在sql select語句中使用CASE的計數

我試圖執行Select語句，其中包含來自數據庫的多個表，並且其中包含計算的計數列。我有問題添加另一個計算列，我想使用CASE聲明。在sql select語句中使用CASE的計數

我的代碼如下：返回

SELECT  
    Customers.FirstName, Customers.LastName, Customers.PrivateNumber, 
    Branches.Name, Pawns.ID, Pawns.StartDate, Pawns.FinishDate, 
    Items.Name, Items.Mass, Items.Quantity, Pawns.CurrentSum, 
    Transactions.[Percent], Currencies.Name as Currency, 
    COUNT(1) OVER (PARTITION BY Pawns.ID) AS Cnt, 
    NewDistrPrcnt = (CASE WHEN COUNT(1) OVER (PARTITION BY Pawns.ID) > '1' 
        THEN Items.Mass/SUM(Transactions.[Percent])*Transactions.[Percent] 
        Else Transactions.[Percent] End) 
FROM   
    Customers 
INNER JOIN 
    Pawns ON Customers.ID = Pawns.CustomerID 
INNER JOIN 
    Items ON Pawns.ID = Items.PawnID 
INNER JOIN 
    Branches ON Pawns.BranchID = Branches.ID AND Pawns.LocationID = Branches.ID 
INNER JOIN 
    PawnTypes ON Pawns.PawnTypeID = PawnTypes.ID 
INNER JOIN 
    Currencies ON PawnTypes.CurrencyID = Currencies.ID 
LEFT OUTER JOIN 
    Transactions ON Pawns.ID = Transactions.PawnID AND Pawns.FinishDate = Transactions.Date 
WHERE  
    (Pawns.StatusID = 6) AND (Pawns.FinishDate BETWEEN '15Oct2013' AND '23Oct2013') 
ORDER BY 
    Pawns.ID, Branches.Name, Pawns.FinishDate DESC

以下錯誤，當我嘗試運行查詢：

消息8120，級別16，狀態1，行1
列'Customers.FirstName'在選擇列表中無效，因爲它不包含在聚合函數或GROUP BY子句中。

任何人都可以請幫我解決這個問題嗎？

來源

2013-10-24 Iva Bazhunaishvili

呃，這是怎麼回事與日期格式？請告訴我，您實際上沒有包含該數據的字符串列（這不是很好搜索）。另外，你真的不應該使用'BETWEEN'，[特別是在SQL Server中]（http://sqlblog.com/blogs/aaron_bertrand/archive/2011/10/19/what-do-between-and-the-devil - 具備合common.aspx）。你看到的問題是因爲你在'CASE'語句中有'SUM（Transactions。[Percent]）' - 如果你給我們樣本起始數據和預期結果，我們可能會更好地幫助你。 –

也許你需要'SUM（交易。[百分比]）'東西？ –

的問題是與SUM(Transactions.[Percent]) .Replace它與窗函數爲：(SUM(Transactions.[Percent]) over())，並嘗試爲：

SELECT  
    Customers.FirstName, Customers.LastName, Customers.PrivateNumber, 
    Branches.Name, Pawns.ID, Pawns.StartDate, Pawns.FinishDate, 
    Items.Name, Items.Mass, Items.Quantity, Pawns.CurrentSum, 
    Transactions.[Percent], Currencies.Name as Currency, 
    COUNT(1) OVER (PARTITION BY Pawns.ID) AS Cnt 
    ,NewDistrPrcnt = (CASE WHEN COUNT(1) OVER (PARTITION BY Pawns.ID) > '1' 
          THEN Items.Mass/(SUM(Transactions.[Percent]) over())*Transactions.[Percent] 
          Else Transactions.[Percent] End) 
FROM   
    Customers 
INNER JOIN 
    Pawns ON Customers.ID = Pawns.CustomerID 
INNER JOIN 
    Items ON Pawns.ID = Items.PawnID 
INNER JOIN 
    Branches ON Pawns.BranchID = Branches.ID AND Pawns.LocationID = Branches.ID 
INNER JOIN 
    PawnTypes ON Pawns.PawnTypeID = PawnTypes.ID 
INNER JOIN 
    Currencies ON PawnTypes.CurrencyID = Currencies.ID 
LEFT OUTER JOIN 
    Transactions ON Pawns.ID = Transactions.PawnID AND Pawns.FinishDate = Transactions.[Date] 
WHERE  
    (Pawns.StatusID = 6) AND (Pawns.FinishDate BETWEEN '15Oct2013' AND '23Oct2013') 
ORDER BY 
    Pawns.ID, Branches.Name, Pawns.FinishDate DESC

來源

2013-10-24 09:28:30 Deepshikha

它工作。非常感謝你！ –

在sql select語句中使用CASE的計數

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