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Cheapest and Most Expensive Service per Region
A hard SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.
- Domain
- SQL
- Difficulty
- hard
- Seniority
- mid, senior
Problem
Combining data from both the cloud costs and cost allocations tables, which services are the most and least expensive per region? For each region, show the names of the highest-cost and lowest-cost services.
Practice This Problem
Solve this SQL problem with real code execution. DataDriven runs your SQL queries against a live PostgreSQL database and grades it instantly.