Capturing One Record In A Series

My question is this.....


I inherited an application that creates reports and each report pulls data from a SQL database. The reports are for each School district in the state and pull the number of students that have Asthma conditions, simple enough. However what happens is this... Each initial report is saved with a code of 2 for initial. As long as there aren't and revisions I am fine. If a school makes a revision (Code of 4) I now have two records in the database and I need the one from the revision (Code 4). Not every record will have a revision, and sometimes there may be multiple revisions. How can I code my stored procedure to go through the database and check to see if there is a code of 4 or multiple codes of 4 and if so grab that data, if not grab the initial data? Below is the code currently being used. Frank


CREATE PROCEDURE dbo.usp_Rpt_Asthma
(@WhereClause VARCHAR(400))
AS
SET NOCOUNT ON
DECLARE @WhereClause_STR VARCHAR(400)
SELECT @WhereClause_STR = CONVERT(VARCHAR(400),@WhereClause)
Exec ('Select D.Code, C.Code, InstCtgyFK, C.[Description] as County, D.DistrictName, A.InstName,
Sum(K4+K+G1+G2+G3+G4+G5+G6+G7+G8+G9+G10+G11+G12+UnGrSpEd+Other) as TotalADM, Asthma, Asthmatics
FROM dbo.tblAnnualReports AR
Inner Join dbo.tblAddresses A on A.InstitutionFK = AR.InstitutionFK
Inner Join [DHHBGSQLPROD1].[Shared Common Data].[dbo].[tblInstitution] I on A.InstitutionFK = InstitutionPK
Inner Join [DHHBGSQLPROD1].[Shared Common Data].[dbo].[tblActiveInstCtgy] AIC on A.InstitutionFK = AIC.InstitutionFK
Inner Join [DHHBGSQLPROD1].[Shared Common Data].[dbo].[tblCounties (PA Standard)] C on C.Code = I.DOHCountyCode
Inner Join [DHHBGSQLPROD1].[Shared Common Data].[dbo].[tblCommunityHealthDistricts] D on D.Code = C.CommunityHealthDistrictCode
Inner Join dbo.tblAverageDailyMemberships ADM on AR.[ID] = ADM.AnnualReportID
Inner Join dbo.tblChronicConditionsInjuries CC on AR.[ID] = CC.AnnualReportID
Inner Join dbo.tblMedicationAdministration MA on AR.[ID] = MA.AnnualReportID
Where (A.StartDate <= AR.DOHDateProcessed and (A.EndDate >= AR.DOHDateProcessed or A.EndDate is Null or A.EndDate = ''1/1/1900''))
and ReportTypeCode = 2
and IndOrdStandOrd = ''I''
'
+ @WhereClause_STR +
'
Group By D.Code, C.Code, InstCtgyFK, C.[Description], D.DistrictName, A.InstName,
Asthma, Asthmatics
')
GO