MySQ permission control statement
1. Log in to the MySQL server using the root account:
mysql -u root -pmypass;
2. Switch to mysql Database instance:
use mysql;
3. View the user table:
select host, user, password from user;
4. Create a user "yang" that is only allowed to log in from the local machine, with a password of "yangpass":
create user 'yang'@'localhost' identified by 'yangpass';
5. Delete a local login user named "yang":
drop user 'yang'@'localhost';
6. Create a user "yang" that allows login from any host, with a password of "yangpass":
create user 'yang'@'%' identified by 'yangpass';
7. Change the password of user "yang" who is allowed to log in from any host. The new password is "yan":
set password for 'yang'@'%' = password('yan');
8. Change the password of user "yang" who is allowed to log in from any host. User, grant all permissions to the yang_test library:
grant all privileges on yang_test.* to 'yang'@"%";
9. Refresh permissions to make permission modifications effective:
flush privileges;
10. Create a user "remote" that allows login from any host, password For "app":
create user 'remote'@'%' identifed by 'app';
11. Grant CRUD permissions to the "t_weapon" table on the library "yang_test" to the "remote" user:
grant select, delete, update, insert on yang_test.t_weapon to 'remote';
12. Revoke user "yang" in " All permissions on the yang_test" library:
revoke all privileges on yang_test.* from 'yang'@'%';
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