MysqlDatabaseCreator.php
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MysqlDatabaseCreator.php
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	<?php

	namespace MediaWiki\Installer;

	use MediaWiki\Status\Status;
	use Wikimedia\Rdbms\IDatabase;

	class MysqlDatabaseCreator extends NetworkedDatabaseCreator {
	/** @inheritDoc */
	protected function existsInConnection( IDatabase $conn, $database ) {
	return (bool)$conn->newSelectQueryBuilder()
	->select( '1' )
	->from( 'information_schema.schemata' )
	->where( [ 'schema_name' => $database ] )
	->caller( __METHOD__ )
	->fetchRow();
	}

	/** @inheritDoc */
	protected function createInConnection( IDatabase $conn, $database ): Status {
	$encDatabase = $conn->addIdentifierQuotes( $database );
	$conn->query( "CREATE DATABASE IF NOT EXISTS $encDatabase", __METHOD__ );
	return Status::newGood();
	}
	}