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

Domain

SQL

Difficulty

medium

Problem

Inner-join products to transactions on product_id. Per (product_id, product_name), count transactions. Return product_name and transaction_count. Sort by product_id ascending.

Practice This Problem

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