ElasticSearch入门3: 高级查询

尊重原创：https://www.cnblogs.com/liuxiaoming123/p/8124969.html

单字段 模糊匹配查询与精准查询

postman请求

POST     127.0.0.1:9200/book/_search

请求json：

{
   "query":{
           "match":{
               "name":"晓明9"
           }
   }
}

注：match 模糊查询的标识 ：查询内容自动拆分成分词来查询　　若match 改为 match_phrase ：精准查询  具体可以查看 http://www.cnblogs.com/liuxiaoming123/p/8119217.html　　

响应结果：

{
    "took": 51,
    "timed_out": false,
    "_shards": {
        "total": 5,
        "successful": 5,
        "skipped": 0,
        "failed": 0
    },
    "hits": {
        "total": 4,
        "max_score": 0.5753642,
        "hits": [
            {
                "_index": "book",
                "_type": "novel",
                "_id": "1",
                "_score": 0.5753642,
                "_source": {
                    "name": "晓明1",
                    "country": "china1",
                    "age": 26,
                    "date": "1992-08-08"
                }
            },
            {
                "_index": "book",
                "_type": "novel",
                "_id": "5",
                "_score": 0.28363907,
                "_source": {
                    "name": "晓明",
                    "country": "china",
                    "age": 26,
                    "date": "1992-08-08"
                }
            },
            {
                "_index": "book",
                "_type": "novel",
                "_id": "8",
                "_score": 0.28363907,
                "_source": {
                    "name": "晓明",
                    "country": "china",
                    "age": 26,
                    "date": "1992-08-08"
                }
            },
            {
                "_index": "book",
                "_type": "novel",
                "_id": "9",
                "_score": 0.23911436,
                "_source": {
                    "name": "晓明9",
                    "country": "china9",
                    "age": 26,
                    "date": "1992-08-08"
                }
            }
        ]
    }
}

多字段 模糊匹配查询与精准查询

postman请求URL：

POST  127.0.0.1:9200/book/_search

请求json字符串:

{
   "query":{
           "multi_match":{
               "query":"晓明china",
               "fields":["name","country"]
           }
   }
}

注：multi_match为指定多字段匹配

响应结果：

{    "took": 42,    "timed_out": false,    "_shards": {        "total": 5,        "successful": 5,        "skipped": 0,        "failed": 0    },    "hits": {        "total": 4,        "max_score": 0.5753642,        "hits": [            {                "_index": "book",                "_type": "novel",                "_id": "1",                "_score": 0.5753642,                "_source": {                    "name": "晓明1",                    "country": "china1",                    "age": 26,                    "date": "1992-08-08"                }            },            {                "_index": "book",                "_type": "novel",                "_id": "5",                "_score": 0.47000363,                "_source": {                    "name": "晓明",                    "country": "china",                    "age": 26,                    "date": "1992-08-08"                }            },            {                "_index": "book",                "_type": "novel",                "_id": "8",                "_score": 0.47000363,                "_source": {                    "name": "晓明",                    "country": "china",                    "age": 26,                    "date": "1992-08-08"                }            },            {                "_index": "book",                "_type": "novel",                "_id": "9",                "_score": 0.23911436,                "_source": {                    "name": "晓明9",                    "country": "china9",                    "age": 26,                    "date": "1992-08-08"                }            }        ]    }}

语法查询 未指定字段：

postman请求：

POST 127.0.0.1:9200/book/_search

请求json字符串：

{
   "query":{
           "query_string":{
               "query":"(ElasticSearch AND 入门) OR SpringBoot"
           }
   }
}

返回结果：

{
    "took": 21,
    "timed_out": false,
    "_shards": {
        "total": 5,
        "successful": 5,
        "skipped": 0,
        "failed": 0
    },
    "hits": {
        "total": 2,
        "max_score": 2.634553,
        "hits": [
            {
                "_index": "book",
                "_type": "novel",
                "_id": "9",
                "_score": 2.634553,
                "_source": {
                    "name": "ElasticSearch 入门",
                    "country": "china9",
                    "age": 26,
                    "date": "1992-08-08"
                }
            },
            {
                "_index": "book",
                "_type": "novel",
                "_id": "1",
                "_score": 0.2876821,
                "_source": {
                    "name": "SpringBoot",
                    "country": "china1",
                    "age": 26,
                    "date": "1992-08-08"
                }
            }
        ]
    }
}

语法查询
指定字段：

postman请求：

POST 127.0.0.1:9200/book/_search

请求json字符串：

{
   "query":{
           "query_string":{
               "query":"SpringBoot OR 中国",
               "fields":["name","country"]
           }
   }
}

响应结果：

{
    "took": 11,
    "timed_out": false,
    "_shards": {
        "total": 5,
        "successful": 5,
        "skipped": 0,
        "failed": 0
    },
    "hits": {
        "total": 1,
        "max_score": 0.8630463,
        "hits": [
            {
                "_index": "book",
                "_type": "novel",
                "_id": "1",
                "_score": 0.8630463,
                "_source": {
                    "name": "SpringBoot",
                    "country": "中国",
                    "age": 26,
                    "date": "1992-08-08"
                }
            }
        ]
    }
}

