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pg_create_database.php
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pg_create_database.php
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<?php
/**
* Copyright 2022 Google Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* For instructions on how to run the full sample:
*
* @see https://github.com/GoogleCloudPlatform/php-docs-samples/tree/main/spanner/README.md
*/
namespace Google\Cloud\Samples\Spanner;
// [START spanner_create_postgres_database]
use Google\Cloud\Spanner\SpannerClient;
use Google\Cloud\Spanner\Admin\Database\V1\DatabaseDialect;
/**
* Creates a database that uses Postgres dialect
*
* @param string $instanceId The Spanner instance ID.
* @param string $databaseId The Spanner database ID.
*/
function pg_create_database(string $instanceId, string $databaseId): void
{
$spanner = new SpannerClient();
$instance = $spanner->instance($instanceId);
if (!$instance->exists()) {
throw new \LogicException("Instance $instanceId does not exist");
}
// A DB with PostgreSQL dialect does not support extra DDL statements in the
// `createDatabase` call.
$operation = $instance->createDatabase($databaseId, [
'databaseDialect' => DatabaseDialect::POSTGRESQL
]);
print('Waiting for operation to complete...' . PHP_EOL);
$operation->pollUntilComplete();
$database = $instance->database($databaseId);
$dialect = DatabaseDialect::name($database->info()['databaseDialect']);
printf('Created database %s with dialect %s on instance %s' . PHP_EOL,
$databaseId, $dialect, $instanceId);
$table1Query = 'CREATE TABLE Singers (
SingerId bigint NOT NULL PRIMARY KEY,
FirstName varchar(1024),
LastName varchar(1024),
SingerInfo bytea,
FullName character varying(2048) GENERATED
ALWAYS AS (FirstName || \' \' || LastName) STORED
)';
$table2Query = 'CREATE TABLE Albums (
AlbumId bigint NOT NULL,
SingerId bigint NOT NULL REFERENCES Singers (SingerId),
AlbumTitle text,
PRIMARY KEY(SingerId, AlbumId)
)';
// You can execute the DDL queries in a call to updateDdl/updateDdlBatch
$operation = $database->updateDdlBatch([$table1Query, $table2Query]);
$operation->pollUntilComplete();
}
// [END spanner_create_postgres_database]
// The following 2 lines are only needed to run the samples
require_once __DIR__ . '/../../testing/sample_helpers.php';
\Google\Cloud\Samples\execute_sample(__FILE__, __NAMESPACE__, $argv);