# For each event, list the names of all its properties as prop_names and count how many properties it

Canonical URL: <https://datadriven.io/problems/for-each-event-list-the-names-of-all-its-properties-as-prop-068f04ba>

Domain: SQL · Difficulty: medium

## Problem

For each event, list the names of all its properties as prop_names and count how many properties it has as prop_count. Return event_id, prop_names, and prop_count.

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