| Аргумент | Возможный тип | Описание |
| $productId | — | — |
| $var='' | — | — |
return $this->db->query("SELECT `amazonus_sku`
FROM `" . DB_PREFIX . "amazonus_product_link`
WHERE `product_id` = '" . (int)$productId . "' AND `var` = '" . $this->db->escape($var) . "'
")->rows;