SCHEMA:
CREATE TABLE products_booked (product_id VARCHAR, booked_amount INTEGER); CREATE TABLE Products_for_hire (product_id VARCHAR, booked_amount INTEGER)
USER:
How many products are never booked with amount higher than 200?

QUERY:
SELECT COUNT(*) FROM Products_for_hire WHERE NOT product_id IN (SELECT product_id FROM products_booked WHERE booked_amount > 200)