I get this following error for some reason, and I know it has to do with the foreignkey I just added "UsesTruck" However I don't know WHAT it is I did wrong.. I have included only the tables I think are important for this issue.
CREATE TABLE Employee (
EmployeeID INT AUTO_INCREMENT,
Name VARCHAR(90) NOT NULL,
UsesTruck CHAR(20) NULL,
FOREIGN KEY (UsesTruck) REFERENCES Truck(LicensePlate),
PRIMARY KEY (EmployeeID));
CREATE TABLE Truck (
LicensePlate CHAR(20) NULL,
color VARCHAR(45) NULL,
capacity VARCHAR(45) NULL,
PRIMARY KEY (LicensePlate));
CREATE TABLE Shifts (
ShiftTime VARCHAR(15) NOT NULL,
PRIMARY KEY (ShiftTime));
CREATE TABLE Reservation (
ReservNum INT NOT NULL,
ReserveDate VARCHAR(45) NULL,
PickupTime VARCHAR(45) NOT NULL,
NumOfPassengers INT NULL,
sheduledTime VARCHAR(45) NULL,
ActualPickupTime VARCHAR(45),
ActualTime VARCHAR(45),
PricePaid VARCHAR(45),
DriverHourlyRate DECIMAL(7,2) NULL,
PassEmployeeHourlyRate DECIMAL (7,2) NULL,
DriverSalary VARCHAR(10),
PassEmployeeSalary VARCHAR(10),
Customer_CustomerID INT,
Truck_LicensePlate char(20) NULL,
Employee_EmployeeID_Driver INT,
Location_Address_Pickup VARCHAR(100),
Employee_EmployeeID_Passenger INT,
Location_Address_Drop VARCHAR(100),
PRIMARY KEY (ReservNum),
FOREIGN KEY (Customer_CustomerID) REFERENCES Customer (CustomerID),
FOREIGN KEY (Truck_LicensePlate) REFERENCES Truck (LicensePlate),
FOREIGN KEY (Employee_EmployeeID_Driver) REFERENCES Employee (EmployeeID),
FOREIGN KEY (Location_Address_Pickup) REFERENCES Location (Address),
FOREIGN KEY (Employee_EmployeeID_Passenger) REFERENCES Employee (EmployeeID),
FOREIGN KEY (Location_Address_Drop) REFERENCES Location (Address));
Try to run create Truck table firstly.
Related
I'm creating some mysql code with phpmyadmin for a school project and am getting the error "#1005 - Can't create table world_cup.goal (errno: 150 "Foreign key constraint is incorrectly formed") (Details…)".
I can't figure out why I'm getting the error. If I delete the GOAL entity, it still gives the error, but with the CARD entity. In fact, it doesn't like the last 4 entities I created. It has to do with the the foreign key I think.
WHAT I'VE TRIED:
making sure that all the FK and the referenced PK are the same datatype. They match perfectly.
I can't think of anything else to try.
This is due tomorrow so any help would be greatly appreciated! Thanks!
