CREATE TABLE products (product_type_code VARCHAR2, product_price NUMBER)

What are the highest and lowest prices of products, grouped by and alphabetically ordered by product type?
SELECT MAX(product_price), MIN(product_price), product_type_code FROM products GROUP BY product_type_code ORDER BY product_type_code
SELECT MAX("product_price"), MIN("product_price"), "product_type_code" FROM "products" GROUP BY "product_type_code" ORDER BY "product_type_code"