mysql procedures - running total - mysql

Question

When trying to run this in the SQL window in phpmyadmin the following error is returned..
SQL
DELIMITER $$
DROP FUNCTION IF EXISTS `stock_in_stock_ids` $$
CREATE DEFINER=`root`#`localhost` FUNCTION `stock_in_stock_ids`(_running_total_limit INT, _product_id INT, _block_id INT) RETURNS TEXT
BEGIN
DECLARE done INT DEFAULT FALSE;
DECLARE _running_qty INT DEFAULT 0;
DECLARE _id INT;
DECLARE _qty INT;
DECLARE _ids TEXT DEFAULT NULL;
DECLARE _cur CURSOR FOR
SELECT id, qty
FROM stock
WHERE block_id=_block_id && type=2 && product_id=_product_id
ORDER BY time DESC, id DESC;
DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;
OPEN _cur;
read_loop: LOOP
FETCH _cur INTO _id, _qty;
IF done THEN
SET _ids = '';
LEAVE read_loop;
END IF;
SET _running_qty = _running_qty + _qty;
SET _ids = CONCAT_WS(',', _ids, _id);
IF _running_qty >= _running_total_limit THEN
LEAVE read_loop;
END IF;
END LOOP read_loop;
CLOSE _cur;
RETURN _ids;
END $$
DELIMITER ;
error
#1418 - This function has none of DETERMINISTIC, NO SQL, or READS SQL DATA in its declaration and binary logging is enabled (you *might* want to use the less safe log_bin_trust_function_creators variable)
update (working solution)
SELECT qty, price_cost, #running_total:=#total running_total, #total:=#total+qty total
FROM stock, (SELECT #running_total:=0, #total:=0) vars
WHERE block_id=101 && type=2 && product_id=20
HAVING running_total<=3000
ORDER BY time DESC, id DESC

Answer 1

You want to use a stored procedure but are using a function. There's a difference, you know?
Also I think you don't need a procedure at all, let alone a cursor. Cursors are expensive as hell.
Does this get you what you want?
SELECT * FROM (
SELECT
id,
qty,
#running_total:=#running_total + qty as running_total
FROM stock
, (SELECT #running_total:=0) vars
WHERE block_id=_block_id && type=2 && product_id=_product_id
ORDER BY time DESC, id DESC
) sq
WHERE running_total <= $yourRunningTotalLimit