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Friday Spending Analysis
A hard SQL interview practice problem on DataDriven. Write and execute real sql code with instant grading.
- Domain
- SQL
- Difficulty
- hard
- Seniority
- junior, mid
Problem
For each Friday in the first 13 weeks of the year, calculate the average transaction amount. Show the week number and average amount.
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.