Leetcode 183. Customers who Never Order

183. Customers who Never orderQuestion Editorial Solution submissions total accepted:21129 total submissions:64940 difficulty:easy

Suppose that a website contains two tables, the Customers table and the Orders table. Write a SQL query to find all customers The WHO never order anything.

Table:customers.

+----+-------+
| Id | Name  |
+----+-------+
| 1  | Joe   | |
2  | Henry |
| 3  | Sam   |
| 4  | Max   |
+----+-------+

Table:orders.

+----+------------+
| Id | CustomerId |
+----+------------+
| 1  | 3          |
| 2  | 1          |
+----+------------+

Using The above tables as example, return the following:

+-----------+
| Customers |
+-----------+
| Henry     |
| Max       |
+-----------+

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# Write your MySQL query statement below
Select C.name as Customers from
Customers C
where not exists (Sele CT * from Orders o where o.customerid=c.id)