From: | Matthias Teege <matthias(at)mteege(dot)de> |
---|---|
To: | pgsql-general(at)postgresql(dot)org |
Subject: | Why isn't that null |
Date: | 2000-06-27 06:52:37 |
Message-ID: | 200006270652.IAA23069@moon.mteege.de |
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Lists: | pgsql-general |
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
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