Re: NULL's on the Iseries

[Vernon Hamberg <vhamberg@xxxxxxxxxxx>]

The NULL attribute of a column (field) is a bit flag stored in the record 
ahead of the actual data. If you are working in C, you need to use a 
NULL-indicator array. Same in RPG IV, and even in embedded SQL. The trick 
is to have an array of 4B 0 (according to the manual) and append it to the 
host variable array

 :hostarray:indarray

Then there is a value for each column that can be used to get or set the 
NULL attribute. This seems like pretty full support for SQL/RPG, if by that 
you mean embedded SQL.

Later
Vern

At 02:41 AM 9/3/2005, you wrote:

> If you plan to use:
>
> SQL, the support is complete
> RPGIV, partial support for previous release, good for V5R3
> SQL/RPG, almost not supported.
>
> HTH
> Marco
>
> P.S. RPGIV supports null only on database fileds.
>
> --- Chris Payne <CPayne@xxxxxxxxxxxxxxx> wrote:
>
> > Hello,
> >
> > What is your take on NULL's on the Iseries, do they have a place? If a
> > user does not enter data into an optional numeric field, do you set the
> > field to 0 or NULL? What are some of the drawbacks of using NULL's?
> >
> >
> >
> > Christopher M. Payne
> >
> > CPayne@xxxxxxxxxxxxxxx
> >
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