Question

I have to create trigger in my SQLite database.

There are 3 tables in database

• questions (question_id)
• options (option_id, question_id)
• answers (answer_id, question_id)

Whenever any row is deleted from question table, the corresponding data should also be deleted from option and answer tables.

I am trying to create trigger using

CREATE TRIGGER question_delete
BEFORE DELETE ON questions
FOR EACH ROW BEGIN
DELETE from options WHERE question_id= OLD.question_id AND
DELETE from answers WHERE question_id= OLD.question_id;
END

I get an error. Should I create two different trigger to perform this operation or any changes are required in above statement?

Please let me know.

Thanks
Nidhi

Answer 1

Remove the AND after the first DELETE statement:

DELETE from options WHERE question_id = OLD.question_id;
DELETE from answers WHERE question_id = OLD.question_id;