如何在elasticsearch中搜索数组的多个字段

Question

我在弹性搜索中有一个名为 professor

的索引

如果对于交叉字段我需要“AND”条件
对于相同的字段数组，我需要 OR 条件

我需要搜索 subject 即 Physics 或 Accounting 这是字段数组 (OR) 语句

和
我需要搜索 type 是 Permanent 或 GUEST 条件这是字段数组 (OR) 语句

和
我要搜索Location是NY(&)条件

test = [{'id':1,'name': 'A','subject': ['Maths','Accounting'],'type':'Contract', 'Location':'NY'},
      { 'id':2,'name': 'AB','subject': ['Physics','Engineering'],'type':'Permanent','Location':'NY'},
    {'id':3,'name': 'ABC','subject': ['Maths','Engineering'],'type':'Permanent','Location':'NY'},
{'id':4,'name':'ABCD','subject': ['Physics','Engineering'],'type':['Contract','Guest'],'Location':'NY'}]

查询如下，第3个知道了，如何添加1 and 2

content_search = es.search(index="professor", body={
    "query": {
    "bool": {
      "must": {
        "match_all": {}
      },
      "filter": [
        {
          "term": {
            "Location.keyword": "NY"
          }
        }
      ]
    }
  }
})
content_search ['hits']['hits']

预期的是id [{ 'id':2,'name': 'AB','subject': ['Physics','Engineering'],'type':'Permanent','Location':'NY'},{'id':4,'name':'ABCD','subject': ['Physics','Engineering'],'type':['Contract','Guest'],'Location':'NY'}]

Answer 1

The filter clause (query) must appear in matching documents. However unlike must the score of the query will be ignored. Filter clauses are executed in filter context, meaning that scoring is ignored and clauses are considered for caching.

请阅读 bool queries 上的 Elasticsearch 文档，以详细了解它。

添加一个工作示例，其中包含索引数据（与所讨论的相同）、搜索查询和搜索结果

搜索查询：

{
  "query": {
    "bool": {
      "must": {
        "match": {
          "Location.keyword": "NY"
        }
      },
      "filter": [
        {
          "bool": {
            "should": [
              {
                "match": {
                  "subject.keyword": "Accounting"
                }
              },
              {
                "match": {
                  "subject.keyword": "Physics"
                }
              }
            ]
          }
        },
        {
          "bool": {
            "should": [
              {
                "match": {
                   "type.keyword": "Permanent"
                }
              },
              {
                "match": {
                  "type.keyword": "Guest"
                }
              }
            ]
          }
        }
      ]
    }
  }
}

搜索结果：

"hits": [
      {
        "_index": "stof_64370980",
        "_type": "_doc",
        "_id": "2",
        "_score": 0.10536051,
        "_source": {
          "id": 2,
          "name": "AB",
          "subject": [
            "Physics",
            "Engineering"
          ],
          "type": "Permanent",
          "Location": "NY"
        }
      },
      {
        "_index": "stof_64370980",
        "_type": "_doc",
        "_id": "4",
        "_score": 0.10536051,
        "_source": {
          "id": 4,
          "name": "ABCD",
          "subject": [
            "Physics",
            "Engineering"
          ],
          "type": [
            "Contract",
            "Guest"
          ],
          "Location": "NY"
        }
      }
    ]

另一个搜索查询：

You can even use terms query that returns documents that contain one or more exact terms in a provided field.The terms query is the same as the term query, except you can search for multiple values.

{
  "query": {
    "bool": {
      "must": [
        {
          "terms": {
            "subject.keyword": [
              "Physics",
              "Accounting"
            ]
          }
        },
        {
          "terms": {
            "type.keyword": [
              "Guest",
              "Permanent"
            ]
          }
        },
        {
          "match": {
            "Location.keyword": "NY"
          }
        }
      ]
    }
  }
}

更新 1：

{
  "query": {
    "bool": {
      "must": [
        {
          "terms": {
            "subject.keyword": [
              "Physics",
              "Accounting"
            ]
          }
        },
        {
          "terms": {
            "type.keyword": [
              "Guest",
              "Permanent"
            ]
          }
        },
        {
          "match": {
            "Location.keyword": "NY"
          }
        },
        {
          "query_string": {
            "query": "ABCD"
          }
        }
      ]
    }
  }
}

如何在elasticsearch中搜索数组的多个字段

How to search on multiple fields of array in elasticsearch

dsl

elasticsearch