Total Hours Between Consecutive Events

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

Domain

SQL

Difficulty

hard

Seniority

L4

Problem

Our pipeline tracks user events with timestamps. For each event type, calculate the total hours elapsed between consecutive events of the same type.

Summary

Hours between state changes.

Practice This Problem

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