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Re: A SQL Question

From: Wolfgang Breitling <breitliw_at_centrexcc.com>
Date: Thu, 13 Mar 2003 06:24:23 -0800
Message-ID: <F001.00568E6A.20030313062423@fatcity.com>


SQL> select A.c1, B.c2

   2 from (select col1 c1, rownum r from tbl order by col1) A    3 , (select col2 c2, rownum r from tbl order by col2) b    4 where a.r = b.r
   5 union all
   6 select B.c2, A.c1
   7 from (select col1 c1, rownum r from tbl order by col1) A    8 , (select col2 c2, rownum r from tbl order by col2) b    9 where a.r = b.r
  10 order by 1
  11 /

C C
- -
A B
B A
C D
D C
E F
F E
G H
H G

At 05:23 AM 3/13/2003 -0800, you wrote:
>Hi SQL Developers,
>
>I have a table as follows:
>
>Col1 Col2
>----------------
>A B
>C D
>E F
>G H
>B A
>E F
>C D
>H G
>
>With a PK on (Col1, Col2).
>
>How do I write a SQL script to get following result?
>
>Col1 Col2
>--------------------
>A B
>B A
>C D
>D C
>E F
>F E
>G H
>H G
>
>Thanks for your help.
>
>- Kirti

Wolfgang Breitling
Centrex Consulting Corporation
http://www.centrexcc.com


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-- 
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-- 
Author: Wolfgang Breitling
  INET: breitliw_at_centrexcc.com

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Received on Thu Mar 13 2003 - 08:24:23 CST

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