On Sun, Apr 26, 2015 at 11:35 AM, Stephen Frost <sfrost@snowman.net> wrote:
> Ok, that makes sense.. So is the concern that an INSERT would end up
> getting default values while an UPDATE would preserve whatever's there?
>
> I don't see that as an issue.
I think it easily could be.
> Are you still against having a way to say "go forth and update whatever
> non-conflicting columns I've specified in the INSERT, if there is a
> conflict"..?
>
> Again, not saying it has to be done now, but it'd certainly be nice if
> we had it initially because otherwise the ORMs and "frameworks" of the
> world will be stuck supporting the more verbose approach for as long as
> we support it (~5 years..).
The more verbose approach is entirely necessary much of the time. For example:
insert into upsert_race_test (index, count)
values ('541','-1') on conflict update set count=TARGET.count + EXCLUDED.count;
Merging like this will be a very common requirement.
--
Peter Geoghegan
