Practice - Table Subqueries (Derived Tables / Inline Views)
Practice Questions
Test your understanding with targeted questions
What is a table subquery?
💡 Hint: Think about how it is structured within a SQL statement.
Why do we need to give a derived table an alias?
💡 Hint: Consider how we call that specific result set later.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is a subquery used in the FROM clause called?
💡 Hint: Recall what term is often associated with subqueries in this context.
True or False: Subqueries can only return a single value.
💡 Hint: Think about the different forms that subqueries can take.
2 more questions available
Challenge Problems
Push your limits with advanced challenges
Create a SQL command that identifies all products with an average price from a derived table that only includes products in stock and their sales are high.
💡 Hint: Use AVG and GROUP BY in the derived table to calculate total prices.
Write a SQL statement that gets customer details for those who have bought more than three products from a derived table filtering for high-value purchases.
💡 Hint: Use SUM for total purchases and HAVING for filtering based on the number of products.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.