json - 通过 jq 使一个(子)JSON 对象出现在一行上

Question

在 Cloud BigQuery 中，接受的 JSON 格式为:

One JSON object, including any nested/repeated fields, must appear on each line.

refer to: https://cloud.google.com/bigquery/data-formats#json_format

现在，给定一个 json:

{
  "1": {
    "kind": "person",
    "fullName": "John Doe",
    "age": 22,
    "gender": "Male",
    "citiesLived": [
      {
        "place": "Seattle",
        "numberOfYears": 5
      },
      {
        "place": "Stockholm",
        "numberOfYears": 6
      }
    ]
  },
  "2": {
    "kind": "person",
    "fullName": "Jane Austen",
    "age": 24,
    "gender": "Female",
    "citiesLived": [
      {
        "place": "Los Angeles",
        "numberOfYears": 2
      },
      {
        "place": "Tokyo",
        "numberOfYears": 2
      }
    ]
  }
}

如何通过jq将其转换为以下内容？

{"kind": "person", "fullName": "John Doe", "age": 22, "gender": "Male", "citiesLived": [{ "place": "Seattle", "numberOfYears": 5}, {"place": "Stockholm", "numberOfYears": 6}]}
{"kind": "person", "fullName": "Jane Austen", "age": 24, "gender": "Female", "citiesLived": [{"place": "Los Angeles", "numberOfYears": 2}, {"place": "Tokyo", "numberOfYears": 2}]}

Answer 1

这里的关键是“-c”选项，它实际上告诉 jq 使用 JSONLines 输出格式。

在您的特定情况下，解决方案很简单:

jq -c '.[]'

您的 shell 甚至可能允许您删除引号:-)