涉及四路加入的SQL查询

试图为MSSQL练习创建4路查询。让我简单描述表格：涉及四路加入的SQL查询

4个主表，供应商（供应商详细信息，pk vendorId），发票（发票详细信息pk InvoiceId，fk VendorID），InvoiceLineItems（I）和GlAccounts（accountNo pk）。

查询：编写一条SELECT语句，返回四列：VendorName，AccountDescription，LineItemCount和LineItemSum。 LineItemCount是行数，并LineItemSum是InvoiceLineItemAmount列

我的解决方案的总和：

SELECT Vendors.VendorName, GLAccounts.AccountDescription, 
    SUM(InvoiceLineItems.InvoiceLineItemAmount) as LineItemSum, 
    Count (InvoiceLineItems.InvoiceID) as LineItemCount 
FROM Vendors INNER JOIN Invoices 
ON Vendors.VendorID = Invoices.VendorID 
INNER JOIN InvoiceLineItems 
    ON Invoices.InvoiceID = InvoiceLineItems.InvoiceID 
INNER JOIN GLAccounts 
    ON InvoiceLineItems.AccountNo = GLAccounts.AccountNo 
ORDER BY Vendors.VendorName

问题：

消息8120，级别16，状态1，行列'Vendors.VendorName'在选择列表中无效，因为它不包含在聚合函数或GROUP BY子句中。

的窘境：

不知道为什么这个问题发生，因为很清楚我在集团提Vendors.VendorName By子句。我怀疑它与我正在执行的内部连接有关，因为它们是多个，我必须有错误。

任何人都可以发现这里有什么问题吗？

来源

2011-05-30 Parijat

如果你有多个总帐科目的发票多个行项目，什么应返回：用逗号分隔的列表？ – Thomas 2011-05-30 23:41:07

你明确提到它在哪个* GROUP BY条款中？ – Phil 2011-05-30 23:42:53

添加GROUP BY Vendors.VendorName，GLAccounts.AccountDescription

来源

2011-05-30 23:40:44

尝试

SELECT Vendors.VendorName, GLAccounts.AccountDescription, SUM(InvoiceLineItems.InvoiceLineItemAmount) as LineItemSum, Count (InvoiceLineItems.InvoiceID) as LineItemCount FROM Vendors INNER JOIN Invoices ON Vendors.VendorID = Invoices.VendorID INNER JOIN InvoiceLineItems ON Invoices.InvoiceID = InvoiceLineItems.InvoiceID INNER JOIN GLAccounts ON InvoiceLineItems.AccountNo = GLAccounts.AccountNo Group By Vendors.VendorName, GLAccounts.AccountDescription ORDER BY Vendors.VendorName.

Sum, Count, Avg etc都是集合函数，所以记录有一定的标准进行分组，以执行这些操作。

来源

2011-05-30 23:41:30

由于您汇总（汇总）InvoiceLineItemAmount和InvoiceID到一个结果每个VendorName，你还需要为VendorName和AccountDescription列做同样的。只需在您的查询结尾添加一个

GROUP BY Vendors.VendorName, GLAccounts.AccountDescription

。

来源

2011-05-30 23:44:27 slugster

我们必须说明您在同一张发票上有多个gl账户值的可能性。为此，我们需要使用一个子查询，它将给我们一个这些帐号的分隔列表。另外，建议您为单张发票执行此操作？如果是的话，结果可能是：

Select V.VendorName 
    , Stuff(
     (
     Select ', ' + GA1.AccountDescription 
     From InvoiceLineItems As LI1 
      Join GLAccounts As GA1 
       On GA1.AccountNo = LI1.AccountNo 
     Where LI1.InvoiceId = I.InvoiceId 
     Group By GA1.AccountDescription 
     Order By GA1.AccountDescription 
     ).value('.', 'nvarchar(max)'), 1, 2, '') As AccountDescriptions 
    , Coalesce(LineItemInfo.ItemCount, 0) As LineItemCount 
    , Coalesce(LineItemInfo.AmountTotal, 0) As LineItemSum 
From Vendors As V 
    Join Invoices As I 
     On I.vendorid = V.vendorid 
    Left Join (
       Select LI2.InvoiceId 
        , Count(*) As ItemCount 
        , Sum(LI2.Amount) As AmountTotal 
       From InvoiceLineItems As LI2 
       Group By LI2.InvoiceId 
       ) As LineItemInfo 
     On LineItemInfo.InvoiceId = I.InvoiceId 
Where I.InvoiceId = @SomeInvoiceId

来源

2011-05-30 23:47:26 Thomas

涉及四路加入的SQL查询

回答

相关问题