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Daily and Weekly Active Users
A easy SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.
- Domain
- SQL
- Difficulty
- easy
- Seniority
- junior
Problem
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.
Practice This Problem
Solve this SQL problem with real code execution. DataDriven runs your SQL queries against a live PostgreSQL database and grades it instantly.