The Accumulator

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

Domain

SQL

Difficulty

hard

Seniority

L4

Problem

The FinOps dashboard needs a daily cloud cost time series with a running cumulative total so stakeholders can see how spending accumulates through the billing period. Show each billing date, its daily spend, and the cumulative spend through that date.

Summary

A total that builds row by row. Structure the query to match.

Practice This Problem

Solve this SQL problem with real code execution. DataDriven runs your SQL queries against a real database and grades it automatically.