Regula expression question

Question

If I want to replace everything in a string that is between two spaces. I can do:
There is a space before the d and after the f.
  1  select regexp_replace('abc def ',' [^ ]+ ','!')
  2* from dual
SQL> /
REGE
!defHow do replace only digits, [:digit:] 012345789 between 2 spaces?
Edited by: Guess2 on Mar 16, 2012 12:48 PM

Answer 1

Hi Guess2,
Perhaps you just want:
select replace('abc def ',' ')
from dual;See this:
SQL> select replace('abc def ',' ') as repl
  2   from dual;
REPL
abcdef
SQL>So, as you see, it's not necessary, in the case you have, to use regexp_replace. But, if you want absolutely to use regexp_replace, you can issue:
SQL>  select regexp_replace('abc   def ',' ') as repl
  2   from dual;
REPL
abcdef
SQL>Is abcde the output you wanted from your initial string?