Display the columns related to redaction in Oracle 12c

SELECT object_owner,
       object_name,
       column_name,
       function_type,
       function_parameters,
       regexp_pattern,
       regexp_replace_string,
       regexp_position,
       regexp_occurrence,
       regexp_match_parameter,
       column_description
FROM   redaction_columns
WHERE  object_owner = DECODE(UPPER('&1'), 'ALL', object_owner, UPPER('&1'))
AND    object_name  = DECODE(UPPER('&2'), 'ALL', object_name, UPPER('&2'))
ORDER BY 1, 2, 3;