I am using Microsoft SQL Server and trying to add a foreign key to the "Orders" table that references the primary key in my "Customer" table. I keep getting this message:
Msg 1769, Level 16, State 1, Line 28
Foreign key 'orders_customerid_fk' references invalid column 'CustomerID' in referencing table 'Orders'.
Msg 1750, Level 16, State 0, Line 28
Could not create constraint or index. See previous errors.
CREATE TABLE Customer
(
CustomerID INT NOT NULL PRIMARY KEY,
fName varchar(40),
lName varchar(40),
City varchar(40),
Country varchar(40),
Phone varchar(20)
);
CREATE TABLE Supplier
(
SupplierID INT NOT NULL PRIMARY KEY,
CompanyName varchar(40),
ContactName varchar(50),
ContactTitle varchar(40),
City varchar(40),
Country varchar(40),
Phone varchar(30),
Fax varchar(30),
);
CREATE TABLE Orders
(
OrderID INT NOT NULL PRIMARY KEY,
OrderDate datetime,
OrderNumber varchar(10),
TotalAmount decimal(12,2)
);
ALTER TABLE Orders
ADD CONSTRAINT Orders_CustomerID_FK
FOREIGN KEY(CustomerID) REFERENCES Customer(CustomerID);
You are missing the column that should receive the constrain of FK.
ALTER TABLE Orders
ADD CustomerID INT NULL; /*Adds a new int column existing rows will be
given a NULL value for the new column*/
Or
ALTER TABLE Orders
ADD CustomerID INT NOT NULL DEFAULT(0);
And then you can
ALTER TABLE Orders
ADD CONSTRAINT Orders_CustomerID_FK
FOREIGN KEY(CustomerID)
REFERENCES Customer(CustomerID)
;
added Default Constraint on a Foreign key column for default value so if the user does not supply value default value should be inserted. but instead of firing constraint, it shows Column name or number of supplied values does not match table definition.
--Table--
create table tblperson(
Id int not null,
Name nvarchar(50) not null,
Email nvarhcar(50) not null,
GenderId int
);
--tblGender--
Create Table tblGender(
ID int Not Null Primary Key,
Gender nvarchar(50)
);
--Add foreign Key--
Alter table tblPerson
add constraint tblPerson_GenderId_FK FOREIGN KEY (GenderId) references tblGender(ID)
--Default Constraint--
ALTER TABLE tblPerson
ADD CONSTRAINT DF_tblPerson_GenderId
DEFAULT 1 FOR GenderId
--Insert Statement--
insert into tblperson values(5,'Jake','j#j.com')
The answer to your question is:
insert into tblperson(Id, Name, Email) values(1,'Jake','j#j.com');
Most of people forget to write the columns names, you should always be carful of the columns names and the number of supplied values.
BTW, fix the typo in this line:
Email nvarhcar(50) not null,
it should be:
Email nvarchar(50) not null,
I am making a database which links together two tables via the primary key of the first table. The one with the primary key which links the two is created first but how do i make the second record get the ID of the record I just created?
create table Person
(
Person_ID int IDENTITY(100000,1) primary key,
First_Name varchar(20) not null,
Last_Name varchar(20) not null,
)
create table Employee
(
Employee_ID int identity(100000,1) primary key,
Person_ID int references Person(Person_ID),
Employee_Type varchar(10)
)
insert into Person(First_Name, Last_Name) values ('Michael', 'Chu');
insert into Employee(Person_ID, Employee_Type,) values (????????, 'Admin');
I've had a look at the 'last()' function but not really sure how to utilise that. Other then that, I have no idea. Can someone help me out or guide me in the right direction.
try this:
create table Person
(
Person_ID int IDENTITY(100000,1) primary key,
First_Name varchar(20) not null,
Last_Name varchar(20) not null,
)
create table Employee
(
Employee_ID int identity(100000,1) primary key,
Person_ID int references Person(Person_ID),
Employee_Type varchar(10)
)
DECLARE #myID AS INT
insert into Person(First_Name, Last_Name) values ('Michael', 'Chu');
SET #myID = ##IDENTITY
insert into Employee(Person_ID, Employee_Type,) values (#myID , 'Admin');
Create table test1
(
id bigint Not Null,
name varchar(10) Not Null
constraint pk_test primary key(id,name)
)
Create table test2
(
Mid bigint Not Null references test1(id) ,
MSalary varchar(10) Not Null
)
In test2 I am not able to create a reference to test1 id Please help me..
