如何在elasticsearch中的查询中获得唯一的结果？

Question

我一直在尝试在弹性搜索中的查询中获得独特的结果。下面给出了我编写的查询。我正在尝试找到一种解决方案，以便在名为“便士”的领域获得独特的结果。预先感谢。

    {
  "query": {
      "exists": {
        "field": "penny"
      }
    }
  }
}

Answer 1

尝试

terms

聚合

您的文件

PUT /unique_results/_bulk
{"create":{"_id":1}}
{"penny":400012121312}
{"create":{"_id":2}}
{"penny":400012121312}
{"create":{"_id":3}}
{"penny":400012121396}
{"create":{"_id":4}}
{"penny":400012121334}
{"create":{"_id":5}}
{"penny":400012121334}

查询

GET /unique_results/_search?filter_path=aggregations
{
    "aggs": {
        "by_penny": {
            "terms": {
                "field": "penny",
                "size": 10
            }
        }
    }
}

回应

{
    "aggregations" : {
        "by_penny" : {
            "doc_count_error_upper_bound" : 0,
            "sum_other_doc_count" : 0,
            "buckets" : [
                {
                    "key" : 400012121312,
                    "doc_count" : 2
                },
                {
                    "key" : 400012121334,
                    "doc_count" : 2
                },
                {
                    "key" : 400012121396,
                    "doc_count" : 1
                }
            ]
        }
    }
}