Better query

Question

Hi Folks,
suppose
col1 col2
1 2
3 4
5 6
7 8
9 10
how can i able to get the output like
result
1
2
3
4
5
6
7
8
9
10
please suggest me.with my knowledge i wrote like this.
Is there any easy(logic) way rather than this, to simplify query lines???
select 1col1 from dual union all
select 3 from dual union all
select 5 from dual union all
select 7 from dual union all
select 9 from dual
,t2 as
(select 2 col2 from dual union all
select 4 from dual union all
select 6 from dual union all
select 8 from dual union all
select 10 from dual
,t3 as(
select col1 result from t1
union all
select col2 result from t2)
select result from t3 order by result
thanks alot in advance
Edited by: newbie on Feb 20, 2011 9:50 PM

Answer 1

SELECT RESULT FROM
select col1 result from (select 1 col1 from dual union all
select 3 from dual union all
select 5 from dual union all
select 7 from dual union all
select 9 from dual
UNION ALL
select col2 result from (select 2 col2 from dual union all
select 4 from dual union all
select 6 from dual union all
SELECT 8 FROM DUAL UNION ALL
SELECT 10 FROM DUAL))
ORDER BY RESULTEdited by: Mahir M. Quluzade on Feb 21, 2011 9:59 AM