查询示例一

数据准备

DELETE /clayindex
PUT /clayindex
{
   "mappings": {
     "properties": {
     "name":{
       "type": "keyword"
     },
     "address":{
        "type": "text"
     },
     "age":{
        "type": "integer"
     }
     }
   }
}
#插入数据 可以自己生成id //  
POST  /clayindex/_doc
{
   "name":"曹操",
   "address":"魏国",
   "age":18
  
}
POST  /clayindex/_doc
{
   "name":"贾诩",
   "address":"魏国",
   "age":19
  
}
POST  /clayindex/_doc
{
   "name":"诸葛亮",
   "address":"蜀国",
   "age":37
  
}
POST  /clayindex/_doc
{
   "name":"关羽",
   "address":"蜀国",
   "age":35
  
}
POST  /clayindex/_doc
{
   "name":"周瑜",
   "address":["吴国","蜀国"],
   "age":25
}

1、获取所有文档

GET /clayindex/_doc/_search
{
  "query": {
    "match_all":{
    }
  }
}

2、分页查询，从第二条开始，查两条

GET /clayindex/_doc/_search
{
  "query": {
    "match_all": {}
  },
  "from": 1,
  "size": 2
}

这种分页方式如果进行深度分页，比如到100页，每页十条数据，它会从每个分片都查询出100*10条数据，假设有五个分片，就是5000条数据，然后在内存中进行排序，然后返回拍过序之后的集合中的第1000-1010条数据

3、指定查询出来的数据返回的字段

GET /clayindex/_doc/_search
{
  "query": {
    "match_all": {}
  },
  "_source": ["name","age"]
}

返回的数据中返回name和tages字段。

4、address字段中包含魏

GET /clayindex/_doc/_search
{
  "query": {
    "match": {
      "address": "魏"
    }
  }
}

返回的结果中元字段_score有评分，说明使用query会计算评分

5、address字段中包含魏，并按照年龄升序排列

GET /clayindex/_doc/_search
{
  "query": {
    "match": {
      "address": "魏"
    }
  },
  "sort": [
    {
      "age": {
        "order": "asc"
      }
    }
  ]
}

6、年龄字段大于30

GET /clayindex/_doc/_search
{
  "query": {
    "bool": {
      "filter": {
        "range": {
          "age": {
            "gte": 30
          }
        }
      }
    }
  }
}

返回的结果中元字段_score字段等于0，没评分，说明使用filter不会计算评分

7、 address字段中包含魏，并且年龄字段大于10

GET /clayindex/_doc/_search
{
  "query": {
    "bool": {
      "must": [
        {
          "match": {
            "address": "魏"
          }
        }
      ], 
      "filter": {
        "range": {
          "age": {
            "gte": 10
          }
        }
      }
    }
  }
}

8、查询address字段包含魏的文档的数量

GET /clayindex/_doc/_count
{
  "query": {
    "match": {
      "address": "魏"
    }
  }
}

9、排序

GET clayindex/_doc/_search
{
  "query":{
     
     "match": {
       "address": "魏国"
     }
  },
  "_source":["name"],
  "sort":[
    {"age":{"order":"desc"}},
    {"name":{"order":"asc"}}
    ]
}

10、分页查询

GET clayindex/_doc/_search
{
  "query":{
     
     "match": {
       "address": "魏国"
     }
  },
  "_source":["name"],
  "sort":[
    {"age":{"order":"desc"}},
    {"name":{"order":"asc"}}
    ],
   "from":0,
   "size":10
}

11、布尔值查询

GET clayindex/_doc/_search
{
  "query":{
      "bool": {
        "must": [
          {
     "match": {
       "address": "魏国"
     }
            
          },{
            "match": {
       "name": "曹操"
     }
            
          }
        ]
        
      }
  },
  "_source":["name"],
  "sort":[
    {"age":{"order":"desc"}},
    {"name":{"order":"asc"}}
    ],
   "from":0,
   "size":2
}

12、条件1 or 条件2

GET clayindex/_doc/_search
{
  "query":{
      "bool": {
        "should": [
          {
     "match": {
       "address": "魏国"
     }
            
          },{
            "match": {
       "name": "曹操"
     }
            
          }
        ]
        
      }
  },
  "_source":["name"],
  "sort":[
    {"age":{"order":"desc"}},
    {"name":{"order":"asc"}}
    ],
   "from":0,
   "size":10
}

13、排除 MUST_NOT

#查询名字不是曹操的信息
GET clayindex/_doc/_search
{
  "query":{
     
    "bool": {
      "must_not": [
        {
           "match": {
       "name": "曹操"
        
     }
        }
      ]
    }
    
  }
}

14、数据过滤FILTER

gt   大于

gte  大于等于

lt  小于

lte  小于等于！

# 查询名字是曹操，然后年龄大于等于10 小于等于30

GET clayindex/_doc/_search
{
  "query":{
     
    "bool": {
      "must": [
        {
           "match": {
       "name": "曹操"
        
     }
        }
      ],
      "filter": {
        "range": {
          "age": {
            "gte": 10,
            "lte": 20
          }
        }
      }
    }
    
  }
}

15、配备多个条件查询

GET clayindex/_doc/_search
{
  
  "query":{
    "match":{"address":"吴国 魏国 "}
    
  }
}

16、高亮查询

GET clayindex/_doc/_search
{
  "query":{
  "match": {
    "name": "曹操"
  }
  },
  "highlight":{
    
    "fields": {
      "name": {}
    }
  }
}

GET clayindex/_doc/_search
{
  "query":{
  "match": {
    "address": "魏国"
  }
  },
  "highlight":{
    "fields": {
      "address": {}
    }
  }
}

17、自定义高亮的风格

GET clayindex/_doc/_search
{
  "query":{
  "match": {
    "name": "曹操"
    
  }
  },
  "highlight":{
    
    "pre_tags": "<p class='gaoliang'>", 
    "post_tags": "</p>", 
    "fields": {
      "name": {}
    }
  }
}

18、多个条件多个字段高亮查询

GET clayindex/_doc/_search
{
  "query":{
   "bool": {
        "must": [
          {
     "match": {
       "address": "魏国"
     }
          },{
            "match": {
       "name": "曹操"
     }  
          }
        ]
        
      }
  },
  "highlight":{
    
    "pre_tags": "<p class='gaoliang'>", 
    "post_tags": "</p>", 
    "fields": [
      {"name": {}},
       {"address": {}}
   ]
  }
}

gt   大于

2

gte  大于等于

3

lt  小于

4

lte  小于等于！

5

# 查询名字是曹操，然后年龄大于等于10 小于等于30