getConnection()->addColumn($this->getTable('sales_quote_address'), 'shipping_tax_amount', 'decimal(12,4) NULL'); $installer->getConnection()->addColumn($this->getTable('sales_quote_address'), 'base_shipping_tax_amount', 'decimal(12,4) NULL'); $installer->getConnection()->addColumn($this->getTable('sales_order'), 'shipping_tax_amount', 'decimal(12,4) NULL'); $installer->getConnection()->addColumn($this->getTable('sales_order'), 'base_shipping_tax_amount', 'decimal(12,4) NULL'); $installer->addAttribute('quote_address', 'shipping_tax_amount', array('type'=>'static')); $installer->addAttribute('quote_address', 'base_shipping_tax_amount', array('type'=>'static')); $installer->addAttribute('order', 'shipping_tax_amount', array('type'=>'static')); $installer->addAttribute('order', 'base_shipping_tax_amount', array('type'=>'static')); $installer->addAttribute('invoice', 'shipping_tax_amount', array('type'=>'decimal')); $installer->addAttribute('invoice', 'base_shipping_tax_amount', array('type'=>'decimal')); $installer->addAttribute('creditmemo', 'shipping_tax_amount', array('type'=>'decimal')); $installer->addAttribute('creditmemo', 'base_shipping_tax_amount', array('type'=>'decimal'));