From: wit <microx@hotpop.com>
To: pgsql-sql@postgresql.org
Subject: check source of trigger
Date: Fri, 20 Sep 2002 15:25:14 +0700
Message-ID: <amem61$1j4o$1@news.hub.org> (raw)
Hello,
I have a question about trigger. I have tables with the following structure:
create table A (
e_codeA char(5) default '' not null,
n_codeA varchar(20) default '' not null,
constraint A_pkey primary key ( e_codeA )
);
create table B (
e_codeB char(5) default '' not null,
e_codeA char(5) default '' not null
constraint e_codeA_ref references A( e_codeA )
on delete cascade on update cascade,
n_codeB varchar(20) default '' not null,
constraint B_pkey primary key ( e_tranB, e_codeA )
);
I have trigger and procedure on table B to capture any change and insert
into table logB:
create trigger trigger_b before insert or update or delete on B for each
row execute procedure log_change();
When I update e_codeA in table A, the constrain trigger will update e_codeA
in B. My trigger, trigger_b, also was trigged and procedure will record
change into table logB too.
How to write a code in my db procedure to check whether the procedure was
called by normal SQL or was called by cascade trigger.
Regards,
wit
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-sql@postgresql.org
Cc: microx@hotpop.com
Subject: Re: check source of trigger
In-Reply-To: <amem61$1j4o$1@news.hub.org>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox