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Crea una tabla con tipos de datos

Crea una tabla con tipos de datos de ejemplo.

Muestra de código

C++

Para obtener información sobre cómo instalar y usar la biblioteca cliente de Spanner, consulta Bibliotecas cliente de Spanner.

Para autenticarte en Spanner, configura las credenciales predeterminadas de la aplicación. Si deseas obtener más información, consulta Configura la autenticación para un entorno de desarrollo local.

void CreateTableWithDatatypes(
    google::cloud::spanner_admin::DatabaseAdminClient client,
    std::string const& project_id, std::string const& instance_id,
    std::string const& database_id) {
  google::cloud::spanner::Database database(project_id, instance_id,
                                            database_id);
  auto metadata = client
                      .UpdateDatabaseDdl(database.FullName(), {R"""(
                        CREATE TABLE Venues (
                            VenueId         INT64 NOT NULL,
                            VenueName       STRING(100),
                            VenueInfo       BYTES(MAX),
                            Capacity        INT64,
                            AvailableDates  ARRAY<DATE>,
                            LastContactDate DATE,
                            OutdoorVenue    BOOL,
                            PopularityScore FLOAT64,
                            LastUpdateTime  TIMESTAMP NOT NULL OPTIONS
                                (allow_commit_timestamp=true)
                        ) PRIMARY KEY (VenueId))"""})
                      .get();
  google::cloud::spanner_testing::LogUpdateDatabaseDdl(  //! TODO(#4758)
      client, database, metadata.status());              //! TODO(#4758)
  if (!metadata) throw std::move(metadata).status();
  std::cout << "`Venues` table created, new DDL:\n" << metadata->DebugString();
}

C#

Para obtener información sobre cómo instalar y usar la biblioteca cliente de Spanner, consulta Bibliotecas cliente de Spanner.


using Google.Cloud.Spanner.Data;
using System.Threading.Tasks;

public class CreateTableWithDataTypesAsyncSample
{
    public async Task CreateTableWithDataTypesAsync(string projectId, string instanceId, string databaseId)
    {
        string connectionString = $"Data Source=projects/{projectId}/instances/{instanceId}/databases/{databaseId}";
        using var connection = new SpannerConnection(connectionString);

        // Define create table statement for table with supported datatypes columns.
        string createTableStatement =
        @"CREATE TABLE Venues (
                    VenueId INT64 NOT NULL,
                    VenueName STRING(100),
                    VenueInfo BYTES(MAX),
                    Capacity INT64,
                    AvailableDates ARRAY<DATE>,
                    LastContactDate DATE,
                    OutdoorVenue BOOL,
                    PopularityScore FLOAT64,
                    Revenue NUMERIC,
                    LastUpdateTime TIMESTAMP NOT NULL 
                        OPTIONS (allow_commit_timestamp=true)
                ) PRIMARY KEY (VenueId)";
        var cmd = connection.CreateDdlCommand(createTableStatement);
        await cmd.ExecuteNonQueryAsync();
    }
}

Go

Para obtener información sobre cómo instalar y usar la biblioteca cliente de Spanner, consulta Bibliotecas cliente de Spanner.


import (
	"context"
	"fmt"
	"io"

	database "cloud.google.com/go/spanner/admin/database/apiv1"
	adminpb "cloud.google.com/go/spanner/admin/database/apiv1/databasepb"
)

// Creates a Cloud Spanner table comprised of columns for each supported data type
// See https://cloud.google.com/spanner/docs/data-types
func createTableWithDatatypes(ctx context.Context, w io.Writer, db string) error {
	adminClient, err := database.NewDatabaseAdminClient(ctx)
	if err != nil {
		return err
	}
	defer adminClient.Close()

	op, err := adminClient.UpdateDatabaseDdl(ctx, &adminpb.UpdateDatabaseDdlRequest{
		Database: db,
		Statements: []string{
			`CREATE TABLE Venues (
				VenueId	INT64 NOT NULL,
				VenueName STRING(100),
				VenueInfo BYTES(MAX),
				Capacity INT64,
				AvailableDates ARRAY<DATE>,
				LastContactDate DATE,
				OutdoorVenue BOOL,
				PopularityScore FLOAT64,
				Revenue NUMERIC,
				LastUpdateTime TIMESTAMP NOT NULL OPTIONS (allow_commit_timestamp=true)
			) PRIMARY KEY (VenueId)`,
		},
	})
	if err != nil {
		return fmt.Errorf("UpdateDatabaseDdl: %w", err)
	}
	if err := op.Wait(ctx); err != nil {
		return err
	}
	fmt.Fprintf(w, "Created Venues table in database [%s]\n", db)
	return nil
}

