elasticsearch - 过滤查询错误

Question

GET dspdocs/_search
{
 "query": {
  "filtered": {
    "filter": {
      "bool": {
        "must": ["must_term1", "must_term2"],
        "must_not": ["must_not_term", "must_not_term2"]
        }
      },
    "query": {
      "match": {
        "text": {
          "query": "query_term",
          "operator": "or"
        }
      }
    }
  }
}
}

我正在尝试执行上述查询，但出现以下错误:

"type": "query_parsing_exception",
"reason": "[_na] query malformed, must start with start_object",

我知道这意味着我的查询未正确编写，或者我在某个地方搞砸了一些命令，但是为了我的生命，我似乎无法弄清楚哪里出了问题。

我基本上是想过滤掉所有不包含must条款和must_not条款的文档。然后，我在过滤后的集中搜索所有包含query_term的文档。

(我首先进行过滤以稍微提高搜索速度)

Answer 1

您的问题在示例中:

...
  "bool": {
    "must": ["must_term1", "must_term2"],
    "must_not": ["must_not_term", "must_not_term2"]
    }
  },
...

must和must_not的数组(以及该问题的should和filter)期望单个对象或对象数组。例如:

"bool": {
  "must": [
    {
      "term" : {
        "my_field" : "must_term1"
      }
    },
    {
      "term" : {
        "my_field" : "must_term2"
      }
    }
  ],
  "must_not": [
    {
      "term" : {
        "my_field" : "must_not_term"
      }
    },
    {
      "term" : {
        "my_field" : "must_not_term2"
      }
    }
  ]
}

请注意，我正在使用term查询，但是您可以自由使用任何类型的查询。在Elasticsearch 2.x +中，您应该将其编写为纯bool查询，而不是filtered查询:

{
  "query": {
    "bool": {
      "must": [
        {
          "query_string" : {
            "query" : "query_term"
          }
        }
      ],
      "must_not": [
        {
          "term" : {
            "my_field" : "must_not_term"
          }
        },
        {
          "term" : {
            "my_field" : "must_not_term2"
          }
        }
      ],
      "filter": [
        {
          "term" : {
            "my_field" : "must_term1"
          }
        },
        {
          "term" : {
            "my_field" : "must_term2"
          }
        }
      ]
    }
  }
}