2.1 - INNER JOIN
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Practice Questions
Test your understanding with targeted questions
What does INNER JOIN do in SQL?
💡 Hint: Think about how it relates to two sets of data.
Write a basic INNER JOIN query to retrieve names from two related tables.
💡 Hint: Follow the structure of SELECT, FROM, JOIN.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the purpose of INNER JOIN?
💡 Hint: Focus on what INNER JOIN filters out.
True or False: INNER JOIN will return records even if there are no matches in both tables.
💡 Hint: Recall how INNER JOIN functions.
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Challenge Problems
Push your limits with advanced challenges
Write an INNER JOIN query that retrieves names and addresses of customers who have more than 3 orders.
💡 Hint: You need to group and filter based on the order count.
Discuss how you would optimize an INNER JOIN query for large datasets.
💡 Hint: Think about database performance best practices.
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