<?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_Catalog
 * @copyright   Copyright (c) 2013 Magento Inc. (http://www.magentocommerce.com)
 * @license     http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 */

$this->startSetup()->run("

ALTER TABLE {$this->getTable('catalog_product_entity_tier_price')}
    ADD COLUMN `customer_group_id` smallint(5) unsigned NOT NULL default '0' AFTER `entity_id`,
    ADD CONSTRAINT `FK_CATALOG_PRODUCT_ENTITY_TIER_PRICE_GROUP` FOREIGN KEY (`customer_group_id`)
    REFERENCES {$this->getTable('customer_group')} (`customer_group_id`)
        ON DELETE CASCADE
        ON UPDATE CASCADE;

update {$this->getTable('catalog_product_entity_tier_price')} set `customer_group_id`=(select `customer_group_id` from {$this->getTable('customer_group')} limit 1);

")->endSetup();