Here is the code:
DROP DATABASE IF EXISTS WORLD_CUP;
CREATE DATABASE WORLD_CUP;
USE WORLD_CUP;
CREATE TABLE TEAM(
Cid varchar(2) NOT NULL,
Continent varchar(20),
Confederation varchar(20) NOT NULL,
Population int,
CName varchar(20) NOT NULL,
PRIMARY KEY(Cid),
UNIQUE(CName)
);
CREATE TABLE PLAYER(
PCid varchar(2) NOT NULL,
Pno int NOT NULL,
Position varchar(20) NOT NULL,
Pfname varchar(20) NOT NULL,
Plname varchar(20) NOT NULL,
Weight int,
Height int,
Club varchar(20),
BDayMonth int,
BDayDay int,
BDayYear int,
PJName varchar(22) NOT NULL,
PRIMARY KEY(PCid, PNo),
FOREIGN KEY (PCid) REFERENCES TEAM(Cid)
);
CREATE TABLE GAME(
Gid varchar(2) NOT NULL,
Score1 int,
Score2 int,
Stadium varchar(20),
Team1Cid varchar(20) NOT NULL,
Team2Cid varchar(20) NOT NULL,
GMonth int,
GDay int,
GYear int,
GType char(1) NOT NULL,
KOGSubtype char(1),
PRIMARY KEY(Gid, Team1Cid, Team2Cid),
FOREIGN KEY(Team1Cid) REFERENCES TEAM(Cid),
FOREIGN KEY(Team2Cid) REFERENCES TEAM(Cid)
);
CREATE TABLE STADIUM(
Sid varchar(2) NOT NULL,
Sname varchar(20) NOT NULL,
Capacity int,
City varchar(20),
PRIMARY KEY(Sid)
);
CREATE TABLE GOAL(
GPno int NOT NULL,
GMinute varchar(6) NOT NULL,
GoalType char NOT NULL,
GGid varchar(2) NOT NULL,
PRIMARY KEY(GPno, GGid, GMinute) ,
FOREIGN KEY (GPno) REFERENCES PLAYER(Pno),
FOREIGN KEY (GGid) REFERENCES GAME(Gid)
);
CREATE TABLE CARD(
CPno int NOT NULL,
CMinute varchar(6) NOT NULL,
Color char(1) NOT NULL,
CGid varchar(2) NOT NULL,
PRIMARY KEY(CPno, CGid, CMinute) ,
FOREIGN KEY(CPno) REFERENCES PLAYER(Pno),
FOREIGN KEY(CGid) REFERENCES GAME(Gid)
);
CREATE TABLE SUBSTITUTE(
PInNo int NOT NULL,
POutNo int NOT NULL,
SMinute varchar(6) NOT NULL,
SGid varchar(2) NOT NULL,
SCid varchar(2) NOT NULL,
PRIMARY KEY(PInNo, POutNo, SMinute, SGid, SCid),
FOREIGN KEY (PInNo) References PLAYER(Pno),
FOREIGN KEY (POutNo) References PLAYER(Pno),
FOREIGN KEY (SGid) References GAME(Gid),
FOREIGN KEY (SCid) References TEAM(Cid)
);
CREATE TABLE STARTINGLINEUP(
SPno int NOT NULL,
PCid varchar(2) NOT NULL,
PGid varchar(2) NOT NULL,
PRIMARY KEY(SPno, PCid, PGid),
FOREIGN KEY (SPno) REFERENCES PLAYER(Pno),
FOREIGN KEY(PCid) REFERENCES TEAM(Cid),
FOREIGN KEY (PGid) REFERENCES GAME(Gid)
);
It's because the primary key on PLAYER is composite, so the foreign key that points to it has to be composite too.
My version of GOAL - note addition of GPCid and its inclusion in the foreign key:
CREATE TABLE GOAL(
GPCid varchar(2) not null,
GPno int NOT NULL,
GMinute varchar(6) NOT NULL,
GoalType char NOT NULL,
GGid varchar(2) NOT NULL,
PRIMARY KEY(GPno, GGid, GMinute) ,
FOREIGN KEY (GPCid,GPno) REFERENCES PLAYER(PCid,Pno),
FOREIGN KEY (GGid) REFERENCES GAME(Gid)
);
And similarly for CARD etc.
I am trying to create a database for a school project. I am getting the error specified in the title, and cannot figure out how to resolve it. I am not very experienced in mySQL but apparently the error is vague and can be a number of thing. It happens when I try to input the showing table.
