Re: Cascaded Column Drop

Tom Lane wrote:
> Rod Taylor <rbt@rbt.ca> writes:
> > When a cascaded column drop is removing the last column, drop the table
> > instead.  Regression tests via domains.
>
> Is that a good idea, or should we refuse the drop entirely?  A table
> drop zaps a lot more stuff than a column drop.

I think we should refuse the drop.  It is just too strange.  You can
suggest if they want the column dropped, just drop the table.

> What I was actually wondering about after reading Tim's report was
> whether we could support zero-column tables, which would eliminate the
> need for the special case altogether.  I have not looked to see how
> extensive are the places that assume tuples have > 0 columns ...

Zero-width tables do sound interesting.  Is it somehow non-relational?

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