$stmt = "insert into {CI}payment_logs (customer_id,invoice_id,invoice_total_amount,invoice_paid_amount,customer_paid_amount,invoice_payment_on ) "
. "values( ?,?,NOW() )";
$this->db->query( $stmt,array( $Customer_Id,$Invoice_Id,$Invoice_Total_Amount,$Deducted_Amount,$Paid_By_Cust ) );
$Log_Id = $this->db->insert_id(); // Returns Last Insert ID
根据我的需要,这是正常工作,但我必须在特定条件下更新同一个表中每一行的状态.看看图片,
这是上述查询的插入数据.正如您在invoice_total_amount中看到的那样是总金额,但是这个金额在第三行数据中完成.在高亮点数量SUM等于invoice_total_amount之后,我必须将invoice_status字段更新为已付款,并且在休息字段中我必须将状态更新为部分.我尝试更新状态以添加触发器但不成功.
然后我尝试使用此命令的PHP.
update {CI}payment_logs
set invoice_status = IF( invoice_total_amount = sum(invoices_paid_amount),'paid','partial' )
where log_id = ?
但我没有得到invoices_paid_amount的SUM,其中invoice_id = 5,我尝试在IF条件下使用子查询,但它无效我的查询.
最佳答案
加入计算总和的子查询.
原文链接：https://www.f2er.com/mysql/433184.htmlUPDATE {CI}payment_logs l1
JOIN (SELECT invoice_id,SUM(invoices_paid_amount) total
FROM {CI}payment_logs
GROUP BY invoice_id) l2
ON l1.invoice_id = l2.invoice_id
SET invoice_status = IF(invoice_total_amount = total,'partial')
WHERE log_id = ?