`CREATE TABLE Complex(
name varchar(50) not null,
streetNum integer,
streetName varchar(50),
city varchar(50),
province varchar(50),
postalCode char(6),
numTheatres integer,
primary key(name)
);
CREATE TABLE Theatre(
complexName varchar(50) not null,
theatreNum integer not null,
maxSeats integer,
screenSize varchar(6),
foreign key (complexName) references Complex(name),
primary key (complexName, theatreNum)
);
CREATE TABLE Supplier(
compName varchar(50) not null,
streetName varchar(50),
streetNum varchar(50),
city varchar(50),
province varchar(50),
postalCode char(6),
phone char(10),
contactFName varchar(10),
contactLName varchar(10),
primary key (compName)
);
CREATE TABLE Movie(
title varchar(100) not null,
runningTime integer,
rating varchar(4),
synopsis varchar(500),
director varchar(100),
prodComp varchar(100),
supplierName varchar(100),
startDate date,
endDate date,
foreign key (supplierName) references Supplier(compName),
primary key (title)
);
Create Table Actor(
fName varchar(50) not null,
lName varchar(50) not null,
primary key (fName,lName)
);
create table Stars
(
fName varchar(100) not null references Actor(fName),
lName varchar(100) not null references Actor(lName),
title varchar(100) not null references Movie(title),
primary key (fName, lName, title)
);
CREATE TABLE Account(
accountNum integer not null AUTO_INCREMENT,
password varchar(50) not null,
fName varchar(50),
lName varchar(50),
phone char(10),
email varchar(50),
creditCard varchar(15),
cardExpiry char(4),
primary key (accountNum)
);
CREATE TABLE Showing(
complexName varchar(50) not null,
title varchar(100) not null,
theatreNum integer not null,
startTime time not null,
seatsAvailable integer,
foreign key (complexName) references Theatre(complexName),
foreign key (title) references Movie(title),
foreign key (theatreNum) references Theatre(theatreNum),
primary key (startTime)
);
CREATE TABLE Review(
title varchar(100) not null,
ID integer not null,
score integer,
primary key (ID),
foreign key (title) references Movie(title)
);
CREATE TABLE Reserved(
accountNum integer not null,
complexName varchar(50) not null,
theatreNum integer not null,
movieTitle varchar(50) not null,
startTime time not null,
ticketsNum integer,
foreign key (accountNum) references Account(accountNum),
foreign key (complexName) references Showing(compName),
foreign key (theatreNum) references Showing(theatreNum),
foreign key (movieTitle) references Showing(movieTitle),
foreign key (startTime) references Showing(startTime),
primary key (accountNum, complexName, theatreNum, movieTitle, startTime)
)
;`
This is one of the most common misunderstandings about foreign keys for beginners.
CREATE TABLE Theatre(
complexName varchar(50) not null,
theatreNum integer not null,
primary key (complexName, theatreNum)
CREATE TABLE Showing(
complexName varchar(50) not null,
theatreNum integer not null,
foreign key (complexName) references Theatre(complexName),
foreign key (theatreNum) references Theatre(theatreNum),
...
When you reference a table with a multi-column primary key, your foreign key must be multi-column as well. Don't declare two foreign key constraints. Declare one foreign key constraint with the same columns as the primary key it references.
CREATE TABLE Showing(
complexName varchar(50) not null,
theatreNum integer not null,
foreign key (complexName, theatreNum) references Theatre(complexName, theatreNum),
...
For more tips on foreign key, like a checklist of what needs to be true, see the top answer on this question: MySQL Creating tables with Foreign Keys giving errno: 150
Here is the code below, I'm not sure what this error means...
All I know is that it has something to do with the employeeshifts table.
Does it have something to do with foreign keys?
