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-rw-r--r--doc/src/sgml/ref/alter_table.sgml3
1 files changed, 3 insertions, 0 deletions
diff --git a/doc/src/sgml/ref/alter_table.sgml b/doc/src/sgml/ref/alter_table.sgml
index 087f640dc07..1431d2649be 100644
--- a/doc/src/sgml/ref/alter_table.sgml
+++ b/doc/src/sgml/ref/alter_table.sgml
@@ -536,6 +536,9 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
(See <xref linkend="sql-altertable-notes"/> below for an explanation
of the usefulness of this command.)
</para>
+ <para>
+ This command acquires a <literal>SHARE UPDATE EXCLUSIVE</literal> lock.
+ </para>
</listitem>
</varlistentry>