96. Identifying the most popular book in the catalogue

Joins, filters and grouping are a foundation of data analysis. When we applied them to users and purchases we are able to get insights like revenues per country/per age group etc.

Of course we shouldn’t stop there. When looking at users and books we can get a lot of content insights – trends in categories, popular/not popular books etc.

Let’s find what’s the most popular book in the Bindle’s library. In other words – let’s find a book name which is being read by the most amount of users.

⚠ Since we need to count users per book it could happen...

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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 books_users
LIMIT 500
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