Re: Porting MSSQL to PGSQL (Was: [OT] MySQL is bad, but THIS

From: "Jim C(dot) Nasby" <jnasby(at)pervasive(dot)com>
To: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
Cc: Martijn van Oosterhout <kleptog(at)svana(dot)org>, Mischa Sandberg <mischa(at)ca(dot)sophos(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Porting MSSQL to PGSQL (Was: [OT] MySQL is bad, but THIS
Date: 2006-05-22 19:33:34
Message-ID: 20060522193334.GI64371@pervasive.com
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On Mon, May 22, 2006 at 03:11:14PM -0400, Bruce Momjian wrote:
> Martijn van Oosterhout wrote:
> -- Start of PGP signed section.
> > On Mon, May 22, 2006 at 10:41:59AM -0500, Jim C. Nasby wrote:
> > > > CREATE TRIGGER name { BEFORE | AFTER } { event [ OR ... ] }
> > > > ON table FOR EACH STATEMENT
> > > > EXECUTE PROCEDURE funcname ( arguments )
> > >
> > > And that doesn't give you any information on the rows that were
> > > modified. Other RDBMSes will provide a NEW rowset and an OLD rowset that
> > > you can select from inside the trigger as if they were real tables.
> >
> > Is this on the TODO list? It doesn't seem too difficult to create a
> > tuplestore and store the NEW and OLD tuples there and pass the whole
> > set to the trigger.
>
> TODO has:
>
> * Allow statement-level triggers to access modified rows

No wonder I missed it, it's under the RI section. :)

Actually, it looks like there's a bunch of things in there that are
generic trigger issues and not really RI issues. And some of those are
exact duplicates of the triggers section... wee!
--
Jim C. Nasby, Sr. Engineering Consultant jnasby(at)pervasive(dot)com
Pervasive Software http://pervasive.com work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461

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