我在使用 HIVE 解析 JSON 文件时需要帮助。该文件具有嵌套数组，当我尝试使用 HiVE UDF 解析文件或查询时，我可以向下钻取到一层。然后下一级数组在我的结果中出现 Null。我已经给出了下面的例子。文件有几个部分（数组），但下面给出的一个是最复杂的一个。我尝试使用 get_json_object 进行解析，我只能获取一级数据，它根本没有拉取嵌套数组。如果有人指导我解析嵌套的 json 数组会很有帮助
"section": {
"moodCode": "xxx",
"classCode": "xxx",
"templateId": {
"root": "2.xx.840"
},
"code": {
"codeSystemName": "LOINC",
},
"title": "problems",
"text": {
"mediaType": "text/x-hl7-text+xml",
"list": [{
"caption": "Recorded",
"item": {
"ID": "pr101",
"content": [{
"ID": "pr101-desc",
"text": "Salm"
},
"003.1"],
"text": " "
},
"text": " "
},
{
"caption": "Reported",
"item": "None Reported",
"text": " "
}],
"text": " "
},
"entry": {
"typeCode": "DRIV",
"act": {
"moodCode": "EVN",
"classCode": "ACT",
"templateId": [{
"root": "2.16.840.1.0.1.27"
},
{
"root": "1.3.6.1.4..1"
},
{
"root": "1.3.6.1.4.4.5.2"
}],
"id": {
"root": "068fd4d4-dfa2-48190768f"
},
"code": {
"nullFlavor": "NA"
},
"statusCode": {
"code": "completed"
},
"effectiveTime": {
"low": {
"value": "20140428144743+0100"
},
"high": {
"value": "20140428144743+0100"
},
"text": " "
},
"entryRelationship": {
"typeCode": "SUBJ",
"observation": {
"moodCode": "EVN",
"classCode": "OBS",
"templateId": [{
"root": "2.16.840.1.20.1.28"
},
{
"root": "1.3.6.1.4.1.5.3.1.4.5"
}],
"id": {
"root": "fa34b4da4dbb-b090-01bd4d6ef62b"
},
"code": {
"codeSystemName": "SNOMED CT",
"code": "282009",
"displayName": "diagnosis",
"codeSystem": "2.16.840.1.6.96"
},
"text": {
"reference": {
"value": "#pr101"
},
"text": " "
},
"statusCode": {
"code": "completed"
},
"effectiveTime": {
"low": {
"value": "20140428144743+0100"
},
"high": {
"nullFlavor": "UNK"
},
"text": " "
},
"value": {
"codeSystemName": "ICD-9",
"xsi:type": "CD",
"code": "003.1",
"displayName": "Sla sia",
"codeSystem": "2.16.840.1.103",
"originalText": {
"reference": {
"value": "#pr101-desc"
},
"text": " "
},
"text": " "
},
"entryRelationship": {
"typeCode": "REFR",
"observation": {
"moodCode": "EVN",
"classCode": "OBS",
"templateId": [{
"root": "2.16.840..1.50"
},
{
"root": "2.16.8410.20.1.57"
},
{
"root": "1.3.6.13.1.4.1.1"
}],
"code": {
"codeSystemName": "LOINC",
"code": "33999-4",
"displayName": "Status",
"codeSystem": "2.16.840.1.113883.6.1"
},
"statusCode": {
"code": "completed"
},
"value": {
"codeSystemName": " CT",
"xsi:type": "CE",
"code": "55563",
"displayName": "active",
"codeSystem": "2.16.8406.96"
},
"text": " "
},
"text": " "
},
"text": " "
},
"text": " "
},
"text": " "
},
"text": " "
},
"text": " "
},
"text": " "
},
当我使用 get_json_object 时，下面提到的数据出现了null。
"title": "problems",
"text": {
"mediaType": "text/x-hl7-text+xml",
"list": [{
"caption": "Recorded",
"item": {
"ID": "pr101",
"content": [{
"ID": "pr101-desc",
"text": "Salm"
},
"003.1"],