Service User Growth Rate

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

Domain

SQL

Difficulty

easy

Seniority

L4

Problem

The SRE team is measuring service adoption momentum heading into the new year. For each service, calculate the growth rate of health check activity between December 2025 and January 2026, defined as January's check count divided by December's.

Summary

User growth, service by service.

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