Re: Simple Column reordering

Jim C. Nasby wrote:
> On Fri, Feb 23, 2007 at 02:09:55PM +0000, Simon Riggs wrote:
> > > If you really want an interim solution, what about a builtin function
> > > that would explicitly mutate the definition and table contents (if any)
> > > along the lines you want? (assuming that's lots less work than just
> > > doing the whole thing right to start with). Or even one which just
> > > *displayed* the optimal order might be sufficient assistance to DBAs who
> > > want to take advantage of this.
> >
> > I think the only interim solution now is to put functionality into
> > PgAdmin et al to optimize the column order.
>
> Well, if it comes to that it would be good to have pgAdmin et all driven
> by logic in the database, so that people using psql can benefit as well.
> Perhaps a function that is passed an existing table and re-creates it in
> optimal order (if it's empty...). Or at least spits out a CREATE TABLE
> statement for you that's in optimal order.

That's just working around the fact that the engine is not smart enough
to do the right thing (semi-) automatically. We don't support that kind
of operation, just like we don't support optimizer hints.

--
Alvaro Herrera http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.