"Kevin Grittner" <Kevin(dot)Grittner(at)wicourts(dot)gov> writes:
> "A.M." <agentm(at)themactionfaction(dot)com> wrote:
>> Most PLs include some session-specific storage. In PL/Perl, it is
>> %_SHARED. Setting a flag there should do the trick. If you are
>> using a PL which does not have such a notion (like plpgsql), you
>> can add a call in your triggers to a function written in a PL
>> which does support this. Alternatively, a C function which
>> sets/checks a global flag would work as well.
> I thought it might come to that.
Correctly resetting such a value after a transaction/subtransaction
abort might be a bit problematic.
regards, tom lane