one of the column in my table contains the data like
SAL
----
1000
1000
2000
3000
3000
So my requirement is i want output like
SAL
---
1000
2000
3000
it mean i want to delete duplicate rows in the table
permanently and i want output in the above formatow should u
write query?
Answers were Sorted based on User's Feedback
Answer / guest
SQL> DELETE FROM <TABLE_NAME>
WHERE (ROWID,SAL) NOT IN
(SELECT MIN(ROWID),SAL FROM <TABLE_NAME>
GROUP BY SAL);
Is This Answer Correct ? | 13 Yes | 5 No |
Answer / yaswanth
select salary from emp where rowid NOT IN(select max(rowid) from emp GROUP BY salary);
Is This Answer Correct ? | 14 Yes | 7 No |
Answer / amit
SQL>DELETE FROM <TABLE NAME>
WHERE ROWID NOT IN (SELECT MIN(ROWID) FROM <TABLE NAME>
GROUP BY SAL);
Is This Answer Correct ? | 9 Yes | 3 No |
Answer / sarthak mohanty
DELETE
from <table_name> a
where a.rowid > ANY(select b.rowid
from <table_name> b
where a.salary=b.salary);
Is This Answer Correct ? | 6 Yes | 0 No |
Answer / bibhudatta panda
DELETE FROM TABLENAME
WHERE ROWID NOT IN(
SELECT MAX(ROWID)
FROM TABLENAME
GROUP BY Sal
)
Is This Answer Correct ? | 4 Yes | 1 No |
Answer / abin
Select sal from (Select *,ROW_NUMBER() over (partition by
sal order by sal asc)num from emp) a
Where num=1
Is This Answer Correct ? | 2 Yes | 0 No |
Answer / guest
http://www.youtube.com/watch?v=3bCgGrEz8Kw&NR=1
bug
http://www.youtube.com/watch?v=zZdQ6HXXDiE&feature=related
levels of testing
http://www.youtube.com/watch?v=osgaXV4qtZg
software testing
Is This Answer Correct ? | 1 Yes | 1 No |
Answer / suneelkumar
delete from emp x where rowid>(select rowid from emp y where
x.sal=y.sal)
Is This Answer Correct ? | 0 Yes | 0 No |
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