Group By for Combobox Filter Sort - sql

Question

I've created a basic Combobox Filter Sort that sorts through Company Regions for my company (Acronyns mostly) we refer to these as AOR's or Area of Reference. After defining your AOR, it limits the next combo box to show only Countries in that specific AOR, hense the Filter Sort. But, my problem is - when it displays the countries after selecting an AOR - It displays ALL RECORDS in that specific country, instead of just 1 country listing.
Basically, It isn't grouping my countries - and when I select "Totals" which normally gives me only unique results, this doesnt work.
My question, How can I re-write this code to include a Group By?
My Code:
Private Sub cboRegion_AfterUpdate()
' Region -> Country
Dim sManagerSource As String
sManagerSource = "SELECT [FullEmail].[AORID], [FullEmail].[ID], [FullEmail].[Country] " & _
"FROM FullEmail " & _
"WHERE [AORID] = " & Me.cboRegion.Value
Me.cboCountry.RowSource = sManagerSource
Me.cboCountry.Requery
End Sub
My SQL statement looks like this (It's got Group By in it, but it doesn't GROUP)
SELECT FullEmail.AORID, FullEmail.ID, FullEmail.Country
FROM FullEmail
GROUP BY FullEmail.AORID, FullEmail.ID, FullEmail.Country
HAVING (((FullEmail.AORID)=1));
Thanks in advance for reading through!

Answer 1

The previous answer is correct, except with a having clause you need to use aggregates... so just use where.
SELECT Country
FROM FullEmail
WHERE AORID=1
GROUP BY Country;
That should fix you up. When you use HAVING it looks at what you've selected, since you didn't select AORID, it didn't know what to do.