How to avoid duplicates in append query

[wind54surfer]

Hi all,
I have an append query that I run daily and want to append only records with
different OrderID.
------------------------------------------------------------------------
INSERT INTO tblConfirmSchedule ( OrderID, JobCode, JobDate, Status, [Home#],
[Work #], Ext, [Other#], Ext2 )
SELECT Orders.OrderID, [Schedule Info].JobCode, JobSchedule.JobDate,
JobSchedule.Status, CustNew.[Home#], CustNew.[Work #], CustNew.Ext,
CustNew.[Other#], CustNew.Ext2
FROM (CustNew INNER JOIN Orders ON CustNew.CustomerID=Orders.CustomerID)
INNER JOIN ([Schedule Info] INNER JOIN JobSchedule ON [Schedule
Info].JobCode=JobSchedule.Scheduled) ON Orders.OrderID=[Schedule Info].OrderID
WHERE (((JobSchedule.JobDate)>Now()+3) And
((JobSchedule.Status)="Scheduled"));
--------------------------------------------------------------------------

Any ideas?
Thanks in advance,
Emilio

 

[MStef]

Hello Emilio!
The field "OrderID" put as primary key, or index Unique = Yes.