Column is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.

I get an error on the following query.  What seems to be the problem?

DECLARE @fromdt AS datetime 
DECLARE @todt AS datetime
SET @fromdt = '7/1/2014'
SET @todt = '7/31/2014'
select * from tblOrgRegistrations as r 
JOIN tblOrgHours as h
 ON h.RegID = r.regid
 Where r.AgencyID = 74 And (h.ActivityDate >= @fromdt And h.ActivityDate <= @todt)
 Group By r.Agency

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Msg 8120, Level 16, State 1, Line 5
Column 'tblOrgRegistrations.RegID' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.

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al4629740Asked:
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Scott PletcherSenior DBACommented:
Remove the GROUP BY; I don't think you need it for this query.
Aneesh RetnakaranDatabase AdministratorCommented:
I think you put GROUP BY instead of ORDER BY

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al4629740Author Commented:
got it
al4629740Author Commented:
it was suppose to be order by
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Microsoft SQL Server

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