View file upload/library/XenForo/Install/Upgrade/1030034-130b4.php

<?php

class XenForo_Install_Upgrade_1030034 extends XenForo_Install_Upgrade_Abstract
{
	public function getVersionName()
	{
		return '1.3.0 Beta 4';
	}

	public function step1()
	{
		$this->executeUpgradeQuery("
			ALTER TABLE  `xf_user_upgrade_log` ADD INDEX log_date (`log_date`)
		");
	}
}