elasticsearch - Elasticsearch中的Function_score，multi_match，script_score和filter

Question

我在向嵌入在function_score内的现有多重匹配查询中添加过滤器时遇到问题。

理想情况下，我想按"term" : { "lang" : "en" }进行过滤，只获取英语版本的文档。

我尝试移动订单，尝试将查询包装在bool中，但是无法使过滤器与我正在使用的其他功能一起使用。

我的查询代码:

GET /my_index/_search/
{
  "query": {
    "function_score": {
      "query": {
        "bool": {
          "filter": {
            "term": {
              "lang": "en"
            }
          },
          "multi_match": {
            "query": "Sample Query here",
            "type": "most_fields",
            "fields": [
              "body",
              "title",
              "permalink",
              "name"
            ]
          }
        }
      },
      "script_score": {
        "script": {
          "source": "_score + 10"
        }
      }
    }
  }
}

错误代码:

{
  "error": {
    "root_cause": [
      {
        "type": "parsing_exception",
        "reason": "[bool] query does not support [multi_match]",
        "line": 11,
        "col": 19
      }
    ],
    "type": "parsing_exception",
    "reason": "[bool] query does not support [multi_match]",
    "line": 11,
    "col": 19
  },
  "status": 400
}

我正在使用最新版本的Elasticsearch(我相信是6.2)

Answer 1

尝试将multi_match包装在must子句中，如下所示

"must": {
    "multi_match": ...
}

错误消息很清楚， bool查询仅接受 filter， must， should