幫助輸出重複

Question

我需要一些幫助，讓我的重複在我的輸出中多次顯示。

SELECT 
    accountNumber AS 'Member Number', 
    OD.orderdetails AS 'iNum', 
    FirstName AS 'First Name', 
    LastName AS 'Last Name', 
    HGP.email AS 'Email', 
    points AS 'Points -->', 
    '$' + CONVERT(varchar(50),(CONVERT(int,Points) * .1)) AS '<-- Amount', 
    CountryCode AS 'Country', 
    CONVERT(VARCHAR(10), issued, 101) AS 'Order Date', 
    CONVERT(VARCHAR(10), cs.RedeemedDate, 101) AS 'R Date' 
FROM tblHGP HGP, OrderDetails OD, tblInvoices i 
JOIN tblCS cs ON i.InvoiceNumber = cs.InvoiceNumber 
JOIN tblECI ac ON i.InvoiceNumber = ac.InvoiceNumber 
    AND cs.Sold = ac.ECIID 
WHERE 
    i.InvoiceNumber = HGP.invoiceNumber 
    AND HGP.issued BETWEEN '2010-01-01' AND '2010-09-01' 
    AND HGP.invoiceNumber = OD.orderdetails 
ORDER BY 
    HGP.issued 

就像我上面說的，我得到了一些用戶的重複。我試過截然不同的，但似乎沒有工作。

任何幫助將是偉大的！ ：o）

大衛

Answer 1

像你只使用加入到訂單明細爲，這看起來對我說：

OD.orderdetails AS 'iNum', 

當你的WHERE子句中所示，可以從人類基因組計劃獲得此相同的值：

AND HGP.invoiceNumber = OD.orderdetails 

因此您可以將整個聯接消除到OD，並消除由於發票的詳細信息表中的多行而造成的重複。因此，改寫它應該是這樣的：

SELECT 
    accountNumber AS 'Member Number', 
    HGP.invoiceNumber AS 'iNum', 
    FirstName AS 'First Name', 
    LastName AS 'Last Name', 
    HGP.email AS 'Email', 
    points AS 'Points -->', 
    '$' + CONVERT(varchar(50),(CONVERT(int,Points) * .1)) AS '<-- Amount', 
    CountryCode AS 'Country', 
    CONVERT(VARCHAR(10), issued, 101) AS 'Order Date', 
    CONVERT(VARCHAR(10), cs.RedeemedDate, 101) AS 'R Date' 
FROM tblHGP HGP, tblInvoices i 
JOIN tblCS cs ON i.InvoiceNumber = cs.InvoiceNumber 
JOIN tblECI ac ON i.InvoiceNumber = ac.InvoiceNumber 
    AND cs.Sold = ac.ECIID 
WHERE 
    i.InvoiceNumber = HGP.invoiceNumber 
    AND HGP.issued BETWEEN '2010-01-01' AND '2010-09-01' 
ORDER BY 
    HGP.issued 

我不能肯定地告訴如果非表格合格列名（即發行點，COUNTRYCODE，名字，姓氏）從訂單明細或不來，儘管他們看起來不像。

Answer 2

更多細節。從查詢中看，如果發票有多個訂單明細（多個訂購商品），您會看到雙倍數。這看起來像設計。自然dsictinct不會工作，因爲不是所有的領域將是相同的。

基本上，如果用戶在一張發票中爲兩件物品開具發票，他將出現（如發票一樣）兩次。