Brainlag
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38/39 lessons

Funnels and retention

35 min4 exercisesPremium

Follow a game's players from signup to first purchase, measure who comes back in week one, and stop a LEFT JOIN hiding the non-buyers.

The skill
Measure how many people get through each step of a product, and how many come back, with one flag per person built in steps.
You make
A funnel and a week-one retention report for a puzzle game's first four months.

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Builds on 37 Pivots, rows into columns. Free to try: SQL Foundations and the playground.

Step 1 of 7
exercise_1.sql

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4 exercises in this lesson, checked as you type. Premium opens every lesson after Foundations, in all four courses.

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