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# 0183. Customers Who Never Order

<https://leetcode.com/problems/customers-who-never-order>

## Description

Table: `Customers`

```
+-------------+---------+
| Column Name | Type    |
+-------------+---------+
| Id          | int     |
| Name        | varchar |
+-------------+---------+
Id is the primary key column 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 for this table.
CustomerId is a foreign key 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 an SQL query to report all customers who never order anything.

Return the result table in **any order**.

The query 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       |
+-----------+
```

## ac

```java
```