Получение сценария от JSON до PostgreSQL

Question

Я новичок в JSON структуре данных, я хочу преобразовать приведенные ниже данные в структуру таблицы в Postgres. Может кто-нибудь подскажет, как это сделать?

Это скрипт, который я использую, но как получить массив child_events?

SELECT CAST(enrolment_info->>'id' as BIGINT) AS id,
    CAST(enrolment_info->>'assignee_id' as BIGINT)  AS assignee_id,
    CAST(enrolment_info->>'event_type' as   VARCHAR (50)) AS event_type,
    CAST(enrolment_info->>'previous_value'as TEXT)  AS previous_value
   ,CAST (values ->> 'ticket_id' as   BIGINT) as ticket_id,
    CAST (values ->> 'updater_id' as  BIGINT) as updater_id,
    CAST (values ->> 'timestamp' as   BIGINT) as timestamp,
    CAST (values ->> 'via' as   VARCHAR (50)) as via,
    CAST (values ->> 'event_type' as VARCHAR (50)) as event_type,
    CAST (values ->> 'id' as VARCHAR (50)) as id,
    CAST (values ->> 'created_at' as timestamp without time zone) as created_at
    FROM temp.api_data t, json_array_elements(t.values -> 'child_events') AS enrolment_info 

Ниже приведен пример JSON.

{
  "child_events": [
    {
      "id": 55956699,
      "via": "Web service",
      "via_reference_id": null,
      "assignee_id": 456,
      "event_type": "Change",
      "previous_value": null
    },
    {
      "id": 55956699,
      "via": "Web service",
      "via_reference_id": null,
      "group_id": 21117,
      "event_type": "Change",
      "previous_value": "24308"
    }
  ],
  "id": 55956699,
  "ticket_id": 1763,
  "updater_id": 515777,
  "via": "Web service",
  "created_at": "2020-05-04T12:54:08Z",
  "event_type": "Audit",
  "timestamp": 1588596848,
  "system": {
    "client": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/80.0.3987.163 Safari/537.36",
    "ip_address": null,
    "latitude": 52.5027,
    "location": "Delhi, IND, India",
    "longitude": xxxxx
  }
}