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Practice SQL with
real company scenarios.

Click any question below, write SQL, run it live in your browser, and understand every concept in your language.

⚠️ Note: These questions may or may not have been asked at the companies shown — the goal is to teach SQL through real-world usecases.

#	Question	Company	Difficulty	✓
21	Find every restaurant that has never had a cancelled order — meaning it has zero orders with status = 'cancelled'. This includes restaurants with no orders at all, since they trivially satisfy 'never cancelled.' Use EXISTS or NOT EXISTS with a correlated subquery rather than aggregating and filtering afterward. Return restaurant_name and city, sorted alphabetically by restaurant_name. EXISTS · NOT EXISTS · Correlated Subquery	Zomato	mid

Practice SQL withreal company scenarios.