Java

Para obtener información sobre cómo instalar y usar la biblioteca cliente de Spanner, consulta Bibliotecas cliente de Spanner.

static void createTableWithDatatypes(DatabaseAdminClient dbAdminClient, DatabaseId id) {
  OperationFuture<Void, UpdateDatabaseDdlMetadata> op =
      dbAdminClient.updateDatabaseDdl(
          id.getInstanceId().getInstance(),
          id.getDatabase(),
          Arrays.asList(
              "CREATE TABLE Venues ("
                  + "  VenueId         INT64 NOT NULL,"
                  + "  VenueName       STRING(100),"
                  + "  VenueInfo       BYTES(MAX),"
                  + "  Capacity        INT64,"
                  + "  AvailableDates  ARRAY<DATE>,"
                  + "  LastContactDate DATE,"
                  + "  OutdoorVenue    BOOL, "
                  + "  PopularityScore FLOAT64, "
                  + "  Revenue         NUMERIC, "
                  + "  VenueDetails    JSON, "
                  + "  LastUpdateTime  TIMESTAMP NOT NULL OPTIONS (allow_commit_timestamp=true)"
                  + ") PRIMARY KEY (VenueId)"),
          null);
  try {
    // Initiate the request which returns an OperationFuture.
    op.get();
    System.out.println("Created Venues table in database: [" + id + "]");
  } catch (ExecutionException e) {
    // If the operation failed during execution, expose the cause.
    throw (SpannerException) e.getCause();
  } catch (InterruptedException e) {
    // Throw when a thread is waiting, sleeping, or otherwise occupied,
    // and the thread is interrupted, either before or during the activity.
    throw SpannerExceptionFactory.propagateInterrupt(e);
  }
}

Node.js

Para obtener información sobre cómo instalar y usar la biblioteca cliente de Spanner, consulta Bibliotecas cliente de Spanner.


/**
 * TODO(developer): Uncomment the following lines before running the sample.
 */
// const projectId = 'my-project-id';
// const instanceId = 'my-instance';
// const databaseId = 'my-database';

// Imports the Google Cloud client library
const {Spanner} = require('@google-cloud/spanner');

// creates a client
const spanner = new Spanner({
  projectId: projectId,
});

const databaseAdminClient = spanner.getDatabaseAdminClient();

const request = [
  `CREATE TABLE Venues (
      VenueId                INT64 NOT NULL,
      VenueName              STRING(100),
      VenueInfo              BYTES(MAX),
      Capacity               INT64,
      AvailableDates         ARRAY<DATE>,
      LastContactDate        Date,
      OutdoorVenue           BOOL,
      PopularityScore        FLOAT64,
      LastUpdateTime TIMESTAMP NOT NULL OPTIONS (allow_commit_timestamp=true)
    ) PRIMARY KEY (VenueId)`,
];

// Creates a table in an existing database.
const [operation] = await databaseAdminClient.updateDatabaseDdl({
  database: databaseAdminClient.databasePath(
    projectId,
    instanceId,
    databaseId
  ),
  statements: request,
});

console.log(`Waiting for operation on ${databaseId} to complete...`);

await operation.promise();

console.log(`Created table Venues in database ${databaseId}.`);

PHP

Para obtener información sobre cómo instalar y usar la biblioteca cliente de Spanner, consulta Bibliotecas cliente de Spanner.

use Google\Cloud\Spanner\Admin\Database\V1\Client\DatabaseAdminClient;
use Google\Cloud\Spanner\Admin\Database\V1\UpdateDatabaseDdlRequest;

