Query multiple indices or clusters with ES|QL
ES|QL allows you to query across multiple indices, clusters, and projects, and combine data from multiple sources. Learn more in the following sections:
- Query multiple indices
- Query across clusters
- Query across Serverless projects
- Query data in external storage using ES|QL Data Federation
- Combine result sets with subqueries
- Define virtual indices using ES|QL views
Tip
For tips on writing efficient queries, refer to Optimize ES|QL query performance.