Index: pgadmin/schema/gpExtTable.cpp
===================================================================
--- pgadmin/schema/gpExtTable.cpp	(revision 7938)
+++ pgadmin/schema/gpExtTable.cpp	(working copy)
@@ -429,7 +429,7 @@
         wxT("SELECT c.oid, c.xmin, c.relname, pg_get_userbyid(c.relowner) AS exttableowner, c.relacl AS relacl, description \n")
         wxT("  FROM pg_class c\n")
         wxT("  LEFT OUTER JOIN pg_description des ON (des.objoid=c.oid and des.objsubid=0)\n")
-        wxT(" WHERE  (c.relkind = 'x'::char)\n")
+        wxT(" WHERE  (c.relkind = 'x' OR (c.relkind = 'r' AND c.relstorage = 'x'))\n")
         wxT("   AND relnamespace = ") + collection->GetSchema()->GetOidStr() + wxT("\n")
         + restriction
         + wxT(" ORDER BY relname"));
Index: pgadmin/schema/pgTable.cpp
===================================================================
--- pgadmin/schema/pgTable.cpp	(revision 7938)
+++ pgadmin/schema/pgTable.cpp	(working copy)
@@ -1257,8 +1263,9 @@
         query += wxT(" WHERE relkind IN ('r','s','t') AND relnamespace = ") + collection->GetSchema()->GetOidStr() + wxT("\n");
 
         // Greenplum: Eliminate (sub)partitions from the display, only show the parent partitioned table
+        // and eliminate external tables
         if (collection->GetConnection()->GetIsGreenplum() && collection->GetConnection()->BackendMinimumVersion(8, 2, 9))
-            query += wxT("AND rel.oid NOT IN (select parchildrelid from pg_partition_rule)");
+            query += wxT("AND rel.relstorage <> 'x' AND rel.oid NOT IN (select parchildrelid from pg_partition_rule)");
 
         query += restriction + 
             wxT(" ORDER BY relname");