Where The Lights Stay On

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

Domain

SQL

Difficulty

medium

Seniority

L3

Problem

The SRE team is setting uptime SLA targets and needs to compare regions: give each region's average service uptime, most reliable first.

Summary

Every region promises reliability. See which ones keep it.

Practice This Problem

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