Hi @Evandro_Souza,
Check what the user group ID of your administrators group is by running:
SELECT user_group_id FROM user_groups WHERE context_id=0 AND role_id=1;
It’ll probably give you a 1 back as a result. Then, you can grant that to your user:
INSERT INTO user_user_groups (user_id, user_group_id) VALUES (1234, 1);
…where 1234 is your user ID, and 1 is the user_group_id you got from the first query (probably a 1).
Regards,
Alec Smecher
Public Knowledge Project Team