RE: Why this SQL does not work?

From: Kevin Lange <kgel_at_ppoone.com>
Date: Wed, 11 Jul 2001 13:42:04 -0700
Message-ID: <F001.00348006.20010711135944@fatcity.com>

First guess .... There are only 4 rows of data returned ??

Change the first query to

Where rownum <= 5

and let us know if you actually get that 5th row. If you did not then I would say that the queries are both working but there are only 4 rows that match the criteria.

-----Original Message-----
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
Maheswara.Rao_at_Sungardp3.com

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Author: Rao, Maheswara
INET: Maheswara.Rao_at_Sungardp3.com

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Author: Kevin Lange
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