You're viewing version 2.7 of the OpenSearch documentation. This version is no longer maintained. For the latest version, see the current documentation. For information about OpenSearch version maintenance, see Release Schedule and Maintenance Policy.
Object field types
Object field types contain values that are objects or relations. The following table lists all object field types that OpenSearch supports.
| Field data type | Description |
|---|---|
object | A JSON object. |
nested | Used when objects in an array need to be indexed independently as separate documents. |
flat_object | A JSON object treated as a string. |
join | Establishes a parent-child relationship between documents in the same index. |