Index: accesslib.php
===================================================================
RCS file: /cvsroot/moodle/moodle/lib/accesslib.php,v
retrieving revision 1.502
diff -u -r1.502 accesslib.php
--- accesslib.php	16 Jun 2008 14:25:53 -0000	1.502
+++ accesslib.php	21 Jun 2008 12:19:36 -0000
@@ -5184,11 +5184,11 @@
                                        FROM {context_temp} temp
                                        WHERE temp.id = ct.id)";
     } else {
+        // this should work for most RDBMS so maybe we'll keep it and get rid of this ugly if-else
         $updatesql = "UPDATE {context}
-                         SET path  = temp.path,
-                             depth = temp.depth
-                        FROM {context_temp} temp
-                       WHERE temp.id={context}.id";
+                         SET path  = (SELECT path FROM {context_temp} WHERE id = {context}.id),
+                             depth = (SELECT depth FROM {context_temp} WHERE id = {context}.id)
+                         WHERE id IN (SELECT id FROM mdl_context_temp)";    
     }
 
     // Top level categories