Как запросить эти данные с эластичным участком

Question

Я пытаюсь найти самого старшего мужчину в каждой семье. Каждый человек в результатах должно быть не менее 18.

Вот данные: данных в формате CSV

id  FamilyId  LastName   FirstName   Age  Gender 
1  1   Smith   John    20  M 
2  1   Smith   Joan    20  F 
3.  1   Smith   Harry    1  M 
4  2   Ross    Pie    33  F 
5  2   Ross    Norman   30  M 
6  2   Ross    Devan    13  M 
7  2   Ross    Debra    9  F 
8  2   Ross    Terry    9  F 
9  3   Johnson   Mary    25  F 
10  4   King    Bob    5  M 

данных в формате JSON

[ 
    { 
    "id":1, 
    "FamilyId":1, 
    "LastName":"Smith", 
    "FirstName":"John", 
    "Age":20, 
    "Gender":"M" 
    }, 
    { 
    "id":2, 
    "FamilyId":1, 
    "LastName":"Smith", 
    "FirstName":"Joan", 
    "Age":20, 
    "Gender":"F" 
    }, 
    { 
    "id":3, 
    "FamilyId":1, 
    "LastName":"Smith", 
    "FirstName":"Harry", 
    "Age":1, 
    "Gender":"M" 
    }, 
    { 
    "id":4, 
    "FamilyId":2, 
    "LastName":"Ross", 
    "FirstName":"Pie", 
    "Age":33, 
    "Gender":"F" 
    }, 
    { 
    "id":5, 
    "FamilyId":2, 
    "LastName":"Ross", 
    "FirstName":"Norman", 
    "Age":30, 
    "Gender":"M" 
    }, 
    { 
    "id":6, 
    "FamilyId":2, 
    "LastName":"Ross", 
    "FirstName":"Devan", 
    "Age":13, 
    "Gender":"M" 
    }, 
    { 
    "id":7, 
    "FamilyId":2, 
    "LastName":"Ross", 
    "FirstName":"Debra", 
    "Age":9, 
    "Gender":"F" 
    }, 
    { 
    "id":8, 
    "FamilyId":2, 
    "LastName":"Ross", 
    "FirstName":"Terry", 
    "Age":9, 
    "Gender":"F" 
    }, 
    { 
    "id":9, 
    "FamilyId":3, 
    "LastName":"Johnson", 
    "FirstName":"Mary", 
    "Age":25, 
    "Gender":"F" 
    }, 
    { 
    "id":10, 
    "FamilyId":4, 
    "LastName":"King", 
    "FirstName":"Bob", 
    "Age":5, 
    "Gender":"M" 
    } 
] 

Вот данные я ожидаю:

id  FamilyId  LastName   FirstName   Age  Gender 
1  1   Smith   John    20  M 
5  2   Ross    Norman   30  M 

Данные как json

[ 
    { 
    "id":1, 
    "FamilyId":1, 
    "LastName":"Smith", 
    "FirstName":"John", 
    "Age":20, 
    "Gender":"M" 
    }, 
    { 
    "id":5, 
    "FamilyId":2, 
    "LastName":"Ross", 
    "FirstName":"Norman", 
    "Age":30, 
    "Gender":"M" 
    } 
] 

Мне не нужно поле id в результатах, если его слишком сложно получить. Такой вопрос возможен с помощью elasticsearch?

Answer 1

Это похоже на это; Сочетание filter agg и top hits agg (должен любить этот новый брендинг, да?):

POST /test_index/_search?search_type=count 
{ 
    "aggs": { 
     "males_18_and_over": { 
     "filter": { 
      "and": [ 
       { "term": { "Gender": "M" } }, 
       { "range": { "Age": { "gte": 18 } } } 
      ] 
     }, 
     "aggs": { 
      "last_names": { 
       "terms": { 
        "field": "LastName" 
       }, 
       "aggs": { 
        "max_age": { 
        "top_hits": { 
         "sort": [ 
          { 
           "Age": { 
           "order": "desc" 
           } 
          } 
         ], 
         "size": 1 
        } 
        } 
       } 
      } 
     } 
     } 
    } 
} 

возвращается:

{ 
    "took": 4, 
    "timed_out": false, 
    "_shards": { 
     "total": 1, 
     "successful": 1, 
     "failed": 0 
    }, 
    "hits": { 
     "total": 10, 
     "max_score": 0, 
     "hits": [] 
    }, 
    "aggregations": { 
     "males_18_and_over": { 
     "doc_count": 2, 
     "last_names": { 
      "buckets": [ 
       { 
        "key": "Ross", 
        "doc_count": 1, 
        "max_age": { 
        "hits": { 
         "total": 1, 
         "max_score": null, 
         "hits": [ 
          { 
           "_index": "test_index", 
           "_type": "doc", 
           "_id": "5", 
           "_score": null, 
           "_source": { 
           "id": 5, 
           "FamilyId": 2, 
           "LastName": "Ross", 
           "FirstName": "Norman", 
           "Age": 30, 
           "Gender": "M" 
           }, 
           "sort": [ 
           30 
           ] 
          } 
         ] 
        } 
        } 
       }, 
       { 
        "key": "Smith", 
        "doc_count": 1, 
        "max_age": { 
        "hits": { 
         "total": 1, 
         "max_score": null, 
         "hits": [ 
          { 
           "_index": "test_index", 
           "_type": "doc", 
           "_id": "1", 
           "_score": null, 
           "_source": { 
           "id": 1, 
           "FamilyId": 1, 
           "LastName": "Smith", 
           "FirstName": "John", 
           "Age": 20, 
           "Gender": "M" 
           }, 
           "sort": [ 
           20 
           ] 
          } 
         ] 
        } 
        } 
       } 
      ] 
     } 
     } 
    } 
} 

Вот код, который я использовал, чтобы установить его:

http://sense.qbox.io/gist/04742b9a9ce5b2b25a3829f0ffc719992ef20ad3