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Doc: Clarify locks taken when using ALTER TABLE ATTACH PARTITION

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Since 898e5e32, this command uses partially ShareUpdateExclusiveLock,
but the docs did not get the call.

Author: Justin Pryzby
Reviewed-by: Amit Langote, Álvaro Herrera, Michael Paquier
Discussion: https://postgr.es/m/20191028001207.GB23808@telsasoft.com
Backpatch-through: 12
This commit is contained in:
Michael Paquier 2019-11-05 10:32:38 +09:00
parent ea88133801
commit 2a4d96ebbd
1 changed files with 7 additions and 0 deletions
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7
doc/src/sgml/ref/alter_table.sgml
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@ -901,6 +901,13 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
the scan of the new partition, it is always skipped when the default
partition is a foreign table.
</para>
<para>
Attaching a partition acquires a
<literal>SHARE UPDATE EXCLUSIVE</literal> lock on the parent table,
in addition to <literal>ACCESS EXCLUSIVE</literal> locks on the table
to be attached and on the default partition (if any).
</para>
</listitem>
</varlistentry>