getConnection(); /* @var $conn Varien_Db_Adapter_Pdo_Mysql */ $conn->addColumn($installer->getTable('sales_flat_quote'), 'customer_dob', 'datetime after customer_suffix'); $installer->addAttribute('quote', 'customer_dob', array('type'=>'static', 'backend'=>'eav/entity_attribute_backend_datetime')); $installer->addAttribute('order', 'customer_dob', array('type'=>'datetime', 'backend'=>'eav/entity_attribute_backend_datetime'));