elasticsearch - 需要帮助在Elasticsearch中将通配符搜索与范围查询结合起来吗？

Question

我正在尝试在 flex 搜索查询中将通配符与日期范围结合在一起，但没有根据通配符搜索给出响应。它返回的响应包含日期范围不正确的项目。

{
  "from": 0,
  "size": 10,
  "query": {
    "bool": {
      "must": [
        {
          "bool": {
            "should": [
              {
                "wildcard": {
                  "hostName": "*abc*"
                }
              },
              {
                "range": {
                  "requestDate": {
                    "gte": "2019-10-01T08:00:00.000Z"
                  }
                }
              }
            ]
          }
        }
      ]
    }
  }
}

索引映射如下所示:

{
  "index_history": {
    "mappings": {
      "applications_datalake": {
        "properties": {
          "query": {
            "properties": {
              "term": {
                "properties": {
                  "server": {
                    "type": "text",
                    "fields": {
                      "keyword": {
                        "type": "keyword",
                        "ignore_above": 256
                      }
                    }
                  }
                }
              }
            }
          }
        }
      },
      "index-data-type": {
        "properties": {
          "attributes": {
            "properties": {
              "wwnListForServer": {
                "type": "text",
                "fields": {
                  "keyword": {
                    "type": "keyword",
                    "ignore_above": 256
                  }
                }
              }
            }
          },
          "hostName": {
            "type": "keyword"
          },
          "requestDate": {
            "type": "date"
          },
          "requestedBy": {
            "properties": {
              "id": {
                "type": "keyword"
              },
              "name": {
                "type": "keyword"
              }
            }
          }
        }
      }
    }
  }
}

Answer 1

您错过了minimum_should_match参数，
看一下这个 :
https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-bool-query.html。
我认为您的查询应如下所示:

{
  "from": 0,
  "size": 10,
  "query": {
    "bool": {
      "must": [
        {
          "bool": {
            "should": [
              {
                "wildcard": {
                  "hostName": "*abc*"
                }
              },
              {
                "range": {
                  "requestDate": {
                    "gte": "2019-10-01T08:00:00.000Z"
                  }
                }
              }
            ],
            "minimum_should_match" : 2
          }
        }
      ]
    }
  }
}

从文档中:

You can use the minimum_should_match parameter to specify the number or percentage of should clauses returned documents must match.

If the bool query includes at least one should clause and no must or filter clauses, the default value is 1. Otherwise, the default value is 0.