Re: Why isn't that null

Hi,

May be this insert will work with your test in your function

insert into aufpos(auftrag, artikel, best_menge, vkp,
 lieferwoche, cuser, ctime, uuser, utime) values
('175','8501900','12',NULL,'3500','matthias',
 now (), 'matthias',now ())

Nicolas

Matthias Teege a écrit :
>
> Moin,
>
> I have al small problem with ISNULL in a trigger
> function. My definition looks like:
>
> IF NEW.vkp ISNULL THEN
>    select t1.las into i_kd
>    from auftrag t1, aufpos t2 where
>    t2.auftrag = t1.id;
>    select get_vkp(i_kd, NEW.artikel) into f_vkp;
>    NEW.vkp:=f_vkp;
> END IF;
>
> The following SQL query didnt cause this if statement:
>
> insert into aufpos(auftrag, artikel, best_menge, vkp,
> lieferwoche, cuser, ctime, uuser, utime) values
> ('175','8501900','12','','3500','matthias',
> now (), 'matthias',now ())
>
> If I change the function statement as follows:
>
> IF NEW.vkp = 0 THEN
>    ...
> END IF;
>
> it works but '0' is a leagal value but not '' (empty). The
> function should only be called if NEW.vkp ist empty.
>
> Many thanks
> Matthias