如何在MS Access中的表的列中设置文本？

Question

我需要在表格栏中显示文字重新比较金额。这是我的访问查询表

现在在新栏目（状态）中，我需要显示

1）如果AmountDue等于GrandTotal或

，则“不支持”

2）如果AmountDue小于GrandTotal或

，则“部分支付”

3）如果AmountDue为零，则“PAID”

我的SQL查询代码是

SELECT InvoiceNumber, 
Terms(Select PaymentTerms from PSD_customerPaymentTerms where PSD_customerPaymentTerms.PTId = NewInvoice_1.Terms) AS Terms, 
InvoiceDate, OurQuote, 
SalesPerson(Select FirstName from Employee where Employee.EmployeeId = NewInvoice_1.SalesPerson) AS SalesPerson, 
CustomerName(Select CustomerName from Customer where Customer.CustomerId = NewInvoice_1.CustomerName) AS CustomerName, 
OrderNumber,  GrandTotal,

(SELECT SUM(PaymentAmount) FROM Payment_Receipt WHERE Payment_Receipt.InvoiceNumber=NewInvoice_1.InvoiceNumber) AS AmountPaid,

GrandTotal - iif(AmountPaid is null, 0, AmountPaid) AS AmountDue
FROM NewInvoice_1;

Answer 1

向表中添加新列

ALTER TABLE yourTable ADD COLUMN Status TEXT

然后使用SWITCH函数比较值并更新状态列

UPDATE yourTable 
SET Status = SWITCH(
                    AmountDue = GrandTotal, 'NOT PAID',
                    AmountDue < GrandTotal, 'PARTIALLY PAID',
                    AmountDue = 0 , 'PAID'
                   );