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

Domain

SQL

Difficulty

medium

Seniority

L5

Problem

The platform reliability team monitors latency trends per service. For each service's health check history, compute a 7-check rolling average of latency using the current check and the 6 checks immediately before it, ordered by check timestamp. Return the service name, check timestamp, raw latency, and the rolling average.

Summary

Seven entries hold the trend.

Practice This Problem

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