全局搜索Firebase中的子元素

Question

想要了解 突出显示的密钥 的所有详细信息，而不知道以下数据模型中的其他父详细信息。该模型类似于 root / Transaction / UserId / userVehicle / userTransactionId

"1kGqXIjZVwglAK8MEepwVjzmyZo1": {
    "ORpoi3747": {
        "-KSQyvu1ZhiJX78B7FKr": {
            "CarPickAddress": {
                "addressLine1": "fjdj",
                "addressLine2": "ff",
                "carNumber": "",
                "city": "ff",
                "landmark": "ff",
                "mobileNumber": "5656",
                "pin": "55536",
                "state": "ff"
            },
            "agentAssigned": "adssdas",
            "requestStatus": "closed",
            "serviceCompleteDate": "25/09/2016",
            "serviceRequestDate": "09/24/2016 17:06:45"
        }
    }
}