Where the Talking Stops

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

Domain

SQL

Difficulty

easy

Seniority

L3

Problem

The community team is auditing channel health, from the busiest rooms down to the ghost towns. For each channel with at least five messages, report the total message count, how many different people posted, and what percentage of messages were later edited, busiest first.

Summary

Which channels are ghost towns?

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