Question

我正在使用SQL Server而且我遇到了问题。任何帮助，将不胜感激！

使用AP数据库创建一个名为double d = accumulate(vectOrd.begin(), vectOrd.end(), 0.0, [](double acc, const Order& order) { return acc + order.gesamtpreisEinerPerson(); });的存储过程，该过程接受两个参数：类型为double operator+ (double d, const Order& order) { return d + order.gesamtpreisEinerPerson(); }的{{1}}和类型为spFindInvoices的{{1}}。

此过程显示VendorName，InvoiceNumber，InvoiceDueDate和@NameVendor的余额，其中余额大于@BalanceLimit。如果您使用@NameVendor和varchar来调用/测试该过程，则会显示以下表格：

@BalanceLimit

Answer 1

我不完全确定我是否掌握了您的要求，但如果我是正确的，我相信您正在为指定的供应商寻找超过指定金额的所有余额

USE AP;
GO

CREATE PROC spInvoices
     @NameVendor VARCHAR(50),
     @BalanceLimit SMALLMONEY
AS
    SELECT 
        VendorName, InvoiceNumber, InvoiceDueDate, 
        (InvoiceTotal - CreditTotal - PaymentTotal) AS Balance
    FROM 
        Invoices 
    JOIN 
        Vendors ON Invoices.VendorID = Vendors.VendorID
    WHERE 
        @BalanceLimit > (InvoiceTotal - CreditTotal - PaymentTotal)
    AND 
        @NameVendor = VendorName
GO

EXEC spFindInvoices @NameVendor = 'Federal Express Corporation',
                @BalanceLimit = '0'

您应该将VARCHAR @VendorName和SMALLMONEY @BalanceLimit相互比较，当您将它们与查询中的相应值进行比较时

Answer 2

此代码应该有效：

CREATE PROC spInvoices
     @NameVendor VARCHAR(50),
     @BalanceLimit SMALLMONEY
AS
    SELECT 
        VendorName, InvoiceNumber, InvoiceDueDate, 
        (InvoiceTotal - CreditTotal - PaymentTotal) AS Balance
    FROM 
        Invoices 
    JOIN 
        Vendors ON Invoices.VendorID = Vendors.VendorID
    WHERE 
        @NameVendor  = Vendors.VendorName
        (InvoiceTotal - CreditTotal - PaymentTotal) > @BalanceLimit

但是，如果列的其他类型不是InvoiceTotal，则可能需要明确地将列添加到CreditTotal，PaymentTotal，smallmoney到smallmoney datattytpe。

存储过程难度大

2 个答案: