Name of each manufacturer along with the name and price of its most expensive product?
SELECT T1.Name ,  max ( T1.Price )  ,  T2.name FROM products AS T1 JOIN Manufacturers AS T2 ON T1.manufacturer   =   T2.code GROUP BY T2.name
name of each manufacturer refers to Manufacturers.name; name and price of its most expensive product refers to MAX(products.price) and products.name; JOIN is used to link manufacturers with products based on a common attribute; GROUP BY is used to aggregate results by manufacturer.