It is indeed missing in the databse, but...
In the SQL file of installation it is also missing... Or do I look over it? When I download the package, browse to back > tables.sql
Is the name 'total_number_of_products or order_total_numer_of_products?
CREATE TABLE IF NOT EXISTS `#__hikashop_order` (
`order_id` int(10) unsigned NOT NULL AUTO_INCREMENT,
`order_billing_address_id` int(10) unsigned NOT NULL DEFAULT '0',
`order_shipping_address_id` int(10) unsigned NOT NULL DEFAULT '0',
`order_user_id` int(10) unsigned NOT NULL DEFAULT '0',
`order_parent_id` int(10) unsigned NOT NULL DEFAULT '0',
`order_status` varchar(255) NOT NULL DEFAULT '',
`order_type` varchar(255) NOT NULL DEFAULT 'sale',
`order_number` varchar(255) NOT NULL DEFAULT '',
`order_created` int(10) unsigned NOT NULL DEFAULT '0',
`order_modified` int(10) unsigned NOT NULL DEFAULT '0',
`order_invoice_id` int(10) unsigned NOT NULL DEFAULT '0',
`order_invoice_number` varchar(255) NOT NULL DEFAULT '',
`order_invoice_created` int(10) unsigned NOT NULL DEFAULT '0',
`order_currency_id` int(10) unsigned NOT NULL DEFAULT '0',
`order_currency_info` TEXT NULL,
`order_full_price` decimal(17,5) NOT NULL DEFAULT '0.00000',
`order_tax_info` TEXT NULL,
`order_discount_code` varchar(255) NOT NULL DEFAULT '',
`order_discount_price` decimal(17,5) NOT NULL DEFAULT '0.00000',
`order_discount_tax` decimal(17,5) NOT NULL DEFAULT '0.00000',
`order_payment_id` varchar(255) NOT NULL DEFAULT '',
`order_payment_method` varchar(255) NOT NULL DEFAULT '',
`order_payment_price` decimal(17,5) NOT NULL DEFAULT '0.00000',
`order_payment_tax` decimal(17,5) NOT NULL DEFAULT '0.00000',
`order_payment_params` TEXT NULL,
`order_shipping_id` varchar(255) NOT NULL DEFAULT '',
`order_shipping_method` varchar(255) NOT NULL DEFAULT '',
`order_shipping_price` decimal(17,5) NOT NULL DEFAULT '0.00000',
`order_shipping_tax` decimal(17,5) NOT NULL DEFAULT '0.00000',
`order_shipping_params` TEXT NULL,
`order_partner_id` int(10) unsigned NOT NULL DEFAULT '0',
`order_partner_price` decimal(17,5) NOT NULL DEFAULT '0.00000',
`order_partner_paid` int(11) NOT NULL DEFAULT '0',
`order_partner_currency_id` int(10) unsigned NOT NULL DEFAULT '0',
`order_ip` varchar(255) NOT NULL DEFAULT '',
`order_site_id` varchar(255) NULL DEFAULT '',
`order_lang` varchar(255) NULL DEFAULT '',
`order_token` varchar(255) NULL DEFAULT '',
`order_weight` decimal(12,3) unsigned NULL,
`order_weight_unit` varchar(255) NULL,
`order_volume` decimal(12,3) unsigned NULL,
`order_dimension_unit` varchar(255) NULL,
PRIMARY KEY (`order_id`),
KEY `order_user_id` (`order_user_id`)
) ENGINE=MyISAM /*!40100 DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci*/;