FW: Possible to emulate pre-8.2 behaviour of SET CONSTRAINTS?

That sounds like a plan - will give it a go. Thanks!

simon 

-----Original Message-----
From: Tom Lane [mailto:tgl@sss.pgh.pa.us]
Sent: Monday, January 22, 2007 3:37 AM
To: Simon Kinsella
Cc: pgsql-sql@postgresql.org
Subject: Re: [SQL] Possible to emulate pre-8.2 behaviour of SET CONSTRAINTS?


"Simon Kinsella" <simon@bluefiresystems.co.uk> writes:
> My system currently runs on PostgreSQL 8.1 and makes use of the old 
> behaviour of SET CONSTRAINTS, namely that the command is applied to 
> all constraints that match the specified name.

Unfortunately that was pretty far away from what the SQL spec says :-(

> This makes it very easy to write
> a general-case function that can change the DEFERRED mode on a given 
> constraint that is present in several similar schemas (sounds odd 
> maybe but it works very well in my case!).

I think you could do it fairly easily still, eg
for rec in select nspname from pg_namespace n join pg_constraint c
on n.oid = c.connamespace where conname = $1 loop          execute 'set constraints ' || quote_ident(rec.nspname) ||
'.'||
 
quote_ident($1) || ' immediate';       end loop;

Exceedingly untested, but something close to this seems like it'd solve your
problem.
        regards, tom lane