Petr,
> "ERROR: trigger function 105526 returned null value"
This should normally never happen so chances are you've encountered a
bug. Can you tell me more about what it is you do?
What kind of trigger is it? Insert, Update, Delete?
Is it fired on each row or per statement?
Is it fired before or after?
Would it be possible for me to look at the actual trigger code?
Regards,
Thomas Hallgren