On Thu, Feb 21, 2013 at 2:38 PM, Kevin Grittner <kgrittn@ymail.com> wrote:
> It doesn't. That was one of the more contentious points in the
> earlier bikeshedding phases. Some felt that throwing away the
> contents was a form of making the MV "out of date" and as such
> didn't require any special handling. Others, including myself,
> felt that "data not present" was a distinct state from "generated
> zero rows" and that attempting to scan a materialized view for
> which data had not been generated must result in an error. The
> latter property has been maintained from the beginning -- or at
> least that has been the intent.
Actually this sounds like exactly what I was saying. I withdraw my
concern entirely.
--
greg