我正在SQP Workbench中运行此代码。是Sakila数据库。我对SQL查询非常陌生，所以请帮忙。
查找租借电影的演员少于5位的客户。返回客户的名字，客户的姓氏，电影标题和电影中的演员人数。
select customer_id,film_id
from
customer c inner join payment p on c.customer_id=p.customer_id
inner
join rental r on p.rental_id=r.rental_id
inner join inventory i on r.investory_id=i.investory_id
inner join film_category fc on i.film_id=fc.film_id
inner join category c on fc.category_id=c.category_id
inner join film f on fc.film_id=f.film_id
where film_id in(select film_id from(select film_id,count(actor_id) as s
from
customer c inner join payment p on c.customer_id=p.customer_id
inner join rental r on p.rental_id=r.rental_id
inner join inventory i on r.investory_id=i.investory_id
inner join film_category fc on i.film_id=fc.film_id
inner join category c on fc.category_id=c.category_id
fc.film_id = f.film_id上的内部连接胶片f 通过具有count（actor_id）<5）的film_id分组；
