Elasticsearch 结果排序顺序

Question

我想按特定顺序获取结果，首先获取确切的短语 (match_phrase) 匹配，然后匹配短语中的任何单词 (match)，例如，如果我正在搜索“我在哪里可以找到我的帐户”我将首先获取包含完整短语“where can I find my account”的文档，然后获取包含一个或多个单词“where”、“can”、“find”、“my”、“account”的文档

我的查询：

GET my_index/_search

{

"query": {

"bool": {
  "should": [
    {
      "match": {"body": "right usage of Localization"      }
    } ,
    {
      "match": {"title": "right usage of Localization"      }
    } 
    ],
    "should": [
    {
      "match_phrase": {"body": "translated"      }
    },
    {
      "match_phrase": {"title": "translated"      }
    } 
    ]
  }

} }

Answer 1

您可以使用boost query 来提升匹配您的 match_phrase 查询的文档。 您可以相应地更改 boost 参数。

以下查询应该适合您

POST phrase_index/_search
{
  "query": {
    "bool": {
      "should": [
        {
          "bool": {
            "should": [
              {
                "match": {
                  "title": "this is where it should work first"
                }
              },
              {
                "match": {
                  "body": "this is where it should work first"
                }
              }
            ]
          }
        },
        {
          "bool": {
            "should": [
              {
                "match_phrase": {
                  "title": {
                    "query": "this is where it should work first",
                    "boost": 20
                  }
                }
              },
              {
                "match_phrase": {
                  "body": {
                    "query": "this is where it should work first",
                    "boost": 20
                  }
                }
              }
            ]
          }
        }
      ]
    }
  }
}