I'm getting an error (ORA-00932: inconsistent datatypes: expected CHAR got NUMBER) from the formula below. Which part of this formula is expecting a CHAR?
CASE
WHEN "Enrolment - College"."F Language Preferred Measures"."Preferred Language French (#)" = 0 THEN 'All English'
WHEN "Enrolment - College"."F Language Preferred Measures"."Preferred Language English (#)" = 0 THEN 'All French'
ELSE "Enrolment - College"."F Language Preferred Measures"."Preferred Language French (#)" / "Enrolment - College"."F Language Preferred Measures"."Preferred Language English (#)"
END