How to split numbers in a string with a single SQL on 10.2?

Question

Is it possible to to below action with a single SQL on 10.2?
input > '3abc4de5f'
output > '3,abc,4,de,5,f'
Thank you.

Answer 1

It might be a NLS issue. Follow the suggestion of Karthick_Arp and use [[:alpha:]] instead:Is is
SQL> with t as (select 'a' l from dual union all
           select 'b' l from dual union all
           select 'A' l from dual)
select * from t
order by nlssort(l, 'NLS_SORT=GERMAN')
L
a
A
b
3 rows selected.
SQL> with t as (select 'a' l from dual union all
           select 'b' l from dual union all
           select 'A' l from dual)
select * from t
order by nlssort(l, 'NLS_SORT=DANISH')
L
A
a
b
3 rows selected.You could also do a case insensitive match (As in TXT3)
SQL> alter session set NLS_SORT=DANISH
Session altered.
SQL> with t as (select 'aADSFF3332abc4342de5Df' txt from dual
           union all
           select '3abc4de5f' from dual)
select txt, regexp_replace(txt, '([0-9]{1,}|[a-z]{1,})', '\1,') txt2
           ,regexp_replace(txt, '([0-9]{1,}|[a-z]{1,})', '\1,', 1, 0, 'i') txt3
  from t
TXT                            TXT2                           TXT3                         
aADSFF3332abc4342de5Df         a,ADSFF,3332,abc,4342,de,5,Df, aADSFF,3332,abc,4342,de,5,Df,
3abc4de5f                      3,abc,4,de,5,f,                3,abc,4,de,5,f,              
2 rows selected.
SQL> alter session set NLS_SORT=GERMAN
Session altered.
SQL> with t as (select 'aADSFF3332abc4342de5Df' txt from dual
           union all
           select '3abc4de5f' from dual)
select txt, regexp_replace(txt, '([0-9]{1,}|[a-z]{1,})', '\1,') txt2
  from t
TXT                            TXT2                         
aADSFF3332abc4342de5Df         aADSFF,3332,abc,4342,de,5,Df,
3abc4de5f                      3,abc,4,de,5,f,              
2 rows selected.Regards
Peter