type entier SQL

Question

Je suis en train de créer cette table simple:

CREATE TABLE BOOKLENDED 
(
LIBRARY_CARD_NUMBER INTEGER NOT NULL , 
FOREIGN KEY (LIBRARY_CARD_NUMBER) REFERENCES BORROWER (LIBRARY_CARD_NUMBER), 

SEQUENCE INTEGER UNIQUE, 

ISBN_NUMBER INT NOT NULL, 
FOREIGN KEY (ISBN_NUMBER) REFERENCES BOOK(ISBN_NUMBER), 

LIBRARIAN_ID INTEGER 
RETURN_DATE DATE NOT NULL, 
CHECKOUT_DATE DATE NOT NULL 
) 

Et je vais avoir cette erreur:

7: Unexpected token: INTEGER in statement [CREATE TABLE BOOKLENDED ( LIBRARY_CARD_NUMBER INTEGER NOT NULL , FOREIGN KEY (LIBRARY_CARD_NUMBER) REFERENCES BORROWER (LIBRARY_CARD_NUMBER),

SEQUENCE INTEGER]

Answer 1

Vous essayez de donner deux contraintes (NOT NULL,FOREIGN KEY) à temps. au lieu u peut ajouter le FOREIGN KEY à la fin: Essayez le follwing

CREATE TABLE BOOKLENDED 
(
LIBRARY_CARD_NUMBER INTEGER NOT NULL , 
SEQUENCE INTEGER, 
ISBN_NUMBER INT NOT NULL, 
LIBRARIAN_ID INTEGER, 
RETURN_DATE DATE NOT NULL, 
CHECKOUT_DATE DATE NOT NULL, 
UNIQUE (SEQUENCE), 
FOREIGN KEY (LIBRARY_CARD_NUMBER) REFERENCES BORROWER (LIBRARY_CARD_NUMBER), 
FOREIGN KEY (ISBN_NUMBER) REFERENCES BOOK(ISBN_NUMBER) 
);