ES索引操作
1、创建测试索引
PUT /test_index
{
  "mappings": {
    "test_type":{
      "properties": {
        "code":{
          "type": "keyword"
        },
        "name":{
          "type": "text",
          "analyzer": "ik"
        },
        "count":{
          "type": "integer"
        }
      }
    }
  },
  "settings": {
    "number_of_shards": 5,
    "number_of_replicas": 1,
    "max_result_window":10000,
    "analysis": {
      "analyzer": {
        "ik":{
          "tokenizer":"ik_max_word",
          "stopwords":["的","是"]
        }
      }
    }
  }
}
2、插入数据
PUT test_index/test_type/1  #4代表索引记录的唯一标识,类似数据库表中主键
{
  "code":"001",
  "name":"万科企业股份有限公司"
}
PUT test_index/test_type/2
{
  "code":"002",
  "name":"万达集团股份有限公司"
}
PUT test_index/test_type/3
{
  "code":"003",
  "name":"阿里巴巴(中国)有限公司"
}
PUT test_index/test_type/4
{
  "code":"004",
  "name":"中国平安"
}
3、删除数据
DELETE test_index/test_type/4 #4代表索引记录的唯一标识,类似数据库表中主键
4、更新数据
回复删除的4数据
PUT test_index/test_type/4
{
"code":"004",
"name":"中国平安"
}
①覆盖更新
PUT test_index/test_type/4
{
  "name":"中国平安"
}
②更新字段值
POST test_index/test_type/4/_update
{
  "doc": {
    "name":"中国平安保险(集团)股份有限公司"
  }
} 
5、查询数据
在kibana中默认只显示10条记录
①查询所有
方式1:
GET test_index/test_type/_search
方式2:
GET test_index/test_type/_search
{
  "query":{
    "match_all": {}
  }
}
②根据指定分词字段查询
name:为索引中的中文分词字段
GET test_index/test_type/_search
{
  "query":{
    "match": {
      "name": "中国"
    }
  }
}
③、根据指定不分词字段查询
GET test_index/test_type/_search
{
  "query":{
    "term": {
    "code": "004"
    }
  }
}
④、根据文档id查询
查询描述:pXrY0GsBN9ZpEwHZ14it:文档id
方式1:GET 索引/类型/文档id
GET test_index/test_type/4
方式2:_id文档唯一的id
GET test_index/test_type/_search
{
  "query":{
    "match": {
      "_id": "4"
    }
  }
}
⑤多条件查询
多条件and关系:
#逻辑:and关系 GET test_index/test_type/_search { "query": { "bool": { "must": [ {"match": { "question": "淘宝"}}, {"match": { "question": "软件"}} ] } } }
GET test_index/test_type/_search
{
  "query":{
    "bool": {
      "must": [
        {
          "match": {
          "name":"中国平安保险(集团)股份有限公司"
          }
        }, 
        {
          "term": {
          "code": "004"
          }
        }
      ]
    }
  }
}
多条件or关系:
GET test_index/test_type/_search
{
  "query":{
    "bool": {
      "should": [
        {
          "match": {
          "name":"中国平安保险(集团)股份有限公司"
          }
        }, 
        {
          "term": {
          "code": "004"
          }
        }
      ]
    }
  }
}
多条件and和or关系混合使用:
GET test_index/test_type/_search
{
    "query":{
        "bool": {
            "should": [
                {
                    "match": {
                      "name":"中国平安保险(集团)股份有限公司"
                    }
                }, 
                {
                    "term": {
                      "code": "004"
                    }
                }
            ],
            "must": [
                {
                    "match": {
                        "count": 2
                    }
                }
            ]
        }
    }
}
自定义排序:
GET test_index/test_type/_search
{
	  "query": {
		    "bool": {
		            "must" : [
                    {
                        "match" : {
                            "name" : {
                                "query" : "中国平安"
                            }
                        }
                    }
              ],
			    "adjust_pure_negative": true,
			    "boost": 1.0
		    }
	  },
	  "_source": {
		    "includes": ["code", "name"],
		    "excludes": []
	  },
	  "sort": [{
		    "count": {
