Alert Severity

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

Domain

SQL

Difficulty

hard

Seniority

L5

Problem

The streaming infrastructure team is analyzing message ordering within each topic. For each message, show its offset, the previous message's offset within the same topic, its dense rank by offset within the topic, and its sequential row number within the topic. Only include messages that have a predecessor in the same topic.

Summary

When the alarms go off, who screams loudest?

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