（结构化数据的查询）

指定字段查询：（term）

postman请求：

POST   127.0.0.1:9200/book/_search

请求json字符串：

{
    "query" :
        {
            "term" : {"name" : "springboot"}
        }
}

响应结果：

{
    "took": 4,
    "timed_out": false,
    "_shards": {
        "total": 5,
        "successful": 5,
        "skipped": 0,
        "failed": 0
    },
    "hits": {
        "total": 1,
        "max_score": 0.2876821,
        "hits": [
            {
                "_index": "book",
                "_type": "novel",
                "_id": "1",
                "_score": 0.2876821,
                "_source": {
                    "name": "SpringBoot",
                    "country": "中国",
                    "age": 26,
                    "date": "1992-08-08"
                }
            }
        ]
    }
}

注：若查询英文时应全字母小写精确查询

　　若查询中文时应按单个字来查询

范围查询：

注：json请求字符串中部分字段的含义

　　range：范围关键字

　　gte 大于等于

　　lte 小于等于

　　gt 大于

　　lt 小于

　　now 当前时间

postman请求：

127.0.0.1:9200/book/_search

请求json字符串：

{
    "query" :
        {
            "range" : {
                "date" : {
                        "gte":"2017-01-01",
                        "lte":"now"
                         }
                    }
        }
}

响应结果：

{
    "took": 7,
    "timed_out": false,
    "_shards": {
        "total": 5,
        "successful": 5,
        "skipped": 0,
        "failed": 0
    },
    "hits": {
        "total": 1,
        "max_score": 1,
        "hits": [
            {
                "_index": "book",
                "_type": "novel",
                "_id": "9",
                "_score": 1,
                "_source": {
                    "name": "ElasticSearch 入门",
                    "country": "china9",
                    "age": 28,
                    "date": "2017-08-08"
                }
            }
        ]
    }
}

Filter Context(对数据进行过滤)

postman请求：

POST  127.0.0.1:9200/book/_search

请求json字符串：

{
    "query" : {
            "bool" : {
                "filter" : {
                        "term":{
                        "age":20
                                }
                            }
                        }
              }
}

响应结果：

{
    "took": 24,
    "timed_out": false,
    "_shards": {
        "total": 5,
        "successful": 5,
        "skipped": 0,
        "failed": 0
    },
    "hits": {
        "total": 1,
        "max_score": 0,
        "hits": [
            {
                "_index": "book",
                "_type": "novel",
                "_id": "1",
                "_score": 0,
                "_source": {
                    "name": "SpringBoot",
                    "country": "中国",
                    "age": 20,
                    "date": "1992-08-08"
                }
            }
        ]
    }
}

注： boost 固定响应结果分数的值

postman请求：

POST 127.0.0.1:9200/_search

请求json字符串：

{
    "query" : {
            "constant_score" : {
                "filter" : {
                            "match":{
                                        "name":"晓明"
                                    }
                            },
                            "boost":2
                        }
              }
}

响应结果：

{
    "took": 11,
    "timed_out": false,
    "_shards": {
        "total": 8,
        "successful": 8,
        "skipped": 0,
        "failed": 0
    },
    "hits": {
        "total": 2,
        "max_score": 2,
        "hits": [
            {
                "_index": "book",
                "_type": "novel",
                "_id": "5",
                "_score": 2,
                "_source": {
                    "name": "晓明",
                    "country": "china",
                    "age": 26,
                    "date": "1992-08-08"
                }
            },
            {
                "_index": "book",
                "_type": "novel",
                "_id": "8",
                "_score": 2,
                "_source": {
                    "name": "晓明8",
                    "country": "china",
                    "age": 26,
                    "date": "1992-08-08"
                }
            }
        ]
    }
}

should关键词：或的关系

若should改为must 关键词则表示和的关系

postman请求：

POST 127.0.0.1:9200/_search

请求json字符串：
　　　　1.shuld:
{
    "query" : {
            "bool" : {
                "should" : [
                            {
                                "match":{"name":"springboot"}
                            },
                            {
                                "match":{"country":"中国"}
                            }
                            ]
                        }
              }
}

　2.must:
{
    "query" : {
            "bool" : {
                "must" : [
                            {
                                "match":{"name":"springboot"}
                            },
                            {
                                "match":{"country":"中国"}
                            }
                            ]
                        }
              }
}

3.must filter:
{    "query" : {            "bool" : {                "must" : [                            {                                "match":{"name":"springboot"}                            },                            {                                "match":{"country":"中国"}                            }                            ],                   "filter":[                            {                                "term":{                                    "age":20                                }                            }                                ]                        }              }}

4.must_not:{    "query" : {            "bool" : {                "must_not" : {                                "term":{"age":20}                             }                      }               }}

分类: ElasticSearch

原文地址：https://www.cnblogs.com/xiaohouzai/p/9636439.html

时间： 2024-08-26 13:24:25

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