| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Csaba Nagy <nagy(at)ecircle-ag(dot)com> |
| Cc: | Martijn van Oosterhout <kleptog(at)svana(dot)org>, Zeugswetter Andreas DCP SD <ZeugswetterA(at)spardat(dot)at>, Dann Corbit <DCorbit(at)connx(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com>, Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, Rick Gigger <rick(at)alpinenetworking(dot)com>, Christopher Kings-Lynne <chriskl(at)familyhealth(dot)com(dot)au>, "Jim C(dot) Nasby" <jnasby(at)pervasive(dot)com>, josh(at)agliodbs(dot)com, pgsql-hackers(at)postgresql(dot)org, Jaime Casanova <systemguards(at)gmail(dot)com>, Peter Eisentraut <peter_e(at)gmx(dot)net> |
| Subject: | Re: MERGE vs REPLACE |
| Date: | 2005-11-17 14:41:10 |
| Message-ID: | 25849.1132238470@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Csaba Nagy <nagy(at)ecircle-ag(dot)com> writes:
> OK, in this case I don't care about either MERGE or REPLACE, but for an
> UPSERT which does the locking :-)
This is exactly the point --- pretty much nobody has come to us and
asked for a feature that does what Peter and Martijn say MERGE does.
(I haven't bothered to look at the 2003 spec, I'm assuming they read it
correctly.) What we *have* been asked for, over and over, is an
insert-or-update feature that's not so tedious and inefficient as the
savepoint-insert-rollback-update kluge. That's what we ought to be
concentrating on providing.
regards, tom lane
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