Select Statement to query smallest ID

<My_Table>
ID
PHOENIX005
PHOENIX006
PHOENIX007
PHOENIX008
TUCSON001
TUCSON002
TUCSON003
TEMPE010
TEMPE011
TEMPE002
CHANDLER030
CHANDLER031
CHANDLER032
Whats the best way to write a select statement that would only bring back the IDs with the smallest numerical value? I ultimately want my Query to display:
ID
PHOENIX005
TUCSON001
TEMPE010
CHANDLER030

Or may be like this...
SQL> ed
Wrote file afiedt.buf
1 with t as (
2             select 'PHOENIX005' id from dual union all
3             select 'PHOENIX006' from dual union all
4             select 'PHOENIX007' from dual union all
5             select 'PHOENIX008' from dual union all
6             select 'TUCSON001' from dual union all
7             select 'TUCSON002' from dual union all
8             select 'TUCSON003' from dual union all
9             select 'TEMPE010' from dual union all
10             select 'TEMPE011' from dual union all
11             select 'TEMPE002' from dual union all
12             select 'CHANDLER030' from dual union all
13             select 'CHANDLER031' from dual union all
14             select 'CHANDLER032' from dual
15            )
16 select *
17 from
18 (
19     select id, row_number()over(partition by trim(translate(id,'0123456789', rpad(' ',10))) order by
20     to_number(trim(translate(id,'ABCDEFGHIJKLMNOPQRSTUVWXYZ', rpad(' ',26)))) ) as rno
21     from t
22* ) where rno=1
SQL> /
ID                 RNO
CHANDLER030          1
PHOENIX005           1
TEMPE002             1
TUCSON001            1
SQL>

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>
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Edited by: Mahesh Reddy on Jan 21, 2009 2:32 PM

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Select Statement to query smallest ID

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