NOT EXISTS - SQL查询

Question

我的sql数据库中有两个表

我需要编写SQL查询，找到没有租借任何电影的客户。查看表格，这些客户的ID为3和4

我试过这个，但它没有用。我似乎在创建查询时缺少简单的逻辑

SELECT name, last_Name, movie_name
FROM Customers, Rented_movies
WHERE Rented_movies.customer_id = Customers.customer_id
AND NOT EXISTS(customer_id);

有任何帮助吗？非常感谢！

谢谢

Answer 1

尝试这种方式

SELECT name, last_Name, movie_name FROM Customers WHERE customer_id NOT IN (SELECT customer_id FROM Rented_movies)

Answer 2

试试这个：

 SELECT * FROM Customers WHERE customer_id NOT IN (SELECT customer_id FROM Rented_movies);

如果必须使用NOT EXIST语句，那么这也应该有效：

SELECT * FROM Customers C
WHERE NOT EXISTS(SELECT * FROM Rented_movies WHERE customer_id = C.customer_id);