How to query for unacceptable characters

Hi there. I can query for acceptable characters but would like to query for unacceptable characters. Please see the below thread. thanks in advance!
How to find Special Characters in a table ?
~Darby

Sorry, missed it in the other post (already saturday here). So without using regular expressions. I'm a little confused now I must say.
You want to search for unacceptable characters (I assume those characters are known this time):
length(the_column) - length(replace(translate(the_column,'UNACEPTBL','*'),'*','')) > 0
Regards
Etbin

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