SQL 查询 - 多个 ISNULL 和计算的问题

Question

我写了这个基本上计算项目未来价格的查询，有点像 'What If' 报告。我在 select 命令中的最后两次计算中遇到了一些问题，但我不太确定我做错了什么，下面是完整的查询：

SELECT
    T1.[ItemCode],
    T2.[ItemName],
    T2.Cardcode, 
    T4.Price as 'Buying Price',
    T4.Currency as 'Buy Currency',
    isnull(T6.Rate,1) as 'Todays Exchange Rate (Buy)',
    ( ISNULL(T4.price,1)/ ISNULL (T6.Rate,1)) as 'Todays Buying Price',
    T0.Cardcode as 'Customer code',
    T0.[CardName] as 'Filler',
    T3.Price as 'Selling Price',
    T3.Currency as 'Sell Currency',
    isnull(T5.Rate,1) as 'Todays Exchange Rate (Sell)',
    (ISNULL(T3.price,1)/ ISNULL (T5.Rate,1)) as 'Todays Selling Price',
    (ISNULL(T3.price,1)/ ISNULL (T5.Rate,1))-(ISNULL(T4.price,1)/ ISNULL (T6.Rate,1))/( ISNULL(T3.price,1))*100) as 'Gross %',
    (((( ISNULL(T4.price,1)/ ISNULL (T6.Rate,1))+ T2.CstGrpCode)* T2.U_Shipping_Percent)/(( ISNULL(T3.price,1))/( ISNULL (T5.Rate,1))))) *100 as 'Net % exc. outbound cost'
FROM
    ORDR T0
    Inner join RDR1 T1 on T0.docentry = T1.docentry
    Inner join OITM T2 on T1.itemcode = T2.itemcode
    left outer join ITM1 T3 on T1.itemcode = T3.itemcode and T3.pricelist = 2
    left outer join ITM1 T4 on T1.itemcode = T4.itemcode and T4.pricelist = 1
    left outer join ORTT T5 on T3.Currency = T5.Currency and CONVERT(varchar(10), T5.RateDate, 102) = CONVERT(varchar(10), getdate(), 102)
    left outer join ORTT T6 on T4.Currency = T6.Currency and CONVERT(varchar(10), T6.RateDate, 102) = CONVERT(varchar(10), getdate(), 102)
Where
    T3.Price <> 0 and
    T4.Price <> 0       
Order by
    T0.DocEntry

这是我在最后一次计算 select 命令时遇到的错误：

消息 102，级别 15，状态 1，第 17 行 ')' 附近的语法不正确。

任何帮助都会很棒，我很确定我有很多括号（或太少）但我似乎无法使查询正常工作。

Answer 1

大部分括号都是不必要的。我猜你想要第一个 (A-B)/C。

(ISNULL(T3.price,1) / ISNULL(T5.Rate,1) - ISNULL(T4.price,1) / ISNULL(T6.Rate,1)) /
    ISNULL(T3.price,1) / 100 as 'Gross %',

第二个相当于这个，我觉得(T4/T6 + T2) / (T3*T5):

(ISNULL(T4.price,1) / ISNULL(T6.Rate,1) + T2.CstGrpCode) * T2.U_Shipping_Percent) /
    ISNULL(T5.Rate,1) / ISNULL(T3.price,1) * 100

SQL 查询 - 多个 ISNULL 和计算的问题

SQL Query - Issues with Multiple ISNULL's and Calculations

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