How to group data by geo-coordinates in Elasticsearch and get _source in each area?

Question

elasticsearch

Elasticsearch allows you to group data by area using GeoHash grid Aggregation
But I still need to get one document from each area. (Similar to MySQL's GROUP BY.)
How can I do this without having to query each area?

Answer 1

Use top_hits inside the aggregation:
https://www.elastic.co/guide/en/elasticsearch/refe...
`sort` specifies a parameter that will serve as the calculation of max and document selection.