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The Token Census
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 platform team needs a headcount of how many token owners issued at least one API token during 2026. Return a single count of unique owners.
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.