def METHOD_NAME(self, start=None, limit=None):
    ret = super(ConfigurableReportSqlDataSource, self).METHOD_NAME(start=start, limit=limit)
    for report_column in self.top_level_db_columns:
        report_column.format_data(ret)
    for computed_column in self.top_level_computed_columns:
        for row in ret:
            row[computed_column.column_id] = computed_column.wrapped_expression(row)
    return ret