Question

我写的以下查询工作正常，并显示我从预算金额支付的金额总和。但它没有表现出余额。我非常感谢您帮助确定显示余额的逻辑/查询。

SELECT DISTINCTROW tblInvoices.FY, tblInvoices.ContractNumber, 
       Sum(tblInvoices.AmountPaid) AS [Sum Of AmountPaid]
FROM tblInvoices
GROUP BY tblInvoices.FY, tblInvoices.ContractNumber
HAVING (((tblInvoices.FY)=[which FY]));

请参阅附带的屏幕截图以供参考。表格中有一个表格。当我单击按钮（YTD Spent）时，表单将显示并显示有关（金额总和），（预算）的信息，但不显示余额文本框中的（余额=预算 - 金额总和）。 enter image description here enter image description here enter image description here

Answer 1

在这里猜测因为不知道数据库表结构是什么

select b.*, a.budget-b.[Sum Of AmountPaid] from (SELECT DISTINCTROW tblInvoices.FY, tblInvoices.ContractNumber, 
       Sum(tblInvoices.AmountPaid) AS [Sum Of AmountPaid]
FROM tblbudget
GROUP BY tblInvoices.FY, tblInvoices.ContractNumber
HAVING (((tblInvoices.FY)=[which FY])))a join
(
SELECT DISTINCTROW tblInvoices.FY, tblInvoices.ContractNumber, 
       Sum(tblInvoices.AmountPaid) AS [Sum Of AmountPaid]
FROM tblInvoices
GROUP BY tblInvoices.FY, tblInvoices.ContractNumber
HAVING (((tblInvoices.FY)=[which FY])))b
on a.fy=b.fy and a.contractnumber=b.contractnumber

Answer 2

感谢@ Daniel的工作，基于我研究并编写了以下查询，完美无缺。 SELECT DISTINCTROW tblInvoices.FY，tblInvoices.ContractNumber，Sum（tblInvoices.AmountPaid）

AS [AmountPaid的总和]，tblBudget.Budget，tblBudget.Budget-Sum（tblInvoices.AmountPaid）AS [Balance＃]

FROM tblInvoices，tblBudget

其中tblInvoices.FY = tblBudget.FiscalYear和tblInvoices.ContractNumber = tblBudget.ContractNumber

GROUP BY tblInvoices.FY，tblInvoices.ContractNumber，tblBudget.Budget

HAVING（（（tblInvoices.FY）= [哪个FY]））;

使用MS Access 2010数据库显示余额的SQL查询 - 表单中有表单

2 个答案: