Table: Customers
+-------------+---------+ +| Column Name | Type | ++-------------+---------+ +| id | int | +| name | varchar | ++-------------+---------+ +id is the primary key (column with unique values) for this table. +Each row of this table indicates the ID and name of a customer. ++ +
+ +
Table: Orders
+-------------+------+ +| Column Name | Type | ++-------------+------+ +| id | int | +| customerId | int | ++-------------+------+ +id is the primary key (column with unique values) for this table. +customerId is a foreign key (reference columns) of the ID from the Customers table. +Each row of this table indicates the ID of an order and the ID of the customer who ordered it. ++ +
+ +
Write a solution to find all customers who never order anything.
+ +Return the result table in any order.
+ +The result format is in the following example.
+ ++
Example 1:
+ +Input: +Customers table: ++----+-------+ +| id | name | ++----+-------+ +| 1 | Joe | +| 2 | Henry | +| 3 | Sam | +| 4 | Max | ++----+-------+ +Orders table: ++----+------------+ +| id | customerId | ++----+------------+ +| 1 | 3 | +| 2 | 1 | ++----+------------+ +Output: ++-----------+ +| Customers | ++-----------+ +| Henry | +| Max | ++-----------+ ++