涉及連接的SQL查詢

Question

對於SQL評估，我必須執行一個查詢，我需要按銷售員代碼的順序列出過去一個月的汽車銷售情況。 我已經創建了一條SQL語句。但是，當我運行它時，除了查詢中包含的列名稱外，它什麼都沒有列出。我已經使用了SQL代碼如下：

SELECT CarForSale.SalesmanCode, 
    Salesman.SalesmanName, 
    Customer.CustomerCode, 
    Customer.CustomerName, 
    Customer.CustomerAddress 
FROM 
(
    Centre 
    INNER JOIN Customer 
    ON Centre.CentreCode = Customer.CentreCode 
) 
INNER JOIN CarForSale 
    ON (Customer.CustomerCode = CarForSale.CustomerCode) 
    AND (Centre.CentreCode = CarForSale.CentreCode), Salesman 
WHERE CarForSale.CFSSoldDate BETWEEN CVDATE('01/02/2013') AND CVDATE('01/03/2013') 
ORDER BY Salesman.SalesmanCode; 

如果任何人有任何意見或知道我要去的地方錯了，我將非常感激這個問題的一些援助。

這裏是作爲請求的一些示例數據：

• CFS表

  CFSCode CFSMake CFSModel CFSSellingPrice 
  000001 Mercedes W168   45000    
  
  CFSSoldDate CentreCode SalesmanCode CustomerCode 
  01/03/2013 00000001 0000000001 00000001 
  

• 推銷員表

  SalesmanCode SalesmanName SalemanCommThisYear SalesmanStatus CentreCode 
  0000000001 Liam Jones  2250   senior  00000001 
  

• 客戶表

  CustomerCode CustomerName CustomerAddress CentreCode CustomerStatus 
  00000001 Gina Smith  1, The Lake,  00000002   good 
            Merthyr Tydfil 
  

Answer 1

在你當前的查詢，你有一些不尋常的語法：

AND (Centre.CentreCode = CarForSale.CentreCode), Salesman -- what's this 

我不知道什麼是, Salesman應該做的。但是，如果你試圖JOIN在Salesman表，然後將查詢將是：

SELECT CarForSale.SalesmanCode, 
    Salesman.SalesmanName, 
    Customer.CustomerCode, 
    Customer.CustomerName, 
    Customer.CustomerAddress 
FROM ((Centre 
INNER JOIN Customer 
    ON Centre.CentreCode = Customer.CentreCode) 
INNER JOIN CarForSale 
    ON (Customer.CustomerCode = CarForSale.CustomerCode) 
    AND (Centre.CentreCode = CarForSale.CentreCode))) 
INNER JOIN Salesman 
    ON CarForSale.SalesmanCode = Salesman.SalesmanCode 
WHERE CarForSale.CFSSoldDate BETWEEN #01/02/2013# AND #01/03/2013# 
ORDER BY Salesman.SalesmanCode; 

在MS Access

而且，使用的日期時，應通過磅SIGS #包圍。您的查詢應該是：

SELECT CarForSale.SalesmanCode, 
    Salesman.SalesmanName, 
    Customer.CustomerCode, 
    Customer.CustomerName, 
    Customer.CustomerAddress 
FROM ((Centre 
INNER JOIN Customer 
    ON Centre.CentreCode = Customer.CentreCode) 
INNER JOIN CarForSale 
    ON (Customer.CustomerCode = CarForSale.CustomerCode) 
    AND (Centre.CentreCode = CarForSale.CentreCode))) 
INNER JOIN Salesman 
    ON CarForSale.SalesmanCode = Salesman.SalesmanCode 
WHERE CarForSale.CFSSoldDate BETWEEN #01/02/2013# AND #01/03/2013# 
ORDER BY Salesman.SalesmanCode; 

編輯＃1，我不知道你爲什麼在Centre表，因爲你不使用它的任何東西的加盟。我只是使用您的示例數據在MS Access中運行以下查詢並獲得結果：

SELECT CarForSale.SalesmanCode, 
    Salesman.SalesmanName, 
    Customer.CustomerCode, 
    Customer.CustomerName, 
    Customer.CustomerAddress 
FROM (Customer 
INNER JOIN CarForSale 
    ON Customer.CustomerCode = CarForSale.CustomerCode) 
INNER JOIN Salesman 
    ON CarForSale.SalesmanCode = Salesman.SalesmanCode 
WHERE CarForSale.CFSSoldDate BETWEEN #01/02/2013# AND #01/03/2013# 
ORDER BY Salesman.SalesmanCode;