Re: order by

From: Gudmundur Josepsson <gbj_at_index.is>
Date: Sat, 27 Dec 2003 08:59:24 -0800
Message-ID: <F001.005DB20A.20031227085924@fatcity.com>

Because both expressions evaluate to 1 and cause the output to be sorted by the first column? Oracle seems to ignore the values after the decimal point.

SQL> select a, c from x
2 where rownum < 10
3 order by 1.7;

         A C
---------- -
      4861 Y
      4862 N
      4863 Y
      4864 N
      4865 Y
      4866 N
      4867 Y
      4868 N
      4869 Y

9 rows selected.

SQL> select a, c from x
2 where rownum < 10
3 order by 2.7;

         A C
---------- -
      4862 N
      4864 N
      4868 N
      4866 N
      4861 Y
      4869 Y
      4867 Y
      4865 Y
      4863 Y

9 rows selected.

Gudmundur

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

From: <bulbultyagi@now-india.net.in>

To: "Multiple recipients of list ORACLE-L" <ORACLE-L@fatcity.com>

Sent: Saturday, December 27, 2003 4:14 PM

Subject: order by

> 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
>
>
> --
> Please see the official ORACLE-L FAQ: http://www.orafaq.net
> --
> Author: <bulbultyagi@now-india.net.in
> INET: bulbultyagi@now-india.net.in
>
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-- 
Please see the official ORACLE-L FAQ: http://www.orafaq.net
-- 
Author: Gudmundur Josepsson
  INET: gbj_at_index.is

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Received on Sat Dec 27 2003 - 10:59:24 CST