rs.closemu.RUnlock()
	}

	if rs.lastcols == nil {
		rs.closemuRUnlockIfHeldByScan()
		return errors.New("sql: Scan called without calling Next")
	}
	if len(dest) != len(rs.lastcols) {
		rs.closemuRUnlockIfHeldByScan()
		return fmt.Errorf("sql: expected %d destination arguments in Scan, not %d", len(rs.lastcols), len(dest))
	}

	for i, sv := range rs.lastcols {
		err := convertAssignRows(dest[i], sv, rs)