$ ekos clickhouse ask --json "how many orders have status shipped?"
{
  "audit_event_id": "be4f1866-7fe2-475e-aaf5-32566cbd1d0d",
  "columns": [
    "COUNT(order_id)"
  ],
  "row_count": 1,
  "rows": [
    {
      "COUNT(order_id)": "3"
    }
  ],
  "sql": "SELECT COUNT(order_id) FROM ekos_test.orders WHERE status = 'shipped' LIMIT 1000",
  "summary": "1 row(s) returned for: SELECT COUNT(order_id) FROM ekos_test.orders WHERE status = 'shipped' LIMIT 1000"
}

# Seed data (5 rows): order_id 1,3,5 -> status='shipped'; 2 -> 'pending'; 4 -> 'cancelled'.
# 3 is the correct answer -- checked against the actual fixture, not just "didn't crash".