Update a description

Update the description of an existing dataset resource.

Explore further

For detailed documentation that includes this code sample, see the following:

• Update dataset properties

Code sample

Go

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.

To authenticate to BigQuery, set up Application Default Credentials. For more information, see Set up authentication for client libraries.

import (
	"context"
	"fmt"

	"cloud.google.com/go/bigquery"
)

// updateDatasetDescription demonstrates how the Description metadata of a dataset can
// be read and modified.
func updateDatasetDescription(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: %w", err)
	}
	defer client.Close()

	ds := client.Dataset(datasetID)
	meta, err := ds.Metadata(ctx)
	if err != nil {
		return err
	}
	update := bigquery.DatasetMetadataToUpdate{
		Description: "Updated Description.",
	}
	if _, err = ds.Update(ctx, update, meta.ETag); err != nil {
		return err
	}
	return nil
}

Java

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.

To authenticate to BigQuery, set up Application Default Credentials. For more information, see Set up authentication for client libraries.

import com.google.cloud.bigquery.BigQuery;
import com.google.cloud.bigquery.BigQueryException;
import com.google.cloud.bigquery.BigQueryOptions;
import com.google.cloud.bigquery.Dataset;

public class UpdateDatasetDescription {

  public static void main(String[] args) {
    // TODO(developer): Replace these variables before running the sample.
    String datasetName = "MY_DATASET_NAME";
    String newDescription = "this is the new dataset description";
    updateDatasetDescription(datasetName, newDescription);
  }

  public static void updateDatasetDescription(String datasetName, String newDescription) {
    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);
      bigquery.update(dataset.toBuilder().setDescription(newDescription).build());
      System.out.println("Dataset description updated successfully to " + newDescription);
    } catch (BigQueryException e) {
      System.out.println("Dataset description was not updated \n" + e.toString());
    }
  }
}

What's next

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