system/database/drivers/postgre/postgre_utility.php

<?php
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 5.2.4 or newer
 *
 * NOTICE OF LICENSE
 *
 * Licensed under the Open Software License version 3.0
 *
 * This source file is subject to the Open Software License (OSL 3.0) that is
 * bundled with this package in the files license.txt / license.rst.  It is
 * also available through the world wide web at this URL:
 * http://opensource.org/licenses/OSL-3.0
 * If you did not receive a copy of the license and are unable to obtain it
 * through the world wide web, please send an email to
 * licensing@ellislab.com so we can send you a copy immediately.
 *
 * @package		CodeIgniter
 * @author		EllisLab Dev Team
 * @copyright	Copyright (c) 2008 - 2013, EllisLab, Inc. (http://ellislab.com/)
 * @license		http://opensource.org/licenses/OSL-3.0 Open Software License (OSL 3.0)
 * @link		http://codeigniter.com
 * @since		Version 1.0
 * @filesource
 */
defined('BASEPATH') OR exit('No direct script access allowed');

/**
 * Postgre Utility Class
 *
 * @category	Database
 * @author		EllisLab Dev Team
 * @link		http://codeigniter.com/user_guide/database/
 */
class CI_DB_postgre_utility extends CI_DB_utility {

	/**
	 * List databases statement
	 *
	 * @var	string
	 */
	protected $_list_databases	= 'SELECT datname FROM pg_database';

	/**
	 * OPTIMIZE TABLE statement
	 *
	 * @var	string
	 */
	protected $_optimize_table	= 'REINDEX TABLE %s';

	// --------------------------------------------------------------------

	/**
	 * Export
	 *
	 * @param	array	$params	Preferences
	 * @return	mixed
	 */
	protected function _backup($params = array())
	{
		// Currently unsupported
		return $this->db->display_error('db_unsupported_feature');
	}
}

/* End of file postgre_utility.php */
/* Location: ./system/database/drivers/postgre/postgre_utility.php */