why does MySQL Trigger that uses cursor only fetch one value - mysql

Question

I have created a Trigger after INSERT on the table AcademicYearTermLevel which uses a cursor value fetched from another query. I want to use each cursor value in a while loop and insert rows into table SubjectYearTermLevel.
DROP TRIGGER IF EXISTS after_academicyearterm_insert
DELIMITER $$
CREATE TRIGGER after_academicyearterm_insert
AFTER INSERT
ON AcademicYearTerm
FOR EACH ROW
BEGIN
DECLARE temp INT;
DECLARE subj_done, form_done BOOLEAN DEFAULT FALSE;
DECLARE s_id INT;
DECLARE curSubject CURSOR FOR SELECT subject_id FROM Subject;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET subj_done = TRUE;
SET temp = 1;
OPEN curSubject;
cur_subject_loop: LOOP
FETCH FROM curSubject INTO s_id;
IF subj_done THEN
CLOSE curSubject;
LEAVE cur_subject_loop;
END IF;
WHILE temp <= 6 DO
INSERT INTO SubjectYearTermLevel VALUES (NULL, s_id, NEW.yearTerm_id, temp);
SET temp = temp + 1;
END WHILE
END LOOP cur_subject_loop;
END$$
DELIMITER ;
However the problem is that the cursor only seems to fetch one value from the SELECT query

Answer 1

Silly mistake, I SET temp = 1; outside the FETCH, and hence after the first cursor value, the while loop never ran.
-- SET temp = 1;
OPEN curSubject;
cur_subject_loop: LOOP
FETCH FROM curSubject INTO s_id;
SET temp = 1;
IF subj_done THEN
CLOSE curSubject;
LEAVE cur_subject_loop;
END IF;
1_to_6_temp: WHILE temp <= 6 DO
INSERT INTO SubjectYearTermLevel VALUES (NULL, s_id, NEW.yearTerm_id, temp, -1);
SET temp = temp + 1;
END WHILE 1_to_6_temp;
-- CLOSE curSubject;
END LOOP cur_subject_loop;