Nested and Sub-Aggregations
Learn to combine aggregations by nesting metrics inside buckets, building multi-level analytics, and traversing nested document structures with the nested aggregation.
Combining Aggregations
A single aggregation answers one question. Real analytics often need layered answers: average price per category, or top brands per region. Elasticsearch lets you nest aggregations inside one another.
This lesson shows how to compose them.
The aggs Hierarchy
Any bucket aggregation can contain a sub-aggs block. The sub-aggregation runs once per bucket, operating only on the documents in that bucket.
This is the core mechanism for multi-dimensional analytics.
All lessons in this course
- Metric Aggregations
- Bucket Aggregations
- Pipeline Aggregations
- Nested and Sub-Aggregations