Thanks in Advance!!!!
You need a foreign key in order to reference a table. Try this:
CREATE TABLE test1
(
id bigint NOT NULL PRIMARY KEY,
name varchat(10) NOT NULL
)
CREATE TABLE test2
(
Mid bigint NOT NULL,
MSalary varchar(10) NOT NULL,
FOREIGN KEY (Mid) REFERENCES test1(id)
)
I'm pretty new to databases and I have this assignment that I've completed where I had to look at a merged Entity Relationship Diagram and then create Drop Tables, Tables (with constraints and identity's), Alterations and Indexes. I'm pretty sure I've coded everything correctly but the only area I'm a little unsure about, it's how to test that the database will actually function when executing it. My instructor gave me a TestData.sql file that I just have to refer to the database and then execute and it should insert all the data into the tables and drop everything correctly. I have it all hooked up properly on SQL Server Management Studio but I forget what steps I should be taking in order to test the proper execution of the tables. I'll post some of my code so you guys can take a look. Any information regarding this issue would be greatly appreciated!
Also, when it says in the Test Data SQL code "IMPORTANT! If you need to run this script more than once you must drop and recreate your tables first to reset the identity properties." --Does this mean that if I run into any errors while trying to execute the test data, I will have to execute the DROP TABLES first and then maybe copy and paste all the TABLES back into the Database file? I don't actually have to manually type all the TABLES again, just need to re-enter them as "new" so the system will kind of reset it's identity properties?
If you guys need me to post more of the code for clarification, just let me know. Thanks for taking the time to read this :)
Update: I'm getting 2 error messages when trying to execute the TestData script: "Invalid object name 'SaleDetail'." and "Invalid object name 'Author'." I've also provided the rest of the code from my Database script file for you to take a look at. I'm almost certain everything is correct.
Database Tables Code (this is the complete code script)
USE Lab2A_BooksGalore
GO
/*------ Drop Table Statements ------*/
IF EXISTS (SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'SaleDetail')
DROP TABLE SaleDetail
IF EXISTS (SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'AuthorTitle')
DROP TABLE AuthorTitle
IF EXISTS (SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'Title')
DROP TABLE Title
IF EXISTS (SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'Publisher')
DROP TABLE Publisher
IF EXISTS (SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'Category')
DROP TABLE Category
IF EXISTS (SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'Author')
DROP TABLE Author
IF EXISTS (SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'Sale')
DROP TABLE Sale
IF EXISTS (SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'Employee')
DROP TABLE Employee
IF EXISTS (SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'Customer')
