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Welcome to May 2022 SQL Practice! New tasks are waiting for you. If you’ve finished our Recursive Queries course or know how to use Common Table Expressions and recursive queries in SQL, this is a good way to test your database skills. Are you ready to solve the problems in our latest SQL practice?
In this story, you've just been hired as an SQL specialist by Tiffany, who owns an online learning website. Are you ready to use your database skills to help answer her business questions? Can you find the average number of students enrolled in a course? Calculate the average number of total hours spent by all students on a course?
The answers are hidden in the database, and it’s up to you to get them out. Practice your SQL skills and help Tiffany get the most out of her website!
Hint: In each exercise, you can see a sample of the data. Look in the right-hand menu, under the tab.
Have fun!
Course progress
Exercises completed
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Practice SQL with our coding challenges! Each month, there’s a new set of exercises to solve with real-time feedback.