SQL查詢內部連接4表

Question

我試圖顯示已交付給成員的已購書籍的列表。該清單應顯示會員識別號碼，名字和姓氏，地址，聯繫電話，書籍序列號，書名，數量和交付日期。

我的表是低於

CREATE TABLE Members 
      (
       MemberID nvarchar(50) NOT NULL PRIMARY KEY, 
       MemberName nvarchar(50) NOT NULL, 
       MemberAddress nvarchar(50), 
       MemberContact int, 
       MemberAge int, 
       RegistrationDate nvarchar(50) 
      ); 


      --Inserting Values into Members' Table-- 
      INSERT INTO Members(MemberID, MemberName, MemberAddress, MemberContact, MemberAge,RegistrationDate) 
      VALUES ('MEM01', 'Muhammed Abdul', 'Damansara','01121565987', '34', '20/02/2017'); 

     CREATE TABLE Book 
     ( 
      BookID nvarchar(50) NOT NULL PRIMARY KEY, 
      BookName nvarchar(50) NOT NULL, 
      BookCategory nvarchar(50), 
      BookPrice1 nvarchar(50), 
      Author nvarchar(50), 
      PublisherID nvarchar(50) NOT NULL FOREIGN KEY REFERENCES Publisher(PublisherID) 

     ); 
     --Inserting Values into Book Table-- 
     INSERT INTO Book(BookID, BookName, BookCategory, BookPrice1, Author, PublisherID) 
     VALUES ('B01', 'Harry Potter', 'Fantasy','70', 'Rowling J.K','PB01'); 

     CREATE TABLE Orders_Bookstore 
     (
      OrderID nvarchar(50) NOT NULL PRIMARY KEY, 
      BookID nvarchar(50) NOT NULL FOREIGN KEY REFERENCES Book(BookID), 
      OrderDate nvarchar(50), 
      OrderQuantity int, 
      OrderTotal int, 
      MemberID nvarchar(50) NOT NULL FOREIGN KEY REFERENCES Members(MemberID), 
     ); 
     --Inserting Values into Boookstore Orders table-- 
     INSERT INTO Orders_Bookstore(OrderID, BookID, OrderDate, OrderQuantity, OrderTotal, MemberID) 
     VALUES ('ORD1','B01', '04/06/2017', '3' ,'210', 'MEM01'); 

     CREATE TABLE Receipt 
     (
      ReceiptID nvarchar(50) NOT NULL PRIMARY KEY, 
      CartNum nvarchar(50) FOREIGN KEY REFERENCES ShoppingCart(CartNum), 
      DateOfDelivery nvarchar(50), 
      DeliveryStatus nvarchar(50), 
      MemberID nvarchar(50) FOREIGN KEY REFERENCES Members(MemberID) 
     ); 

     --Inserting Values INTO Receipt table-- 
     INSERT INTO Receipt(ReceiptID, CartNum, DateOfDelivery,DeliveryStatus) 
     VALUES ('REC1', 'CART1', '08/15/2017', 'Delivered');` 

是我到目前爲止已經試過，但沒有運氣：

SELECT MemberID, MemberName, MemberAddress, MemberContact, BookID, BookName, 
    OrderQuantity, DeliveryStatus, DateOfDelivery FROM Members 
    INNER JOIN Orders_Bookstore ON Members.MemberID=Orders_Bookstore.MemberID 
    INNER JOIN Members ON Orders_Bookstore.MemberID=Members.MemberID 
    INNER JOIN Book ON Orders_Bookstore.BookID=Book.BookID 
    INNER JOIN Receipt ON Receipt.MemberID=Members.MemberID 

任何幫助，將不勝感激

Answer 1

試試這個：

SELECT 
m.MemberID, m.MemberName, m.MemberAddress, m.MemberContact, 
b.BookID, b.BookName, 
ob.OrderQuantity, 
r.DeliveryStatus, r.DateOfDelivery 
    FROM Members m 
    INNER JOIN Orders_Bookstore ob ON m.MemberID=ob.MemberID 
    INNER JOIN Book b ON ob.BookID=b.BookID 
    INNER JOIN Receipt r ON r.MemberID=m.MemberID 

請使用日期格式的所有日期。

Answer 2

一個四個表連接需要3個內部連接。你正在使用4，這意味着你在某個地方使用了兩次桌子。嘗試：

SELECT MemberID 
    ,MemberName 
    ,MemberAddress 
    ,MemberContact 
    ,Book.BookID 
    ,BookName 
    ,OrderQuantity 
    ,DeliveryStatus 
    ,DateOfDelivery 
FROM Members m1 
INNER JOIN Orders_Bookstore ON m1.MemberID = Orders_Bookstore.MemberID 
INNER JOIN Book ON Orders_Bookstore.BookID = Book.BookID 
INNER JOIN Receipt ON Receipt.MemberID = m1.MemberID