<?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)
 */

/** @var $installer Mage_Catalog_Model_Resource_Setup */
$installer = $this;
$groupPriceAttrId = $installer->getAttribute('catalog_product', 'group_price', 'attribute_id');
$priceAttrId = $installer->getAttribute('catalog_product', 'price', 'attribute_id');
$connection = $installer->getConnection();

// update sort_order of Group Price attribute to be after Price
$select = $connection->select()
    ->join(
        array('t2' => $installer->getTable('eav/entity_attribute')),
        't1.attribute_group_id = t2.attribute_group_id',
        array('sort_order' => new Zend_Db_Expr('t2.sort_order + 1'))
    )->where('t1.attribute_id = ?', $groupPriceAttrId)
    ->where('t2.attribute_id = ?', $priceAttrId);
$query = $select->crossUpdateFromSelect(array('t1' => $installer->getTable('eav/entity_attribute')));
$connection->query($query);

// update sort_order of all other attributes to be after Group Price
$select = $connection->select()
    ->join(
        array('t2' => $installer->getTable('eav/entity_attribute')),
        't1.attribute_group_id = t2.attribute_group_id',
        array('sort_order' => new Zend_Db_Expr('t1.sort_order + 1'))
    )->where('t1.attribute_id != ?', $groupPriceAttrId)
    ->where('t1.sort_order >= t2.sort_order')
    ->where('t2.attribute_id = ?', $groupPriceAttrId);
$query = $select->crossUpdateFromSelect(array('t1' => $installer->getTable('eav/entity_attribute')));
$connection->query($query);
