter user '用户名'@'主机名' identidied with mysql_native_password by '新密码';
删除用户
drop user '用户名'@'主机名';
创建用户test,只能够再当前主机localhost访问,密码为123456
create user 'test'@'localhost' identified by '123456';
创建用户test1,可以再任意主机访问该数据库,密码为123456
create user 'test1'@'%' identified by '123456';
修改用户test的密码为1234
alter user 'test'@'localhost' identified with mysql_native_password by '1234';
删除用户test
drop user 'test'@'localhost';