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Error happen in the \"Review\" Table, where I can\'t a create a table with multi

ID: 3682008 • Letter: E

Question

Error happen in the "Review" Table, where I can't a create a table with multiple foreign keys.

"You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'REFERENCES Attraction(AttractionCode),
    FOREIGN KEY TourCode REFERENCES Tour(T' at line 11"

Following code:

--------------------

CREATE TABLE City (
   ZipCode       INT(5) NOT NULL,
   State       VARCHAR(2) NOT NULL,
   City       VARCHAR(20) NOT NULL,
   CONSTRAINT City_PK PRIMARY KEY (ZipCode)
);

CREATE TABLE Attraction (
   AttractionCode       INT(8) NOT NULL,
   AName               VARCHAR(20)   NOT NULL,
   AType               VARCHAR(20) NOT NULL,
   AttractionRank       INT(4) NOT NULL,
   ADescription       VARCHAR(50),   
   ZipCode       INT(5) NOT NULL,
   CONSTRAINT Attraction_PK PRIMARY KEY (AttractionCode),
   CONSTRAINT Attraction_FK1 FOREIGN KEY (ZipCode) REFERENCES City(ZipCode)
);

CREATE TABLE AttractionDetail (
   DetailedAddress       VARCHAR(30) NOT NULL,
   PhoneNumber           VARCHAR(20),
   OperatingHours       INT(2) NOT NULL,
   Fee                   NUMERIC(3,2) NOT NULL,
   ADDescription       VARCHAR(50),
   AttractionCode       INT(8) NOT NULL,
   CONSTRAINT AttractionDetail_PK PRIMARY KEY (DetailedAddress),
   CONSTRAINT AttractionDetail_FK1 FOREIGN KEY (AttractionCode) REFERENCES Attraction(AttractionCode)
);

CREATE TABLE Hotel (
   HotelAddress       VARCHAR(30) NOT NULL,
   HName               VARCHAR(20) NOT NULL,
   HRating               INT(1),
   DistanceRange       INT(5) NOT NULL,
   CONSTRAINT Hotel_PK PRIMARY KEY (HotelAddress),
   AttractionCode       INT(8) NOT NULL,
   CONSTRAINT Hotel_FK1 FOREIGN KEY (AttractionCode) REFERENCES Attraction(AttractionCode)
);

CREATE TABLE Tour (
   TourCode           INT(8) NOT NULL,
   TouristGuide       VARCHAR(30) NOT NULL,
   Duration           INT(3) NOT NULL,
   Price               NUMERIC(3,2) NOT NULL,
   CONSTRAINT Tour_PK PRIMARY KEY (TourCode)
);

CREATE TABLE Customer (
   CustomerID           INT(10) NOT NULL,
   FName               VARCHAR(20) NOT NULL,
   LName               VARCHAR(20) NOT NULL,
   JoinDate           TIMESTAMP NOT NULL,
   TourCode           INT(8) NOT NULL,
   CONSTRAINT Customer_PK PRIMARY KEY (CustomerID),
   CONSTRAINT Customer_FK1 FOREIGN KEY (TourCode) REFERENCES Tour(TourCode)
);

CREATE TABLE Review (
   CommentID           INT(12) NOT NULL,
   Category           VARCHAR(30) NOT NULL,
   Title               VARCHAR(30),
   Comment               VARCHAR(100),
   RRating               INT(1) NOT NULL,
   AttractionCode       INT(8) NOT NULL,
   TourCode           INT(8) NOT NULL,
   CustomerID           INT(10) NOT NULL,
   CONSTRAINT Review_PK PRIMARY KEY (CommentID),
   CONSTRAINT Review_FK1 FOREIGN KEY AttractionCode REFERENCES Attraction(AttractionCode),
   CONSTRAINT Review_FK2 FOREIGN KEY TourCode REFERENCES Tour(TourCode),
   CONSTRAINT Review_FK3 FOREIGN KEY CustomerID REFERENCES Customer(CustomerID)
);

/* Route is a relationship between Attraction and Tour, it has a composite primary key. */
CREATE TABLE Route (
   AttractionCode       INT(8) NOT NULL,
   TourCode           INT(8) NOT NULL,
   RouteType           VARCHAR(20) NOT NULL,
   CONSTRAINT Route_CPK PRIMARY KEY (AttractionCode, TourCode)
)

Explanation / Answer

Hi, Please find updated Review table create statement syntax. Modified areas highlighted below.

CREATE TABLE Review (
CommentID INT(12) NOT NULL,
Category VARCHAR(30) NOT NULL,
Title VARCHAR(30),
Comment VARCHAR(100),
RRating INT(1) NOT NULL,
AttractionCode INT(8) NOT NULL,
TourCode INT(8) NOT NULL,
CustomerID INT(10) NOT NULL,
CONSTRAINT Review_PK PRIMARY KEY (CommentID),
CONSTRAINT Review_FK1 FOREIGN KEY (AttractionCode) REFERENCES Attraction(AttractionCode),
CONSTRAINT Review_FK2 FOREIGN KEY (TourCode) REFERENCES Tour(TourCode),
CONSTRAINT Review_FK3 FOREIGN KEY (CustomerID) REFERENCES Customer(CustomerID)
);

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