elasticsearch 基本CRUD操作

相关文档https://www.elastic.co/guide/en/elasticsearch/reference/7.1/docs.html
############Create Document############

create document. 自动生成 _id

POST users/_doc
{
“user” : “Mike”,
“post_date” : “2019-04-15T14:12:12”,
“message” : “trying out Kibana”
}

#create document. 指定Id。如果id已经存在，报错
PUT users/_doc/1?op_type=create
{
“user” : “Jack”,
“post_date” : “2019-05-15T14:12:12”,
“message” : “trying out Elasticsearch”
}

#create document. 指定 ID 如果已经存在，就报错
PUT users/_create/1
{
“user” : “Jack”,
“post_date” : “2019-05-15T14:12:12”,
“message” : “trying out Elasticsearch”
}

Get Document by ID

#Get the document by ID
GET users/_doc/1

Index & Update

#Update 指定 ID (先删除，在写入)
GET users/_doc/1

PUT users/_doc/1
{
“user” : “Mike”

}

#GET users/_doc/1
#在原文档上增加字段
POST users/_update/1/
{
“doc”:{
“post_date” : “2019-05-15T14:12:12”,
“message” : “trying out Elasticsearch”
}
}

Delete by Id

删除文档

DELETE users/_doc/1

Bulk 操作

#执行两次，查看每次的结果

#执行第1次
POST _bulk
{ “index” : { “_index” : “test”, “_id” : “1” } }
{ “field1” : “value1” }
{ “delete” : { “_index” : “test”, “_id” : “2” } }
{ “create” : { “_index” : “test2”, “_id” : “3” } }
{ “field1” : “value3” }
{ “update” : {"_id" : “1”, “_index” : “test”} }
{ “doc” : {“field2” : “value2”} }

#执行第2次
POST _bulk
{ “index” : { “_index” : “test”, “_id” : “1” } }
{ “field1” : “value1” }
{ “delete” : { “_index” : “test”, “_id” : “2” } }
{ “create” : { “_index” : “test2”, “_id” : “3” } }
{ “field1” : “value3” }
{ “update” : {"_id" : “1”, “_index” : “test”} }
{ “doc” : {“field2” : “value2”} }

mget 操作

GET /_mget
{
“docs” : [
{
“_index” : “test”,
“_id” : “1”
},
{
“_index” : “test”,
“_id” : “2”
}
]
}

#URI中指定index
GET /test/_mget

{
    "docs" : [
        {
            "_id" : "1"
        },
        {
            "_id" : "2"
        }
    ]
}

GET /_mget
{
“docs” : [
{
“_index” : “test”,
“_id” : “1”,
“_source” : false
},
{
“_index” : “test”,
“_id” : “2”,
“_source” : [“field3”, “field4”]
},
{
“_index” : “test”,
“_id” : “3”,
“_source” : {
“include”: [“user”],
“exclude”: [“user.location”]
}
}
]
}

msearch 操作

POST kibana_sample_data_ecommerce/_msearch
{}
{“query” : {“match_all” : {}},“size”:1}
{“index” : “kibana_sample_data_flights”}
{“query” : {“match_all” : {}},“size”:2}

清除测试数据

#清除数据
DELETE users
DELETE test
DELETE test2