January 3rd, 2010 by depesz | Tags: conflict, constraint, exclude, hotel, pg85, pg90, postgresql, rooms | 5 comments »
On 7th of December, Tom Lane committed patch by Jeff Davis that adds general exclusion constraints: Log Message: ----------- Add exclusion constraints, which generalize the concept of uniqueness to support any indexable commutative operator, not just equality. Two rows violate the exclusion constraint if ...
