Index: doc/src/sgml/ref/create_table.sgml
===================================================================
RCS file: /projects/cvsroot/pgsql/doc/src/sgml/ref/create_table.sgml,v
retrieving revision 1.94
diff -u -r1.94 create_table.sgml
--- doc/src/sgml/ref/create_table.sgml 13 Aug 2005 02:48:18 -0000 1.94
+++ doc/src/sgml/ref/create_table.sgml 31 Oct 2005 17:54:10 -0000
@@ -421,7 +421,10 @@
primary key of the reftable is used. The
referenced columns must be the columns of a unique or primary
- key constraint in the referenced table.
+ key constraint in the referenced table. Note that foreign key
+ constraints may not be defined between temporary tables and permanent
+ tables. This is because doing so would eliminate most of the performance
+ gains of using a temporary table.