====== Distinct ======
source: [[https://www.elastic.co/guide/en/elasticsearch/reference/current/search-aggregations-bucket-terms-aggregation.html]]
===== Commande =====
On veux récupérer sous le nom de ''uniqDID'' les différents ''kSID'' contenus dans ''test/measures/''

''"size": 0'' est la pour limiter le nombre de document retournés a 0, car ce n'est pas les documents qui nous importent ici.

kSID**.keyword** est présent pour transformé le type text et keyword, car apparemment cela ne fonctionne que sur les keywords.

<code javascript>
GET test/measures/_search
{
    "size": 0,
    "aggs" : {
        "uniqDID" : {
            "terms" : { "field" : "kSID.keyword" }
        }
    }
}
</code>

===== En PHP =====
<code php>
$params = [
      "index" => "test",
      "type" => "measures",
      'body' =>
        [
        "size" => 0,
        "aggs" => [
          "uniqDID" => [
            "terms" => [
              "field" => "kSID.keyword"
            ]
          ]
        ]
      ]
    ];
    $client = ClientBuilder::create()->build();
    $result = $client->search($params);
</code>

===== Resultat =====
<code javascript>
{
  "took": 35,
  "timed_out": false,
  "_shards": {
    "total": 5,
    "successful": 5,
    "skipped": 0,
    "failed": 0
  },
  "hits": {
    "total": 491426,
    "max_score": 0,
    "hits": []
  },
  "aggregations": {
    "uniqDID": {
      "doc_count_error_upper_bound": 0,
      "sum_other_doc_count": 0,
      "buckets": [
        {
          "key": "PILL",
          "doc_count": 486154
        },
        {
          "key": "%YOURSID%",
          "doc_count": 3784
        },
        {
          "key": "toto",
          "doc_count": 73
        }
      ]
    }
  }
}
</code>