Ниже приведен JSON, который я пытаюсь прочитать, и КОД для вашего прочтения:
У меня просто проблема при чтении раздела «полевые заказы», когда в нем нет значений. Мне все еще нужно показать их пустые значения, если у него нет какой-либо структуры. Я могу прочитать пару других объектов, которые имеют несколько разделов без каких-либо проблем. когда у нас есть объект без каких-либо значений, у меня возникает проблема, и мне нужно просто разместить нулевые значения в случае, если я не нахожу никаких значений в этом объекте.
Getting the below Error:
**Failed to coerce output value false to type ARRAY**
Образец JSON файла, который я использую для читать данные:
{
"projectnumber": "X.6001877",
"operationnumber": "O.6001877.01",
"opactivitynumber": "B.6001877.01.01",
"jobtypes": null,
"jobtypesinfo": [
{
"jobtype": "CC-SERV",
"jobgroup": "CPS-CC",
"staticattributes": [
{
"name": "OAJTOPT",
"description": "OA Job Type OPT",
"type": "Double",
"value": 0.0,
"uom": null
}
]
}
],
"actualactivitystartdate": "2018-01-17T05:00:00",
"actualactivityenddate": "2018-01-29T05:00:00",
"serverdatetime": null,
"ServerDateTime": "2019-01-20T16:36:48.106",
"projectSettings": null,
"customerContacts": null,
"actualequipments": null,
"welldetails": [
{
"Number": "1-1IH",
"Name": "XXXX 58-4X",
"State": "PL",
"Country": "Col",
"Field": "LABCD",
"Uwi": null,
"Environment": "Land",
"WellId": "0065",
"Latitude": 3.8,
"Longitude": -72.2,
"Type": null,
"WaterDepth": null,
"WellPlaceholderId": null,
"IsNonMasteredWell": false
}
],
"lastopeventid": null,
"personnelassignmentinfo": null,
"status": null,
"accountingunit": null,
"erpsystem": "ITT",
"CreatedDate": "2020-01-20T16:36:48.106",
"CreatedBy": "ABCD11",
"LastModifiedDate": "2020-01-20T16:36:48.106",
"LastModifiedBy": "ABCD11",
"Id": "A.6001877.01.01",
"country": {
"Code": "CO",
"Name": "CoOOOOOO"
},
"attributes": {
"Attributes": [
{
"AttributeName": "OAOPDXAS",
"AttributeDescription": "Activity OPD",
"DataType": "Integer",
"UOMType": "Dimensionless",
"BaseUnit": "",
"IsCalculated": true,
"Values": null
},
{
"AttributeName": "OpActOPTime",
"AttributeDescription": "OA Operating Time - OPT (HRS)",
"DataType": "Float",
"UOMType": "Dimensionless",
"BaseUnit": "",
"IsCalculated": true,
"Values": null
}
],
"DailyAttributes": null,
"MultiAttributes": null,
"Id": "A.6001877.01.01"
},
"operationalevent": [
{
"operatingevent": {
"projectnumber": "C.6001877",
"operationnumber": "O.6001877.01",
"operationactivitynumber": "X.6001877.01.01",
"operationaleventdetails": {
"status": null,
"description": "Non-Operational Event",
"plannedeventid": null,
"jobgroup": null,
"jobtype": null,
"startdatetime": "2020-01-18T05:00:00",
"enddatetime": "2020-01-15T05:00:00",
"comments": "Non-Operational Event",
"eventtype": "Project",
"isdeleted": false,
"category": "NonOperational",
"islocked": false,
"lockedon": "0001-01-01T05:00:00",
"lockedby": null,
"audittrailinfo": {
"CreatedDate": "2020-01-20T15:36:17.816",
"CreatedBy": "ABCD11",
"LastModifiedDate": "2020-01-20T15:36:17.816",
"LastModifiedBy": "ABCD1111",
"Id": null
},
"personnel": {
"assignment": [
]
},
"serverdatetime": "2018-01-20T16:36:56.185",
"equipmentdata": {
"equipmentassignments": [
]
},
"eventtypeattributes": null,
"id": "E97A5DBC",
"oesummary": null,
"journal": null,
"well": null,
"isactive": true,
"externaltransactionhistoryinfo": [
{
"status": "Pending",
"message": null,
"type": "MPT",
"riteservicereporturl": null,
"CreatedDate": "0001-01-01T00:00:00",
"CreatedBy": null,
"LastModifiedDate": "0001-01-01T00:00:00",
"LastModifiedBy": null,
"Id": null
}
],
"pnmconsumptiondata": {
"pnmconsumptions": [
]
}
},
"CreatedDate": "2018-01-20T16:36:56.185",
"CreatedBy": "ABCD11",
"LastModifiedDate": "2020-01-20T16:36:56.185",
"LastModifiedBy": "ABCD11",
"Id": "A.6001877.01.01_OperationalEvent_E97A5DBC"
},
"attributes": null
}
],
"attendance": [
],
**"fieldorders": [
]**
}
BigQuery SQL Код:
CREATE TEMPORARY FUNCTION CUSTOM_JSON_EXTRACT(json STRING, json_path STRING)
RETURNS ARRAY<STRING>
LANGUAGE js AS """
return jsonPath(JSON.parse(json), json_path);
"""
OPTIONS (
library="gs://json_temp/jsonpath-0.8.0.js"
);
SELECT job_id,oe_descr,
attr_name,
well_name,
job_type,
--field_id
from lz.json_actuals,
UNNEST(CUSTOM_JSON_EXTRACT(conv_column, '$.operationalevent[*].operatingevent.operationaleventdetails.description')) oe_descr with offset oedescr,
UNNEST(CUSTOM_JSON_EXTRACT(conv_column, '$.attributes.Attributes[*].AttributeName')) attr_name with offset attrb,
UNNEST(CUSTOM_JSON_EXTRACT(conv_column, '$.welldetails[*].Name')) Well_name with offset wll,
UNNEST(CUSTOM_JSON_EXTRACT(conv_column, '$.jobtypesinfo[*].jobtype')) job_type with offset jt,
--UNNEST(CUSTOM_JSON_EXTRACT(conv_column, '$.fieldorders[*].id')) field_id WITH OFFSET fld
;