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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What SQL command is used to select data from a database?
💡 Hint: It's the first keyword in a SQL query.
Question 2
Easy
How would you limit results to only show 10 items?
💡 Hint: This clause comes at the end of your query.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is the purpose of the COUNT function in SQL?
- Count sales
- Count rows
- Count products
💡 Hint: Think about what you'd want to summarize when querying a database.
Question 2
True or False: The ORDER BY clause is optional in a SQL query.
- True
- False
💡 Hint: Consider if you always want sorted results.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given a table with product sales data, write a query to find products that sold more than 100 units, displaying the product ID and the total sold.
💡 Hint: You'll need to use COUNT and GROUP BY while filtering the results.
Question 2
Create a SQL query to determine how many different products were sold, considering only those with sales data in the last quarter.
💡 Hint: Focus on distinct counts and the date range filter.
Challenge and get performance evaluation