6. Write a SELECT statement that returns these three columns: product_name The product_name column from the Products table list_price Product List price from Products table Item_id Item_Id from the Orider_Items table Return one row for each product that has never been sold. Hint: Use an outer join and only return rows where the Item_Id column contains a null value. Result should look like: 7. Use the UNION operator to generate a result set consisting of three columns from the Products table: