题解 | #使用子查询的方式找出属于Action分类的所有电影对应的title,description#

select a.title,a.description
from (select f.film_id,fc.category_id,title,description 
from film f 
join film_category fc 
on f.film_id = fc.film_id)a 
join category c 
on a.category_id = c.category_id
where name= 'Action'