| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Justin Pryzby <pryzby(at)telsasoft(dot)com> |
| Cc: | Robert Treat <rob(at)xzilla(dot)net>, Robert Haas <robertmhaas(at)gmail(dot)com>, Andrew Dunstan <andrew(at)dunslane(dot)net>, pgsql-hackers(at)lists(dot)postgresql(dot)org, David Rowley <drowley(at)postgresql(dot)org>, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org> |
| Subject: | Re: doc: mentioned CREATE+ATTACH PARTITION as an alternative to CREATE TABLE..PARTITION OF |
| Date: | 2023-03-16 21:27:30 |
| Message-ID: | 3980888.1679002050@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Justin Pryzby <pryzby(at)telsasoft(dot)com> writes:
> On Thu, Mar 16, 2023 at 04:52:07PM -0400, Tom Lane wrote:
> 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.
Right, but that's the sort of detail you should read on that command's man
page, we don't need to duplicate it in N other places.
regards, tom lane
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