The Cloud Bill

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 finance team is reconciling cloud invoices and wants a monthly read on spend by provider, but the provider names arrive with inconsistent casing where 'aws' and 'AWS' both mean the same platform. Give the combined total for AWS, GCP, and Azure in each month, counting every billing entry, oldest month first.

Summary

Every provider sent an invoice. Every month tells a different story.

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