Radio Silence

A medium SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.

Domain

SQL

Difficulty

medium

Seniority

L3

Problem

Our mobile A/B tests keep a control group that runs on Android, and we're checking which of those users have gone quiet. For each one whose account is no longer active, return their age bracket alongside the platform and variant, oldest experiment assignment first.

Summary

Android control cohort. Gone quiet.

Practice This Problem

Solve this SQL problem with real code execution. DataDriven runs your SQL queries against a real database and grades it automatically.