Calculate the unit price for each transaction by dividing total_amount by quantity

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

Domain

SQL

Difficulty

medium

Problem

Calculate the unit price for each transaction by dividing total_amount by quantity. Use NULLIF to prevent division-by-zero errors. Show transaction_id, total_amount, quantity, and the result as unit_price.

Practice This Problem

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