How to delete duplicate data from database

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Hi Friends

I want to delete duplicate data from database.

Pls tell me the query for it.

Posted 4-Mar-11 17:52pm

Updated 4-Mar-11 18:02pm

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Ramalinga Koushik · Answer 1 · 2011-03-04T18:03:00

Hope this[^] might help you.

Posted 4-Mar-11 18:03pm

Fun@learn · Answer 2 · 2011-03-04T21:31:00

"http://asktom.oracle.com/pls/apex/f?p=100:11:0::::P11_QUESTION_ID:15258974323143"

http://stackoverflow.com/questions/1173963/how-to-delete-duplicate-rows-with-sql[^]

Posted 4-Mar-11 21:31pm

Costica U · Answer 3 · 2011-03-05T01:10:00

Posted 5-Mar-11 1:10am

Kannan K R · Answer 4 · 2011-03-14T23:57:00

hope this will do...

with cte (c1, c2, rr)
as
(
select c1, c2, row_number() over(partition by c1,c2 order by c1,c2)[rr] from tbl1
)
delete from cte where rr>1

Posted 14-Mar-11 23:57pm