GET _search
{
  "query": {
    "match_all": {}
  }
}
# 默认的分词
GET _analyze
{
  "text": "共和国国歌"
}
# ik插件的 ik_smart
GET _analyze 
{ 
 "analyzer":"ik_smart", 
 "text":"中华人民共和国中央人民政府万岁"
}
# ik插件的 ik_max_word 分词
GET _analyze 
{ 
 "analyzer":"ik_max_word", 
 "text":"中华人民共和国中央人民政府万岁"
}
# 删除索引
DELETE school
# 创建索引 number_of_shards 指定分片，number_of_replicas指定副本书
PUT school
{
  "settings":{
    "number_of_shards": 1,
    "number_of_replicas": 1	
  },
  "mappings":{
    "student":{
      "properties":{
        "name":{
          "type":"text"
        },
        "address":{
          "type":"keyword"
        },
        "age":{
          "type":"integer"
        },
        "date":{
          "type":"date",
          "format":"yyyy-MM-dd HH:mm:ss|| yyy-MM-dd||epoch_millis"
        }
      }
    }
  }
} 
# 插入数据不指定ID，指定ID为1
PUT /school/student/1
{
  "name":"杨旭",
  "address":"山东烟台",
  "age":23,
  "date":"1995-04-12"
}
# 插入数据不指定ID，系统默认设置ID
POST /school/student/
{
  "name":"张小花",
  "address":"山东烟台",
  "age":24,
  "date":"1996-07-24"
}
# 查询id为1 的学生信息
GET /school/student/1

GET /school/student/1?_source
# 查询id为1 的学生的都地址
GET /school/student/1?_source=address
# 查询id为1 的学生名字和地址
GET /school/student/1?_source=name,address
# 查询所有数据
GET /school/_search/
{
  "query": {
    "match_all": {
      
    }
  }
}
# SQL 查询
POST /_xpack/sql?format=txt
{
  "query":"select * from school where 1=1 " 
}

# SQL 查询
POST /_xpack/sql?format=txt
{
  "query":"select * from school where 1=1 and age = 23 " 
}