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Average Session Duration
A medium SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.
- Domain
- SQL
- Difficulty
- medium
- Seniority
- junior, mid
Problem
The engagement team wants each user's average session duration, defined as their total time in sessions divided by their total number of sessions. Exclude any sessions missing a recorded duration. Return the user ID and their average.
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.