SQL查询以显示更新的帐户余额

Question

我在Access数据库中有两个表，[Party]和[Invoice]。我想总结一下所有党派的余额。这是我到目前为止的查询：

select 
    Party.AccountCode,
    Party.AccountDescription,
    OpeningBalance+sum(invoiceAmount) as balance,
    invoiceDate 
from Party,Inovoice 
where party.accountCode=Inovice.AccountCode 
    and invoiceDate>=01-01-2013 
    and invoiceDate<=30-06-2013
group by 
    Party.AccountCode,
    Party.AccountDescription,
    invoiceDate

此查询仅返回[Invoice]表中显示的两方的余额：TOM和JHONS。我想显示所有4个派对的余额：

Answer 1

使用两个查询。第一个计算总发票金额，第二个计算当事人余额

qrySumInvoiceAmounts：

SELECT 
AccountCode
sum(invoiceAmount) as InvoiceBalance,
FROM Invoice    
group by 
AccountCode,
WHERE invoiceDate>= #01-01-2013#
and invoiceDate<= #30-06-2013#

qryPartyBalance：

SELECT
Party.AccountCode,
Party.AccountDescription,
OpeningBalance + InvoiceBalance,
from Party LEFT JOIN qrySumInvoiceAmounts
ON party.accountCode=qrySumInvoiceAmounts.AccountCode