I have a table like this;

C:\Documents and Settings\busra>db2 select * from deneme1

IDS MTUTAR YTUTAR TTUTAR
----------- ----------------- ----------------- -----------------
1 100.00000 200.00000 300.00000
1 150.00000 - 50.00000
1 13.00000 133.00000 -
1 0.00000 13.00000 133.00000

4 record(s) selected.

and I want to sum these three columns and it looks like
C:\Documents and Settings\busra>db2 select mtutar+ytutar+ttutar from deneme1

1
-------------------
600.00000
-
-
146.00000

4 record(s) selected.

Hovewer I want to see;

1
-------------------
600.00000
200.00000
146.00000
146.00000

how can I do that?

I hope I can explain what I want

Assuming the - means null value.

select coalesce(MTUTAR,0) + coalesce(YTUTAR,0) + coalese(TTUTAR,0)
from deneme1