INSERT INTO `payment_gateways` (`sort_id`, `name`, `alias`, `logo`, `fees`, `charge_currency`, `charge_rate`, `credentials`, `parameters`, `is_manual`, `instructions`, `mode`, `status`) 
SELECT 12, 'Paddle', 'paddle', 'images/payment-gateways/paddle.png', 0, NULL, NULL, '{\"vendor_id\":null,\"auth_code\":null,\"public_key\":null}', NULL, 0, NULL, 'sandbox', 0
FROM DUAL
WHERE NOT EXISTS (
    SELECT 1 
    FROM `payment_gateways` 
    WHERE `alias` = 'paddle'
);