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Binu Alexander
4,081 PointsStuck at the alter table statement
Task
Alter the "t_movies" table to add a foreign key called "fk_genre_id" and constrain it to reference the "t_genres" "pk_id".
my code
alter table t_movies add constraint foreign key(fk_genre_id) references t_genres(pk_id)
What is wrong with my statement ?
2 Answers
Piotrek Smyda
3,786 PointsHey,
You need to add new column for foreign key.
Your statement should be like this:
alter table t_movies add column fk_genre_id integer null, add constraint foreign key (fk_genre_id) references t_genres(pk_id)
Sobin Sebastian
5,348 Pointsalter table t_movies add column fk_genre_id integer null, add constraint foreign key (fk_genre_id) references t_genres(pk_id);