while(!m_pRecordset->EndOfFile) 
{ 
    _vData = m_pRecordset->GetCollect( cDataName );
    if( _vData.vt != VT_NULL ) 
    {      
        cData = (char*)(_bstr_t)_vData;  //转换数据
    } 
    m_pRecordset->MoveNext();   //移到下一条记录 
}    

    char * updata_cmd1    =    "drop database dbtest" ;//删除指定数据库
    char * updata_cmd2    =    "UPDATE stu_info2 SET ssex = '女' WHERE sage = '50'" ;
    try
    {    //对数据库执行sql语句
        m_pConnection->Execute( updata_cmd1 , NULL , 1 ) ;   
        m_pConnection->Execute( updata_cmd2 , NULL , 1 ) ;   
    }
    catch( _com_error e )
    {    //抛出异常 
        std::cerr <<"\nEditData Function Error: "<<(char*)e.Description();
        return false ;
    }