DESCRIPTION >
    Aggregates distinct event names with counts per org/env.
    Used for listing available event names sorted by popularity.

SCHEMA >
    `org_id` String,
    `env` String,
    `event_name` String,
    `event_count` SimpleAggregateFunction(sum, UInt64)

ENGINE "AggregatingMergeTree"
ENGINE_SORTING_KEY "org_id, env, event_name"