条件WHERE条件SQL脚本

Question

我需要在进行求和时过滤特定行。表结构和数据如下。

我希望除行[Gain/Lost]以外的所有行的WHERE [Reason] = 'Order Placed' AND [No Of Month Old] = 1列值为SUM。

以下案例值为-560。

Answer 1

你用英语很好地描述了你的条件 - 现在你只需要在SQL中编写相同的东西：

SELECT SUM([Gain/Lost]
FROM   mytable
WHERE  NOT ([Reason] = 'Order Placed' AND [No Of Month Old] = 1)

Answer 2

select userid, sum([Gain/Lost])
from tablename
where [Reason] <> 'Order Placed'
   or [No Of Month Old] <> 1
group by userid

Answer 3

SELECT UserID,
       SUM(CASE WHEN [Reason] = 'Order Placed' AND [No Of Month Old] = 1
                THEN 0
                ELSE [Gain/Lost]
            END)
FROM tt
GROUP BY UserID

Answer 4

SELECT SUM([GAIN/LOST]) as 'Gain/Lost'
FROM YourTable yt
WHERE REASON <> 'Order Placed' AND [No of Month Old] <> 1
GROUP BY UserID