How Oracle can handle this?

Question

It is on both Prod and Dev server, 10 R2 with BAAN
Baan application defined the table as
SQL> desc ttphrs900201
Name Null? Type
T$YEAR NOT NULL NUMBER
T$PERI NOT NULL NUMBER
T$EMNO NOT NULL CHAR(6)
T$SERC NOT NULL NUMBER
T$WGCO NOT NULL CHAR(3)
T$NHRS$1 NOT NULL NUMBER
T$NHRS$2 NOT NULL NUMBER
T$NHRS$3 NOT NULL NUMBER
T$NHRS$4 NOT NULL NUMBER
T$NHRS$5 NOT NULL NUMBER
T$NHRS$6 NOT NULL NUMBER
T$NHRS$7 NOT NULL NUMBER
T$CPRJ NOT NULL CHAR(9)
T$CSPA NOT NULL CHAR(8)
T$CACT NOT NULL CHAR(8)
T$CCUN NOT NULL CHAR(8)
T$CSTL NOT NULL CHAR(4)
T$CCCO NOT NULL CHAR(8)
T$INVO NOT NULL NUMBER
T$DESC NOT NULL CHAR(52)
T$ISTA NOT NULL NUMBER
T$IDAT NOT NULL DATE
T$TRDT NOT NULL DATE
T$FIEL NOT NULL CHAR(30)
T$ERMS NOT NULL CHAR(100)
T$REFCNTD NOT NULL NUMBER
T$REFCNTU NOT NULL NUMBER
but when I did this, there are null values for "NOT NULL" column
SQL> select distinct T$cstl, t$ccco, t$invo, t$ista, t$fiel
2 from ttphrs900201
3 where t$year = 2007
4 and t$emno = '255';
T$CS T$CCCO T$INVO T$ISTA T$FIEL
1103 1 2 Proyecto
1103 1 2
Is Oracle hidding some values? I am puzzled. Is a way to display the hidden value. BAAN was installed and designed by the contractors year ago.

Answer 1

Hi,
blank space values?, what's the result set for
select nvl2(T$FIEL,'not null','null'), count(*) from ttphrs900201 group by nvl2(T$FIEL,'not null','null');