72. Biggest age group in USA

In the previous lesson we’ve applied grouping and counting technique to users age. We also discussed an idea of segmenting records by different parameters – age, country, marketing campaign etc to guide our marketing or product actions.

In this exercise let’s segment users by age and country to answer the question “What’s the biggest age group in USA?”.

If the answer is middle age just type it in the answer field.

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Anatoli Makarevich, author of SQL Habit About SQL Habit

Hi, it’s Anatoli, the author of SQL Habit. 👋

SQL Habit is a course (or, as some of the students say, “business simulator”). It’s based on a story of a fictional startup called Bindle. You’ll play a role of their Data Analyst 📊 and solve real-life challenges from Business, Marketing, and Product Management.

SQL Habit course is made of bite-sized lessons and exercises (you’re looking at one atm). They always have a real-life setting and detailed explanations. You can immediately apply everything you’ve learned at work. 🚀

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-- Type in your query here. You might want to start by listing all records: SELECT * FROM users
LIMIT 500
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