{
  "queryId": "qry-e5f6g7h8",
  "status": "completed",
  "rowCount": 10,
  "columns": [
    { "name": "customer_id", "type": "INTEGER" },
    { "name": "event_type", "type": "VARCHAR" },
    { "name": "event_time", "type": "TIMESTAMP" }
  ],
  "rows": [
    [100001, "purchase", "2026-04-18T09:30:00Z"],
    [100002, "login", "2026-04-18T09:31:00Z"]
  ]
}