mysql procedure using cursor - mysql

Question

DELIMITER $$
CREATE PROCEDURE INSERT_NONE_HISTORY_CHECKBOX()
BEGIN
DECLARE note_id bigint(20);
FOR c1 IN
(SELECT question_id
FROM question_master
WHERE question_type LIKE '%check box%')
LOOP
SELECT note_section_id INTO note_id
FROM answer_master
WHERE question_id = c1.question_id
LIMIT 1;
INSERT INTO answer_master(QUESTION_ID, NOTE_SECTION_ID, ANSWER_TEXT
, ROS_INPUT_TEXT, HAS_CHILD_QUES, MEDICATIONS_LIST_ID, STATUS_CODE)
VALUES(c1.question_id,note_id,'none',null,0,null,1);
END LOOP;
END $$
DELIMITER ;
i am getting error like ::
Script line: 3 You have an error in your SQL syntax; check the manual that corresponds to >your MySQL server version for the right syntax to use near 'for c1 in (select question_id >from question_master where question_type like '%ch' at line 6
What am I doing wrong?

Answer 1

I don't think MySQL supports the FOR IN syntax you'll have to declare a cursor and loop using that.
DELIMITER $$
CREATE PROCEDURE INSERT_NONE_HISTORY_CHECKBOX()
BEGIN
DECLARE note_id bigint(20);
DECLARE Myquestion_id INTEGER;
DECLARE done BOOLEAN DEFAULT 0; //loop variable
DECLARE cur1 CURSOR FOR
SELECT question_id
FROM question_master
WHERE question_type LIKE '%check box%'; //declare the cursor
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = 1; //stop when done.
OPEN cur1; //Open it.
insert_loop: LOOP
FETCH cur1 INTO myquestion_id;
IF done THEN LEAVE insert_loop; END IF;
SELECT note_section_id INTO note_id
FROM answer_master
WHERE question_id = c1.question_id
LIMIT 1;
INSERT INTO answer_master(QUESTION_ID, NOTE_SECTION_ID, ANSWER_TEXT
, ROS_INPUT_TEXT, HAS_CHILD_QUES, MEDICATIONS_LIST_ID, STATUS_CODE)
VALUES(myquestion_id,note_id,'none',null,0,null,1);
END LOOP;
CLOSE cur1;
END $$
DELIMITER ;
The syntax is a bit cumbersome, but this should work.
See: http://dev.mysql.com/doc/refman/5.0/en/cursors.html