Производная таблица / формула SQL - PullRequest
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Производная таблица / формула SQL

0 голосов
/ 09 августа 2011

SQL 2005:

Я работаю над множеством запросов SQL, которые генерируют формулу.

Этот математический расчет, пример: (3000 -30) / 1477 * 100 = 201,1% должен быть сгенерирован из набора таблиц. 

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

Ответы [ 2 ]

1 голос
/ 10 августа 2011

Хм, думаю, я бы попробовал что-то еще в этом духе: 

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

Обратите внимание, что у меня нет экземпляра SQL-сервера для проверки этого.

1 голос
/ 09 августа 2011

Я думаю, вы ищете что-то подобное? 

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
...