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Re: order by

From: Stephane Faroult <sfaroult_at_oriole.com>
Date: Sun, 28 Dec 2003 14:04:24 -0800
Message-ID: <F001.005DB2B2.20031228140424@fatcity.com>


bulbultyagi_at_now-india.net.in wrote:
>
> Hello list,
> Can someone please explain to me why the following order by clauses are
> valid and yield the same results :
>
> select empno, deptno from emp
> order by sqrt (1) ;
>
> and
>
> select empno, deptno from emp
> order by sqrt ( 3.14234 ) ;
>
> The docs say that in the order by clause you could specify only (a) column
> names or (b) positional parameters or (c) expressions involving the columns
>

A constant falls under the c) category. It's an expression, which involves anything you want. That said, I fail to see any practical use .

-- 
Regards,

Stephane Faroult
Oriole Software
-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Stephane Faroult
  INET: sfaroult_at_oriole.com

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Received on Sun Dec 28 2003 - 16:04:24 CST

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