Santosh,
Good question. Actually these 2 are not related.
Rowid is an actual attribute assigned to each row of a table and is unique.
Rownum is logically assigned to rows returned in a query (nothing to do with the
table). It is assigned sequentially as rows are returned (meaning if you can't have a
rownum 2 until you've gotten a rownum 1).
Ex.
SQL> select rowid from dual;
ROWID
------------------
AAAACsAABAAAAGkAAA
SQL> select rownum from dual;
ROWNUM
----------
1
SQL> select rownum from dual where rownum=2;
no rows selected
SQL> select rownum from dual where rownum < 2;
ROWNUM
----------
1
Hope this was helpful,
Darrell
>>> [EMAIL PROTECTED] 03/19/03 03:43AM >>>
Hello list,
I wanted to know the concept of Rownum.. Is it similar to Row Id ?
Thanks and Regards,
Santosh
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