SELECT * FROM
(SELECT TITLE FROM MOVIE ORDER BY RANK DESC)
WHERE ROWNUM > 4;
when i run the above query .it produces output as NO ROWS
SELECTED.why ?plz any one help me
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Answer Posted / dinesh a.
you can't use rownum > 4 ( you can use only rownum <
clause). not in inner query or inline view even in normal
query.
select empno from emp where rownum > 5 ..
The output you will get NO ROWS always ....
so the magic is only order by clause asc or desc pls see
below
suppose we have a table x with one column col1 and values
are 1 to 10...
SELECT rownum,rank,col1 FROM
(SELECT rownum rank,col1 FROM x ORDER BY col1 desc)
WHERE ROWNUM <= 6 /* last six rows mean > 4 */
/
ROWNUM RANK COL1
------ ---------- ----------
1 10 10
2 9 9
3 8 8
4 7 7
5 6 6
6 5 5
1 SELECT rownum,rank,col1 FROM
2 (SELECT rownum rank,col1 FROM x ORDER BY col1 asc)
3* WHERE ROWNUM <= 4 /* first 4 rows */
SQL> /
ROWNUM RANK COL1
---------- ---------- ----------
1 1 1
2 2 2
3 3 3
4 4 4
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