Doh .... as the man would say.
Absolutely, how can you have a rownum > or directly equal to a number other
than 1 when by the very nature that can never happen.
If you say = 5 or > , it will never happen without the rest of the data
there to increment the rownum to 5.
-----Original Message-----
Sent: Wednesday, July 11, 2001 5:13 PM
To: Multiple recipients of list ORACLE-L
Rao,
This snippet from The Fine Manual explains it all... "= 5" or "> 1" will
return 0 rows:
--------------
Conditions testing for ROWNUM values greater than a positive integer are
always false. For example, this query returns no rows:
SELECT * FROM emp
WHERE ROWNUM > 1;
The first row fetched is assigned a ROWNUM of 1 and makes the condition
false. The second row to be fetched is now the first row and is also
assigned a ROWNUM of 1 and makes the condition false. All rows subsequently
fail to satisfy the condition, so no rows are returned.
--------------
Jack
--------------------------------
Jack C. Applewhite
Database Administrator/Developer
OCP Oracle8 DBA
iNetProfit, Inc.
Austin, Texas
www.iNetProfit.com
[EMAIL PROTECTED]
(512)327-9068
-----Original Message-----
Maheswara
Sent: Wednesday, July 11, 2001 4:44 PM
To: Multiple recipients of list ORACLE-L
List,
Following are two SQL statements. The first SQL statement works OK (where
ROWNUM < 5 is used). The second SQL statement does not return any rows
(where ROWNUM = 5 is used). This table contains 200 records.
First SQL statement
-------------------
SELECT * FROM
(SELECT PROCESSED_DATE
FROM TRADES WHERE PROCESSED_STATUS = 0
ORDER BY ENTRY_DATE)
WHERE ROWNUM < 5
Second SQL statement
--------------------
SELECT * FROM
(SELECT PROCESSED_DATE
FROM TRADES WHERE PROCESSED_STATUS = 0
ORDER BY ENTRY_DATE)
WHERE ROWNUM = 5
---------------
Question:
Why second SQL statement does not work?
I would be thankful for the clarification.
Thanks,
Rao
[EMAIL PROTECTED]
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