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Weekly Transaction Day Split
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
For each week, compute what percentage of that week's transaction volume occurred on Monday versus Sunday. Round to the nearest whole number and return results by week.
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.