RE: SQL question

I think you need to put "distinct" before "least(a, b) a,"

Guang

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

From: oracle-l-bounce_at_freelists.org
[mailto:oracle-l-bounce_at_freelists.org]On Behalf Of Stephane Faroult Sent: Friday, December 03, 2004 12:10 PM To: oracle-l_at_freelists.org; geraldine_2_at_comcast.net Subject: Re: SQL question

select least(a, b) a,

           greatest(a, b) b

from my_table

where least(a, b) <= greatest(a, b)

Assuming of course that the table isn't in the multi-million range.

Regards,

Stephane Faroult

RoughSea Ltd
http://www.roughsea.com

On Fri, 03 Dec 2004 16:37 , geraldine_2_at_comcast.net sent:

Hi,
I have the following table below

SQL> select * FRom mytable;
A B
---------- ----------

1 2
3 4
2 1
5 6
4 3

5 rows selected.

and I like to get the following output:

A B
---------- ----------

1 2
3 4
5 6

basically (1,2) is the same as (2,1) and I would just like to display any of those combination just once.

Not sure how I can write a SQL to extract the data. Can someone help.

TIA. Geraldine
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http://www.freelists.org/webpage/oracle-l Received on Fri Dec 03 2004 - 11:05:38 CST