Terms aggregation on multiple fields in Elasticsearch

Question

I'm trying to get some counts from Elasticsearch. I have a query:

GET index/_search
{
  "aggs": {
    "first-metadata": {
      "terms": {
        "field": "filters.metadata.first-metadata"
      }
    }
  }
}

and as a response I'm getting something like that:

"aggregations": {
  "first-metadata": {
    "buckets": [
      {
        "key": 87000,
        "doc_count": 2
      },
      {
        "key": 100000,
        "doc_count": 1
      }
    ]
  }
}

Everything is like I've expected. But the problem is that I have multiple metadata types: first-metadata, second-metadata and third-metadata and I would like to have something like that:

"aggregations": {
  "first-metadata": {
    "buckets": [
      {
        "key": 87000,
        "doc_count": 2
      },
      {
        "key": 100000,
        "doc_count": 1
      }
    ]
  },
  "second-metadata": {
    "buckets": [
      {
        "key": 5555,
        "doc_count": 24
      },
      {
        "key": 2222,
        "doc_count": 14
      },
      {
        "key": 3333,
        "doc_count": 7
      }
    ]
  },
  "third-metadata": {
    "buckets": [
      {
        "key": 7777,
        "doc_count": 23
      },
      {
        "key": 3333,
        "doc_count": 11
      }
    ]
  }
}

Is there any way to achieve such results in one aggregation query?

Answer 1

It is very simple

POST index/_search
{
  "aggs": {
    "first-metadata": {
      "terms": {
        "field": "filters.metadata.first-metadata"
      }
    },
    "second-metadata": {
      "terms": {
        "field": "filters.metadata.second-metadata"
      }
    }

  }
}