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Databases

Colby Wise
Colby Wise
3,165 Points
Posted by Colby Wise
Colby Wise
3,165 Points

Challenge Q2: Why doesn't this work?

ALTER TABLE t_movies ADD COLUMN pk_id INTEGER AUTO_INCREMENT PRIMARY KEY FIRST);

1 Answer

Steven Parker
Steven Parker
231,140 Points
Steven Parker
Steven Parker
231,140 Points

:point_right: It looks like you just have a typo.

There's a stray closing parenthesis at the end of the query.

Colby Wise
Colby Wise
3,165 Points
Colby Wise
Colby Wise
3,165 Points

Thanks Steven. Also I feel like i'm close on this one but can't quite figure it out:

Alter the "t_movies" table to add a foreign key column called "fk_genre_id" and constrain it to reference the "t_genres" "pk_id".

Q: What does it mean by reference the "t_genres" "pk_id".

ALTER TABLE t_movies 
ADD COLUMN fk_genre_id INTEGER, 
ADD CONSTRAINT FOREIGN KEY (t_genres)
REFERENCES t_genres(pk_id);