Creating a trigger with a case statement

Question

I have these two tables:

USERS(username, role_id)
COMMISSION_RATES(username, commission_rate)

users.username is the primary ke

Answer 1

WHEN condition must be in the definition part, not in the body. They can only by used for row trigger.

create or replace
TRIGGER SETCOMISSIONRATE 
AFTER INSERT ON USERS 
FOR EACH ROW
WHEN (NEW.role_id = 2)
BEGIN
    INSERT INTO COMISSION_RATE
    (username,
    comission_rate)
    VALUES (
    :NEW.username,
    0)

END;