The most used bucket aggregation is the terms one. It groups the documents in buckets based on a single term value. This aggregation is often used to narrow down the search using the computed values as filters for the queries.
Executing terms aggregation
Getting ready
You need an up and running Elasticsearch installation, as we described in the Downloading and installing Elasticsearch recipe in Chapter 1, Getting Started.
To execute the commands, any HTTP client can be used, such as curl (https://curl.haxx.se/), Postman (https://www.getpostman.com/), or similar. Using the Kibana Console is recommended, as it provides code completion and better character escaping for Elasticsearch.
To correctly execute the following commands...