or prepend the UUID with a timestamp?
Regards,
Michael Vitale
Andreas Karlsson <mailto:andr...@proxel.se>
Monday, October 29, 2018 10:52 AM
On 10/29/2018 02:29 PM, Uday Bhaskar V wrote:> I have
How is it implemented? I can personally see two ways of generating
sequential UUID:s. Either you use something like PostgreSQL's
sequences or you can implement something based on the system time plus
some few random bits which means they will be mostly sequential.
It could be worth checking on the hackers mailing list if there is any
interest in this feature, but if it works like a sequence it should
also probably be a sequence if it is ever going to be accepted into
the core.
For your own use I recommend doing like Merlin suggested and write an
extension. As long as you know a bit of C they are easy to write.
Andreas
Uday Bhaskar V <mailto:uday.bhaskar...@gmail.com>
Monday, October 29, 2018 9:29 AM
Hi,
I have searched in many postgres blogs for Sequential UUID generation,
which can avoid Fragmentation issue.
I did a POC(in postgres) with sequential UUID against Non sequential
which has shown lot of different in space utilization and index size.
Sql server has "newsequentialid" which generates sequential UUID. I
have created C function which can generate a sequential UUID, but I am
not sure how best I can use that in postgres.
I would really like to contribute to Postgres, If I can. Please let me
know your thoughts or plans regarding UUID generation.
Regards,
Uday
