From: John Fabiani <johnf@jfcomputer.com>
To: pgsql-sql@postgresql.org
Cc: Scott Marlowe <scott.marlowe@gmail.com>
Subject: Re: updating a sequence
Date: Wed, 16 Nov 2011 07:19:21 -0800
Message-ID: <201111160719.21111.johnf@jfcomputer.com> (raw)
In-Reply-To: <CAOR=d=3fahvFCn80mQLwK4Pnru7u1DiV5ZTD3oyxe7S+sSpXjA@mail.gmail.com>
References: <201111150806.30911.johnf@jfcomputer.com>
<CAEV0TzApAcAtTZYqHGGexBfvps__v9oTwEQ5dGrtEqHPEYeW3w@mail.gmail.com>
<CAOR=d=3fahvFCn80mQLwK4Pnru7u1DiV5ZTD3oyxe7S+sSpXjA@mail.gmail.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
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To: pgsql-sql@postgresql.org
Cc: johnf@jfcomputer.com, scott.marlowe@gmail.com
Subject: Re: updating a sequence
In-Reply-To: <201111160719.21111.johnf@jfcomputer.com>
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