sku_id, type_id, cat_id,
"Отвертка Intertool, крестовая, красная", "Вид товара", "Инструмент"
"Отвертка Intertool, крестовая, красная", "Вид инструмента", "отвертка"
"Отвертка Intertool, крестовая, красная", "Тип отвертки", "крестовая"
"Отвертка Intertool, крестовая, красная", "размер", "PH6"
$sql .= ", (SELECT COUNT(*) FROM `oc_order` od WHERE od.customer_id = c.customer_id) AS count";
$sql .= ", (SELECT SUM(total) FROM `oc_order` od WHERE od.customer_id = c.customer_id) AS sum";
$sql .= ", (SELECT SUM(total)/COUNT(*) FROM `oc_order` od WHERE od.customer_id = c.customer_id) AS check";
$sql .= "SELECT COUNT(*)/SUM(total) AS check FROM `oc_order` od WHERE od.customer_id = c.customer_id";