Behavioral Range

A easy SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.

Domain

SQL

Difficulty

easy

Seniority

L3

Problem

For each user, count their unique event types, including users with zero events. Users with no events should show 0. Return user ID and the event type count.

Summary

Power users don't just visit more. They do more things.

Practice This Problem

Solve this SQL problem with real code execution. DataDriven runs your SQL queries against a real database and grades it automatically.