The Loudest Failures

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 reliability team is running a postmortem on the error types that piled up across 2026. For each type, find how many were recorded that year, listed from most to least frequent.

Summary

Twelve months of errors. Which types showed up 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.