Elasticsearch:仅返回嵌套的 inner_hits

Question

我有以下查询:

GET /networkcollection/branch_routers/_search/
{
  "query": {
    "nested": {
      "path": "queries",
      "query": {
        "bool": {
          "must": [
            { "match": 
              { "queries.dateQuery": "20160101T200000.000Z" }
            }
          ]
        }
      },
      "inner_hits" : {}
    }
  }
}

这将返回“hits”对象(整个文档)以及“inner_hits”对象(嵌套在 hits 中)。

有没有办法让我只返回出现在“inner_hits”结果中的匹配“queries”元素，而不获取整个文档？

Answer 1

应该可以通过禁用 source-field 来实现它在顶层通过指定 "_source": false

POST /networkcollection/branch_routers/_search/
{
  "_source" : false,
  "query": {
    "nested": {
      "path": "queries",
      "query": {
        "bool": {
          "must": [
            { "match": 
              { "queries.dateQuery": "20160101T200000.000Z" }
            }
          ]
        }
      },
      "inner_hits" : {}
    }
  }
}