How to receive a valid value instead of " null " value

Question

Hi people,
I'm making this SELECT statement:
SELECT I.id_cd, I.cantor_cd, I.titulo_cd, I.videoclip_cd, SUM(T.vezes_cd) as
VEZES, MAX(T.dt_cd) as DATA from t_indicetmp I LEFT JOIN t_tocado T ON
I.id_cd=T.id_cd
GROUP BY I.id_cd, I.cantor_cd, I.titulo_cd, I.videoclip_cd ORDER BY
SUM(T.vezes_cd) DESC
So, I got this result
id_cd.........cantor_cd.........titulo_cd.........videoclip_cd.........vezes.........data
3...............cantor1.............titulo1............S........................9................09/03
1...............cantor2.............titulo2............N........................8................09/03
2...............cantor5.............titulo5............n........................<null>.........<null>
The question is, is there a way to receive for example "0" instead of "<null>" value?
It's happening because there's no registry for the id_cd=2 in the "t_tocado" table.
thank's very much,

Answer 1

The question is, is there a way to receive for example "0" instead of "<null>" value?1) NVL function
http://download-uk.oracle.com/docs/cd/B10501_01/server.920/a96540/functions88a.htm#91645
2) DECODE function
http://download-uk.oracle.com/docs/cd/B10501_01/server.920/a96540/functions33a.htm#1017439
3) CASE statement
http://download-uk.oracle.com/docs/cd/B10501_01/server.920/a96540/expressions5a.htm#1033394
Rgds.