From: John Fabiani <johnf@jfcomputer.com>
Organization: J.F. Computer Solutions
To: pgsql-sql@postgresql.org
Subject: Re: updating a sequence
Date: Wed, 16 Nov 2011 07:19:21 -0800
User-Agent: KMail/1.13.5 (Linux/2.6.34.10-0.2-desktop; KDE/4.4.4; i686; ; )
Cc: Scott Marlowe <scott.marlowe@gmail.com>
References: <201111150806.30911.johnf@jfcomputer.com>
	<CAEV0TzApAcAtTZYqHGGexBfvps__v9oTwEQ5dGrtEqHPEYeW3w@mail.gmail.com>
	<CAOR=d=3fahvFCn80mQLwK4Pnru7u1DiV5ZTD3oyxe7S+sSpXjA@mail.gmail.com>
In-Reply-To: 
 <CAOR=d=3fahvFCn80mQLwK4Pnru7u1DiV5ZTD3oyxe7S+sSpXjA@mail.gmail.com>
MIME-Version: 1.0
Content-Type: Text/Plain;
  charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Message-Id: <201111160719.21111.johnf@jfcomputer.com>

On Tuesday, November 15, 2011 07:46:19 pm Scott Marlowe wrote:
> On Tue, Nov 15, 2011 at 5:33 PM, Samuel Gendler
> 
> <sgendler@ideasculptor.com> wrote:
> > On Tue, Nov 15, 2011 at 4:28 PM, John Fabiani <johnf@jfcomputer.com> 
wrote:
> >> On Tuesday, November 15, 2011 08:33:54 am Richard Broersma wrote:
> >> > On Tue, Nov 15, 2011 at 8:06 AM, John Fabiani <johnf@jfcomputer.com>
> >> > 
> >> > wrote:
> >> > > alter sequence somename restart with (select max(pk) from
> >> > > sometable).
> >> > > 
> >> > > I need this for automating an ETL (using pentaho).
> >> > 
> >> > http://www.postgresql.org/docs/9.1/interactive/functions-sequence.html
> >> > #FUNC TIONS-SEQUENCE-TABLE
> >> 
> >> I don't see how that helps answer my problem.  I know how to update a
> >> sequence.  I want to pass a value for the restart vaue that depends on a
> >> query
> >> - all in one statement.  I would think it is a common problem i.e.
> >> migrating
> >> data.
> > 
> > use a subquery to set the value -
> > select setval('foo', select max(some_id) from some_table)
> > It's all right there in the docs that you were pointed to. We try to
> > encourage people to be somewhat self sufficient around here.
> 
> You need to wrap a subselect in ():
> 
> select setval('foo', (select max(some_id) from some_table));
> 
> That works in 9.1.1.  No clue about previous versions off the top of
> my head, but I seem to recall it doesn't work in 8.3 and prior
> versions.

Thanks that did work with the parens.  

I could not get to work earlier.

Johnf