> > @Ann > > I will run some test and see what happens if the guids are generated > > in way where the last part varies. Like this: > > 39db9ec6-178e-77b4-5d7b-d4e969b0cd98 > > 39db9ec6-178e-e4ba-54ed-92347a131663 > > 39db9ec6-178e-c95b-c709-a42e349410df > > There would be a lot of advantage, for Firebird, in using this kind of guid?
Yes, Firebird indexes use prefix compression so the leading 14 chars of the above values would be stored under a single entry. The reality is that UUID/GUID while "universally" unique do have parts which are unique to a source system, so they are common for all UUID/GUID from that system. Sean
