RE: Sub-query in order by clause

From: Nicoll, Iain <IAIN.D.NICOLL_at_saic.com>
Date: Fri, 04 Apr 2003 10:48:37 -0800
Message-ID: <F001.0057AA17.20030404104837@fatcity.com>

Don't really know but couldn't it be useful if you had  

ORDER BY ( SELECT deptname FROM dept

            WHERE dept.deptno = emp.deptno)    

-----Original Message-----

Sent: 04 April 2003 17:34
To: Multiple recipients of list ORACLE-L

Hello list,  

In Oracle 9.2.0.1, you can now order by using a single-row subquery Here is an example:  

SELECT emp.deptno, empno, ename
FROM emp
ORDER BY ( SELECT deptno FROM dept

            WHERE dept.deptno = emp.deptno );  

The question I have is what is the usefulness of this? Under which circumstances
this can be used? Any ideas?  

-Ashish

OCP DBA  
--

Please see the official ORACLE-L FAQ: http://www.orafaq.net
--

Author: Nicoll, Iain
  INET: IAIN.D.NICOLL_at_saic.com

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