Aggregations: Analyzing Search Results
Elasticsearch supports aggregations, which allow you to perform analysis on search results and retrieve summary information.
Terms Aggregation
The terms aggregation is used to group search results by a specified field and provide counts for each group.
GET /products/_search
{
"size": 0,
"aggs": {
"categories": {
"terms": {
"field": "category"
}
}
}
}
In this example:
- We’re using the terms aggregation to group search results by the category field.
- Elasticsearch will return a list of categories along with the count of documents in each category.
Searching Documents in Elasticsearch
Searching documents in Elasticsearch is a foundational skill for anyone working with this powerful search engine. Whether you’re building a simple search interface or conducting complex data analysis, understanding how to effectively search and retrieve documents is essential.
In this article, we’ll walk through the basics of searching in Elasticsearch, providing clear explanations, examples, and outputs to help you get started.
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