Update By Query
editUpdate By Query
editThe simplest usage of _update_by_query just performs an update on every document in the index without changing the source. This is useful to pick up a new property or some other online mapping change.
'use strict' const { Client } = require('@elastic/elasticsearch') const client = new Client({ cloud: { id: '<cloud-id>' }, auth: { apiKey: 'base64EncodedKey' } }) async function run () { await client.index({ index: 'game-of-thrones', document: { character: 'Ned Stark', quote: 'Winter is coming.' } }) await client.index({ index: 'game-of-thrones', refresh: true, document: { character: 'Arya Stark', quote: 'A girl is Arya Stark of Winterfell. And I\'m going home.' } }) await client.updateByQuery({ index: 'game-of-thrones', refresh: true, script: { lang: 'painless', source: 'ctx._source["house"] = "stark"' }, query: { match: { character: 'stark' } } }) const result = await client.search({ index: 'game-of-thrones', query: { match_all: {} } }) console.log(result.hits.hits) } run().catch(console.log)