Re: updating a sequence

On Tue, Nov 15, 2011 at 4:28 PM, John Fabiani <johnf(at)jfcomputer(dot)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(at)jfcomputer(dot)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.