SQL FOREIGN KEY constraint in Insert - sql-server
I've got a problem to insert some values into table.
Microsoft SQL server management shows that:
The INSERT statement conflicted with the FOREIGN KEY constraint "FK__Players__Menager__55D59338". The conflict occurred in database
"TransferyProjekt", table "dbo.Menagers", column 'idMenager'.
My Create table script.
CREATE TABLE Menagers (
idMenager INT IDENTITY(1,1) NOT NULL,
[name] VARCHAR(30) NOT NULL CHECK (name LIKE '[A-Z]%'),
surname VARCHAR(30) NOT NULL CHECK (surname LIKE '[A-Z]%'),
phoneNumber VARCHAR(18) NOT NULL CHECK (phoneNumber LIKE '+[0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9][0-9]'),
PRIMARY KEY (idMenager)
);
CREATE TABLE Players (
idPlayer INT IDENTITY(1,1) NOT NULL,
[name] VARCHAR(30) NOT NULL,
surname VARCHAR(30) NOT NULL,
age DATE NOT NULL check (DATEDIFF(year,age,GETDATE()) > 18),
club INT NOT NULL,
Menager INT NOT NULL,
PRIMARY KEY (idPlayer),
FOREIGN KEY (club) REFERENCES Clubs(idClub),
FOREIGN KEY (Menager) REFERENCES Menagers(idMenager)
);
My insert look like.
INSERT INTO Menagers VALUES
('Adil','Green','+232247832'),
('Wicky','Dock','+301494064'),
('Alead','King','+447499384'),
('Darmian','Dagoly','+445587849'),
('Kamila','Dobra','+958789278'),
('Mateusz','Jankowiak','+849383098'),
('Lendy','Day','+448902920'),
('Martin','Lloyd','+501044468'),
('Adam','Dosh','+045033739'),
('Cristian','Cosy','+307748735'),
('Andrew','Lloyd','+635875452'),
('Matias','Banega','+520091224'),
('Carl','Rossi','+196935415'),
('Michał','Rolnik','+156541588'),
('Denny','Nowsky','+231785387'),
('Micky','Elly','+125774609'),
('George','Taylor','+094371433'),
('Barack','Obama','+916764868'),
('Jin','Chan','+906765545'),
('Lee','Konsu','+608935829'),
('Adam','Kenzo','+417708081'),
('Bryan','Along','+939454178'),
('Robert','Leey','+183354912'),
('Tom','Vardy','+576176145'),
('Kevin','Betword','+721582207');
INSERT INTO Players VALUES
('Lionel','Messi','1986-07-13','23','4'),
('Cristiano','Ronaldo','1986-04-11','23','5'),
('Sergio','Ramos','1986-09-07','23','12'),
('Łukasz','Piszczek','1986-11-20','23','14'),
('Robert','Lewandowski','1986-12-01','2','13'),
('Michał','Pazdan','1986-06-01','3','23'),
('Łukasz','Trałka','1986-05-02','7','20'),
('Łukasz','Teodorczyk','1986-04-14','6','18'),
('Mariusz','Miley','1985-03-06','3','26');
You should define column names if your source table and destination table has different column counts or different order
INSERT INTO Menagers([name],surname, phoneNumber )
VALUES
('Adil','Green','+232247832'),
('Wicky','Dock','+301494064'),
....
INSERT INTO Players([name], surname, age, club, Menager )
VALUES
('Lionel','Messi','1986-07-13','23','4'),
('Cristiano','Ronaldo','1986-04-11','23','5'),
...
Your foreign key and primary key columns are INT type. But, you are having following SQL
INSERT INTO Players VALUES
('Lionel','Messi','1986-07-13','23','4')
where last column belongs to foreign key column and your value is string.
A foreign key is a reference to a unique value in a different table, and SQL will ensure "referential integrity" - which means it won't let you end you with "orphaned" key references. When you insert a value to a foreign key column it must be a null or a existing reference to a row in the other table, and when you delete, you must delete the row containing the foreign key first, then the row it references.
If you don't, you will get an error such as you describe.
So enter the row into the "main" table first, then enter the "dependant" table information second.
In FK column I added unfortunately referece to row who is not exists in table Managers...
('Mariusz','Miley','1985-03-06','3','26');
but I don't have 26'th row in table Managers (Blame me, now) :(
Related
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This looks like the same issue as described here. When you try to create your foreign key: ALTER TABLE CUSTOMER ADD FOREIGN KEY (Job_ID) REFERENCES JOB(Job_ID); You are saying that you want to use the field Job_ID from the table CUSTOMER: ALTER TABLE CUSTOMER ADD FOREIGN KEY (Job_ID) and that the values in this field should match values in the Job_ID column from the table JOB: REFERENCES JOB(Job_ID); The problem is that your CUSTOMER table doesn't have a Job_ID column, based on its definition: CREATE TABLE CUSTOMER (Customer_ID INT NOT NULL PRIMARY KEY, Customer_Name VARCHAR(15) NOT NULL, Gender CHAR(1), Customer_Type VARCHAR(12) NOT NULL, Addresss VARCHAR(20) NOT NULL, Telephone_No CHAR(10) NOT NULL); The fields in the CUSTOMER table are Customer_ID,Customer_Name,Gender,Customer_Type,Addresss and Telephone_No. So you either need to add a Job_ID column to the CUSTOMER table, or specify a different field to use in your ALTER TABLE statement - one which does exist in the CUSTOMER table. More information on ALTER TABLE and ADD FOREIGN KEY specifically can be found here.
Foreign key references invalid table. Could not create constraint or index
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set the column code as foreign key on table with a reference to another table
enter image description hereI got a problem regarding my two table. The name of one table tblShoes and the other one is tblplayer. the problem is I want to Set the column Code in table tblPLAYERS as FOREIGN KEY with a reference to table tblSHOES column code. but I trying to insert my code in table tblPLAYER but it doesn't work can you help me and explain why please. here is my two table. create table tbl_Shoe ( code varchar not null primary key, brand varchar not null, model int not null, size varchar not null ); create table tbl_PLAYER ( RosterNo int primary key, Name varchar , Position varchar, Code varchar primary key (code), foreign key (Code) references tblShoe (code) ); help me please! you are very big help for me. thanks a lot. this is my code http.clickimage
When you define a foreign key, you're saying "hey database, guarantee that this value exists in the other table". In your case, you're saying that for whatever value you're putting in the tblPlayer.Code column, there needs to be a matching row that has the same value in tblShoe. For example, if I only have codes A, B, and C in tblShoe and I try to insert a row into tblPlayer with a code of D, it won't work.
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SQL Server - Adding foreign key to a table
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Error upon creating tables in sqlplus
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The order that you drop or create tables are important because if you have foreign keys referencing another table, you cant delete that table before deleting your own table. In this example, the Borrower table has to be dropped before the BorrowerType table.