Re: Rules/Trigges Trade-offs

Bruce Momjian wrote:
> > > > 3) There are no AFTER Rules, making, for example, a rule with a table
> > check on
> > > > the new data impractical, so you'd want to use Triggers or Constraints
> > >
> > > We have changed ordering in 7.3 where I think INSERT rules are _after_
> > > the insert.
> >
> > How would that work? What if I want to reject the insert?
>
> Uh, good question. I can't remember now what we re-ordered in 7.3, but
> I thought it had to do with rules.

OK, I found what I wanted. We made rules fire in alphabetical order in
7.3, and INSTEAD rules are not reordered to the font/back --- they are
treated just like any other rule and executed alphabetically.

I thought we had some problem with rules or triggers and OLD/NEW
handling, but I can't see any mention of that, and it must have been in
an older release.

The question of firing order is a good one and one that isn't asked very
often.

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