Re: Re : overriding default value in inherited column (+ set_value function)

From: Stephan Szabo <sszabo(at)megazone23(dot)bigpanda(dot)com>
To: Matt Magoffin <mmagoffin(at)proxicom(dot)com>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: Re : overriding default value in inherited column (+ set_value function)
Date: 2001-03-20 20:50:20
Message-ID: Pine.BSF.4.21.0103201248480.30334-100000@megazone23.bigpanda.com
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I'd guess you could use TG_RELID or TG_RELNAME inside your trigger.

On Tue, 20 Mar 2001, Matt Magoffin wrote:

> Is there any way to make use of the tableoid either as an argument to the
> function or as a reference within the function (in plpgsql)? For example,
> I'd like to either
>
> CREATE TRIGGER set_default_value BEFORE INSERT
> ON foo FOR EACH ROW EXECUTE PROCEDURE set_value('tableoid');
>
> and within the function set_value():
>
> SELECT p.relname::text FROM pg_class p WHERE p.oid = TG_ARGV[0]::oid );
>
> - or -
>
> CREATE TRIGGER set_default_value BEFORE INSERT
> ON foo FOR EACH ROW EXECUTE PROCEDURE set_value();
>
> and within the function set_value():
>
> SELECT p.relname::text FROM pg_class p WHERE p.oid = NEW.tableoid;
>
> The former produces the error
>
> ERROR: text_oid: error in "tableoid": can't parse "tableoid"
>
> and the later produces the error:
>
> ERROR: record new has no field tableoid
>
> I gather the former method is passing the string "tableoid" into the
> set_value() function. I just want to be able to write one function that uses
> the tableoid value to produce different results instead of unique functions
> for each table I create.

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