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Feature Flag Engagement Impact
A hard SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.
- Domain
- SQL
- Difficulty
- hard
- Seniority
- senior
Problem
For each feature flag, show the flag name, display name, the total number of user sessions (zero if no sessions exist), and the percentage of those sessions that occurred while the flag was enabled.
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.