Re: MERGE vs REPLACE

On 11/22/05, Bruce Momjian <pgman@candle.pha.pa.us> wrote:
> Jaime Casanova wrote:
> > >
> > > And yes merge CAN be used to do REPLACE (oracle uses their dummy table
> > > for this, we can use the fact that FROM clause isn't required in postgres).
> > >
> >
> > the FROM clause is required by default (starting with 8.1) unless you
> > change a postgresql.conf parameter.
> >
> > and i don't think that idea will have any fan...
>
> No, it is not, try SELECT 1.  Oracle requires SELECT 1 FROM dual.  The
> change in 8.1 is that SELECT pg_class.relname no longer works.  You have to
> do SELECT relname FROM pg_class.
>
> --
>  Bruce Momjian                        |  http://candle.pha.pa.us
>  pgman@candle.pha.pa.us               |  (610) 359-1001
>  +  If your life is a hard drive,     |  13 Roberts Road
>  +  Christ can be your backup.        |  Newtown Square, Pennsylvania 19073
>

touche...

--
regards,
Jaime Casanova
(DBA: DataBase Aniquilator ;)