Task: Text to Code
Input (English): SQL: SELECT product_name FROM Products EXCEPT SELECT product_name FROM Products
Feedback: You have to use order item id of order items table in place of product name of products table.
Output (English): SELECT product_name FROM Products EXCEPT SELECT T1.product_name FROM Products AS T1 JOIN Order_items AS T2 ON T1.product_id  =  T2.product_id