SQL-查找ADAM GRANT代理过的所有电影的电影名称和语言名称

问题描述

我在用SQL来思考这样的问题时遇到了很多麻烦.我不知道应该如何构造查询.我应该在film_actor上加入film，然后在actor上加入吗?还是我应该反过来做?

I'm having a ton of trouble thinking in terms of SQL on problems like this. I don't know how I should be structuring my queries. Should I be joining film on film_actor and then join that on actor? Or should I do it the other way around?

我所能做的就是得到一个查询，该查询将actor和film_actor联接在一起，名称为ADAM GRANT，但是我不知道该从哪里去.

All I've been able to do is get a query that joins actor and film_actor with the name ADAM GRANT but I'm lost on where to go from here.

SELECT * FROM (actor JOIN film_actor ON actor.actor_id=film_actor.actor_id) WHERE first_name = 'ADAM' AND last_name = 'GRANT'

我尝试做一些事情来将这些结果与电影结合起来，但是我在语法上遇到了问题.

I've tried doing something to join these results with films, but I'm getting issues with my syntax.

SELECT title FROM (actor JOIN film_actor ON actor.actor_id=film_actor.actor_id) WHERE first_name = 'ADAM' AND last_name = 'GRANT' JOIN film ON film.actor_id = actor_id

推荐答案

您应该使用内部联接

SELECT 
   film.title
  , language.name
FROM film
INNER JOIN language on film.language_id = language.language_id
INNER JOIN film_actor on film.film_id = film_actor.film_id
INNER JOIN actor on actor.actor_id = film_actor.actor_id
WHERE actor.first_name = 'ADAM'
AND actor.last_name ='GRANT'

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