select f.title, group_concat(a.first_name, ' ' ,a.last_name order by a.first_name, a.last_name separator ', ') as actors
from film f
inner join film_actor fa on fa.film_id = f.film_id
inner join actor a on a.actor_id = fa.actor_id
#inner join t1 on t1.film_id = f.film_id
group by f.film_id
order by actors desc