ElasticSearch study notes

ElasticSearch

 Fatherly

Head plugin 

 Index basic addition, deletion, modification and query CRUD

1. New index

语法：PUT /indexName
demo: PUT /product

 2. Delete the index

语法： DELETE /indexName?pretty 其中?pretty可加可不加，只是让返回数据更方便查看
demo: DELETE /product?pretty

3. Query index

Query all data in a specific index

语法：GET /indexName/_search
demo: GET /product/_search

 Query all index information under the project

语法：GET /_cat/indices?v

 4. Insert data

语法：PUT /indexName/_doc/id 
{ json数据}

5. Modify data

 full replacement

语法：PUT /indexName/_doc/id 
{ json数据}

Specify field update

语法1：POST /indexName/_doc/id/_update
{ 
    "doc": {
        "fieldName": fieldValue,
        ...
    }
}

语法2（推荐）：POST /indexName/_update/id
{ 
    "doc": {
        "fieldName": fieldValue,
        ...
    }
}

 6. Delete the data in the specific index

语法： DELETE /indexName/_doc/id
demo：DELETE /product/_doc/1

Mapping - mapping

mapping type

 Get index field mapping

GET /indexName/_mappings

search and query

metadata_source

disable_source

data source filter

 Common filter rules

 

 Query String

DSL (Domain Specific Language)

Full text search: fulltext search

 exact match exact match