Default Column value in case of null

Question

Hi friends,
I am new to dimensional query and need help to set the default value for columns. The query is mentioned below. I need to include the default values when the data for the column is null. How to implement this?
Query:
SELECT distinct s_id,SName, ENV_TYPE, h_id
          FROM (
          select s_id,s_code,s_value from table
          where s_id = 6070
          MODEL
          IGNORE NAV
          PARTITION BY
          (s_id)
          DIMENSION BY
          (s_code)
          MEASURES
          (s_value,CAST( '' AS VARCHAR2(256) ) AS SName, CAST( '' AS VARCHAR2(256) ) AS ENV_TYPE, 0 AS h_id )
          RULES UPDATE
SName[ANY] = service_value['SName'],
ENV_TYPE[ANY] = s_value['ENV_TYPE'],
h_id[ANY] = s_value['h_id']
Output:
S_id SName ENV_TYPE h_id
6070 null null null

Answer 1

I made two changes in the query :
1) Replace service_value to s_value
2) Added a closing ")" for the update
And after making the changes when I ran the query it worked with NVL
create table t_test_data
s_id number,
s_code varchar2(30) ,
s_value varchar2(30)
create table succeeded.
insert into t_test_data
select 6070,null,null from dual union all
select 6080,null,null from dual;
2 rows inserted
SELECT DISTINCT
    s_id,
    nvl(SName,'Some name') as SName,
    nvl(ENV_TYPE,' Some env') as ENV_TYPE,
    nvl(h_id,0) as h_id
FROM
        SELECT
            s_id,
            s_code,
            s_value
        FROM
            t_test_data
        WHERE
            s_id = 6070
    MODEL IGNORE NAV PARTITION BY (s_id) DIMENSION BY (s_code) MEASURES (
    s_value,CAST( '' AS VARCHAR2(256) ) AS SName, CAST( '' AS VARCHAR2(256) ) AS ENV_TYPE, 0 AS h_id ) RULES
UPDATE
    ( SName[ANY] = s_value['SName'], ENV_TYPE[ANY] = s_value['ENV_TYPE'],
    h_id[ANY]    = s_value['h_id'] );
S_ID          SNAME                ENV_TYPE            H_ID                  
6070          Some name            Some env            0