如何在多对多电影和演员关系中选择具有五个或更多演员的所有电影？

Question

If I have a movie table, an actor table, and a movie_actor table, how do I select all movies with five or more actors? All I can do is an inner join on the table but this will return all results, not just the results with five or more actors.

Thanks!

Answer 1

select
  m.movie_name
from
  movies as m
left join
  actors as a
on
  m.movie_id = a.movie_id
group by
  m.movie_name
having
  count(*) >= 5;