G-2140: Never initialize variables with NULL.

Minor

Maintainability

Reason

Variables are initialized to NULL by default.

Example (bad)

DECLARE
   l_note big_string_type := NULL;
BEGIN
   sys.dbms_output.put_line(l_note);
END;
/

Example (good)

DECLARE
   l_note big_string_type;
BEGIN
   sys.dbms_output.put_line(l_note);
END;
/