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<?php
/**
* Copyright 2016 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/master/spanner/README.md
*/
namespace Google\Cloud\Samples\Spanner;
// [START spanner_query_data_with_index]
use Google\Cloud\Spanner\SpannerClient;
/**
* Queries sample data from the database using SQL and an index.
*
* The index must exist before running this sample. You can add the index
* by running the `add_index` sample or by running this DDL statement against
* your database:
*
* CREATE INDEX AlbumsByAlbumTitle ON Albums(AlbumTitle)
*
* Example:
* ```
* query_data_with_index($instanceId, $databaseId);
* ```
*
* @param string $instanceId The Spanner instance ID.
* @param string $databaseId The Spanner database ID.
* @param string $startTitle The start of the title index.
* @param string $endTitle The end of the title index.
*/
function query_data_with_index($instanceId, $databaseId, $startTitle, $endTitle)
{
$spanner = new SpannerClient();
$instance = $spanner->instance($instanceId);
$database = $instance->database($databaseId);
$parameters = [
'startTitle' => $startTitle,
'endTitle' => $endTitle
];
$results = $database->execute(
'SELECT AlbumId, AlbumTitle, MarketingBudget ' .
'FROM Albums@{FORCE_INDEX=AlbumsByAlbumTitle} ' .
'WHERE AlbumTitle >= @startTitle AND AlbumTitle < @endTitle',
['parameters' => $parameters]
);
foreach ($results as $row) {
printf('AlbumId: %s, AlbumTitle: %s, MarketingBudget: %d' . PHP_EOL,
$row['AlbumId'], $row['AlbumTitle'], $row['MarketingBudget']);
}
}
// [END spanner_query_data_with_index]
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