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New Monthly SQL Practice for March 2024!

Ready for our new SQL challenge? This time, we have prepared slightly more difficult SQL tasks. Here’s the March SQL Practice course!

This time, you will help Lilia who runs a genetic testing clinic. She needs insight into the performance of her clinic for February 2024 and has hired you as an SQL specialist to help her out. Can you identify the most popular tests? Can you create a report on patient preferences by age? The answers are hidden in the database; you just need to figure out how to get them out using SQL.

This SQL Practice is at an advanced level and is aimed at those who have finished our course Creating Basic SQL Reports or those who otherwise have the equivalent knowledge. If you do not feel comfortable using CASE WHEN, GROUP BY, and aggregate functions, make sure to check this course out first and then come back here for more practice.

Our interactive SQL course is a great way to test your skills and put what you have learned so far into practice. The exercises are fun, so you do not get bored while learning. And thanks to the interactive online console, you write real SQL queries and see their results. You do not need to install or set anything up. A web browser and your willingness to practice SQL are enough.

Maybe this is the first time you’ve come across our Monthly SQL Practices. offers one SQL Practice each month: basic levels on even-numbered months and advanced levels on odd-numbered months. Each SQL Practice takes about an hour (or less!) and contains 5–10 exercises to help you hone your skills.

Each Monthly SQL Practice features a different business or hobby. We’ve had practices featuring family trees, a language school, a book exchange, a job agency, rental cars, stars and astronomy, auto repair, baking, pizza, movies, U.S. cities, and more.

Our exercises are based on real business scenarios. There are no abstract theories here, just everyday business problems. You can copy most of the SQL queries you write in these exercises and use them in your own projects. This is what they call a hands-on SQL course!

As a reminder, this month’s SQL Practice is at an advanced level. Remember to use the hints!

Hungry for more SQL exercises? Check out our SQL Practice track featuring over 800 interactive SQL exercises. You’ll have brushed up your SQL coding skills before you know it!

Practice your SQL skills and help Lilia grow her clinic! Start the March 2024 SQL Practicecourse now!