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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 3b111a4c2b9..1976f6dcede 100644
--- a/doc/src/sgml/ref/alter_table.sgml
+++ b/doc/src/sgml/ref/alter_table.sgml
@@ -594,6 +594,9 @@ ALTER TABLE <replaceable class="PARAMETER">name</replaceable>
the table's schema. (These restrictions enforce that altering the owner
doesn't do anything you couldn't do by dropping and recreating the table.
However, a superuser can alter ownership of any table anyway.)
+ To add a column or alter a column type or use the <literal>OF</literal>
+ clause, you must also have <literal>USAGE</literal> privilege on the data
+ type.
</para>
</refsect1>