session = sessionFactory.openSession();
      t = session.beginTransaction();
      session.delete("from QueryCustomtailor as elp where elp.usercode='" +
                     usercode + "' and elp.querytype='" + querytype + "'");
      session.flush();
      t.commit();
      session.delete("from QueryCustomtailor as elp where elp.usercode='" +
                     usercode + "' and elp.querytype='" + querytype + "'");
这段代码,当t.commit()后,它还能执行下面的delete吗?