PostgreSQL check constraint for foreign key condition

Question

I have a table of users eg:

create table \"user\" (
    id serial primary key,
    name text not null,
    superuser boolean not null default false
);
         


        

Answer 1

I don't know if this is a good way to do it but it seems to work

    INSERT INTO user_has_job (user_id, job_id) VALUES (you_user_id, your_job_id)
    WHERE EXIST (
        SELECT * FROM user WHERE id=your_user_id AND superuser=true
    );