1、新建用户
insert into mysql.user(Host,User,Password)values("localhost","leon",password("123456"));
2、为某用户授权访问某数据库
grant all privileges on test.* to leon@localhost identified by '123456'; #所有权限
grant select on test.* to leon@localhost identified by '123456'; #所有权限
3、刷新权限表
flush privileges;
4、更新用户密码
update mysql.user set password=password('123456') where user='leon-1' and host='localhost';
5、删除用户
delete from user mysql.user where user='leon-1' and host='localhost';
6、查看用户权限
show grants for leon@'localhost';