Which professionals have done at least two treatments? List the professional's id, role, and first name.
SELECT T1.professional_id ,  T1.role_code ,  T1.first_name FROM Professionals AS T1 JOIN Treatments AS T2 ON T1.professional_id  =  T2.professional_id GROUP BY T1.professional_id HAVING count(*)  >=  2
SELECT T1.professional_id ,  T1.role_code ,  T1.first_name FROM Professionals AS T1 JOIN Treatments AS T2 ON T1.professional_id  =  T2.professional_id GROUP BY T1.professional_id HAVING count(*)  >=  2
[{'professional_id': 4, 'role_code': 'Veterenarian', 'first_name': 'Vernice'}, {'professional_id': 6, 'role_code': 'Veterenarian', 'first_name': 'Ruben'}, {'professional_id': 8, 'role_code': 'Employee', 'first_name': 'Karley'}, {'professional_id': 9, 'role_code': 'Veterenarian', 'first_name': 'Monte'}, {'professional_id': 10, 'role_code': 'Employee', 'first_name': 'Domenica'}, {'professional_id': 14, 'role_code': 'Employee', 'first_name': 'Sigurd'}]