rewrite group by query

From: elain he <elainhe_at_hotmail.com>
Date: Mon, 05 Jan 2004 07:24:25 -0800
Message-ID: <F001.005DBB74.20040105072425@fatcity.com>

Hi,
Does anyone have a better way of rewriting the following query? I'm trying to avoid querying the table, tab1 twice.

select a, b from tab1
where a in (select a from tab1 group by a having count(*)=1);

Thanks.

elain

---

Make your home warm and cozy this winter with tips from MSN House & Home. http://special.msn.com/home/warmhome.armx

--

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

Author: elain he
  INET: elainhe_at_hotmail.com

Fat City Network Services    -- 858-538-5051 http://www.fatcity.com
San Diego, California        -- Mailing list and web hosting services
---------------------------------------------------------------------

To REMOVE yourself from this mailing list, send an E-Mail message to: ListGuru_at_fatcity.com (note EXACT spelling of 'ListGuru') and in the message BODY, include a line containing: UNSUB ORACLE-L (or the name of mailing list you want to be removed from). You may also send the HELP command for other information (like subscribing). Received on Mon Jan 05 2004 - 09:24:25 CST