Re: What Is The Firing Order?

> The alphabetical ordering would change the order, but only with respect to
> the new constraint and existing ones not between the existing ones.  The
> advantage here is that making a trigger fire before an existing one is
> easy, since you can name before it.
>
> The oid ordering has the property that the triggers would by default run
> in creation order.  Creating a new trigger would always put it at the end
> unless you've wrapped oids which is nicer than having to worry about
> interactions between the new trigger and existing ones based on where it
> is (although you have to do that now), however putting a trigger before
> an existing one means dropping and recreating one or more of your existing
> triggers... all of the ones from where you want to put it in the order to
> the last one.

Good points.  It is a tradeoff between making things stable for people
who don't notice the order vs. making it easy to define the ordering.

--
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman@candle.pha.pa.us               |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026