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

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От Bruce Momjian
Тема Re: Porting MSSQL to PGSQL (Was: [OT] MySQL is bad, but THIS
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Msg-id 200605222039.k4MKdQc03420@candle.pha.pa.us
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Ответ на Re: Porting MSSQL to PGSQL (Was: [OT] MySQL is bad, but THIS  ("Jim C. Nasby" <jnasby@pervasive.com>)
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OK, I created a "trigger" section and moved "referential integrity"
under "SQL commands".

---------------------------------------------------------------------------

Jim C. Nasby wrote:
> 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@pervasive.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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--  Bruce Momjian   http://candle.pha.pa.us EnterpriseDB    http://www.enterprisedb.com
 + If your life is a hard drive, Christ can be your backup. +


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