On 13 May 2012 23:45, Robert Haas <robertmhaas@gmail.com> wrote:
> Hmm, it looks like GIN can't support exclusive constraints because
> amgettuple support is required, and unfortunately that got remove for
> GIN in this commit:
>
> commit ff301d6e690bb5581502ea3d8591a1600fd87acc
That seems very unfortunate, given that the 9.0 release notes say:
"Exclusion constraints generalize uniqueness constraints by allowing
arbitrary comparison operators, not just equality....This is useful
for time periods and other ranges, as well as arrays."
--
Peter Geoghegan http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training and Services
