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Top Active Senders per Channel
A medium SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.
- Domain
- SQL
- Difficulty
- medium
- Seniority
- mid
Problem
Show the top 3 most active senders by message count in each chat channel. Ties share the same rank with no gaps, which may produce more than 3 rows per channel. Return channel, sender ID, and message count.
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.