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diff --git a/common/relationship-query/driver.cxx b/common/relationship-query/driver.cxx
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+// file      : common/relationship-query/driver.cxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+// Test relationship queries.
+//
+
+#include <memory>   // std::auto_ptr
+#include <cassert>
+#include <iostream>
+
+#include <odb/session.hxx>
+#include <odb/database.hxx>
+#include <odb/transaction.hxx>
+
+#include <common/config.hxx> // HAVE_TR1_MEMORY
+#include <common/common.hxx>
+
+#include "test.hxx"
+#include "test-odb.hxx"
+
+using namespace std;
+using namespace odb::core;
+
+int
+main (int argc, char* argv[])
+{
+  try
+  {
+    auto_ptr<database> db (create_database (argc, argv));
+
+#ifdef HAVE_TR1_MEMORY
+
+    using std::tr1::shared_ptr;
+
+    //
+    //
+    {
+      shared_ptr<country> ca (new country ("CA", "Canada"));
+      shared_ptr<country> za (new country ("ZA", "South Africa"));
+      shared_ptr<country> us (new country ("US", "United States"));
+      shared_ptr<country> se (new country ("SE", "Sweden"));
+
+      shared_ptr<employer> st (new employer ("Simple Tech, Inc"));
+      shared_ptr<employer> ct (new employer ("Complex Tech, Inc"));
+
+      // person
+      //
+      shared_ptr<person> p1 (
+        new person (1, "John", "Doe", 30, ca, true, za));
+
+      shared_ptr<person> p2 (
+        new person (2, "Jane", "Doe", 29, za, false, us));
+      p2->husband = p1;
+
+      shared_ptr<person> p3 (
+        new person (3, "Joe", "Dirt", 31,  us, true, us));
+
+      shared_ptr<person> p4 (
+        new person (4, "Johan", "Johansen", 32, se, false, ca));
+
+      // employee
+      //
+      shared_ptr<employee> e1 (
+        new employee (1, "John", "Doe", 30, ca, true, za, st));
+
+      shared_ptr<employee> e2 (
+        new employee (2, "Jane", "Doe", 29, za, false, us, ct));
+      e2->husband = p1;
+
+      shared_ptr<employee> e3 (
+        new employee (3, "Joe", "Dirt", 31,  us, true, us, st));
+
+      shared_ptr<employee> e4 (
+        new employee (4, "Johan", "Johansen", 32, se, false, ca, ct));
+
+      transaction t (db->begin ());
+      db->persist (ca);
+      db->persist (za);
+      db->persist (us);
+      db->persist (se);
+
+      db->persist (st);
+      db->persist (ct);
+
+      db->persist (p1);
+      db->persist (p2);
+      db->persist (p3);
+      db->persist (p4);
+
+      db->persist (e1);
+      db->persist (e2);
+      db->persist (e3);
+      db->persist (e4);
+      t.commit ();
+    }
+
+    typedef odb::query<person> p_query;
+    typedef odb::result<person> p_result;
+
+    typedef odb::query<employee> e_query;
+    typedef odb::result<employee> e_result;
+
+    // Make sure we have an independent JOIN for each relationship.
+    //
+    {
+      session s;
+      transaction t (db->begin ());
+
+      p_result pr (db->query<person> (
+                   p_query::residence::location::code == "ZA"));
+      assert (size (pr) == 1);
+
+      e_result er (db->query<employee> (
+                   e_query::residence::location::code == "ZA"));
+      assert (size (er) == 1);
+
+      t.commit ();
+    }
+
+    // Test Self-JOIN.
+    //
+    {
+      session s;
+      transaction t (db->begin ());
+
+      p_result pr (db->query<person> (p_query::husband::last_name == "Doe"));
+      assert (size (pr) == 1);
+
+      e_result er (db->query<employee> (e_query::husband::last_name == "Doe"));
+      assert (size (er) == 1);
+
+      t.commit ();
+    }
+
+    // Test query conditions from both base and derived.
+    //
+    {
+      session s;
+      transaction t (db->begin ());
+
+      e_result r (
+        db->query<employee> (
+          e_query::employed_by::name == "Simple Tech, Inc" &&
+          e_query::nationality::code == "US"));
+
+      assert (size (r) == 1);
+
+      t.commit ();
+    }
+
+    // Test second-level pointers.
+    //
+    {
+      session s;
+      transaction t (db->begin ());
+
+      p_result r (
+        db->query<person> (
+          p_query::husband::residence::location == "CA"));
+
+      assert (size (r) == 1);
+
+      t.commit ();
+    }
+
+#endif
+  }
+  catch (const odb::exception& e)
+  {
+    cerr << e.what () << endl;
+    return 1;
+  }
+}