183. Customers Who Never Order LeetCode Solution

In this guide, you will get 183. Customers Who Never Order LeetCode Solution with the best time and space complexity. The solution to Customers Who Never Order problem is provided in various programming languages like C++, Java, and Python. This will be helpful for you if you are preparing for placements, hackathons, interviews, or practice purposes. The solutions provided here are very easy to follow and include detailed explanations.

Table of Contents

1. Problem Statement
2. Complexity Analysis
3. Customers Who Never Order solution in C++
4. Customers Who Never Order solution in Java
5. Customers Who Never Order solution in Python
6. Additional Resources

Problem Statement of Customers Who Never Order

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 not found

Constraints not found

Complexity Analysis

• Time Complexity: Google AdSense
• Space Complexity: Google Analytics

183. Customers Who Never Order LeetCode Solution in C++

SELECT Customers.name AS Customers
FROM Customers
LEFT JOIN Orders
  ON (Customers.id = Orders.customerId)
WHERE Orders.id IS NULL;
/* code provided by PROGIEZ */

183. Customers Who Never Order LeetCode Solution in Java

N/A
// code provided by PROGIEZ

183. Customers Who Never Order LeetCode Solution in Python

N/A
 # code by PROGIEZ

Additional Resources

• Explore all LeetCode problem solutions at Progiez here
• Explore all problems on LeetCode website here

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