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 Serverless Preview Elastic Cloud Serverless projects are autoscaled environments, fully managed by Elastic and available on Elastic Cloud. Availability Preview This functionality is in technical preview and is ready for evaluation. Use with caution in production; it is not recommended for mission-critical workloads. Elastic will work to fix any issues, but features in technical preview are not subject to the support SLA of official GA features. Specific Support terms apply. Serverless interfaces and procedures might differ from classic Elastic Stack deployments.
• Query data in external storage using ES|QL Data Federation Stack Experimental 9.5 … The Elastic Stack includes Elastic's core products such as Elasticsearch, Kibana, Logstash, and Beats. Availability Experimental in 9.5 This functionality is experimental and is not ready for production usage. Experimental features may change or be removed at any time. Elastic will work to fix any issues, but experimental features are not subject to the support SLA of official GA features. Specific Support terms apply. Unless stated otherwise on the page, this functionality is available when your Elastic Stack is deployed on Elastic Cloud Hosted, Elastic Cloud Enterprise, Elastic Cloud on Kubernetes, and self-managed environments. This documentation corresponds to the latest patch available for each minor version. If you're not using the latest patch, check the release notes for changes. Serverless Unavailable Elastic Cloud Serverless projects are autoscaled environments, fully managed by Elastic and available on Elastic Cloud. Availability Unavailable This functionality is not available in Elastic Cloud Serverless.

To combine or reuse query results using subqueries, views, or FORK, refer to Combine and reuse ES|QL queries.