Which professor taught the most courses and what is the position of this person in the university?
professor refers to taughtBy.p_id; most courses refers to max(taughtBy.p_id); position refers to hasPosition
SELECT T1.p_id, T1.hasPosition FROM person AS T1 INNER JOIN taughtBy AS T2 ON T1.p_id = T2.p_id GROUP BY T1.p_id ORDER BY COUNT(T2.course_id) DESC LIMIT 1