Re: Foreign key trigger timing bug?

Stephan Szabo wrote:
> On Wed, 7 Dec 2005, Bruce Momjian wrote:
> 
> > I had an open 8.1 item that was:
> >
> > 	o  fix foreign trigger timing issue
> >
> > Would someone supply text for a TODO entry on this, as I don't think we
> > fixed it in 8.1.
> 
> I'd split this into two separate items now.
> 
>  Fix before delete triggers on cascaded deletes to run after the cascaded
> delete is done.  This is odd, but seems to be what the spec requires.
> 
>  Fix problems with referential action caused before triggers that modify
> rows that would also be modified by the referential action.  Right now,
> this has a few symptoms, either you can get spurious seeming errors from
> the constraint or you can end up with invalid data in the referencing
> table. As far as I can see, the spec doesn't have much to say about this
> because the spec doesn't seem to allow before triggers to modify tables.

I have updated the CREATE TRIGGER documentation to highlight these
items, and the fact we consider our current behavior on the first item
to be correct.

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