Don't know if this would work but could you check to see if the corresponding PK exists on A?
It may also help to explain why you would want to do such a thing so that someone may be able to provide an alternative
solutionas opposed to simply responding to a generic feature question.
David J.
-----Original Message-----
From: pgsql-general-owner@postgresql.org [mailto:pgsql-general-owner@postgresql.org] On Behalf Of Grzegorz Jaskiewicz
Sent: Thursday, March 17, 2011 6:41 PM
To: pgsql-general@postgresql.org
Subject: [GENERAL] triggers and FK cascades
Considering the following example.
Tables A and B.
Table A contains some data.
Table B reefers to table A using FK with 'on delete cascade'. Table B has a trigger on it, after delete per row
Now, is there any way I can tell in the trigger on table B that it has been called from a direct delete on that table,
asoppose to the indirect (FK) delete on table A?
Trigger is PLpg/SQL or C function.
--
GJ
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