Piwik\Plugins\DevicesDetection\Updates_1_14::getMigrations PHP Method

    public function getMigrations(Updater $updater)
    {
        return array($this->migration->db->changeColumnTypes('log_visit', array('config_os_version' => 'VARCHAR( 100 ) DEFAULT NULL', 'config_device_type' => 'VARCHAR( 100 ) DEFAULT NULL')));
    }