I'm currently looking for an example on how to code this, but maybe I
can take a shortcut and someone will do it for me. LOL

Anyhow, I need a regular expression to filter out any values with
special characters: !#$%^&*()+=<>,?"':;{}[]|\/

So far I can get the first character to be a valid one:

regexp_like (c1, '(^[A-Z0-9_-])');

I mean, this is really for email address validation. So, there can be
no special characters in it.......I'm still trying things, but, maybe
someone will just give the answer.

Thanks all!