elasticsearch笔记

• • 索引
  • • 创建索引
    • 检索索引
    • 基本搜索
    • DSL搜索

PUT /index/type/1
{
    "first_name" : "John",
    "last_name" :  "Smith",
    "age" :        25,
    "about" :      "I love to go rock climbing",
    "interests": [ "sports", "music" ]
}

GET index/type/1
{
	  "_index" :   "megacorp", //索引
	  "_type" :    "employee", //索引type
	  "_id" :      "1", //索引id
	  "_version" : 1,   //修改次数
	  "found" :    true, //是否找到
	  "_source" :  {   //内容
		  "first_name" :  "John",
		  "last_name" :   "Smith",
		  "age" :         25,
		  "about" :       "I love to go rock climbing",
		  "interests":  [ "sports", "music" ]
	  }
}

GET index/type/_search  全文搜索
GET index/type/_search?q=last_name:Smith  query_string 字符串搜索
{
    "took": 1,
    "timed_out": false,
    "_shards": {
        "total": 2,
        "successful": 2,
        "failed": 0
    },
    "hits": {
        "total": 1,
        "max_score": 1.0,
        "hits": [
            {
                "_index": "test_database",
                "_type": "test_table1",
                "_id": "_search",
                "_score": 1.0,
                "_source": {
                    "first_name": "John",
                    "last_name": "Smith",
                    "age": 25,
                    "about": "I love to go rock climbing",
                    "interests": [
                        "sports",
                        "music"
                    ]
                }
            }
        ]
    }
}

  	GET /megacorp/employee/_search  
  	{
  	  "query" : {
  	      "match" : {
  	          "last_name" : "Smith"
  	      }
  	  	}
  	}

	GET /megacorp/employee/_search 
    {
      "query" : {
          "bool": {
              "must": {
                  "match" : {
                      "last_name" : "smith" 
                  }
              },
              "filter": {
                  "range" : {
                      "age" : { "gt" : 30 } 
                  }
              }
          }
      }
  }

GET /megacorp/employee/_search  完全匹配搜索的短语
{
    "query" : {
        "match_phrase" : {
            "about" : "rock climbing"
        }
    }
}

  {
    "aggs": {
  	    "all_interests": {
  	      "terms": { "field": "interests" }
      	}
    }
  }
  {
 ...
    "hits": { ... },
     "aggregations": {
        "all_interests": {
           "buckets": [
              {
                 "key":       "music",
                 "doc_count": 2
              },
              {
                 "key":       "forestry",
                 "doc_count": 1
              },
              {
                 "key":       "sports",
                 "doc_count": 1
              }
           ]
        }
     }
  }