Update a model description

Update a model's description property for a given model ID.

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

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"
)

// updateModelDescription demonstrates fetching BigQuery ML model metadata and updating the
// Description metadata.
func updateModelDescription(projectID, datasetID, modelID string) error {
	// projectID := "my-project-id"
	// datasetID := "mydataset"
	// modelID := "mymodel"
	ctx := context.Background()
	client, err := bigquery.NewClient(ctx, projectID)
	if err != nil {
		return fmt.Errorf("bigquery.NewClient: %w", err)
	}
	defer client.Close()

	model := client.Dataset(datasetID).Model(modelID)
	oldMeta, err := model.Metadata(ctx)
	if err != nil {
		return fmt.Errorf("couldn't retrieve model metadata: %w", err)
	}
	update := bigquery.ModelMetadataToUpdate{
		Description: "This model was modified from a Go program",
	}
	if _, err = model.Update(ctx, update, oldMeta.ETag); err != nil {
		return fmt.Errorf("couldn't update model: %w", 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.Model;
import com.google.cloud.bigquery.ModelId;

// Sample to update description on a model
public class UpdateModelDescription {

  public static void main(String[] args) {
    // TODO(developer): Replace these variables before running the sample.
    String datasetName = "MY_DATASET_NAME";
    String modelName = "MY_MODEL_NAME";
    String newDescription = "A really great model.";
    updateModelDescription(datasetName, modelName, newDescription);
  }

  public static void updateModelDescription(
      String datasetName, String modelName, 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();

      Model model = bigquery.getModel(ModelId.of(datasetName, modelName));
      bigquery.update(model.toBuilder().setDescription(newDescription).build());
      System.out.println("Model description updated successfully to " + newDescription);
    } catch (BigQueryException e) {
      System.out.println("Model description was not updated \n" + e.toString());
    }
  }
}

What's next

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