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diff --git a/evolution/combined/driver.cxx b/evolution/combined/driver.cxx
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+// file      : evolution/combined/driver.cxx
+// copyright : Copyright (c) 2009-2013 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+// Combined schema evolution test.
+//
+
+#include <memory>   // std::auto_ptr
+#include <cassert>
+#include <iostream>
+
+#include <odb/database.hxx>
+#include <odb/transaction.hxx>
+
+#include <common/common.hxx>
+
+#include "test1.hxx"
+#include "test2.hxx"
+#include "test1-odb.hxx"
+#include "test2-odb.hxx"
+
+using namespace std;
+using namespace odb::core;
+
+int
+main (int argc, char* argv[])
+{
+  try
+  {
+    auto_ptr<database> db (create_database (argc, argv));
+
+    // 1 - base version
+    // 2 - migration
+    // 3 - current version
+    //
+    unsigned short pass (*argv[argc - 1] - '0');
+
+    switch (pass)
+    {
+    case 1:
+      {
+        using namespace v2;
+
+        object o ("1");
+        o.dui = 1;
+        o.dfk = new object1 (1);
+        o.acn = 1;
+        o.anui = 1;
+        o.dnui = 1;
+        o.dt.push_back (1);
+        o.dc = 1;
+        o.acnn.reset ();
+        o.afk = 1;
+        o.aui = 1;
+
+        {
+          transaction t (db->begin ());
+          db->persist (o.dfk);
+          db->persist (o);
+          t.commit ();
+        }
+        break;
+      }
+    case 2:
+      {
+        using namespace v3;
+
+        {
+          transaction t (db->begin ());
+          auto_ptr<object> p (db->load<object> ("1"));
+
+          assert (p->ac1 == 999);
+          assert (!p->ac2);
+          assert (!p->ac3);
+
+          // Migrate.
+          //
+          p->dfk = 999;
+          p->at.push_back ("abc");
+          p->ac3 = 1;
+          p->acn.reset ();
+          p->acnn = 1;
+
+          db->update (*p);
+
+          t.commit ();
+        }
+        break;
+      }
+    case 3:
+      {
+        using namespace v3;
+
+        {
+          transaction t (db->begin ());
+          auto_ptr<object> p (db->load<object> ("1"));
+
+          // Check post-migration.
+          //
+          assert (p->dfk == 999);
+          assert (p->at[0] == "abc");
+          assert (*p->ac3 == 1);
+          assert (!p->acn);
+          assert (*p->acnn == 1);
+
+          t.commit ();
+        }
+        break;
+      }
+    default:
+      {
+        cerr << "unknown pass number '" << argv[argc - 1] << "'" << endl;
+        return 1;
+      }
+    }
+  }
+  catch (const odb::exception& e)
+  {
+    cerr << e.what () << endl;
+    return 1;
+  }
+}