> ## Documentation Index > Fetch the complete documentation index at: https://docs.galileo.ai/llms.txt > Use this file to discover all available pages before exploring further. # Update Dataset Content > Update the content of a dataset. The `index` and `column_name` fields are treated as keys tied to a specific version of the dataset. As such, these values are considered immutable identifiers for the dataset's structure. For example, if an edit operation changes the name of a column, subsequent edit operations in the same request should reference the column using its original name. The `If-Match` header is used to ensure that updates are only applied if the client's version of the dataset matches the server's version. This prevents conflicts from simultaneous updates. The `ETag` header in the response provides the new version identifier after a successful update. ## OpenAPI ````yaml https://api.galileo.ai/public/v2/openapi.json patch /v2/datasets/{dataset_id}/content openapi: 3.1.0 info: title: FastAPI version: 0.1.0 servers: - url: https://api.galileo.ai description: Galileo Public APIs - galileo-v2 security: [] paths: /v2/datasets/{dataset_id}/content: patch: tags: - datasets summary: Update Dataset Content description: >- Update the content of a dataset. The `index` and `column_name` fields are treated as keys tied to a specific version of the dataset. As such, these values are considered immutable identifiers for the dataset's structure. For example, if an edit operation changes the name of a column, subsequent edit operations in the same request should reference the column using its original name. The `If-Match` header is used to ensure that updates are only applied if the client's version of the dataset matches the server's version. This prevents conflicts from simultaneous updates. The `ETag` header in the response provides the new version identifier after a successful update. operationId: update_dataset_content_v2_datasets__dataset_id__content_patch parameters: - name: dataset_id in: path required: true schema: type: string format: uuid4 title: Dataset Id - name: If-Match in: header required: false schema: anyOf: - type: string - type: 'null' description: ETag of the dataset as a version identifier. title: If-Match description: ETag of the dataset as a version identifier. example: d89cce33-549d-4b6d-b220-afb641d859c8 requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/UpdateDatasetContentRequest' responses: '204': description: Dataset content updated successfully headers: ETag: description: New version identifier for the dataset schema: type: string '404': description: Dataset not found '412': description: >- ETag mismatch; client's If-Match does not match current resource version '422': description: Validation error in request body content: application/json: schema: $ref: '#/components/schemas/HTTPValidationError' '423': description: >- Resource lock could not be acquired; another update may be in progress security: - APIKeyHeader: [] - OAuth2PasswordBearer: [] - HTTPBasic: [] components: schemas: UpdateDatasetContentRequest: properties: edits: items: oneOf: - $ref: '#/components/schemas/DatasetPrependRow' - $ref: '#/components/schemas/DatasetAppendRow' - $ref: '#/components/schemas/DatasetUpdateRow' - $ref: '#/components/schemas/DatasetDeleteRow' - $ref: '#/components/schemas/DatasetFilterRows' - $ref: '#/components/schemas/DatasetCopyRecordData' discriminator: propertyName: edit_type mapping: append_row: $ref: '#/components/schemas/DatasetAppendRow' copy_record_data: $ref: '#/components/schemas/DatasetCopyRecordData' delete_row: $ref: '#/components/schemas/DatasetDeleteRow' filter_rows: $ref: '#/components/schemas/DatasetFilterRows' prepend_row: $ref: '#/components/schemas/DatasetPrependRow' update_row: $ref: '#/components/schemas/DatasetUpdateRow' type: array minItems: 1 title: Edits error: Edits list cannot be empty. type: object required: - edits title: UpdateDatasetContentRequest description: >- This structure represent the valid edits operations that can be performed on a dataset. There edit operations are: - Row edits: These edits are performed on a specific row of the dataset. - EditMode.id: The edit is performed on the index (numeric index). DEPRECATED - EditMode.row_id: The edit is performed on the row_id of the row. - Global edits: These edits are performed on the entire dataset and should not be mixed with row edits. - EditMode.global_edit HTTPValidationError: properties: detail: items: $ref: '#/components/schemas/ValidationError' type: array title: Detail type: object title: HTTPValidationError DatasetPrependRow: properties: edit_type: type: string const: prepend_row title: Edit Type default: prepend_row values: additionalProperties: anyOf: - type: string - type: integer - type: number - additionalProperties: anyOf: - type: string - type: integer - type: number - type: 'null' type: object - type: 'null' type: object title: Values row_id: anyOf: - type: string format: uuid4 - type: 'null' title: Row Id type: object required: - values title: DatasetPrependRow DatasetAppendRow: properties: edit_type: type: string const: append_row title: Edit Type default: append_row values: additionalProperties: anyOf: - type: string - type: integer - type: number - additionalProperties: anyOf: - type: string - type: integer - type: number - type: 'null' type: object - type: 'null' type: object title: Values row_id: anyOf: - type: string format: uuid4 - type: 'null' title: Row Id type: object required: - values title: DatasetAppendRow DatasetUpdateRow: properties: row_id: type: string format: uuid4 title: Row Id edit_type: type: string const: update_row title: Edit Type default: update_row values: additionalProperties: anyOf: - type: string - type: integer - type: number - additionalProperties: anyOf: - type: string - type: integer - type: number - type: 'null' type: object - type: 'null' type: object title: Values type: object required: - row_id - values title: DatasetUpdateRow DatasetDeleteRow: properties: row_id: type: string format: uuid4 title: Row Id edit_type: type: string const: delete_row title: Edit Type default: delete_row type: object required: - row_id title: DatasetDeleteRow DatasetFilterRows: properties: edit_type: type: string const: filter_rows title: Edit Type default: filter_rows row_ids: items: type: string format: uuid4 type: array minItems: 1 title: Row Ids type: object required: - row_ids title: DatasetFilterRows description: This global operation filters a set of rows and discard the rest. DatasetCopyRecordData: properties: edit_type: type: string const: copy_record_data title: Edit Type default: copy_record_data project_id: anyOf: - type: string format: uuid4 - type: 'null' title: Project Id queue_id: anyOf: - type: string format: uuid4 - type: 'null' title: Queue Id ids: items: type: string format: uuid4 type: array title: Ids description: List of trace or span IDs to copy data from prepend: type: boolean title: Prepend description: A flag to control appending vs prepending default: true use_generated_output_column: type: boolean title: Use Generated Output Column description: >- If True, write trace output to generated_output column; if False, write to output column (backward compatible) default: false type: object required: - ids title: DatasetCopyRecordData description: Prepend or append trace or span data to dataset. ValidationError: properties: loc: items: anyOf: - type: string - type: integer type: array title: Location msg: type: string title: Message type: type: string title: Error Type type: object required: - loc - msg - type title: ValidationError securitySchemes: APIKeyHeader: type: apiKey in: header name: Galileo-API-Key OAuth2PasswordBearer: type: oauth2 flows: password: scopes: {} tokenUrl: https://api.galileo.ai/login HTTPBasic: type: http scheme: basic ````