python - Elasticsearch构建动态查询-Python

Question

关于elasticsearch-py API的新手问题。我建立了名称，地址，电话号码等记录的索引，并且可以使用python客户端进行查询
例如。

`elasticsearch.search(index = "index_name", q= 'first_name:"JOHN"')` 

并得到适当的结果
但是，我想将查询作为字符串参数

first_name = "JOHN"
qu = "first_name:".join(first_name)
elasticsearch.search(index = 'index_name', q = qu)

并且查询失败。有没有更好的方法来进行此类动态查询？

Answer 1

我通常将搜索查询构建为请求正文搜索。
https://www.elastic.co/guide/en/elasticsearch/reference/current/search-request-body.html

下面的例子:

searchdata = essearch.search(index=indexname, body= {
    "query": {
        "filtered": {
          "query": {
            "query_string": {
              "query": "name:fred"
            }
          },
          "filter": {
            "bool": {
              "must": [

                {
                  "exists": {
                    "field": "fieldname"
                  }
                },
                {
                  "exists": {
                    "field": "secondfieldname"
                  }
                }

              ]
            }
          }
        }
      },
      "size": 5000,
      "sort": [
         {
            "loggeddate": {
               "order": "desc"
            }
         }
      ]
    }
           )