'd.GroupId IN (' . $this->Application->getUserGroups($user_id) . ')',
'd.Start IS NULL OR d.Start < ' . $this->getOrder()->GetDBField('OrderDate'),
'd.End IS NULL OR d.End > ' . $this->getOrder()->GetDBField('OrderDate'),
);
$sql = 'SELECT
CASE d.Type
WHEN ' . DiscountType::FLAT . ' THEN ' . $price . ' - d.Amount
WHEN ' . DiscountType::PERCENT . ' THEN ' . $price . ' * (1 - d.Amount / 100)
ELSE ' . $price . '
END, d.DiscountId
FROM ' . TABLE_PREFIX . 'Products AS p
LEFT JOIN ' . TABLE_PREFIX . 'ProductsDiscountItems AS di ON (di.ItemResourceId = p.ResourceId) OR (di.ItemType = ' . DiscountItemType::WHOLE_ORDER . ')
LEFT JOIN ' . TABLE_PREFIX . 'ProductsDiscounts AS d ON (' . implode(') AND (', $join_clause) . ')
WHERE (p.ProductId = ' . $product_id . ') AND (d.DiscountId IS NOT NULL)';