Query multiple indices or clusters with ES|QL
ES|QL allows you to query across multiple indices, clusters, and projects. 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
To combine or reuse query results using subqueries, views, or FORK, refer to Combine and reuse ES|QL queries.
Tip
For tips on writing efficient queries, refer to Optimize ES|QL query performance.