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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 9b2e4c5749c..ab5e6bf3d42 100644
--- a/doc/src/sgml/ref/alter_table.sgml
+++ b/doc/src/sgml/ref/alter_table.sgml
@@ -476,6 +476,9 @@ 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>