SELECT Product_Name FROM Products WHERE Product_ID NOT IN (SELECT Product_ID FROM Products_in_Events)
List the names of products that are not in any event.
SELECT Product_Name FROM Products WHERE Product_ID NOT IN ( SELECT Product_ID FROM Products_in_Events )
select product_name from products where product_id not in ( select product_id from products_in_events )
List the names of products that are not in any event .