Running marketing Identifying power referral users

80. Identifying power referral users

When running a referral program, it’s important to understandwho already shares your app, an who are those power users? Because who knows, maybe there’re more. 🚀

In this exercise, let’s find out the user ID of the most powerful referral user (a user who invited the most users).

The referrer_id column inside the users table contains a value of another user ID (ID of a user whose referral link was used). That user ID (inside the referrer_id column) is exactly the user ID we need to solve the exercise.

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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
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