The Quiet Outlier

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

Domain

SQL

Difficulty

hard

Seniority

L4

Problem

An SRE is chasing a latency outlier but wants to set aside the readings that show up constantly across normal traffic. Among the latency values that appear no more than twice in all API calls, surface the largest one.

Summary

Ignore what the traffic does all day. Find the spike that barely showed up.

Practice This Problem

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