(insterting this text as I have nothing else to say, but stack requires a lot of text)
CREATE TABLE Customer (
CustomerID INT AUTO_INCREMENT,
Name VARCHAR(90) NOT NULL,
Phone VARCHAR(45) NULL,
CustomerAddress VARCHAR(45) NOT NULL,
PRIMARY KEY (CustomerID));
CREATE TABLE Location (
Address VARCHAR(100) NOT NULL,
Latitude VARCHAR(45) NULL DEFAULT ' ',
Longitude VARCHAR(45) NULL,
PRIMARY KEY (Address));
CREATE TABLE Employee (
EmployeeID INT AUTO_INCREMENT,
Name VARCHAR(90) NOT NULL,
PRIMARY KEY (EmployeeID));
CREATE TABLE Truck (
LicensePlate CHAR(20) NOT NULL,
color VARCHAR(45) NULL,
capacity VARCHAR(45) NULL,
PRIMARY KEY (LicensePlate));
CREATE TABLE Shifts (
ShiftTime DATETIME NOT NULL,
PRIMARY KEY (ShiftTime));
CREATE TABLE EmployeeShifts (
DesiredShift DATETIME NOT NULL,
EmployeeWorking VARCHAR(90) NOT NULL,
DateOfShift DATE,
PRIMARY KEY(DesiredShift, EmployeeWorking, DateOfShift),
FOREIGN KEY (EmployeeWorking) REFERENCES Employee(Name),
FOREIGN KEY (DesiredShift) REFERENCES Shifts(ShiftTime));
CREATE TABLE Reservation (
ReservNum INT NOT NULL,
ReserveDate DATE NULL,
PickupTime VARCHAR(45) NOT NULL,
NumOfPassengers INT NULL,
sheduledTime VARCHAR(45) NULL,
ActualPickupTime VARCHAR(45),
ActualTime VARCHAR(45),
PricePaid VARCHAR(45),
DriverHourlyRate DECIMAL(7,2) NOT NULL,
PassEmployeeHourlyRate DECIMAL (7,2) NOT NULL,
DriverSalary VARCHAR(10),
PassEmployeeSalary VARCHAR(10),
Customer_CustomerID INT,
Truck_LicensePlate char(20) NOT NULL,
Employee_EmployeeID_Driver INT,
Location_Address_Pickup VARCHAR(100),
Employee_EmployeeID_Passenger INT,
Location_Address_Drop VARCHAR(100),
PRIMARY KEY (ReservNum),
FOREIGN KEY (Customer_CustomerID) REFERENCES Customer (CustomerID),
FOREIGN KEY (Truck_LicensePlate) REFERENCES Truck (LicensePlate),
FOREIGN KEY (Employee_EmployeeID_Driver) REFERENCES Employee (EmployeeID),
FOREIGN KEY (Location_Address_Pickup) REFERENCES Location (Address),
FOREIGN KEY (Employee_EmployeeID_Passenger) REFERENCES Employee (EmployeeID),
FOREIGN KEY (Location_Address_Drop) REFERENCES Location (Address));
You need to reference UNIQUE or PRIMARY KEY column:
CREATE TABLE EmployeeShifts (
DesiredShift DATETIME NOT NULL,
EmployeeWorking VARCHAR(90) NOT NULL,
DateOfShift DATE,
PRIMARY KEY(DesiredShift, EmployeeWorking, DateOfShift),
FOREIGN KEY (EmployeeWorking) REFERENCES Employee(Name), -- name is not UNIQUE/PK
FOREIGN KEY (DesiredShift) REFERENCES Shifts(ShiftTime)
);
to:
CREATE TABLE EmployeeShifts (
DesiredShift DATETIME NOT NULL,
EmployeeID INT NOT NULL, -- here
DateOfShift DATE,
PRIMARY KEY(DesiredShift, EmployeeID, DateOfShift),
FOREIGN KEY (EmployeeID) REFERENCES Employee(EmployeeID),
FOREIGN KEY (DesiredShift) REFERENCES Shifts(ShiftTime)
);
SqlFiddleDemo
When I try to source these tables into MySQL, and it created all the tables. Then I start to populate the tables, and it will not let me populate the last table Rental_Invoice. Any suggestions?
