从mysql join中跳过父ID

Question

我的查询工作正常。

$stmt = "select t.tax_name, "
        . "(select truncate( sum((i.item_tax / 100) * i.item_qty_total), 2 ) from {CI}invoice_items i "
        . "where i.tax_id = t.tax_id $qs ) total_tax, "
        . "(select truncate( sum(i.item_qty_total), 2 ) from {CI}invoice_items i "
        . "where i.tax_id = t.tax_id $qs ) turnover "
        . "from {CI}taxes t ";

输出

但问题是我必须根据发票状态跳过invoice_items，我试试这样

$stmt = "select t.tax_name, "
      . "(select truncate( sum((i.item_tax / 100) * i.item_qty_total), 2 ) from {CI}invoice_items i "
      . "left join {CI}invoices inv on inv.invoice_id = i.invoice_id and inv.status not like 'cancel%' "
      . "where i.tax_id = t.tax_id $qs ) total_tax, "
      . "(select truncate( sum(i.item_qty_total), 2 ) from {CI}invoice_items i "
      . "left join {CI}invoices inv on inv.invoice_id = i.invoice_id and inv.status not like 'cancel%' "
      . "where i.tax_id = t.tax_id $qs ) turnover "
      . "from {CI}taxes t ";

但是连接不会影响结果，它显示的结果与第一个查询提供的结果相同。我的JOIN有什么问题？

预期结果：

以下是invoice_items

的架构

 CREATE TABLE `ci_invoice_items` (
   `ii_id` bigint(10) NOT NULL AUTO_INCREMENT COMMENT 'INVOICE_ITEM_ID',
   `invoice_id` bigint(10) NOT NULL,
   `customer_id` bigint(10) NOT NULL,
   `item_id` bigint(10) NOT NULL,
   `invoice_date` datetime NOT NULL,
   `item_price` decimal(10,2) NOT NULL,
   `item_unit` varchar(255) NOT NULL,
   `item_qty` decimal(7,2) NOT NULL,
   `item_qty_total` decimal(10,2) NOT NULL COMMENT 'TOTAL_AMOUNT_INCLUDING_QUANTITY',
   `item_tax` decimal(10,2) NOT NULL,
   `item_tax_total` decimal(10,2) NOT NULL COMMENT 'TOTAL_AMOUNT_INCLUDING_TAX',
   `tax_id` int(2) NOT NULL,
   `item_description` mediumtext NOT NULL,
   PRIMARY KEY (`ii_id`),
 KEY `invoice_id` (`invoice_id`,`customer_id`,`item_id`)
) ENGINE=MyISAM AUTO_INCREMENT=170 DEFAULT CHARSET=utf8

和invoices

 CREATE TABLE `ci_invoices` (
   `invoice_id` bigint(10) NOT NULL AUTO_INCREMENT,
   `customer_id` bigint(10) NOT NULL,
   `tmp_inv_number` int(10) NOT NULL,
   `inv_prefix` varchar(50) NOT NULL,
   `invoice_type` varchar(20) NOT NULL,
   `invoice_number` varchar(255) NOT NULL,
   `order_id` int(10) NOT NULL,
   `inter_state` varchar(10) NOT NULL,
   `form` varchar(50) NOT NULL,
   `order_date` datetime NOT NULL,
   `ref_number` varchar(200) NOT NULL,
   `com_ref_per` varchar(150) NOT NULL COMMENT 'COMPANY_REFF_NUMBER',
   `com_ref_num` varchar(50) NOT NULL COMMENT 'COMPANY_REFF_NAME',
   `due_date` datetime NOT NULL,
   `invoice_date` datetime NOT NULL,
   `invoice_note` mediumtext NOT NULL,
   `shipping_address` text NOT NULL,
   `tax_id` int(5) NOT NULL,
   `shipping` decimal(9,2) NOT NULL,
   `total_amount` decimal(18,2) NOT NULL,
   `round_off_amt` decimal(5,2) NOT NULL COMMENT 'ROUND_OFF_AMOUNT',
   `paid_amount` decimal(18,2) NOT NULL,
   `c_date` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP COMMENT 'CURRENT_DATE',
   `made_by` varchar(100) NOT NULL,
   `status` varchar(10) NOT NULL DEFAULT 'unpaid',
   `reset_status` tinyint(1) NOT NULL DEFAULT '0',
   PRIMARY KEY (`invoice_id`),
 KEY `customer_id` (`customer_id`)
) ENGINE=MyISAM AUTO_INCREMENT=158 DEFAULT CHARSET=utf8