Re: update ALTER TABLE with ATTACH PARTITION lock mode

On Sun, Oct 27, 2019 at 07:12:07PM -0500, Justin Pryzby wrote:
> commit #898e5e32 (Allow ATTACH PARTITION with only ShareUpdateExclusiveLock)
> updates ddl.sgml but not alter_table.sgml, which only says:
>
> https://www.postgresql.org/docs/12/release-12.html
> |An ACCESS EXCLUSIVE lock is held unless explicitly noted.

+     <para>
+      Attaching a partition acquires a <literal>SHARE UPDATE EXCLUSIVE</literal>
+      lock on the partitioned table, in addition to an
+      <literal>ACCESS EXCLUSIVE</literal> lock on the partition.
+     </para>
Updating the docs of ALTER TABLE sounds like a good idea.  This
sentence looks fine to me.  Perhaps others have suggestions?

> Find attached patch, which also improve language in several related places.

Not sure that these are actually improvements.
--
Michael