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9.1

SQL Server 2005 Loop

Asked by av8or16 in MS SQL Server, SQL Server 2005

Tags: SQL Server 2005

I am trying to convert a model built in excel over to sql server 2005.  My goal is to create a dynamic projection.

Specifically, the value should be set at the value specified in the database until the running total has reached half of the reserves and then decline at 20% from there.

TestModelInputs (16 entries)
yrID INT
FieldID INT            = 1642
MYear INT             values are 2005 though 2015

TestModelInputs2 (1 entry)
vID
FieldID INT            =1642
Peak  INT             =150
Reserves INT            =500
StartDT DateTime      =7/1/2008
PeakDT DateTime      =7/1/2010

VIEW  TestModelProjections
CREATE VIEW TestModelProjections
AS

SELECT TestModelInputs.FieldID
, TestModelInputs.MYear
, CASE
WHEN TestModelInputs.MYear < YEAR(TestModelInputs2.StartDT) THEN 0
WHEN TestModelInputs.MYear = YEAR(TestModelInputs2.StartDT) THEN ((CAST(TestModelInputs2.Peak AS FLOAT) * CAST((365 - datepart(dy,TestModelInputs2.StartDT))AS FLOAT)/365))
WHEN TestModelInputs.MYear <= YEAR(TestModelInputs2.PeakDT) THEN TestModelInputs2.Peak
ELSE TestModelInputs2.Peak
END AS Projection

FROM TestModelInputs
INNER JOIN TestModelInputs2 ON TestModelInputs.FieldID = TestModelInputs2.FieldID


Query
SELECT T1.FieldID
, T1.MYear
, OilProjection
, (select sum(OilProjection * .365) from TestModelProjections where MYear <= T1.MYear) 'RunningTotal'
FROM         TestModelProjections T1 INNER JOIN
                      TestModelInputs2 ON T1.FieldID = TestModelInputs2.FieldID

This is the current result set

FieldID     MYear       Projection (000s)     RunningTotal
----------- ----------- ---------------------- ----------------------
1642        2005        0                               0
1642        2006        0                               0
1642        2007        0                               0
1642        2008        96.65                        35.28
1642        2009        210                           111.93
1642        2010        210                           188.58
1642        2011        210                           265.23
1642        2012        210                           341.88
1642        2013        210                           418.53
1642        2014        210                           495.18
1642        2015        210                           571.83




What I Want is for the decline to start after the running total has reached 50% of the reserves (250 in this case) and then decline out at a rate of 20% (ie. Previous years number * (1  0.2) ):

FieldID     MYear       Projection (000s)     RunningTotal (Million)
----------- ----------- ---------------------- ----------------------
1642        2005        0                                 0
1642        2006        0                                 0
1642        2007        0                                 0
1642        2008        96.655                        35.28
1642        2009        210                            111.93
1642        2010        210                            188.58
1642        2011        210                            265.23
1642        2012        168                            326.55
1642        2013        134.4                         375.61
1642        2014        107.52                       414.85
1642        2015        86.016                       446.25
[+][-]11/04/09 07:17 PM, ID: 25746483Expert Comment

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[+][-]11/04/09 07:32 PM, ID: 25746535Expert Comment

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[+][-]11/04/09 07:35 PM, ID: 25746546Author Comment

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[+][-]11/04/09 07:44 PM, ID: 25746584Expert Comment

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[+][-]11/04/09 08:01 PM, ID: 25746669Author Comment

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[+][-]11/04/09 09:25 PM, ID: 25746982Accepted Solution

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About this solution

Zones: MS SQL Server, SQL Server 2005
Tags: SQL Server 2005
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Solution Provided By: rob_farley
Participating Experts: 1
Solution Grade: A
 
 
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