RE: Insert of null-values with RPG, SQL or DFU

GokhanYe wrote:
>>I think, Allow null values (ALWNULL) option should be set to *USRCTL before 
>compile.

Yes, I set the option to *USRCTL.

John wrote:
>In SQL if I want to write a column as null,  I would manipulate the
>associated Indicator Variable (the 4 byte binary) to a value of -1 for the
>particular column I wanted Null.   You don't set the column itself to a
>"NULL" value.  As you correctly said,  the Null state is an attribute of a
>>column NOT a value of the column.

Yes, the Null state is an attribute, but I don't need to manipulate the
Indicator Variable. You can set a NULL value:
INSERT INTO customer (name, country,  telephon) VALUES ( 'Smith Robert', 
'Canada', NULL)
or
INSERT INTO customer (name, country) VALUES ( 'Smith Robert', 'Canada')
The result ist the same, because the column "telephon" is a null-capable field 
and won't be initialized with 
*ZEROS, it is unused .

But in RPG you write a record as follows:
EVAL name = 'Smith Robert'
EVAL country = 'Canada'
WRITE customer
The column "telephon" is set to *ZEROS because RPG initialize it automatically. 
It isn't practicable to set the null indicator for EACH null-capable column 
with %NULLIND!

The result are two different records:

NAME               COUNTRY              TELEPHON
Smith Robert     Canada                    -                           (NULL 
value from SQL)
Smith Robert     Canada                    0                          (*ZERO 
value from RPG )

It isn't practicable to set the null indicator for EACH null-capable column 
with %NULLIND!
I have a bigger problem with date fields. When a
record is inserted (via rpg) the date field has a
default value = 0001-01-01. When a record is inserted (via SQL) the field has a 
NULL value.

alex

  




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