Aggregating nested objects¶

GET /department/_search
{
  "size": 0,
  "aggs": {
    "employees": {
      "nested": {
        "path": "employees"
      }
    }
  }
}

GET /department/_search
{
  "size": 0,
  "aggs": {
    "employees": {
      "nested": {
        "path": "employees"
      },
      "aggs": {
        "minimum_age": {
          "min": {
            "field": "employees.age"
          }
        }
      }
    }
  }
}