SQL派生表/公式

SQL 2005：

我正在处理一组生成公式的SQL查询

这个数学计算，例如：（3000-30）/1477*100=201.1%，必须从一组表格中生成

Value : 3000 is generated from this query ..
select sum(DaysSupply) as [Total Days Supply] from vOeOrderWide where patcustid = 4797 
Output is [Total Days Supply]


Value : 30 is generated from this query ..
select top 1 DaysSupply from VoeOrderwide where patcustid = 4797 order by datefilled desc
Output is [DaysSupply]

Value : 1477 is generated from these set of queries ...

declare @d1  datetime;
declare @d2  datetime;
set @d1= (select top 1 DateFilled from vOeOrderWide where patcustid = 4797 
order by DateFilled asc)
set @d2= (select top 1 DateFilled from vOeOrderWide where patcustid = 4797 order by DateFilled DESC )
select DATEDIFF(d,@d1,@d2) as [Days Between] 

Output is [Days Between]

I want to combine all these queries and generate the formula as ..

[Total Days Supply] - [DaysSupply]  /  [Days Between]  * 100

---

我猜你在找这样的东西

DECLARE @TotalDaysSupply int, @DaysSupply int

select @TotalDaysSupply = sum(DaysSupply) as [Total Days Supply] from vOeOrderWide where patcustid = 4797 

SET @DaysSupply = (select top 1 DaysSupply from VoeOrderwide where patcustid = 4797 order by datefilled desc)

declare @d1  datetime;
declare @d2  datetime;
DECLARE @DaysBetween int

set @d1= (select top 1 DateFilled from vOeOrderWide where patcustid = 4797 
order by DateFilled asc)
set @d2= (select top 1 DateFilled from vOeOrderWide where patcustid = 4797 order by  DateFilled DESC )

select @DaysBetween = DATEDIFF(d,@d1,@d2)

--[Total Days Supply] - [DaysSupply]  /  [Days Between]  * 100

SELECT  CAST(@TotalDaysSupply AS float) - @DaysSupply/ @DaysBetween * 100 AS Result

---

嗯，我想我应该在这方面多做些尝试：

WITH supply_data (Total_Days_Supply, Earliest_Date_Filled, Latest_Date_Filled) as (
                  SELECT SUM(DaysSupply), MIN(DateFilled), MAX(DateFilled)
                  FROM voeOrderWide
                  WHERE patCustId = 4797)
SELECT 100.00 * ((Total_Days_Supply - (SELECT TOP 1 DaysSupply
                                       FROM voeOrderWide
                                       WHERE patCustId = 4797
                                       AND DateFilled = LatestDateFilled
                                       ORDER BY DateFilled DESC)) 
                 / DateDiff(d, Earliest_Date_Filled, Latest_Date_Filled))
FROM supply_data

---

请注意，我没有SQL server实例来测试这一点。

您有代码，那么问题是什么呢？在这个patcustid=4797中，我将作为输入参数传递。我正在尝试在存储过程或用户定义函数中创建这组sql！！选择@TotalDaysSupply=sum（DaysSupply）作为[Total Days Supply]此语法引发异常！！您使用的最终公式（

totalDaysSupply-（（daysSupply/daysBetween）*100）

）与所述公式（

（（totalDaysSupply-daysSupply）/daysBetween）*100

）不匹配。抱歉，我在没有management studio的情况下编写了此脚本。您的最终公式是[总供应天数]-[DaysSupply]/[DaysBetween]*100。我想它出了问题，但我猜你会弄明白的。