For Which order was the most profitable, please list the customer name of the order and the profit of the order.
Most profitable order can be computed as MAX(MULTIPLY(quantityOrdered, SUBTRACT(priceEach, buyPrice)).
SELECT t3.customerName, (t1.priceEach - t4.buyPrice) * t1.quantityOrdered FROM orderdetails AS t1 INNER JOIN orders AS t2 ON t1.orderNumber = t2.orderNumber INNER JOIN customers AS t3 ON t2.customerNumber = t3.customerNumber INNER JOIN products AS t4 ON t1.productCode = t4.productCode GROUP BY t3.customerName, t1.priceEach, t4.buyPrice, t1.quantityOrdered ORDER BY (t1.priceEach - t4.buyPrice) * t1.quantityOrdered DESC LIMIT 1