DROP TABLE Customer
/*------- Create Table Statements -------*/
CREATE TABLE Customer
(
CustomerNumber int
CONSTRAINT PK_Customer_CustomerNumber
PRIMARY KEY
IDENTITY (1, 1) NOT NULL,
LastName varchar(30) NOT NULL,
FirstName varchar(30) NOT NULL,
[Address] varchar(40) NULL,
City varchar(30) NULL,
Province char(2)
CONSTRAINT DF_Customer_Province
DEFAULT ('AB') NULL,
PostalCode char(6)
CONSTRAINT CK_Customer_PostalCode
CHECK (PostalCode LIKE '[A-Z][0-9][A-Z][0-9][A-Z][0-9]')
NULL,
HomePhone char(10)
)
CREATE TABLE Employee
(
EmployeeNumber int
CONSTRAINT PK_Employee_EmployeeNumber
PRIMARY KEY
IDENTITY (300, 1) NOT NULL,
[SIN] char(9) NOT NULL,
LastName varchar(30) NOT NULL,
FirstName varchar(30) NOT NULL,
[Address] varchar(40) NULL,
City varchar(20) NULL,
Province char(2)
CONSTRAINT DF_Employee_Province
DEFAULT ('AB') NULL,
PostalCode char(6)
CONSTRAINT CK_Employee_PostalCode
CHECK (PostalCode LIKE '[A-Z][0-9][A-Z][0-9][A-Z][0-9]')
NULL,
HomePhone char(10) NULL,
WorkPhone char(10) NULL,
Email varchar(40) NULL,
)
CREATE TABLE Sale
(
SaleNumber int
CONSTRAINT PK_Sale_SaleNumber
PRIMARY KEY
IDENTITY (3000, 1) NOT NULL,
SaleDate datetime NOT NULL,
CustomerNumber int
CONSTRAINT FK_Sale_CustomerNumber_Customer_CustomerNumber
FOREIGN KEY REFERENCES Customer(CustomerNumber)
NOT NULL,
EmployeeNumber int
CONSTRAINT FK_Sale_EmployeeNumber_Employee_EmployeeNumber
FOREIGN KEY REFERENCES Employee(EmployeeNumber)
NOT NULL,
Subtotal money
CONSTRAINT CK_Sale_Subtotal
CHECK (Subtotal <= Total) NOT NULL,
GST money NOT NULL,
Total money
CONSTRAINT CK_Sale_Total
CHECK (Total >= Subtotal) NOT NULL,
)
CREATE TABLE Author
(
AuthorCode int
CONSTRAINT PK_Author_AuthorCode
PRIMARY KEY
IDENTITY (100, 1) NOT NULL,
LastName varchar(30) NOT NULL,
FirstName varchar(30) NOT NULL,
)
CREATE TABLE Category
(
CategoryCode int
CONSTRAINT PK_Category_CategoryCode
PRIMARY KEY
IDENTITY (1, 1) NOT NULL,
[Description] varchar(40) NOT NULL,
)
CREATE TABLE Publisher
(
PublisherCode int
CONSTRAINT PK_Publisher_PublisherCode
PRIMARY KEY
IDENTITY (200, 1) NOT NULL,
[Name] varchar(40) NOT NULL,
)
CREATE TABLE Title
(
ISBN char(10)
CONSTRAINT PK_Title_ISBN
PRIMARY KEY NOT NULL,
Title varchar(40) NOT NULL,
SuggestedPrice smallmoney
CONSTRAINT DF_Title_SuggestedPrice
DEFAULT (0) NOT NULL,
NumberInStock smallint
CONSTRAINT CK_Title_NumberInStock
CHECK (NumberInStock >= 0)
CONSTRAINT DF_Title_NumberInStock
DEFAULT (0) NOT NULL,
PublisherCode int
CONSTRAINT FK_Title_PublisherCode_Publisher_PublisherCode
FOREIGN KEY REFERENCES Publisher(PublisherCode)
NOT NULL,
CategoryCode int
CONSTRAINT FK_Title_CategoryCode_Category_CategoryCode
FOREIGN KEY REFERENCES Category(CategoryCode)
NOT NULL,
)
CREATE TABLE AuthorTitle
(
ISBN char(10)
CONSTRAINT FK_AuthorTitle_ISBN_Title_ISBN
FOREIGN KEY REFERENCES Title(ISBN)
NOT NULL,
AuthorCode int
CONSTRAINT FK_AuthorTitle_AuthorCode_Author_AuthorCode
FOREIGN KEY REFERENCES Author(AuthorCode)
NOT NULL,
)
CREATE TABLE SaleDetail
(
SaleNumber int
CONSTRAINT FK_SaleDetail_SaleNumber_Sale_SaleNumber
FOREIGN KEY REFERENCES Sale(SaleNumber)
