给出一个客户订单表,列为客户ID,订单ID,订单日期和订单数量,写一个SQL查询,找到最多订单的前5个客户.
Here's the SQL query you can use:

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

This query uses the `SUM` function to calculate the total order amount for each customer, then groups the results by customer ID. The `ORDER BY` clause sorts the results in descending order by the total order amount, and the `LIMIT` clause returns the top 5 rows.