Sql 聚合函数结果在select语句中

希望下面的代码能够演示我要实现的目标

问题是，在我尝试计算

VatableCash

时，没有一个输入选择得到解决，因此我在尝试选择它时得到了“无效列”

很抱歉，如果这里有明显的事情我可以做。SQL不是我的强项之一

select
    OrderHeader.ID,
    sum(OrderLine.NetPrice) as OrderLineNetPrice,
    sum(OrderLine.GrossPrice) as OrderLineGrossPrice,
    sum(
        case when PaymentOption_ID = 8
            then Payment.Amount
            else 0
        end
    ) as TotalCashAmount,
    ((OrderLineGrossPrice - OrderLineNetPrice) / OrderLineGrossPrice) * TotalCashAmount as VatableCash
    from OrderHeader
    inner join Payment on Payment.OrderHeader_ID = OrderHeader.ID
    inner join OrderLine on OrderLine.OrderHeader_ID = OrderHeader.ID
    group by OrderHeader.ID

---

您需要使用子查询

你可以试试这个

;WITH CTE AS
(
    select
        OrderHeader.ID,
        sum(OrderLine.NetPrice) as OrderLineNetPrice,
        sum(OrderLine.GrossPrice) as OrderLineGrossPrice,
        sum(
            case when PaymentOption_ID = 8
                then Payment.Amount
                else 0
            end
        ) as TotalCashAmount
    from OrderHeader
        inner join Payment on Payment.OrderHeader_ID = OrderHeader.ID
        inner join OrderLine on OrderLine.OrderHeader_ID = OrderHeader.ID
    group by OrderHeader.ID
)
SELECT *, 
    ((OrderLineGrossPrice - OrderLineNetPrice) / OrderLineGrossPrice) * TotalCashAmount as VatableCash
FROM CTE

---

您需要使用子查询

你可以试试这个

;WITH CTE AS
(
    select
        OrderHeader.ID,
        sum(OrderLine.NetPrice) as OrderLineNetPrice,
        sum(OrderLine.GrossPrice) as OrderLineGrossPrice,
        sum(
            case when PaymentOption_ID = 8
                then Payment.Amount
                else 0
            end
        ) as TotalCashAmount
    from OrderHeader
        inner join Payment on Payment.OrderHeader_ID = OrderHeader.ID
        inner join OrderLine on OrderLine.OrderHeader_ID = OrderHeader.ID
    group by OrderHeader.ID
)
SELECT *, 
    ((OrderLineGrossPrice - OrderLineNetPrice) / OrderLineGrossPrice) * TotalCashAmount as VatableCash
FROM CTE

---

爱十字架！只要你想要一些方便的额外栏目，就可以使用它

select
    OrderHeader.ID,
    sum(OrderLine.NetPrice) as OrderLineNetPrice,
    sum(OrderLine.GrossPrice) as OrderLineGrossPrice,
    TotalCashAmount,
    ((OrderLineGrossPrice - OrderLineNetPrice) / OrderLineGrossPrice) * TotalCashAmount as VatableCash
    from OrderHeader
    inner join Payment on Payment.OrderHeader_ID = OrderHeader.ID
    inner join OrderLine on OrderLine.OrderHeader_ID = OrderHeader.ID
    cross apply ( select sum(
        case when PaymentOption_ID = 8
            then Payment.Amount
            else 0
        end
    )) as subquery(TotalCashAmount)
    group by OrderHeader.ID

---

爱十字架！只要你想要一些方便的额外栏目，就可以使用它

select
    OrderHeader.ID,
    sum(OrderLine.NetPrice) as OrderLineNetPrice,
    sum(OrderLine.GrossPrice) as OrderLineGrossPrice,
    TotalCashAmount,
    ((OrderLineGrossPrice - OrderLineNetPrice) / OrderLineGrossPrice) * TotalCashAmount as VatableCash
    from OrderHeader
    inner join Payment on Payment.OrderHeader_ID = OrderHeader.ID
    inner join OrderLine on OrderLine.OrderHeader_ID = OrderHeader.ID
    cross apply ( select sum(
        case when PaymentOption_ID = 8
            then Payment.Amount
            else 0
        end
    )) as subquery(TotalCashAmount)
    group by OrderHeader.ID

---

在计算增值税现金时，您可以重复计算orderlinenetprice、orderlinegrossprice和totalcashamount，将增值税现金的计算移动到外部查询或使用cte（实际上也是一样）。您可以重复计算orderlinenetprice，orderlinegrossprice和totalcashamount计算增值税现金时，将增值税现金的计算移动到外部查询或使用cte（实际上是相同的）.小问题是，我认为我还必须使用

OrderLineNetPrice

和

OrderLineGrossPrice

来实现这一点，如果是这种情况，我会考虑使用下面的子查询解决方案。不过我现在不能测试，所以我会在可以的时候检查它们。谢谢如果需要，可以将它们添加到其他交叉应用中：交叉应用（选择sum（OrderLine.NetPrice）作为OrderLineNetPrice，选择sum（OrderLine.GrossPrice）作为OrderLineGrossPrice）作为Sumsky的一个小问题是，我认为我还必须使用

OrderLineNetPrice

和

OrderLineGrossPrice

来实现这一点，如果是这样的话，我会考虑使用下面的子查询解决方案。不过我现在不能测试，所以我会在可以的时候检查它们。谢谢如果需要，您可以将它们添加到其他交叉应用中：交叉应用（选择sum（OrderLine.NetPrice）作为OrderLineNetPrice，选择sum（OrderLine.GrossPrice）作为OrderLineGrossPrice）作为sumsquery谢谢！需要一些时间来测试。我会很快回复你的！谢谢需要一些时间来测试。我会很快回复你的！