Help me in solving GSQ68E problem

tutorial
,
1

My issue

but is showing wrong

My code

WITH top_purchase AS (
    SELECT Purchase_id, Customer_id, Purchase_Amt
    FROM Purchase
    ORDER BY Purchase_Amt DESC
    LIMIT 3
)
SELECT 
    Customer.Customer_id, 
    Customer.Customer_Name, 
    top_purchase.Purchase_id, 
    top_purchase.Customer_id AS Purchase_Customer_id, 
    top_purchase.Purchase_Amt
FROM 
    Customer
JOIN 
    top_purchase 
ON 
    Customer.Customer_id = top_purchase.Customer_id;

Learning course: 212CSE2305: Database Management Systems
Problem Link: https://www.codechef.com/learn/course/kl-dbms-cs-2024/KLDBMS2420/problems/GSQ68E