Create or update an ES|QL dataset

Auth

Creates or replaces a dataset that references a data source in ES|QL data federation. Dataset names participate in the index namespace and must follow index or alias naming rules. Returns 404 if the referenced data source does not exist.

ES|QL Data Federation

Required privileges

Index privileges manage

Path parameters

name string required

The dataset name to create or update.

Query parameters

master_timeout string · default: 30s

Period to wait for a connection to the master node.

timeout string · default: 30s

The time to wait for the request to be completed.

Request body

data_source string required

The name of the referenced data source. The data source must already exist.

resource string required

The URI that identifies the data to read, resolved against the referenced data source. It can include glob patterns. For example, a recursive pattern can match all Parquet files under the s3://logs-bucket/access prefix.

description string

A free-text description of the dataset.

mappings object

User-declared mapping on the dataset definition

dynamic enum · default: true

The policy for columns that are not declared in properties. true (the default) infers undeclared columns and overlays the declarations; false makes the declaration the entire schema, so undeclared columns are not queryable.

Values: true false
properties map string to object

The per-column declarations, keyed by logical column name.

<string> object
type string required

The declared column type.

rename_from string

The underlying file column that this logical column reads from. This is a read-path rename: the physical column becomes this single logical column. Responses always use rename_from. path, the former name for this field, is still accepted in requests and means the same thing.

format string

The date-parse pattern for a declared date column, mirroring the index date-field format.

_id object

The _id meta-field configuration, sourcing the document identity from a column.

path string required

The name of the column that provides the document identity.

settings map string to object

Format and parsing-specific settings that configure how the resource is read. Common keys include format, which explicitly selects a registered format, and partition_detection, which accepts auto, hive, template, or none. Additional keys depend on the format reader. Compression can be inferred from the resource URI.

Response

application/json
acknowledged boolean required

For a successful response, this value is always true. On failure, an exception is returned instead.