Elasticsearch查询去重

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GET  /nb_luban_answer/_search
{
  "query": {
    "match": {
      "status": 1
    }
  },
  "sort": [
    {
      "createTime": {
        "order": "desc"
      }
    }
  ],"aggs": {
    "qid": {
      "terms": {
        "field": "qid",
        "size": 10
      },"aggs": {
        "rated": {
          "top_hits": {
            "sort": [{
              "createTime": {"order": "desc"}
            }], 
            "size": 1
          }
        }
      }
    }
  }, 
  "size": 0,
  "from": 0
} 

执行结果

{
  "_shards": {
    "total": 4,
    "failed": 0,
    "successful": 4
  },
  "hits": {
    "hits": [],
    "total": 4,
    "max_score": 0
  },
  "took": 4,
  "timed_out": false,
  "aggregations": {
    "qid": {
      "doc_count_error_upper_bound": 0,
      "sum_other_doc_count": 0,
      "buckets": [
        {
          "rated": {
            "hits": {
              "hits": [
                {
                  "_index": "nb_luban_answer",
                  "_type": "luban_answer",
                  "_source": {
                    "img": "{\r\n  \"img1\" : \"11111'><SCRIPT>alert(11111)</SCRIPT>'\",\r\n  \"img2\" : \"2222'><SCRIPT>alert(11111)</SCRIPT>'\",\r\n  \"img3\" : \"33333'><SCRIPT>alert(11111)</SCRIPT>'\"\r\n}",
                    "pin": "motai869",
                    "createTime": "2017-03-09 00:00:00",
                    "id": "SN-0000001792-9-1",
                    "tableNameSuffix": "1",
                    "qid": "SN-0000001536-9-3",
                    "content": "888'><SCRIPT>alert(11111)</SCRIPT>'",
                    "status": 1
                  },
                  "_id": "SN-0000001792-9-1",
                  "sort": [
                    1489017600000
                  ],
                  "_score": null
                }
              ],
              "total": 2,
              "max_score": null
            }
          },
          "doc_count": 2,
          "key": "SN-0000001536-9-3"
        },
        {
          "rated": {
            "hits": {
              "hits": [
                {
                  "_index": "nb_luban_answer",
                  "_type": "luban_answer",
                  "_source": {
                    "img": "{\r\n  \"img1\" : \"jfs/t3184/361/7557351412/2685/17143f65/58b91982N4e71a5d8.jpg\",\r\n  \"img2\" : \"jfs/t3184/361/7557351412/2685/17143f65/58b91982N4e71a5d8.jpg\",\r\n  \"img3\" : \"jfs/t3184/361/7557351412/2685/17143f65/58b91982N4e71a5d8.jpg\"\r\n}",
                    "pin": "motai869",
                    "createTime": "2017-03-03 00:00:00",
                    "id": "SN-0000001280-9-3",
                    "tableNameSuffix": "3",
                    "qid": "SN-0000000256-0-3",
                    "content": "hahaha",
                    "status": 1
                  },
                  "_id": "SN-0000001280-9-3",
                  "sort": [
                    1488499200000
                  ],
                  "_score": null
                }
              ],
              "total": 1,
              "max_score": null
            }
          },
          "doc_count": 1,
          "key": "SN-0000000256-0-3"
        },
        {
          "rated": {
            "hits": {
              "hits": [
                {
                  "_index": "nb_luban_answer",
                  "_type": "luban_answer",
                  "_source": {
                    "pin": "motai869",
                    "createTime": "2017-03-02 00:00:00",
                    "id": "SN-0000208128-8-1",
                    "tableNameSuffix": "1",
                    "qid": "SN-0000207872-9-3",
                    "content": "hahaha",
                    "status": 1
                  },
                  "_id": "SN-0000208128-8-1",
                  "sort": [
                    1488412800000
                  ],
                  "_score": null
                }
              ],
              "total": 1,
              "max_score": null
            }
          },
          "doc_count": 1,
          "key": "SN-0000207872-9-3"
        }
      ]
    }
  }
}

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