/magento/app/code/core/Mage/Log/data/log_setup/data-install-1.6.0.0.php

<?php
/**
 * Magento
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Open Software License (OSL 3.0)
 * that is bundled with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://opensource.org/licenses/osl-3.0.php
 * 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 license@magentocommerce.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade Magento to newer
 * versions in the future. If you wish to customize Magento for your
 * needs please refer to http://www.magentocommerce.com for more information.
 *
 * @category    Mage
 * @package     Mage_Log
 * @copyright   Copyright (c) 2012 Magento Inc. (http://www.magentocommerce.com)
 * @license     http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 */

$installer = $this;
/* @var $installer Mage_Core_Model_Resource_Setup */

$data = array(
    array(
        'type_id'     => 1,
        'type_code'   => 'hour',
        'period'      => 1,
        'period_type' => 'HOUR',
    ),

    array(
        'type_id'     => 2,
        'type_code'   => 'day',
        'period'      => 1,
        'period_type' => 'DAY',
    ),
);

foreach ($data as $bind) {
    $installer->getConnection()->insertForce($installer->getTable('log/summary_type_table'), $bind);
}