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Cumulative Sales Per Customer
A medium SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.
- Domain
- SQL
- Difficulty
- medium
- Seniority
- mid, senior
Problem
The finance team wants to track each customer's spending trajectory over time. Show every transaction alongside the customer's cumulative total spend up to and including that row, ordered by transaction date.
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.