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-rw-r--r--doc/src/sgml/ddl.sgml10
1 files changed, 10 insertions, 0 deletions
diff --git a/doc/src/sgml/ddl.sgml b/doc/src/sgml/ddl.sgml
index 02583911540..50dc25f87f8 100644
--- a/doc/src/sgml/ddl.sgml
+++ b/doc/src/sgml/ddl.sgml
@@ -3353,6 +3353,16 @@ ALTER TABLE measurement ATTACH PARTITION measurement_y2008m02
on individual partitions, not the partitioned table.
</para>
</listitem>
+
+ <listitem>
+ <para>
+ Mixing temporary and permanent relations in the same partition tree is
+ not allowed. Hence, if the partitioned table is permanent, so must be
+ its partitions and likewise if the partitioned table is temporary. When
+ using temporary relations, all members of the partition tree have to be
+ from the same session.
+ </para>
+ </listitem>
</itemizedlist>
</para>
</sect3>