用JQ展平嵌套的JSON数组

{
  "data": [
    {
      "id": 1,
      "name": "John",
      "hobbies": ["reading", "coding"]
    },
    {
      "id": 2,
      "name": "Jane",
      "hobbies": ["swimming", "painting"]
    }
  ]
}

$ echo '{"data":[{"id":1,"name":"John","hobbies":["reading","coding"]},{"id":2,"name":"Jane","hobbies":["swimming","painting"]}]}'
  | jq '.data[] | {id, name, hobby: .hobbies[]}'

{
  "id": 1,
  "name": "John",
  "hobby": "reading"
}
{
  "id": 1,
  "name": "John",
  "hobby": "coding"
}
{
  "id": 2,
  "name": "Jane",
  "hobby": "swimming"
}
{
  "id": 2,
  "name": "Jane",
  "hobby": "painting"
}