Update dataset access

Update a dataset's access controls.

Documentation pages that include this code sample

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Code sample


Before trying this sample, follow the Go setup instructions in the BigQuery Quickstart Using Client Libraries. For more information, see the BigQuery Go API reference documentation.

import (


// updateDatasetAccessControl demonstrates how the access control policy of a dataset
// can be amended by adding an additional entry corresponding to a specific user identity.
func updateDatasetAccessControl(projectID, datasetID string) error {
	// projectID := "my-project-id"
	// datasetID := "mydataset"
	ctx := context.Background()
	client, err := bigquery.NewClient(ctx, projectID)
	if err != nil {
		return fmt.Errorf("bigquery.NewClient: %v", err)
	defer client.Close()

	ds := client.Dataset(datasetID)
	meta, err := ds.Metadata(ctx)
	if err != nil {
		return err
	// Append a new access control entry to the existing access list.
	update := bigquery.DatasetMetadataToUpdate{
		Access: append(meta.Access, &bigquery.AccessEntry{
			Role:       bigquery.ReaderRole,
			EntityType: bigquery.UserEmailEntity,
			Entity:     "sample.bigquery.dev@gmail.com"},

	// Leverage the ETag for the update to assert there's been no modifications to the
	// dataset since the metadata was originally read.
	if _, err := ds.Update(ctx, update, meta.ETag); err != nil {
		return err
	return nil


Before trying this sample, follow the Java setup instructions in the BigQuery Quickstart Using Client Libraries. For more information, see the BigQuery Java API reference documentation.

import com.google.cloud.bigquery.Acl;
import com.google.cloud.bigquery.Acl.Role;
import com.google.cloud.bigquery.Acl.User;
import com.google.cloud.bigquery.BigQuery;
import com.google.cloud.bigquery.BigQueryException;
import com.google.cloud.bigquery.BigQueryOptions;
import com.google.cloud.bigquery.Dataset;
import java.util.ArrayList;

public class UpdateDatasetAccess {

  public static void main(String[] args) {
    // TODO(developer): Replace these variables before running the sample.
    String datasetName = "MY_DATASET_NAME";
    // Create a new ACL granting the READER role to "sample.bigquery.dev@gmail.com"
    // For more information on the types of ACLs available see:
    // https://cloud.google.com/storage/docs/access-control/lists
    Acl newEntry = Acl.of(new User("sample.bigquery.dev@gmail.com"), Role.READER);

    updateDatasetAccess(datasetName, newEntry);

  public static void updateDatasetAccess(String datasetName, Acl newEntry) {
    try {
      // Initialize client that will be used to send requests. This client only needs to be created
      // once, and can be reused for multiple requests.
      BigQuery bigquery = BigQueryOptions.getDefaultInstance().getService();

      Dataset dataset = bigquery.getDataset(datasetName);

      // Get a copy of the ACLs list from the dataset and append the new entry
      ArrayList<Acl> acls = new ArrayList<>(dataset.getAcl());

      System.out.println("Dataset Access Control updated successfully");
    } catch (BigQueryException e) {
      System.out.println("Dataset Access control was not updated \n" + e.toString());


Before trying this sample, follow the Node.js setup instructions in the BigQuery Quickstart Using Client Libraries. For more information, see the BigQuery Node.js API reference documentation.

// Import the Google Cloud client library
const {BigQuery} = require('@google-cloud/bigquery');
const bigquery = new BigQuery();

async function updateDatasetAccess() {
  // Update a datasets's access controls.

   * TODO(developer): Uncomment the following lines before running the sample.
  // const datasetId = "my_dataset";

  // Create new role metadata
  const newRole = {
    role: 'READER',
    entity_type: 'userByEmail',
    userByEmail: 'sample.bigquery.dev@gmail.com',

  // Retreive current dataset metadata
  const dataset = bigquery.dataset(datasetId);
  const [metadata] = await dataset.getMetadata();

  // Add new role to role acess array
  const [apiResponse] = await dataset.setMetadata(metadata);
  const newAccessRoles = apiResponse.access;
  newAccessRoles.forEach(role => console.log(role));


Before trying this sample, follow the Python setup instructions in the BigQuery Quickstart Using Client Libraries. For more information, see the BigQuery Python API reference documentation.

from google.cloud import bigquery

# Construct a BigQuery client object.
client = bigquery.Client()

# TODO(developer): Set dataset_id to the ID of the dataset to fetch.
# dataset_id = 'your-project.your_dataset'

dataset = client.get_dataset(dataset_id)  # Make an API request.

entry = bigquery.AccessEntry(

entries = list(dataset.access_entries)
dataset.access_entries = entries

dataset = client.update_dataset(dataset, ["access_entries"])  # Make an API request.

full_dataset_id = "{}.{}".format(dataset.project, dataset.dataset_id)
    "Updated dataset '{}' with modified user permissions.".format(full_dataset_id)

What's next

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