Hi Jan,
> Gisle Dankel wrote:
> >
> > Hi,
> > I couldn't find any explanations of error messages in the docs.
> >
> > I get this error message:
> > ERROR: triggered data change violation on relation "22"
> >
> > after doing
> >
> > DELETE FROM "22" WHERE id = 36;
> >
> > There's no foreign keys referring to this table, nor any triggers that I
> > have explicitly defined.
> > This occurs inside a transaction. When I tried it outside the transaction
> > it worked fine!
> >
> > Anyone got any idea of what is going on?
> > Do you need more information?
>
> Maybe this table is the referring one in a foreign key
> relationship?
>
> Triggers/foreign keys are the only things that can cause the
> above error message. It is a requirement of the SQL99 specs
> that one and the same row, that is part of referential
> integrity constraints or triggers, cannot be touched twice
> during a transaction.
>
> So if you did (in the same transaction)
>
> UPDATE "22" SET "22 A)" = 2.2 WHERE id = 36;
>
> then the above DELETE might be forbidden as of the specs.
>
>
Yes, that's it ! The element was inserted in the same transaction.
I'll have to remove the foreign key constraints.
Cheers,
Gisle
