Geo Queries
Elasticsearch supports geospatial data, allowing you to perform queries based on geographical locations.
Example: Geo Query
Let’s find products available within a certain distance from a specific location.
GET /stores/_search
{
"query": {
"bool": {
"must": [
{ "match": { "product": "wireless headphones" } }
],
"filter": {
"geo_distance": {
"distance": "10km",
"location": {
"lat": 40.7128,
"lon": -74.0060
}
}
}
}
}
}
In this example:
- The geo_distance filter ensures that only stores within 10km of the specified location (latitude 40.7128, longitude -74.0060) are returned.
Using Query DSL For Complex Search Queries in Elasticsearch
Elasticsearch is a powerful search engine that provides a flexible and powerful query language called Query DSL (Domain Specific Language). Query DSL allows you to write complex search queries to retrieve the most relevant data from your Elasticsearch indices. This article will guide you through the basics and advanced features of Query DSL, with detailed examples and outputs, to help you master complex search queries in Elasticsearch.