CREATE TABLE staff (staff_id DECIMAL, gender TEXT, first_name TEXT, last_name TEXT, email_address TEXT, phone_number TEXT)
CREATE TABLE products (product_id DECIMAL, parent_product_id DECIMAL, product_category_code TEXT, date_product_first_available TIME, date_product_discontinued TIME, product_name TEXT, product_description TEXT, product_price DECIMAL)
CREATE TABLE customers (customer_id DECIMAL, customer_type_code TEXT, address_line_1 TEXT, address_line_2 TEXT, town_city TEXT, state TEXT, email_address TEXT, phone_number TEXT)
CREATE TABLE complaints (complaint_id DECIMAL, product_id DECIMAL, customer_id DECIMAL, complaint_outcome_code TEXT, complaint_status_code TEXT, complaint_type_code TEXT, date_complaint_raised TIME, date_complaint_closed TIME, staff_id DECIMAL)

What is the name and category code of the product with the highest price?
SELECT product_name, product_category_code FROM products ORDER BY product_price DESC LIMIT 1
SELECT "product_name", "product_category_code" FROM "products" ORDER BY "product_price" DESC NULLS LAST LIMIT 1