Dina exempel visar två olika format - ett för decimaltal och ett annat för heltal.
with sampledata as
(select 0.23 as rowa from dual
union all select 0.2350 from dual
union all select 0.1000 from dual
union all select 1.250 from dual
union all select 1200 from dual
union all select 1.300 from dual
)
select TO_CHAR(rowa
,CASE WHEN rowa = TRUNC(rowa)
then 'fm999999999999999990'
else 'fm999999999999999990D999'
end) as rowa
from sampledata;
ROWA
=====
0.23
0.235
0.1
1.25
1200
1.3