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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 de80a1901b5..ea27df25698 100644
--- a/doc/src/sgml/ref/alter_table.sgml
+++ b/doc/src/sgml/ref/alter_table.sgml
@@ -485,6 +485,9 @@ WITH ( MODULUS <replaceable class="parameter">numeric_literal</replaceable>, REM
endterm="sql-altertable-notes-title"/> 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>