Question: Show the employee ids for all employees with role name "Human Resource" or "Manager".
Schema: create table employees (employee_id varchar, role_code varchar, PRIMARY KEY (employee_id)); create table roles (role_code varchar, role_name varchar, PRIMARY KEY (role_code))
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"