SELECT f.f_id, f.f_parent, (
				SELECT COUNT(*)
				FROM fsb2_topics t
				LEFT JOIN fsb2_topics_read tr
					ON t.t_id = tr.t_id
						AND tr.u_id = 2
				WHERE t.f_id = f.f_id
					AND (tr.tr_last_time IS NULL OR tr.tr_last_time < t.t_last_p_time)
					AND t.t_last_p_time > 1160217581
					AND t.t_last_p_time > 1144672841
			) AS total
			FROM fsb2_forums f
			ORDER BY f.f_left