How to count the number of occurrences of a character in an Oracle varchar value?

Question

How can I count number of occurrences of the character - in a varchar2 string?

Example:

select XXX(\'123-345-566\', \'-\') from dual;
--         


        

Answer 1

I thought of

 SELECT LENGTH('123-345-566') - LENGTH(REPLACE('123-345-566', '-', '')) FROM DUAL;