2-Elasticsearch基础入门-查询排序explain

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Elasticsearch认证复习准备

https://www.elastic.co/guide/cn/elasticsearch/guide/current/getting-started.html

 

##验证查询（explain 查询）

GET megacorp/_validate/query?explain

{

   "query": {

      "match" : {

         "tweet" : "really powerful"

      }

   }

}

 

##查询

GET /website/blog/_search

{

    "query": {

        "match": {

            "title": "second"

        }

    }

}

 

##组合查询

GET /website/blog/_search

{

  "query": {

    "bool": {

      "must": {

        "match": {

          "title": "second"

        }

      },

      "must_not": {

        "match": {

          "name": "mary"

        }

      },

      "should": {

        "match": {

          "title": "full text"

        }

      },

      "filter": {

        "range": {

          "age": {

            "gt": 30

          }

        }

      }

    }

  }

}

 

 

 

##term查询、terms（精确查询）

GET /website/blog/_search

{

  "query": {

    "term": {

      "age": 10

    }

  }

}

GET /website/blog/_search

{

  "query": {

    "terms": {"age": [ 10,100 ]}

  }

}

 

 

 

 

##exists、missing查询（类似于sql中的字段值为NULL或者IS not NULL）

GET /website/blog/_search

{

  "query": {

 "bool": {

            "must_not": {

                "exists": {

                    "field": "age"

                }

            }

        }

  }

}

 

GET /website/blog/_search

{

  "query": {

    "exists":   {

        "field":    "title"

    }

  }

}

 

 

##排序

GET /megacorp/employee/_search

{

  "query": {

    "bool": {

      "filter": {

        "term": {

          "about": "rock"

        }

      }

    }

  },

  "sort": {

    "age": {

      "order": "desc"

    }

  }

}

 

##多字段排序（多级排序）

GET /megacorp/employee/_search

{

  "query": {

    "match": {

      "about": "rock"

    }

  },

  "sort": [

    {

      "_score": {

        "order": "desc"

      }

    },

    {

      "age": {

        "order": "asc"

      }

    }

  ]

}

 

 

 

一起来玩Elasticsearch，加我微信：wx1250134974