Join 需要SQL内部子查询计算帮助

我想从TotalAmount-AmmonReceived=下一行的余额计算余额运行时

TotalAmont（实际上是上一次运行时计算的余额）应该在这里-amonUnreceived=balance，依此类推

这是我的查询，它不递减TotalAmount

select ID,
       RecvDate,
       BillNo,
       ModeofPayment,
       (Select Item_name from Product where ID = CampusRecovery.ItemID) as Item,
       SUM(AmountReceived) as AmountReceived,
       (Select CampusName from Campus where CampusID = CampusRecovery.CampusID) as Campus,
       IsNull((select SUM(Inventory_Out.TotalAmount)
               from Inventory_Out
               where Inventory_Out.BillNo = CampusRecovery.BillNo),0) as TotalAmmount,
       IsNull((select SUM(Inventory_Out.TotalAmount)
               from Inventory_Out
               where Inventory_Out.BillNo = CampusRecovery.BillNo),0) - SUM(AmountReceived) as Balance
from CampusRecovery 
where RecvDate Between @startdt and @enddt
  and CampusID = 2
Group By CampusRecovery.CampusID,
         CampusRecovery.ItemID,
         CampusRecovery.RecvDate,
         CampusRecovery.BillNo,
         CampusRecovery.ModeofPayment,
         CampusRecovery.ID

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能否在表格定义中添加一些示例数据和预期输出？这将使计算更加容易，包括样本数据和您的预期输出。根据您所描述的内容，您需要窗口函数。@JeremyC。请看我的最新帖子，我已经插入了解释这个问题的图片issue@VladimirOselsky请看我的更新帖子，我已经插入了解释问题的图片。最后一行的总金额应该是240，而balence是40？在这种情况下，您没有给我们正确的语句，因为我们需要您的insert语句

select cr.BillNum, cr.DelievryDate,cr.AmmountReceived,(select TotalAmmount from InventoryOut where InventoryOut.BillNum = cr.BillNum) as TotalBill,
(select TotalAmmount -
(select Sum(AmmountReceived) from CampusRecovery ch where ch.BillNum = io.BillNum )
 from InventoryOut io where io.BillNum = cr.BillNum )--- sum(cr.AmmountReceived)
as Balance
from CampusRecovery  cr where CampusID = 1
group by 
cr.BillNum,
cr.DelievryDate,
cr.BillNum,
cr.AmmountReceived