Question

你好，我正在尝试为某个客户提供声明

我使用的查询

SELECT distinct t.S_Type as Type,t.Number,t.Date, t.Debit, t.Credit, t.CustID, b.Balance
FROM Statement as t CROSS apply
     (SELECT Balance = SUM(Debit) - SUM(Credit)
      FROM Statement as x
      WHERE x.Number<= t.Number AND x.CustID = t.CustID
     ) b
where t.CustID ='7003' and date between '8/21/2015' and '8/25/2015'
ORDER BY t.date

out put

type            Number  Date        Debit  CREDIT   cust_id  Balance
Sales Invoice   1     2015-08-23    400.00  0.00    7003    400.00
Sales Invoice   2     2015-08-23    1500.00 0.00    7003    1900.00
Receipt Voucher 3     2015-08-24    0.00    400.00  7003    1500.00

此处您注意到收据凭证编号值大于销售发票金额

当我的收据凭证编号值小于例如1的销售发票编号值时，会出现问题

当收据凭证低于销售价值时我得到的输出

type            Number  Date        Debit  CREDIT   cust_id  Balance
Sales Invoice   1    2015-08-23  400.00    0.00     7003        0.00
Sales Invoice   2    2015-08-23  1500.00    0.00    7003        1500.00
Receipt Voucher 1    2015-08-24  0.00     400.00    7003       -400.00

哪个不对，输出应该像第一个出来的问题

如果我将x.Number＆lt; = t.Number更改为x.Number＆gt; = t.Number，但是当我的Receipt Voucher值大于销售价值时，它会给出错误的值，但查询会给出正确的结果值也。

提前致谢

Answer 1

不是在number上进行计算，为什么不在date和number上进行计算？

SELECT t.S_Type as Type, t.Number, t.Date, t.Debit, t.Credit, t.CustID, b.Balance
FROM Statement as t CROSS apply
     (SELECT Balance = SUM(Debit) - SUM(Credit)
      FROM Statement as x
      WHERE (x.date < t.date or
             x.date = t.date and x.Number <= t.Number
            ) AND x.CustID = t.CustID
     ) b
WHERE t.CustID = '7003' and date between '2015-08-21' and '2015-08-25'
ORDER BY t.date;

或者，更好的是，只使用累积总和（在SQL 2012 +中）：

SELECT t.S_Type as Type, t.Number, t.Date, t.Debit, t.Credit, t.CustID, 
       SUM(t.debit - t.credit) OVER (PARTITION BY t.CustId ORDER BY t.date, t.Number) as Balance
FROM Statement as t
WHERE t.CustID = '7003' and date between '2015-08-21' and '2015-08-25'
ORDER BY t.date;

Answer 2

我认为第二种情况的问题是＆＃34;收据凭证＆＃34;是的，但日期更长。

您的查询似乎假设较低的＆＃34; Statement.Number＆＃34; show还有一个较低的声明。日期＆＃34;。

不应该是这种情况吗？

尝试更改第二个示例中的日期，以便＆＃34;收据凭证＆＃34;也有较早的约会。

或者，通过＆＃34; t.number＆＃34;来排序结果。而不是约会。

查询得到错误的计算值

2 个答案: