Re: What Is The Firing Order?

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Stephan Szabo <sszabo(at)megazone23(dot)bigpanda(dot)com>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, cnliou(at)eurosport(dot)com, pgsql-general(at)postgresql(dot)org
Subject: Re: What Is The Firing Order?
Date: 2001-09-07 17:49:38
Message-ID: 200109071749.f87HncA27717@candle.pha.pa.us
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> > Should we get a system where the user can control the firing, perhaps
> > using oid order?
>
> I don't think oid order would help, because what happens if you've say got
> a trigger and then want to add another before it? I'd guess the most
> general way would be to give triggers some kind of numeric ordering not
> associated with anything else, but then you need ways to set it on create
> trigger and probably an alter trigger way to change it. :( I'd guess that
> there'd be a default value if you didn't set it, and that triggers of the
> same value would run in indeterminate order like before.

Yes, the problem with alphabetical order is that mere creation of a
trigger would change the firing order. I was thinking oid order so
there is some stability to the system for people who don't care about
the order, and a way to control it for people who need to (create
triggers in desired order).

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