Multiple Documents

_update_by_query

• To update documents in Elasticsearch based on a query, you can use the _update_by_query API.

# 모든 Documents를 업데이트 합니다.
POST /store/_update_by_query
{
  "script": {
    "source": "ctx._source.stock-=1"
  }
}

# product가 peach인 Documents만 업데이트 합니다.
POST /store/_update_by_query
{
  "script": {
    "source": "ctx._source.stock-=1"
  },
  "query": {
    "term": {
      "product": "peach"
    }
  }
}

 

_delete_by_query

• To delete documents in Elasticsearch based on a query, you can use the _delete_by_query API.

POST /store/_delete_by_query
{
  "query": {
    "term": {
      "product": "apple"
    }
  }
}

 

Bulk actions

• Bulk actions in Elasticsearch are a way to perform multiple index, update, delete, or create operations in a single API call.

 

Action Type

• Index: Adds or updates a document. If the document already exists, it will be replaced.
• Update: Partially updates a document. If the document does not exist, you can use upsert to create it.
• Delete: Deletes a document by its ID.
• Create: Adds a new document. If the document already exists, the operation will fail.

POST /_bulk
{ "index" : { "_index" : "store", "_id" : "10" } }
{ "product" : "apple", "stock" : 5 }
{ "update" : { "_index" : "store", "_id" : "10" } }
{ "doc" : { "stock" : 6 } }
{ "index" : { "_index" : "store", "_id" : "11" } }
{ "product" : "banana", "stock" : 5 }
{ "index" : { "_index" : "store", "_id" : "11" } }
{ "product" : "banana", "stock" : 10 }
{ "index" : { "_index" : "store", "_id" : "12" } }
{ "product" : "pear", "stock" : 10 }
{ "delete" : { "_index" : "store", "_id" : "12" } }

POST /store/_bulk
{ "index" : { "_id" : "13" } }
{ "product" : "milk", "stock" : 1 }

 

[참고자료]

• 실리콘밸리 엔지니어와 함께하는 Elasticsearch