Re: wCTE: why not finish sub-updates at the end, not the beginning?

On Fri, Feb 25, 2011 at 10:12:02PM -0500, Tom Lane wrote:
> David Fetter <david@fetter.org> writes:
> > What's the effect, if any, on CTEs that depend on each other
> > explicitly?
> 
> An error.  That would require mutual recursion, which we don't
> support for the SELECT case let alone data-modifying statements.

Sorry that was unclear.  Let's imagine there's a DELETE ... RETURNING
in one WITH, and an UPDATE in another that depends on that one.  Is
that still allowed?

Cheers,
David.
-- 
David Fetter <david@fetter.org> http://fetter.org/
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