99. Calculating ROI

We’ve made it 👏 🍾 😅 We’ve learned everything we need to calculate ROI! We know how to work with subqueries, we know how to join tables together, how to group and count records or calculate sums.

These are ingredients of pretty much any metric and you should be feeling like finishing a marathon right now! All right, all right – there are a couple of kilometers left! See you at the finish line 🚀

Total revenue per campaign

Let’s start with the first ROI part – earnings. We’ll calculate it per campaign, to make sure it’s actionable – we can use it to...

“well worth the money”
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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 (you’re looking at one atm) and exercises. They always have a real-life setting and detailed explanations. You can immediately apply everything you’ve learned at work. 🚀

“well worth the money”

Fluent in SQL in a month

Master Data Analysis with SQL with real life examples from Product Management, Marketing, Finance and more.
-- Type your query here, for example this one -- lists all records from users table: SELECT * FROM users
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