sum ，pack ， addSelectionField() 合计字段

//breakpoint;
    //-------------------行数
    m_qrCount = new QueryRun(NJ_MF_SilverModelInventory_ds.queryRun().query().pack());
    m_qbdsCount =   m_qrCount.query().dataSourceNo(1);
    m_qbdsCount.addSelectionField(fieldNum(NJ_MF_SilverModelInventory_tbl,RecId),SelectionField::Count);

    if (!m_qrCount.getNo(1))    //叛断记录是否空，如果为空则返回0
         LineCount.value(0);
    while(m_qrCount.next())
    {
        LineCount.value(any2int(m_qrCount.getNo(1).RecId));

    }
//----------------------------银版总量
    m_qrCount = new QueryRun(NJ_MF_SilverModelInventory_ds.queryRun().query().pack());
    m_qbdsCount =   m_qrCount.query().dataSourceNo(1);
    m_qbdsCount.addSelectionField(fieldnum(NJ_MF_SilverModelInventory_tbl,Set_qty),SelectionField::Sum);

    if (!m_qrCount.getNo(1))    //叛断记录是否空，如果为空则返回0
         ModelTotal.value(0);
    while(m_qrCount.next())
    {
        tmp = m_qrCount.getNo(1);
        ModelTotal.value(any2int(m_qrCount.getNo(1).(fieldnum(NJ_MF_SilverModelInventory_tbl,Set_qty))));

    }