弹性搜索未返回附近输入日期的记录

Question

下面是索引定义和带有查询的示例记录

***正在寻找匹配名称为“aaa”且日期从 2020-01-01 开始的记录，所以我不应该得到任何记录，因为弹性搜索中没有日期记录 >2020-01-05 *** 但是，通过以下输入，我仍然从弹性搜索中获取记录，就好像它只考虑名称字段查询一样。

创建索引 邮政 http://localhost:9200/gauss_index1/date_format

  "mappings": {
    "properties": {
      "date": {
        "type":   "date",
        "format": "yyyy-MM-dd"
      },
      "name":{
        "type":   "text"
          
      }
    }
  }
}Add records : 
PUT http://localhost:9200/gauss_index1/date_format/1
{

      "date": "2019-01-05",
      "name": "aaa"
}
PUT http://localhost:9200/gauss_index1/date_format/2
{

      "date": "2019-02-05",
      "name": "bbb"
}

PUT http://localhost:9200/gauss_index1/date_format/3
{
      "date": "2019-03-05",
      "name": "ccc"
}

Search 
POST http://localhost:9200/gauss_index1/date_format/_search

 {
    "query": {
        "function_score": {
            "functions": [
                {
                    "gauss": {
                        "date": {
                            "origin": "2020-03-01",
                            "scale": "10d",
                            "offset": "5d"
                        }
                    }
                }
            ],
            "query": {
                "multi_match": {
                    "query": "aaa"
                    "fields": [
                        "name"
                    ]
                }
            }
        }
    }
}


 **Returns only record matching with name aaa but as mentioned in gauss origin is march 1 onwards needs to be searched 
 but I am getting records of only conditin matching name equals "aaa"
 

Answer 1

正如@Val 指出的那样，分配的分数将为0 - 您可以通过使用?explain=true 运行查询来验证这一点。

如果您确实想严格排除此类文档，请应用范围过滤器：

{
  "query": {
    "function_score": {
      "functions": [
        {
          "gauss": {
            ...
          }
        }
      ],
      "query": {
        "bool": {
          "must": [
            {
              "range": {                     <-------
                "date": {
                  "gte": "2020-03-01",
                  "format": "yyyy-MM-dd"
                }
              }
            },
            {
              "multi_match": {
                ...
              }
            }
          ]
        }
      }
    }
  }
}