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write sub query for eliminating duplicate rows using
analytical function?

Question Posted / devi

Answers were Sorted based on User's Feedback



write sub query for eliminating duplicate rows using analytical function?..

Answer / korimantu

delete from table name where rowid not in(select max(rowid)
from group by last_name);

or

delete from table name where rowid>(select min(rowid) from
where a.last_name=b.last_name);

Is This Answer Correct ?    4 Yes 2 No

write sub query for eliminating duplicate rows using analytical function?..

Answer / vyshak

delete from table where rowid not in (select max(rowid) from
table group by all column names);

or

delete (dense_rank() over(partition by all column names))dn
from table where dn>2;

Is This Answer Correct ?    4 Yes 3 No

write sub query for eliminating duplicate rows using analytical function?..

Answer / guest

select distinct

Is This Answer Correct ?    1 Yes 1 No

Post New Answer

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