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Transaction Revenue by Customer
A medium SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.
- Domain
- SQL
- Difficulty
- medium
- Seniority
- junior, mid
Problem
Compute March 2026 transaction totals per customer. Only include users who made at least one transaction that month, sorted from highest spender to lowest.
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.