Practice - Subqueries
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Practice Questions
Test your understanding with targeted questions
What is a subquery?
💡 Hint: Think of it as a query within a query.
Which clause often contains subqueries?
💡 Hint: It filters results based on criteria.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is a subquery?
💡 Hint: Think about how queries can be structured within one another.
Do subqueries always perform better than JOINs?
💡 Hint: When do you think performance might be affected?
2 more questions available
Challenge Problems
Push your limits with advanced challenges
Construct a query to find product IDs for products that have been sold in orders totaling more than $500, using a subquery.
💡 Hint: Use SUM in the subquery to aggregate data.
Write a SQL statement to find users who have not made any purchases. Use a subquery to achieve this.
💡 Hint: Think about how to filter users based on absence in the orders.
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