Sccm reporting query to include System OU.

I have a query to measure compliance that works as expected:

SELECT  ALL
dbo.v_R_System.Name0 AS [System Name],
dbo.v_R_System.User_Name0 AS [Last LoggedOn User],
dbo.v_R_System.Last_Logon_TimeStamp0 AS [Last Logon Time],
dbo.v_GS_OPERATING_SYSTEM.LastBootUpTime0 AS [Last BootUp Time],
dbo.v_CH_ClientSummary.LastHW AS [Last Hardware Scan],
dbo.v_R_System.Operating_System_Name_and0 AS [Operating System]
FROM dbo.v_R_System INNER JOIN dbo.vdcmdeploymentsystemdetails ON
	dbo.vdcmdeploymentsystemdetails.ResourceID = dbo.v_R_System.ResourceID
INNER JOIN dbo.v_GS_OPERATING_SYSTEM ON
	dbo.v_GS_OPERATING_SYSTEM.ResourceID = dbo.v_R_System.ResourceID
INNER JOIN dbo.v_CH_ClientSummary ON
	dbo.v_CH_ClientSummary.ResourceID = dbo.v_R_System.ResourceID
where ((dbo.vdcmdeploymentsystemdetails.BaselineID = N'ScopeId_C5AF6DAF-5E35-4329-A1E7-1DA8052F78CB/Baseline_2c49fedd-e167-401c-a2c3-c63d68af572b' AND dbo.vdcmdeploymentsystemdetails.CollectionID = N'S02002B8') AND dbo.vdcmdeploymentsystemdetails.ComplianceState = 3)

I would like to also grab system OUs but when I just add

dbo.v_RA_System_SystemOUName.System_OU_Name0 AS [System OU]

INNER JOIN dbo.v_RA_System_SystemOUName on
	dbo.v_RA_System_SystemOUName.ResourceID = dbo.v_R_System.ResourceID

I get multiple OU entries for all upplevel OUs that the machines are a member of.  I have tried these methods http://blogs.msdn.com/b/alex_semi/archive/2009/07/29/direct-ou-in-sccm.aspx and http://blogs.msdn.com/b/alex_semi/archive/2009/07/29/direct-ou-in-sccm.aspx

SELECT ResourceID, MAX(System_OU_Name0)
FROM [database].dbo.v_RA_System_SystemOUName
GROUP BY ResourceID

which work fine by themselves.  How can I add it to my original query though?

When I try

Max(dbo.v_RA_System_SystemOUName.System_OU_Name0) AS [System OU]

and add

GROUP BY dbo.v_R_System.ResourceID

I get an error :

An error occurred while executing the query.
Column 'dbo.v_R_System.Name0' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.

Any idea on how to include it correctly in the first query