Database_Exception [ 1054 ]: Unknown column 'best_price' in 'order clause' [ SELECT COUNT(*) AS `records_found` FROM `parts` JOIN `parts_products` ON (`parts`.`id` = `parts_products`.`part_id`) WHERE `category_id` = 'motherboard' AND `parts_products`.`in_stock` = '1' GROUP BY `parts`.`id` ORDER BY `parts`.`manufacturer` ASC, `best_price` ASC ]