//全量修改
PUT /employee/_doc/1
{
  "name":"丐2姐",
  "age":30
}

DELETE /employee

PUT /employee
{
  "settings": {
    "number_of_shards": 1
    , "number_of_replicas": 1
  }
}

GET /employee/_doc/1

// 指定字段修改
POST /employee/_update/1
{
  "doc": {
    "name":"丐姐4"
  }
}
 
//强制指定创建，若已经存在，则失败
POST /employee/_create/7
{
  "name":"兄滴滴",
  "age":25
}

//删除某个文档
DELETE /employee/_doc/2

//查询全部文档
GET /employee/_search
//查询全部文档
GET /employee/_search

//使用结构化的方式创建索引
PUT /employee
{
  "settings": {
    "number_of_shards": 1,
     "number_of_replicas": 1
  },
  "mappings": {
    "properties": {
      "name":{"type": "text"},
      "age":{"type": "integer"}
    }
  }
}

//不带条件的查询
GET /employee/_search
{
  "query":{
    "match_all": {}
  }
}

//分页查询
GET /employee/_search
{
  "query":{
    "match_all": {}
  },
  "from": 0,
  "size": 2
}
//带关键字条件查询
GET /employee/_search
{
  "query": {
    "match": {
      "name": "兄"
    }
  }
}
//带排序的查询
GET /employee/_search
{
  "query": {
    "match": {
      "name": "兄"
    }
  },
  "sort": [
    {
      "age": {
        "order": "asc"
      }
    }
  ]
}
//带filter
/**
 * match 和 term的区别是match会分词，每个分割后的结果*跟索引中的文档分词后的结果作比较，
   *而term不会进行分词，类似sql中的like
   filter的作用是没有_score打分的跟where 类似
*/
GET /employee/_search
{
  "query": {
    "bool": {
      "filter": {
        "term": {
          "age": "30"
        }
      }
    }
  }
}

//带聚合的查询
GET /employee/_search
{
  "query": {
    "match": {
      "name": "兄"
    }
  },
  "sort": [
    {
      "age": {
        "order": "asc"
      }
    }
  ],
  "aggs": {
    "group_by_age": {
      "terms": {
        "field": "age"
      }
    }
  }
}