December SFPUG: Exclusion constraints, and need host!

All,

We've scheduled a talk from Jeff Davis on his current work on 8.5, which
you'll understand is really cool if you've ever built a scheduling
application. However, we need a meeting host in the city of San
Francisco, preferably one who can sponsor food.

What: Operator Exclusion Constraints
Who: Jeff Davis
Where: in San Francisco, exact location TBA
When: Tuesday, Dec. 8th, 7pm to 9pm

Jeff Davis will present his new feature for PostgreSQL 8.5 which will
(hopefully) be committed by the time of the meeting. While the name of
the feature is obscure, its uses are compelling for anyone who has ever
had to build a calendaring application, used PostGIS, or otherwise needs
to define a complex concept of uniqueness to their database design. With
Exclusion Constraints, you can make anything unique which you can define
as an operator.

http://postgresql.meetup.com/1/calendar/1192844