Number each transaction within its user, ordered by transaction_date from earliest to latest

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

Domain

SQL

Difficulty

medium

Problem

Number each transaction within its user, ordered by transaction_date from earliest to latest. Show user_id, transaction_id, transaction_date, and the row number as txn_number.

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