Suppressing multiple values in Microsoft SQL

Question

Below is an example of code that I have, and I would like it to print a user's account number along with a each procedure number and the sequence number that shows up for that appointment, for example:

acc num        proc num  Seq num
--------------------------------
Vxxxxxxxxx26    44.42   1
Vxxxxxxxxx26    57.94   2
Vxxxxxxxxx26    57.32   3
Vxxxxxxxxx26    38.93   4

But instead it prints many duplicates of the same thing for the same date and time, for example:

acc num        proc num  Seq num
--------------------------------
Vxxxxxxxxx26    44.42   1
Vxxxxxxxxx26    57.94   2
Vxxxxxxxxx26    57.32   3
Vxxxxxxxxx26    38.93   4
Vxxxxxxxxx26    44.42   1
Vxxxxxxxxx26    57.94   2
Vxxxxxxxxx26    57.32   3
Vxxxxxxxxx26    38.93   4
Vxxxxxxxxx26    44.42   1
Vxxxxxxxxx26    57.94   2
Vxxxxxxxxx26    57.32   3
Vxxxxxxxxx26    38.93   4

How can I limit it so it only shows 1 set of values rather than 5 set of values?

BTW I am a newbie to Stack Overflow and SQL so please keep that in mind when reviewing. Thank you.

NOTE: It seems as though it is the OeOrders table. When this is not JOINED it has the appropriate rows, when it is JOINED it expands with all the multiple rows.

CODE

DECLARE
    @StartDate DateTime,
    @EndDate DateTime
    SET @StartDate = '10/28/2013 00:00:000'
    SET @EndDate = '11/28/2013 23:59:000'
    SET @RecordType = '6'

SELECT 
    ,AbstractData.AccountNumber AS AcctNum_2
    ,'I9:'+AbsDrgProcedures.DrgProcedure AS ProcCode_3
    ,AbsDrgProcedures.ProcedureSeqID AS Priority_4

FROM AbstractData
    LEFT JOIN AbsDrgProcedures 
    ON (AbsDrgProcedures.VisitID = AbstractData.VisitID) AND AbsDrgProcedures.VisitID IS NOT NULL
    LEFT JOIN OeOrders 
    ON (OeOrders.VisitID = AbstractData.VisitID) 

WHERE 
    AbstractData.PtStatus <> 'REF'
    AND OeOrders.ServiceDateTime BETWEEN @StartDate and @EndDate

Answer 1

Select distinct results - SELECT DISTINCT rather than SELECT.