#include <QtSql/qsqltablemodel.h>
#ifndef QSQLTABLEMODEL_H
class QSqlTableModel: public QSqlQueryModel{
   /* Some contents are skipped to improve readability */
   public: virtual class QVariant data(class QModelIndex const & idx, int role = Qt::DisplayRole) const
   /* ... */
};
#endif // QSQLTABLEMODEL_H