如何在SQL Server中使用触发器更新外键引用表？

Question

Say I have these tables:

CREATE TABLE person 
(
    person_id INT NOT NULL PRIMARY KEY,
    name VARCHAR NOT NULL,
    phone INT,
);

CREATE TABLE volunteers 
(
    person_id INT NOT NULL PRIMARY KEY,
    skill VARCHAR,
    FOREIGN KEY (person_id) REFERENCES person(person_id)
        ON DELETE CASCADE
        ON UPDATE CASCADE
);

Could I create a trigger on volunteers that could insert into person table when I insert a new record in volunteers table.

Like this:

INSERT INTO volunteers (person_id, name, skill) 
VALUES (12345, 'abc xyz', 'cooking');

If not using trigger, is there any alternatives?

Answer 1

I'm not going to write the code for you, but you can do the following:

• Create a view with all the columns you want, joining the tables.
• Write an instead of trigger to update the view

The use of such triggers on views is defined in the documentation .

The view would look like:

create view v_volunteers as 
    select v.person_id, p.name, v.skill
    from volunteers v join
         people p
         on p.person_id = v.person_id;