MySQL多表联接不正确的求和

我正在尝试将三个表连接在一起并求和（MySQL），按“跟踪编号”和“订单ID”分组：

invoice_data_dhl
master_track_nums
payments

问题：当一个订单ID有多个

付款

行时，它将

DHL\u成本

总计乘以订单ID的

付款

表中的结果数

SELECT 
invoice_data_dhl.Waybill_Number,
sum(invoice_data_dhl.AWB_Original_Amount) AS DHL_COST,
master_track_nums.order_ID,
sum(payments.revenue) AS REVENUE
FROM invoice_data_dhl
LEFT JOIN master_track_nums
ON invoice_data_dhl.Waybill_Number = master_track_nums.track
LEFT JOIN payments
ON master_track_nums.order_ID = payments.order_ID
GROUP BY invoice_data_dhl.Waybill_Number

---

可以这样写吗？这样我就可以通过一个输出如下结果的查询获得结果

Waybill_Number  DHL_COST    order_ID    REVENUE
7022193792       182.52       110632      234
4536137201      3311.96       107637     4074
3927382187       248.95       110384      636
7812896712        74.85       106998      247

---

提前谢谢你的帮助

未测试：但类似以下内容：更新：未删除内联查询中的收入总和

SELECT A.waybill_number, A.DHL_COST, A.Order_ID, Sum(payments.Revenue)
FROM 
  (SELECT invoice_data_dhl.Waybill_Number,
     sum(invoice_data_dhl.AWB_Original_Amount) AS DHL_COST,
     master_track_nums.order_ID
   FROM invoice_data_dhl
   LEFT JOIN master_track_nums
       ON invoice_data_dhl.Waybill_Number = master_track_nums.track
   GROUP BY master_track_nums.Order_ID, invoice_data_dhl.Waybill_Number) A
LEFT JOIN payments
  ON A.order_ID = payments.order_ID
GROUP BY A.waybill_number, A.DHL_COST, A.Order_ID

---

“可以这样写吗？这样我就可以通过一个输出如下结果的查询获得结果？”。在执行联接之前，必须聚合结果。因此，一个内联查询将返回所需的DHL_成本，然后添加到付款中，导致成本翻倍。谢谢！我只需在末尾添加

groupby

语句：“groupby A.Waybill_Number”（并匹配第一行的大写字母）。