Question

我想创建一个存储过程spSumInvoices，它将接收感兴趣的供应商ID并打印出供应商的名称和所有发票的总和。

这是我正在使用的代码，不确定它是否正确我是存储过程的新手：

IF OBJECT_ID ('spSumInvoices') IS NOT NULL
    DROP PROC spSumInvoices;
GO

CREATE PROC spSumInvoices
    @FindVen int,
    @InvoiceTotal Money,
    @VenName VARCHAR
AS
BEGIN  
    SELECT 
        @FindVen, SUM(InvoiceTotal) AS 'Total', @VenName
    FROM 
        Vendors,Invoices
    WHERE 
        Invoices.VendorID = @FindVen
    GROUP BY 
        @InvoiceTotal
END

PRINT 'Vendor' + @VenName
PRINT 'Has an invoice total of $' + CONVERT(VARCHAR,@InvoiceTotal);

我收到此错误：

Msg 164，Level 15，State 1，Procedure spSumInvoices，Line 15
每个GROUP BY表达式必须至少包含一个不是外部引用的列。

Answer 1

这个问题的答案是： {USE AP; 如果OBJECT_ID（＆＃39; spSumInvoices＆＃39;）不是NULL DROP PROC spSumInvoices; GO

CREATE PROC spSumInvoices
@FindVen int



AS
BEGIN
DECLARE @VenName Varchar(50);
SET @VenName =(SELECT VendorName FROM Vendors WHERE VendorID = @FindVen);
DECLARE @InvoiceTotal money;
SET @InvoiceTotal = (SELECT SUM(InvoiceTotal) FROM Invoices WHERE
VendorID = @FindVen);


SELECT @VenName,@InvoiceTotal
FROM Vendors,Invoices
WHERE Invoices.VendorID = @FindVen

END

PRINT 'Vendor ' + @VenName
PRINT 'Has an invoice total of $' + CONVERT(VARCHAR,@InvoiceTotal);
enter code here}

为什么这个'）'导致错误？

1 个答案: