Re: 7.2 stuff

On Sun, 24 Feb 2002, Tom Lane wrote:

> "Christopher Kings-Lynne" <chriskl(at)familyhealth(dot)com(dot)au> writes:
> > * ALTER TABLE DROP PRIMARY KEY
> > - Done, will need review
> > * ALTER TABLE DROP UNIQUE
> > - Done, will need review
>
> > I'll dredge this up again if I can. All it does is add a standards
> > compliant alternative syntax for dropping those constraints. Tom - can you
> > just do this in the parser, like you did it for the ADD constraints???
>
> I don't foresee it falling out of other parser work, if that's what you
> mean. If you want it done in the parser you'll have to do it yourself.
>
> There are some semantic issues, eg: what does it mean to do ALTER TABLE
> DROP PRIMARY KEY in an inheritance hierarchy? Does every child lose its
> primary key (if any), even if it's not inherited from the parent?

Apart from the fact that currently pkeys don't inherit, does it make
sense that the child can have a separate primary key since it should
really be inheriting from the parent and you can't have two, right?