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(at)sss(dot)pgh(dot)pa(dot)us]
Sent: Monday, January 22, 2007 3:37 AM
To: Simon Kinsella
Cc: pgsql-sql(at)postgresql(dot)org
Subject: Re: [SQL] Possible to emulate pre-8.2 behaviour of SET CONSTRAINTS?

"Simon Kinsella" <simon(at)bluefiresystems(dot)co(dot)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