The error is
ERROR 1452 (23000): Cannot add or update a child row: a foreign key
constraint fails (SFRC_HIDDEN.Rental_Invoice, CONSTRAINT
Rental_Invoice_fk_Client_Contact FOREIGN KEY (Client_ID)
REFERENCES Client_Contact (Client_ID))
create table Client_Contact
(
Client_ID int Primary Key Auto_Increment,
Client_First_Name varchar(50) Not Null,
Client_Last_Name varchar(50) Not Null,
Client_Address varchar(50),
Client_City varchar(50) Not Null,
Client_State Char(2) Not Null,
Client_Zip_Code varchar(20) Not Null,
Client_Phone varchar(20),
Client_Email varchar(30)
);
create table Owner_Contact
( Owner_ID int Primary Key,
Owner_First_Name varchar(50) Not Null,
Owner_Last_Name varchar(50) Not Null,
Owner_Address varchar(50),
Owner_City varchar(50) Not Null,
Owner_State varchar(2) Not Null,
Owner_Zip_Code varchar(20) Not Null,
Owner_Phone varchar(20),
Owner_Email varchar(30)
);
create table Property_Info
(Property_ID varchar(20) Primary Key,
Owner_ID int Not Null,
Property_Type varchar(30) Not Null,
Pets set('Yes','No') Not Null,
Internet set('yes','No') Not Null,
constraint Property_Info_fk_Owner_Contact
foreign key (Owner_ID)
references Owner_Contact (Owner_ID));
create table Rental_Invoice
( Invoice_ID int Primary Key,
Property_ID varchar(10) Not Null,
Client_ID int Not Null,
Arrival_Date date Not Null,
Departure_Date date Not Null,
Deposit_Amount decimal(5,2) Not Null,
Pet_Deposit_Amount decimal(7,2),
Pet_Type enum('cat', 'dog', ''),
Cleaning_Fee decimal(5,2) Not Null,
Rental_Rate decimal(5,2) Not Null,
Method_Of_Payment varchar(20) Not Null,
constraint Rental_Invoice_fk_Client_Contact foreign key (Client_ID) references Client_Contact (Client_ID)
);
Initial problem
Just a random guess since I don't have MySQL installed anywhere at the moment. But Client_ID in the dependent table is a VARCHAR and it refers to an INTEGER column in the parent table.
After Edit
The foreign key constraint is caused by inserting a row into Rental_Invoice that does not have a corresponding row in Client_Contact. In other words, your data violates the Rental_Invoice_fk_Client_Contact foreign key constraint that requires that Rental_Invoice.Client_ID refers to an existing row in Client_Contact with a matching Client_ID.
Where is the problem? i am trying to create the table comparein using the composed primary key from the table Episodi but there should be a problem that i can t see..
the primary key from the table is a combination of "numero" and "titolo_episodio"
create table Autori(
id_autore int auto_increment primary key,
nome varchar(15) not null,
cognome varchar(15) not null,
nome_arte varchar (15)
) ENGINE=InnoDB;
create table Serie(
nome varchar(25) primary key,
id_autore int(6),
descrizione varchar(400),
FOREIGN KEY (id_autore)REFERENCES Autori(id_autore)
) ENGINE=InnoDB;
create table Episodi(
titolo_episodio varchar(25) not null,
numero int not null,
durata time not null,
data_trasmissione date not null,
nome_serie varchar(25),
PRIMARY KEY(titolo_episodio,numero),
FOREIGN KEY (nome_serie)REFERENCES Serie(nome)
) ENGINE=InnoDB;
create table Personaggi(
id_pers int auto_increment primary key,
nome varchar(15) not null,
cognome varchar(15),
nazionalita varchar (15),
nome_serie varchar(25),
FOREIGN KEY (nome_serie)REFERENCES Serie(nome)
) ENGINE=InnoDB;
create table Utenti(
nickname varchar(15) primary key,
nazionalita varchar(15) not null,
mail varchar(25) not null,
pwd varchar(15) not null,
amministratore bool default 0 not null
) ENGINE=InnoDB;
create table Generi(
genere varchar(15) primary key
) ENGINE=InnoDB;
create table comparein(
id_pers int not null,
numero int not null,
titolo_episodio varchar(25),
FOREIGN KEY (id_pers)REFERENCES Personaggi(id_pers),
FOREIGN KEY (numero,titolo_episodio)REFERENCES Episodi(numero,titolo_episodio),
primary key(id_pers,numero,titolo_episodio)
) ENGINE=InnoDB;
I think you need to reference the PK columns in the same order as the primary key was defined. So instead of
FOREIGN KEY (numero,titolo_episodio)REFERENCES Episodi(numero,titolo_episodio)
use
FOREIGN KEY (titolo_episodio, numero) REFERENCES Episodi(titolo_episodio, numero)
SQLFiddle: http://sqlfiddle.com/#!2/363bd