			      "order": "desc"
		    }
	  }]
}
⑥指定查询条数
GET test_index/test_type/_search { "query": { "match": { "question": "淘宝" } }, "from": 1, #指定位移 "size": 5 #指定查询条数 }
⑦指定查询返回的字段
GET test_index/test_type/_search { "_source": ["question","nlp"], #返回字段数组 "query": { "match": { "question": "淘宝" } } }
⑧控制加载的字段
GET test_index/test_type/_search { "_source": {"includes": ["question","nlp"],"excludes": ["isSatisfied"]}, "query": { "match": { "question": "淘宝" } } }
⑨通配符
GET test_index/test_type/_search { "_source": {"includes": ["quest*"],"excludes": ["*Date"]}, "query": { "match": { "question": "淘宝" } } }
排序
GET test_index/test_type/_search { "sort": [ { "askTimes": { "order": "desc" } } ], "query": { "match_all": {} } }
前缀匹配
GET test_index/test_type/_search { "query": { "match_phrase_prefix": { "question": "万科" } } }
返回查询
GET test_index/test_type/_search { "query": { "range": { "askTimes": { "gte": 10, # "lte": 20 } } } }
wildcard查询
*代表0个或多个字符
?代表任意一个字符
GET test_index/test_type/_search { "query": { "wildcard": { "question": "万科*" } } }
模糊查询
GET test_index/test_type/_search { "query": { "fuzzy": {"question": "万科"} } }
高亮搜索结果
注:在Kibana中没有看到效果
GET test_index/test_type/_search { "query": { "match": { "question": "淘宝" } }, "highlight": { "fields": {"question":{}} } }
过滤查询
GET test_index/test_type/_search { "post_filter": { "term": { "askTimes": 10 } } }
过滤非空
GET test_index/test_type/_search { "query": { "bool": { "filter": { "exists": { "field": "nlp" } } } } }
聚合查询
sum,min,max,avg,cardinality:求基数,terms:分组
GET /test_index/test_type/_search { "size": 0, "aggs": { "askTimes_of_max": { #自定义名称 "max": { #最大值 "field": "askTimes" } } } }
符合查询:待整理
7、检查noop更新
默认情况下,不更改任何内容的更新会返回“result”:“noop”;
可以通过设置“detect_noop”来禁用此行为:false
PUT test_index/test_type/4
{
    "code":"004",
    "name":"中国平安保险(集团)股份有限公司",
    "count":2,
    "tags":["aa","bb"]
}
POST test_index/test_type/4/_update
{
    "doc": {
        "name":"中国平安保险(集团)股份有限公司"
    },
    "detect_noop":false
}
POST test_index/test_type/5
{
      "script" : {
            "source": "ctx._source.count += params.count",
            "lang": "painless",
            "params" : {
                  "count" : 4
            }
      },
      "upsert" : {
            "count" : 1
      }
}
如果无论文档是否存在您都希望脚本运行,即脚本处理初始化文档而不是upsert元素,设置scripted_upsert为true:
POST test_index/test_type/5
{
      "scripted_upsert":true,
      "script" : {
            "source": "ctx._source.count += params.count",
            "lang": "painless",
            "params" : {
                  "count" : 4
            }
      },
      "upsert" : {
            "count" : 1
      }
}
同scripted_upsert,如果无论文档是否存在都希望脚本运行,即脚本处理初始化文档而不是upsert元素,设置doc_as_upsert为true(文档5不存在):
POST test_index/test_type/5/_update
{
    "doc":{
        "count":12
    },
    "doc_as_upsert":true,
    "upsert":{
        "count":16
    }
}
查询结果:GET test_index/test_type/5
{
    "_index": "test_index",
    "_type": "test_type",
    "_id": "5",
    "_version": 11,
    "found": true,
    "_source": {
        "count": 12
    }
}
9、其他
①、统计索引文档数量
描述:GET 索引/类型/_count
GET test_index/test_type/_count
②检测分词效果
POST test_index/_analyze
{
  "analyzer": "ik_max_word",
  "text": "我是中国人"
}
通过url方式检索数据:
官方文档:
https://www.elastic.co/guide/en/elasticsearch/reference/6.3/search-search.html
 
                    
                     
                    
                 
                    
                
 
                
            
         
         浙公网安备 33010602011771号
浙公网安备 33010602011771号