案情陈述之和

Question

Select SUM(IF(CPaymentType='Check', CAmount, 0)) as PaymentAmountCheck, 
       SUM(IF(CPaymentType='Cash', CAmount, 0)) as PaymentAmountCash 
from TableOrderPayment 
where CPaymentType IN ('Check','Cash') and CDate<=SYSDATETIME() and CStatus='Active';

我想对PaymentAmountCheck和PaymentAmountCash求和，有人可以帮助我吗

Answer 1

您可以使用以下派生选项添加这两个字段：

SELECT PaymentAmountCheck, 
      PaymentAmountCash, 
      PaymentAmountCheck + PaymentAmountCash AS TotalAmount
FROM (
 Select SUM(IIF(CPaymentType='Check', CAmount, 0)) as PaymentAmountCheck, 
       SUM(IIF(CPaymentType='Cash', CAmount, 0)) as PaymentAmountCash,
 from TableOrderPayment 
 where CPaymentType IN ('Check','Cash') and CDate<=SYSDATETIME() and CStatus='Active';
) AS Q;

在SQL Server中，您也可以使用IIF

Answer 2

由于您在where子句中提到了CPaymentType，因此只需在sum(CAmount)中添加select即可得到PaymentAmountCheck和PaymentAmountCash的总和。 / p>

  Select SUM(IF(CPaymentType='Check', CAmount, 0)) as PaymentAmountCheck, 
           SUM(IF(CPaymentType='Cash', CAmount, 0)) as PaymentAmountCash ,
           sum(CAmount) total
    from TableOrderPayment 
    where CPaymentType IN ('Check','Cash') and CDate<=SYSDATETIME() and CStatus='Active';