Where the Signal Drops

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

Domain

SQL

Difficulty

medium

Seniority

mid

Problem

On-call has been tracking API reliability and wants to know which endpoints are failing most often. Look only at endpoints with at least 20 calls, and for each one report its share of error responses (a 4xx or 5xx status), worst first.

Summary

Every endpoint answers. Some just answer wrong. Find the ones dropping the most.

Practice This Problem

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