> > But, if I do this:
> > alter table history add incoming_id bigint;
> > alter table history alter incoming_id set default 0;
> > update history set incoming_id=0;
> > the table will be locked only during alter table execution, which
> > is very short time.
>
> But this exposes the state where incoming_id isn't zero to other
> transactions.
Yes, I can see your point... But if there is a system running, this will
lock it up even current transactions doesn't care about the new field.
That is how I noticed this :)
But, I guess, you can't make everybody happy :)
Thanks
--
Regards
Vladimir Kanazir