try this out
select a, b
from (select a from tab1 group by a having count(*)=1) alias
where a in alias;
regds,
Rohan
From: elain he [EMAIL PROTECTED]
Reply-To: [EMAIL PROTECTED]
To: Multiple recipients of list ORACLE-L [EMAIL PROTECTED]
Subject: rewrite group by query
Date: Mon, 05 Jan 2004 07
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
How about
select * from (select tab1.*, count(a) over(partition
by a) a_count from tab1) where a_count =1;
... would probably save you one pass over tab1.
Thanks,
Boris Dali.
--- elain he [EMAIL PROTECTED] wrote: Hi,
Does anyone have a better way of rewriting the
following query? I'm
