Understanding Aggregations in Elasticsearch
Aggregations in Elasticsearch are similar to SQL’s GROUP BY clause. They allow you to summarize and analyze data by grouping it into buckets based on field values. There are various types of aggregations in Elasticsearch, but for grouping data, the primary ones are:
- Terms Aggregation
- Histogram Aggregation
- Date Histogram Aggregation
Elasticsearch Group By Field Aggregation & Bucketing
Elasticsearch is a powerful search and analytics engine that provides various aggregation capabilities to analyze and summarize data. One of the essential aggregation features is the “Group By Field” aggregation, also known as “Terms Aggregation” or “Bucketing.” This article will explore Elasticsearch’s Group By Field Aggregation in detail, including its functionality, use cases, syntax, examples, and outputs, all explained in beginner-friendly language.