NOT NULL,
ISBN char(10)
CONSTRAINT FK_SaleDetail_ISBN_Title_ISBN
FOREIGN KEY REFERENCES Title(ISBN)
NOT NULL,
SellingPrice money NOT NULL,
Quantity int NOT NULL,
Amount money NOT NULL,
)
/*----------------- Alter Table Statements --------------------*/
---1) Add a char(10) attribute named WorkPhone to the Customer Table
ALTER TABLE Customer
ADD WorkPhone char(10) NULL
GO
---2) Add a varchar(30) attribute named Email to the Customer Table
ALTER TABLE Customer
ADD Email varchar(30) NULL
GO
---3) Add a constraint to make sure the correct format is followed for the Email attribute
ALTER TABLE Customer
ADD CONSTRAINT CK_Customer_Email
CHECK (Email LIKE '[a-z, 0-9][a-z, 0-9][a-z, 0-9]%#[a-z, 0-9][a-z, 0-9][a-z, 0-9]%.[a-z, 0-9][a-z, 0-9]%')
--- Match For: b 8 l # g v t . c a
GO
---4) Add a char(1) attribute named Active that's required for the Employee Table
ALTER TABLE Employee
ADD Active char(1) NOT NULL
GO
---5) Add a constraint to make sure the default character is used for the Active attribute
ALTER TABLE Employee
ADD CONSTRAINT DF_Employee_Active
DEFAULT ('y')
GO
/*------------------ Foreign Key Index Statements -----------------*/
CREATE NONCLUSTERED INDEX IX_Sale_CustomerNumber
ON Sale (CustomerNumber)
CREATE NONCLUSTERED INDEX IX_Sale_EmployeeNumber
ON Sale (EmployeeNumber)
CREATE NONCLUSTERED INDEX IX_Title_PublisherCode
ON Title (PublisherCode)
CREATE NONCLUSTERED INDEX IX_Title_CategoryCody
ON Title (CategoryCode)
CREATE NONCLUSTERED INDEX IX_AuthorTitle_ISBN
ON AuthorTitle (ISBN)
CREATE NONCLUSTERED INDEX IX_AuthorTitle_AuthorCode
ON AuthorTitle (AuthorCode)
CREATE NONCLUSTERED INDEX IX_SaleDetail_SaleNumber
ON SaleDetail (SaleNumber)
CREATE NONCLUSTERED INDEX IX_SaleDetail_ISBN
ON SaleDetail (ISBN)
GO
Test Data Code(this is only a snippet being this script is 100% accurate - provided by instructor)
USE Lab2A_BooksGalore
GO
--Lab 2 insert script
--IMPORTANT! If you need to run this script more than once you must drop and recreate your tables first to reset the identity properties.
--Delete existing data in the tables, if there is any
Delete From SaleDetail
Delete From Sale
Delete From AuthorTitle
Delete From Title
Delete From Employee
Delete From Customer
Delete From Category
Delete From Publisher
Delete From Author
Go
Insert into Author
(LastName, FirstName)
Values
('Smith', 'Sammy'),
('Greens', 'George'),
('Jones', 'Johnny'),
('Davidson', 'David'),
('Robertson', 'Rob'),
('Abbots', 'Abe'),
('Bakers', 'Bob'),
('Caters', 'Clem'),
('Semenko', 'Dave'),
('Franky', 'Fran'),
('Horton', 'Harry'),
('Kelly', 'Kevin'),
('Lambert', 'Larry'),
('Johnson', 'Jon'),
('Anderson', 'Ander'),
('Peterson', 'Peter'),
('Jensen', 'Jens'),
('Issacsen', 'Issac')
Insert into Publisher
(Name)
Values
('Addison Westley'),
('SAMS'),
('Harlequin'),
('Self Publish Inc'),
('Microsoft Press'),
('Jones and Bartlett'),
('WROX'),
('West'),
('Premier')
Insert into Category
(Description)
Values
('Computers'),
('Business'),
('Human Relation'),
('Electronics'),
('Designs'),
('Miscellaneous'),
('Media Design'),
('Information Technologies')