Daily and Weekly Active Users
A easy SQL mock interview question on DataDriven. Practice with AI-powered feedback, real code execution, and a hire/no-hire decision.
- Domain
- SQL
- Difficulty
- easy
- Seniority
- L3
Interview Prompt
The growth team needs a daily active user (DAU) time series. Count the unique users who had at least one session each calendar day, listed chronologically.
Summary
One metric by day, one by week. Same users, different lenses.
How This Interview Works
- Read the vague prompt (just like a real interview)
- Ask clarifying questions to the AI interviewer
- Write your sql solution with real code execution
- Get instant feedback and a hire/no-hire decision