Find the root beer with the most and least amount of profit per unit and list the container types in which these root beers are sold.
most amount of profit per unit refers to MAX(SUBTRACT(CurrentRetailPrice, WholesaleCost)); least amount of profit per unit refers to MIN(SUBTRACT(CurrentRetailPrice, WholesaleCost));
SELECT * FROM ( SELECT T1.BrandName, T2.ContainerType FROM rootbeerbrand AS T1 INNER JOIN rootbeer AS T2 ON T1.BrandID = T2.BrandID ORDER BY T1.CurrentRetailPrice - T1.WholesaleCost DESC LIMIT 1 ) UNION ALL SELECT * FROM ( SELECT T3.BrandName, T4.ContainerType FROM rootbeerbrand AS T3 INNER JOIN rootbeer AS T4 ON T3.BrandID = T4.BrandID ORDER BY T3.CurrentRetailPrice - T3.WholesaleCost ASC LIMIT 1 )