Top Services by Uptime

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

Domain

SQL

Difficulty

medium

Seniority

L4

Problem

The SRE team maintains an uptime leaderboard. Rank services by average uptime, but only include services with at least 5 health checks. Tied services share the same rank with no gaps. Return the top 3 ranks, including ties. Round to 2 decimal places.

Summary

Uptime is a competition. Which services never blink?

Practice This Problem

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