Database: cre_Doc_Tracking_DB
Question: What are the employee ids of the employees whose role name is "Human Resource" or "Manager"?
SQL:
SELECT T1.employee_id FROM Employees AS T1 JOIN ROLES AS T2 ON T1.role_code  =  T2.role_code WHERE T2.role_name  =  "Human Resource" OR T2.role_name  =  "Manager"