elasticsearchHow do I update documents in Elasticsearch using the update by query API?
The update by query API allows you to update one or more documents in an Elasticsearch index without having to reindex the entire data set. To do this, you must specify a query that identifies the documents you want to update, and a script that contains the operations you want to perform on those documents.
For example, the following code will update all documents in the my_index
index that have a name
field equal to John
:
POST my_index/_update_by_query
{
"query": {
"term": {
"name": "John"
}
},
"script": {
"source": "ctx._source.name = params.name",
"params": {
"name": "John Doe"
}
}
}
This will update the name
field of all documents matching the query to John Doe
.
In addition to the query
and script
parameters, the update by query API also supports other parameters such as conflicts
, refresh
, and timeout
. These parameters can be used to control how the update is performed and how it affects other operations on the index.
The update by query API is a powerful tool for making bulk updates to documents in an Elasticsearch index. For more information, see the Elasticsearch documentation.
More of Elasticsearch
- How can I use Elasticsearch to diagnose "yellow" issues?
- How can I configure an Elasticsearch Prometheus exporter?
- How can I use elasticsearch zone awareness to improve my software development?
- How can I use Elasticsearch and Zookeeper together to manage distributed applications?
- How do I use Elasticsearch with ZGC?
- How can I use Elasticsearch and ZFS together?
- How can I set up and use Elasticsearch on the Yandex Cloud platform?
- How do I set up an Elasticsearch Yum repository?
- How can I use YouTube to learn about Elasticsearch?
- How can users get started with Elasticsearch?
See more codes...