Re: UUID v7

Thanks for interesting ideas, Mat!

> On 31 Aug 2023, at 20:32, Mat Arye <mat@timescaledb.com> wrote:
>
> From a user perspective, it would be great to add 2 things:
> - A function to extract the timestamp from a V7 UUID (very useful for defining constraints if partitioning by the
uuid-embeddedtimestamps, for instance). 

Well, as far as I know, RFC discourages extracting timestamps from UUIDs. But we still can have such functions...maybe
asan extension? 

> - Can we add an optional timestamptz argument to gen_uuid_v7 so that you can explicitly specify a time instead of
alwaysgenerating for the current time? If the argument is NULL, then use current time. This could be useful for
backfillingand other applications. 

I think this makes sense. We could also have a counter as an argument. I'll try to implement that.
However, so far I haven't figured out how to implement optional arguments for catalog functions. I'd appreciate any
pointershere. 


Best regards, Andrey Borodin.