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Re: triggers and inheritance tree

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Jaime Casanova <jaime(at)2ndquadrant(dot)com>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: triggers and inheritance tree
Date: 2012-03-28 15:03:40
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Lists: pgsql-hackers
On Wed, Mar 28, 2012 at 10:46 AM, Jaime Casanova <jaime(at)2ndquadrant(dot)com> wrote:
> On Wed, Mar 28, 2012 at 8:29 AM, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
>> I think the problem is that the UPDATE or DELETE can only fire once a
>> matching row has been identified, so that OLD can be filled in
>> appropriately.  But in this case, the matching row gets found not in
>> the parent table, but in one of its child tables.  So any triggers on
>> the child table would fire, but triggers on the parent table will not.
> ah! and of course that makes a lot of sense...
> how embarrasing! :(

If it's any consolation, when I initially looked at your example, I
couldn't see what was wrong with it, either.  After I ran it I figured
it out.  :-)

Robert Haas
The Enterprise PostgreSQL Company

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