Créer une table avec des types de données

Créer une table avec des exemples de types de données.

Exemple de code

C++

Pour savoir comment installer et utiliser la bibliothèque cliente pour Spanner, consultez la page Bibliothèques clientes Spanner.

Pour vous authentifier auprès de Spanner, configurez les Identifiants par défaut de l'application. Pour en savoir plus, consultez Configurer l'authentification pour un environnement de développement 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#

Pour savoir comment installer et utiliser la bibliothèque cliente pour Spanner, consultez la page Bibliothèques clientes 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

Pour savoir comment installer et utiliser la bibliothèque cliente pour Spanner, consultez la page Bibliothèques clientes Spanner.


import (
	"context"
	"fmt"
	"io"

	database "cloud.google.com/go/spanner/admin/database/apiv1"
	adminpb "google.golang.org/genproto/googleapis/spanner/admin/database/v1"
)

// 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

Pour savoir comment installer et utiliser la bibliothèque cliente pour Spanner, consultez la page Bibliothèques clientes 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

Pour savoir comment installer et utiliser la bibliothèque cliente pour Spanner, consultez la page Bibliothèques clientes 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

Pour savoir comment installer et utiliser la bibliothèque cliente pour Spanner, consultez la page Bibliothèques clientes 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

Pour savoir comment installer et utiliser la bibliothèque cliente pour Spanner, consultez la page Bibliothèques clientes 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

Pour savoir comment installer et utiliser la bibliothèque cliente pour Spanner, consultez la page Bibliothèques clientes 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}"

Étapes suivantes

Pour rechercher et filtrer des exemples de code pour d'autres produits Google Cloud, consultez l'exemple de navigateur Google Cloud.