RE: Top-N records.

From: Sachin Puri <sachin_at_siworldwide.com>
Date: Mon, 15 Jan 2001 12:19:17 +0530
Message-Id: <10741.126637@fatcity.com>

well ALDI if you are using Oracle 8i then i have one more simpler query for you to fetch top 20 records.

SELECT salary FROM (SELECT salary FROM EMPlOYEE ORDER BY salary DESC) WHERE ROWNUM < 21;

-----Original Message-----
From: Sachin Puri [mailto:sachin_at_siworldwide.com] Sent: Monday, January 15, 2001 9:30 AM
To: Multiple recipients of list ORACLE-L Subject: RE: Top-N records.

Aldi
I just saw this topic today. I also saw comments of various dbas regarding your query but was
not impressed by anyone.
You can successfully use this query and i bet this will not give you any problems:

select salary from employee x where 20 > (select count(*) from employee y where y.salary > x.salary) order by x.salary desc;

However if the u want to have top 20 distinct salaries then add distinct clause.

Sachin Puri
Oracle Development and Administration
Solutions Infosystems

-----Original Message-----
Sent: Saturday, January 13, 2001 2:54 AM To: Multiple recipients of list ORACLE-L

Hi List,

This question has been discussed so many times. But I dont have the trick now.
Could you please send me the trick to select top-20 salary of scott.employee table ?
Thanks.

Aldi

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Author: Sachin Puri
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