/**
 * Creates a table with suported datatypes.
 * Example:
 * ```
 * create_table_with_datatypes($projectId, $instanceId, $databaseId);
 * ```
 *
 * @param string $projectId The Google Cloud project ID.
 * @param string $instanceId The Spanner instance ID.
 * @param string $databaseId The Spanner database ID.
 */
function create_table_with_datatypes(string $projectId, string $instanceId, string $databaseId): void
{
    $databaseAdminClient = new DatabaseAdminClient();
    $databaseName = DatabaseAdminClient::databaseName($projectId, $instanceId, $databaseId);
    $statement = 'CREATE TABLE Venues (
        VenueId		           INT64 NOT NULL,
        VenueName              STRING(100),
        VenueInfo              BYTES(MAX),
        Capacity               INT64,
        AvailableDates         ARRAY<DATE>,
        LastContactDate        DATE,
        OutdoorVenue           BOOL,
        PopularityScore        FLOAT64,
        LastUpdateTime TIMESTAMP NOT NULL OPTIONS (allow_commit_timestamp=true)
    ) PRIMARY KEY (VenueId)';
    $request = new UpdateDatabaseDdlRequest([
        'database' => $databaseName,
        'statements' => [$statement]
    ]);

    $operation = $databaseAdminClient->updateDatabaseDdl($request);

    print('Waiting for operation to complete...' . PHP_EOL);
    $operation->pollUntilComplete();

    printf('Created Venues table in database %s on instance %s' . PHP_EOL,
        $databaseId, $instanceId);
}

Python

Para obtener información sobre cómo instalar y usar la biblioteca cliente de Spanner, consulta Bibliotecas cliente de Spanner.

# instance_id = "your-spanner-instance"
# database_id = "your-spanner-db-id"

from google.cloud.spanner_admin_database_v1.types import \
    spanner_database_admin

spanner_client = spanner.Client()
database_admin_api = spanner_client.database_admin_api

request = spanner_database_admin.UpdateDatabaseDdlRequest(
    database=database_admin_api.database_path(
        spanner_client.project, instance_id, database_id
    ),
    statements=[
        """CREATE TABLE Venues (
        VenueId         INT64 NOT NULL,
        VenueName       STRING(100),
        VenueInfo       BYTES(MAX),
        Capacity        INT64,
        AvailableDates  ARRAY<DATE>,
        LastContactDate DATE,
        OutdoorVenue    BOOL,
        PopularityScore FLOAT64,
        LastUpdateTime  TIMESTAMP NOT NULL
        OPTIONS(allow_commit_timestamp=true)
    ) PRIMARY KEY (VenueId)"""
    ],
)
operation = database_admin_api.update_database_ddl(request)

print("Waiting for operation to complete...")
operation.result(OPERATION_TIMEOUT_SECONDS)

print(
    "Created Venues table on database {} on instance {}".format(
        database_id, instance_id
    )
)

Ruby

Para obtener información sobre cómo instalar y usar la biblioteca cliente de Spanner, consulta Bibliotecas cliente de Spanner.

# project_id  = "Your Google Cloud project ID"
# instance_id = "Your Spanner instance ID"
# database_id = "Your Spanner database ID"

require "google/cloud/spanner"

spanner = Google::Cloud::Spanner.new project: project_id
client  = spanner.database instance_id, database_id

job = client.update statements: [
  "CREATE TABLE Venues (
    VenueId         INT64 NOT NULL,
    VenueName       STRING(100),
    VenueInfo       BYTES(MAX),
    Capacity        INT64,
    AvailableDates  ARRAY<DATE>,
    LastContactDate DATE,
    OutdoorVenue    BOOL,
    PopularityScore FLOAT64,
    LastUpdateTime  TIMESTAMP NOT NULL OPTIONS (allow_commit_timestamp=true)
   ) PRIMARY KEY (VenueId)"
]

puts "Waiting for update database operation to complete"

job.wait_until_done!

puts "Created table Venues in #{database_id}"

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