Re: SQL99 CREATE TABLE ... (LIKE parent_table)

Rod Taylor kirjutas T, 13.05.2003 kell 15:40:
> On Tue, 2003-05-13 at 05:08, Hannu Krosing wrote:
> > Tom Lane kirjutas E, 12.05.2003 kell 17:59:
> > > Rod Taylor <rbt(at)rbt(dot)ca> writes:
> > > > Quick patch to add the subject. Restructures all inheritance to consist
> > > > of a few flags to indicate which structures we want to inherit
> > >
> > > I think overloading the inheritance mechanism to serve this purpose is a
> > > bad idea.
> >
> > Are you sure that LIKE is not _supposed_ to be inheritable. I mean that
> > changes done to the LIKE table should carry over to the table defined
> > using LIKE:
>
> > create table template( i int);
> > create table instance(like template, t text);
> > alter table template add column j int;
> >
> > and now instance should have columns i,j,t .
>
> It is described as being replaced by the column definitions within the
> new table, with no mention of connection to the parent table..
>
> 11.3, 6, d) "The <like clause> is effectively replaced by NCi, 1 (one)
> <= i <= cnt"

Is this different from UNDER, i.e does it's definition mention
connection with parent table ?

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Hannu