delete duplicate rows

hi there ,
how can i delete duplicate rows
dmt_campaign_id

1008
1008
1008
1008
1007
1006
1005
1005
1008
1002
1006

i want it to be

1008
1007
1006
1005
1002
nav29Asked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Shanmuga SundaramDirector of Software EngineeringCommented:
0
openshacCommented:
Microsoft have got a comprehensive article here:
http://support.microsoft.com/kb/139444
0
Kent OlsenData Warehouse Architect / DBACommented:
Hi nav,

If you have the OLAP extensions available, this is a piece of cake. If not, it's still workable, just a bit wordier.

The code below is a complete test example. Just modify the DELETE statement to match your table.



Kent

create table t (v integer);
insert into t values (1);
insert into t values (1);
insert into t values (1);
insert into t values (1);
insert into t values (1);
select * from t;
delete from (select v, row_number () over (partition by v) as c from t) as a
where c > 1;
select * from t;

Open in new window

0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
DB2

From novice to tech pro — start learning today.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.