Biggest Deployment Decline

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

Domain

SQL

Difficulty

medium

Seniority

L4

Problem

A downstream report flagged a drop in one service's deploy frequency. Find which service had the biggest month-over-month drop in deployments from March to April 2026. Only include services that also appear in svc_health. Return just the service with the largest decline, showing the service name and the size of the decline.

Summary

One team's deploy count cratered. Which one?

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