Altiris report - Computer type query

Hi Everyone,

I would like your help, I want creat a report that show computer by Computer Type, I tried the following query:

Select DISTINCT

c.[Name],

Vct.[Name] AS 'Computer Type'

FROM

vCMDBComputer c

left JOIN ResourceAssociation raloc on raLoc.ParentResourceGuid = c.Guid

left JOIN vComputerType vct on vct._ResourceGuid = raLoc.ChildResourceGuid

where

c.[Name] LIKE 'em01mq04'

But the result is duplicated...

What I did wrong?

Thank you.