176. Detecting broken app version with mobile attribution data

After the successful launch Bindle rushed with feature development and accidentally shipped a buggy version. There was a critical error which prevent users from signing up.

Step by step we’re discovering applications for all columns in adjust.callbacks table. In the end, all data we have in the warehouse should work for us and bring us insights. We just need to ask the right questions and be able to translate them to SQL 😉 📊

💡 Such situations should be detected and fixed asap. ☝ Sometimes errors in the code are hard to detect and data is our only...

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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 adjust.callbacks
LIMIT 500
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