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Databases Creating and Modifying Database Tables Creating and Modifying Database Tables Making Changes to a Database

Otec Perez Glass
Otec Perez Glass
7,678 Points

Is not Working!

The requirement is

Now recreate the MEMBERS table with the new FAVORITE_ROCK_ID column, and make sure it has a foreign key constraint to the ID column of the ROCKS table. The columns should now be: ID, FIRST_NAME, LAST_NAME, and FAVORITE_ROCK_ID.

My Solution was

CREATE TABLE MEMBERS ( 
 ID PRIMARY KEY,
 FIST_NAME,
 LAST_NAME,
 FAVORITE_ROCK_ID REFERENCES ROCKS(ID) );

Also tried different ways like

CREATE TABLE MEMBERS(
 ID INTEGER PRIMARY KEY,
 FIST_NAME VARCHAR(255),
 LAST_NAME VARCHAR(255), 
FAVORITE_ROCK_ID REFERENCES ROCKS(ID) );

The Error message is

Make sure you're creating all 4 columns: id, first_name, last_name, and favorite_rock_id. But I already have them

3 Answers

ivana kantnerova
ivana kantnerova
15,932 Points

maybe ... FIST_NAME vs. first_name and data type "int" should be in FAVORITE_ROCK_ID REFERENCES ROCKS(ID) );

like MySQL:

CREATE TABLE Orders ( OrderID int NOT NULL, OrderNumber int NOT NULL, PersonID int, PRIMARY KEY (OrderID), FOREIGN KEY (PersonID) REFERENCES Persons(PersonID) );

or SQL Server / Oracle / MS Access:

CREATE TABLE Orders ( OrderID int NOT NULL PRIMARY KEY, OrderNumber int NOT NULL, PersonID int FOREIGN KEY REFERENCES Persons(PersonID) ); from https://www.w3schools.com/sql/sql_foreignkey.asp

Otec Perez Glass
Otec Perez Glass
7,678 Points

Thanks for the information hope your are doing well ivana kantnerova


CREATE TABLE MEMBERS(
id int NOT NULL PRIMARY KEY,
first_name varchar NOT NULL,
last Name varchar NOT NULL,
FAVORITE_ROCK_ID REFERENCES ROCKS(ID)
);
CREATE TABLE MEMBERS(
 id int NOT NULL PRIMARY KEY,
 first_name varchar NOT NULL,
 last Name varchar NOT NULL,
 FAVORITE_ROCK_ID int foreign key REFERENCES ROCKS(ID) );

 CREATE TABLE MEMBERS( id int NOT NULL PRIMARY KEY,
 first_name varchar NOT NULL,
 last Name varchar NOT NULL,
 FAVORITE_ROCK_ID int,
 foreign key(FAVORITE_ROCK_ID) REFERENCES ROCKS(ID) );
ivana kantnerova
ivana kantnerova
15,932 Points

you forgot keyword "foreign key", and date type.. try this CREATE TABLE MEMBERS( id int NOT NULL PRIMARY KEY, first_name varchar NOT NULL, last Name varchar NOT NULL, FAVORITE_ROCK_ID int foreign key REFERENCES ROCKS(ID) ); or this CREATE TABLE MEMBERS( id int NOT NULL PRIMARY KEY, first_name varchar NOT NULL, last Name varchar NOT NULL, FAVORITE_ROCK_ID int, foreign key(FAVORITE_ROCK_ID) REFERENCES ROCKS(ID) );

I tried your code, but it still doesn't work.