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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
>
> System Administrator/Programmer
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