Comma separated Values have repeated values

Question

Find the Comma separated Values have repeated values
say
Str:= '123,abc,4566,4897996,46546546,ouiouiou,lhjlhlh,123,pojpoj,465465,123,poipoio,lahslka,'
The above sting has 123 repeated 3 times i need to make a note of it and intimate to user
can a Oracle Function does this?
Thanks!

Answer 1

This is one way of doing so, using Pure Oracle functions:
with dat as
  select ',' || '123,abc,4566,4897996,46546546,ouiouiou,lhjlhlh,123,pojpoj,465465,123,poipoio,lahslka,' col
    from dual
select col, length(translate(lower(replace(col, ',123,', '~')), '~abcdefghijklmnopqrstuvwxyz1234567890-=+_)(*&^%$#@!<>?":|}{,.', '~')) occurances
  from dat;
COL                                                                                                                                                                         OCCURANCES         
,123,abc,4566,4897996,46546546,ouiouiou,lhjlhlh,123,pojpoj,465465,123,poipoio,lahslka,           3