按數組過濾器長度查詢 ElasticSearch

Question

我有一個包含整數數組的道具：

_source: {
  counts: [
    11,
    7,
    18,
    3,
    22
  ]
}

從另一篇文章我知道我可以使用以下范圍過濾：

{
  "query": {
    "bool": {
      "must": {
        "match_all": {}   
      },  
      "filter": {
        "range": {
          "counts": {
            "gte": 10,
            "lte": 20
          }
        }
      }
    }
  }
}

但是，我還需要知道范圍匹配計數是否大於某個數字。 例如，我只想要返回在 10 到 20 之間匹配的counts少於 3 的記錄。

Answer 1

使用的映射：

{
  "properties" : {
    "counts" : {
      "type" :    "integer"
    }
  }
}

這些是我索引的文檔：

{
  "took": 4,
  "timed_out": false,
  "_shards": {
    "total": 5,
    "successful": 5,
    "failed": 0
  },
  "hits": {
    "total": 3,
    "max_score": 1,
    "hits": [
      {
        "_index": "test_index",
        "_type": "test",
        "_id": "2",
        "_score": 1,
        "_source": {
          "counts": [
            13,
            17
          ]
        }
      },
      {
        "_index": "test_index",
        "_type": "test",
        "_id": "1",
        "_score": 1,
        "_source": {
          "counts": [
            11,
            7,
            18,
            3,
            22
          ]
        }
      },
      {
        "_index": "test_index",
        "_type": "test",
        "_id": "3",
        "_score": 1,
        "_source": {
          "counts": [
            11,
            19
          ]
        }
      }
    ]
  }
}

現在試試這個查詢：

    {
          "query": {
            "bool": {
              "must": {
                "match_all": {}   
              },  
              "filter": [
                        {"script" : { "script" : "doc['counts'].values.size() < 4" }},
                         {"range": { "counts": { "gte": 10, "lte": 20 } }}
                        ]
                }
          }
 }

結果：僅返回文檔 ID 2 和 3。 文檔 1 沒有返回。

{
  "took": 29,
  "timed_out": false,
  "_shards": {
    "total": 5,
    "successful": 5,
    "failed": 0
  },
  "hits": {
    "total": 2,
    "max_score": 1,
    "hits": [
      {
        "_index": "test_index",
        "_type": "test",
        "_id": "2",
        "_score": 1,
        "_source": {
          "counts": [
            13,
            17
          ]
        }
      },
      {
        "_index": "test_index",
        "_type": "test",
        "_id": "3",
        "_score": 1,
        "_source": {
          "counts": [
            11,
            19
          ]
        }
      }
    ]
  }
}

這是你想要做的嗎？