给出一个客户订单表,列为客户ID,订单ID,订单日期和订单金额,写一个SQL查询,找到花费最多钱的前5名客户.
Here is a sample SQL query that can be used to find the top 5 customers who have spent the most money:

```
SELECT CustomerID, SUM(OrderAmount) AS TotalAmount
FROM Orders
GROUP BY CustomerID
ORDER BY TotalAmount DESC
LIMIT 5;
```

This query will group the orders by customer and sum the order amounts to find the total amount each customer has spent. Then, it will order the results by the total amount in descending order and only return the top 5 customers.