如何在elasticsearch中搜索数组的多个字段

Question

我有一个名为professor弹性搜索索引

• 如果对于交叉领域，我需要“AND”条件

• 对于相同的字段数组，我需要 OR 条件

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

   和

2. 我需要搜索type是Permanent或GUEST条件，这是字段数组（OR）语句

   和

3. 我需要搜索Location is 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'}]

查询在下面，第 3 个得到它，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

过滤器子句（查询）必须出现在匹配的文档中。 然而，与 must 不同的是，查询的分数将被忽略。 过滤器子句在过滤器上下文中执行，这意味着忽略评分并考虑缓存子句。

请阅读有关bool 查询的Elasticsearch 文档，以详细了解它。

添加带有索引数据（与所讨论的相同）、搜索查询和搜索结果的工作示例

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：

您甚至可以使用terms 查询，该查询返回在提供的字段中包含一个或多个确切术语的文档。terms 查询与term 查询相同，只是您可以搜索多个值。

{
  "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"
          }
        }
      ]
    }
  }
}