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

Domain

SQL

Difficulty

medium

Seniority

L3

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.

Summary

Duplicated messages from the alerts topic.

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