On 6/17/21 11:10 PM, David G. Johnston wrote:
And, since its not in the commitfest app, and the last emails I found
are over a year old, it doesn’t seem to be a priority for anyone at this
time.
I'm working on the application-time (aka valid-time) side of this, and
there is another patch for system-time. I can't speak to that patch, but
my patch is almost ready to share on the mailing list. I gave a progress
update at PGCon last month, but here is a summary of what it includes:
- You can define PERIODs (this is based heavily on Vik Fearing's patch
from a few years ago).
- You can define temporal PRIMARY KEYs and UNIQUE constraints.
- You can use FOR PORTION OF syntax to do temporal UPDATEs and DELETEs.
- You can define temporal FOREIGN KEYs including with all the
CASCADE/SET NULL/SET DEFAULT options.
I noticed a problem last week with the FOR PORTION OF code, so as soon
as I fix that I'm going to organize my changes into four patch files
(one for each of those bullet points) and send that to the list.
So far I haven't tried to support partitioned tables yet, so certainly
that will remain to be done. But that's the only missing piece I'm aware
of. (I'd be grateful for any help adding that btw. And Corey has already
offered to give me some help in general.)
I'm sorry it's been slow progress the last year. I do hope I can get
this landed for v15!
Yours,
--
Paul ~{:-)
pj@xxxxxxxxxxxxxxxxxxxxxxxx
