On Thu, Aug 7, 2014 at 3:06 PM, Peter Geoghegan <pg@heroku.com> wrote:
I think that pre-sorted, all-unique text datums, that have all differences beyond the first 8 bytes, that the user happens to actually want to sort are fairly rare.
While I'm sure it's not common, I've seen a couple of ten-million tuple tables having a URL column as primary key where 98% of the entries begin with 'http://www.'