| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Jaime Casanova <systemguards(at)gmail(dot)com> |
| Cc: | Petr Jelinek <pjmodos(at)seznam(dot)cz>, "Jim C(dot) Nasby" <jnasby(at)pervasive(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: MERGE vs REPLACE |
| Date: | 2005-11-22 18:52:38 |
| Message-ID: | 200511221852.jAMIqcn26518@candle.pha.pa.us |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
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(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
+ If your life is a hard drive, | 13 Roberts Road
+ Christ can be your backup. | Newtown Square, Pennsylvania 19073
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Jaime Casanova | 2005-11-22 18:56:26 | Re: MERGE vs REPLACE |
| Previous Message | Bruce Momjian | 2005-11-22 18:38:34 | Re: tablespaces and non-empty directories |