Delete a table

Delete a table from a dataset.

Explore further

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

• Manage logical views
• Manage tables

Code sample

C#

Before trying this sample, follow the C# setup instructions in the BigQuery quickstart using client libraries. For more information, see the BigQuery C# API reference documentation.

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

using Google.Cloud.BigQuery.V2;
using System;

public class BigQueryDeleteTable
{
    public void DeleteTable(
        string projectId = "your-project-id",
        string datasetId = "your_dataset_id",
        string tableId = "your_table_id"
    )
    {
        BigQueryClient client = BigQueryClient.Create(projectId);
        client.DeleteTable(datasetId, tableId);
        Console.WriteLine($"Table {tableId} deleted.");
    }
}

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"
)

// deleteTable demonstrates deletion of a BigQuery table.
func deleteTable(projectID, datasetID, tableID string) error {
	// projectID := "my-project-id"
	// datasetID := "mydataset"
	// tableID := "mytable"
	ctx := context.Background()
	client, err := bigquery.NewClient(ctx, projectID)
	if err != nil {
		return fmt.Errorf("bigquery.NewClient: %w", err)
	}
	defer client.Close()

	table := client.Dataset(datasetID).Table(tableID)
	if err := table.Delete(ctx); 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.TableId;

public class DeleteTable {

  public static void main(String[] args) {
    // TODO(developer): Replace these variables before running the sample.
    String datasetName = "MY_DATASET_NAME";
    String tableName = "MY_TABLE_NAME";
    deleteTable(datasetName, tableName);
  }

  public static void deleteTable(String datasetName, String tableName) {
    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();
      boolean success = bigquery.delete(TableId.of(datasetName, tableName));
      if (success) {
        System.out.println("Table deleted successfully");
      } else {
        System.out.println("Table was not found");
      }
    } catch (BigQueryException e) {
      System.out.println("Table was not deleted. \n" + e.toString());
    }
  }
}

PHP

Before trying this sample, follow the PHP setup instructions in the BigQuery quickstart using client libraries. For more information, see the BigQuery PHP API reference documentation.

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

use Google\Cloud\BigQuery\BigQueryClient;

/**
 * Deletes the given table
 *
 * @param string $projectId The project Id of your Google Cloud Project.
 * @param string $datasetId The BigQuery dataset ID.
 * @param string $tableId The BigQuery table ID.
 */
function delete_table(string $projectId, string $datasetId, string $tableId): void
{
    $bigQuery = new BigQueryClient([
      'projectId' => $projectId,
    ]);
    $dataset = $bigQuery->dataset($datasetId);
    $table = $dataset->table($tableId);
    $table->delete();
    printf('Deleted table %s.%s' . PHP_EOL, $datasetId, $tableId);
}

Ruby

Before trying this sample, follow the Ruby setup instructions in the BigQuery quickstart using client libraries. For more information, see the BigQuery Ruby API reference documentation.

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

require "google/cloud/bigquery"

def delete_table dataset_id = "my_dataset_id", table_id = "my_table_id"
  bigquery = Google::Cloud::Bigquery.new
  dataset  = bigquery.dataset dataset_id
  table    = dataset.table table_id

  table.delete

  puts "Table #{table_id} deleted."
end

What's next

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