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Re: [SQL] how to determine table?

From: Chris Bitmead <chris(at)tech(dot)com(dot)au>
To: Don Yury <yura(at)vpcit(dot)ru>
Cc: pgsql-sql(at)hub(dot)org
Subject: Re: [SQL] how to determine table?
Date: 1999-07-20 02:41:25
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-sql
Good question. This is something I desperately want also. I proposed
that there be an imaginary field on all tables called "classoid" for the
oid of the class it belongs to (allowing a join with pg_class) or
perhaps a "relname" imaginary field giving the name of the relation.
Unfortunately it doesn't exist now, and having a real field with the
table name is the best that can be done.

Don Yury wrote:
> Hi All.
> Suppose I do select from class with all subclasses, for example
> SELECT id, name FROM TAB*
> and I get something like
> id | name
> ---------
> 1  | n1
> 2  | n2
> 3  | n3
> ...
> Then I want to know about certain record name of table where this record
> is stored, for example I want to know in which table record (2, n2). How
> I can do this?
> I guess I can add field 'tablename' to every subclass of tab class and
> fill it with certain table name in trigger, but perhaps exists more easy
> way?
> Sincerely yours, Yury.
>, ICQ 11831432

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