Question: List roles that have more than one employee. List the role description and number of employees.
Schema: create table roles (id varchar, PRIMARY KEY (id)); create table employees (id varchar, PRIMARY KEY (id))
SQL: select roles.role_description, count(employees.employee_id) from roles join employees on employees.role_code = roles.role_code group by employees.role_code having count(employees.employee_id) > 1