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Insert into clientfile
select client2, key2, fld3, fld4, ....
from clientfile A
where clientid = client1
and not exists( select * from clientfile B
where b.clientid = client2
and b.key2 = a.key2
)

HTH,
Charles

On Fri, Nov 12, 2010 at 9:15 AM, David FOXWELL <David.FOXWELL@xxxxxxxxx> wrote:

Can I copy all of client1's records to a new client client2 with SQL?
Ie, copy all the data but with a different clientId supplied by my program.

Something like :

Insert into clientfile
select *from clientfile where clientid = client1 ( but replacing client1 with client2)

How should I protect against duplicate records? Normally the client2 will never exist at this time but you never know!

Thanks.
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