Переменные в хранимых процедурах MySQL

DELIMITER $$

DROP PROCEDURE IF EXISTS `NGS2`.`power`$$

CREATE PROCEDURE `NGS2`.`power`()
    BEGIN
    DECLARE str INT;
    SET str = 0;
    WHILE str < 3 DO
    SELECT o2.title, o.*
        FROM objects o, objects o2, object_properties_values opv
        WHERE opv.property = 914
            AND o.ID = opv.object
            AND o2.ID = opv.value
        ORDER BY o2.title, o.title
        LIMIT str,5;
    SET str = str + 1;
    END WHILE;
   
    END$$

DELIMITER ;

Error Code : 1064
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 'str,5;
    SET str = str + 1;
    END WHILE;
   
    END' at line 12
(0 ms taken)