Re: triggers: dynamic references to fields in NEW and OLD?

Thanks! Your solution clearly works, but it requires the shared function to
enumerate all possible column names. In my real case, there are 8-10
distinct names, so that's a bit ugly....but it works.

Vance

-----Original Message-----
If you just need which table triggered the function then |TG_TABLE_NAME| may
be simpler than passing parameters.

Something like this will probably work for you (replace the raise notice
with whatever you have to do)

create or replace function atest() returns trigger as $$ declare
avalue int;
tblfld text;
begin
tblfld := tg_argv[0];
if tblfld = 'aa' then
avalue := new.aa;
else
if tblfld = 'bb' then
avalue := new.bb;
end if;
end if;
raise notice '%',avalue;
return new;
end;
$$ language plpgsql;

klint.

--
Klint Gore
Database Manager
Sheep CRC
A.G.B.U.
University of New England
Armidale NSW 2350

Ph: 02 6773 3789
Fax: 02 6773 3266
EMail: kgore4(at)une(dot)edu(dot)au