> -----Original Message-----
> From: owner-pgsql-hackers@postgreSQL.org
> [mailto:owner-pgsql-hackers@postgreSQL.org]On Behalf Of Zeugswetter
> Andreas SB
>
> > > > > My idea is as follows.
> > > >
> > > > > 1)add a visibile/invisible flag to pg_attribute
> > >
> > > might use a xid as flag, so rows before xid have the
> > column, rows after
> > > xid don't have it.
> > >
> >
> > From where do we get the xid ?
>
> Transaction id of alter table command ?
>
Does it work well after one more column is added ?
Regards.
Hiroshi Inoue
Inoue@tpf.co.jp
