Leetcode-MySQL(183. 从不订购的客户)

183. 从不订购的客户:某网站包含两个表，Customers 表和 Orders 表。编写一个 SQL 查询，找出所有从不订购任何东西的客户。

# Write your MySQL query statement below
SELECT Customers.Name as Customers
FROM Customers
LEFT JOIN orders 
on Customers.Id <=>  orders.CustomerId
WHERE orders.CustomerId IS NULL;