On Thu, Mar 16, 2023 at 04:52:07PM -0400, Tom Lane wrote:
> Justin Pryzby <pry...@telsasoft.com> writes:
> > On Thu, Jan 19, 2023 at 04:47:59PM -0500, Robert Treat wrote:
> >> I think all of that feedback is useful, I guess the immediate question
> >> becomes if Justin wants to try to proceed with his patch implementing
> >> the change, or if adjusting the documentation for the current
> >> implementation is the right move for now.
>
> > The docs change is desirable in any case, since it should be
> > backpatched, and any patch to change CREATE..PARTITION OF would be for
> > v17+ anyway.
>
> Right. Pushed with a little further effort to align it better with
> surrounding text.
Thanks.
It is possible to use <link linkend="sql-altertable"><command>ALTER
TABLE ATTACH/DETACH PARTITION</command></link> to perform these
operations with a weaker lock, thus reducing interference with
concurrent operations on the partitioned table.
Note that in order for DETACH+DROP to use a lower lock level, it has to be
DETACH CONCURRENTLY. ATTACH is implicitly uses a lower lock level, but for
DETACH it's only on request.
--
Justin
