Duplicated User Event Messages

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

Domain

SQL

Difficulty

medium

Seniority

junior

Problem

We need a load-testing replay tool that doubles every row from the 'user-events' topic. For each row, produce two identical copies showing the message ID, topic, partition key, payload, produced timestamp, and consumer. The output should be ordered by message ID.

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