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-rw-r--r--doc/src/sgml/ref/create_materialized_view.sgml4
1 files changed, 3 insertions, 1 deletions
diff --git a/doc/src/sgml/ref/create_materialized_view.sgml b/doc/src/sgml/ref/create_materialized_view.sgml
index 0ed764b3533..b742e17ac82 100644
--- a/doc/src/sgml/ref/create_materialized_view.sgml
+++ b/doc/src/sgml/ref/create_materialized_view.sgml
@@ -105,7 +105,9 @@ CREATE MATERIALIZED VIEW <replaceable>table_name</replaceable>
<listitem>
<para>
A <xref linkend="sql-select">, <link linkend="sql-table">TABLE</link>,
- or <xref linkend="sql-values"> command.
+ or <xref linkend="sql-values"> command. This query will run within a
+ security-restricted operation; in particular, calls to functions that
+ themselves create temporary tables will fail.
</para>
</listitem>
</varlistentry>