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How to fix _pRecordset doesn't open ADO C++


What are the differences between a pointer variable and a reference variable in C++?How can I prevent SQL injection in PHP?How to check if a column exists in a SQL Server table?How to concatenate text from multiple rows into a single text string in SQL server?How do I iterate over the words of a string?How can I profile C++ code running on Linux?The Definitive C++ Book Guide and ListWhat is the “-->” operator in C++?How do I UPDATE from a SELECT in SQL Server?How to Delete using INNER JOIN with SQL Server?






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0















i am trying to connect my C++ project to SQL Server using ADO it goes well before pRecordset->Open(...); and error encounter it says Microsoft C++ exception: _com_error at memory location'.



i tried to do such things
pRecordset->Open(SelectQuery, _variant_t(pConnection, true),adOpenForwardOnly, adLockReadOnly, adCmdText);
but in the debug window it shows _hr: DB_E_NOTABLE Table Does not exist.
i also tried to do such things
pRecordset->Open("TestTB", _variant_t(pConnection, true),adOpenForwardOnly, adLockReadOnly, adCmdTable); but it doesn't help.



Is this Connection problem? it would be vary usefull for me if you give me some advice. Thank you in advance.



_ConnectionPtr pConnection;
_CommandPtr pCommand;
_RecordsetPtr pRecordset;

_bstr_t strCon("ADOSQL"); //"Provider=sqloledb; Data Source=...\SQLEXPRESS;Initial Catalog=TestDB;Integrated Security=True");

_bstr_t SelectQuery("Select * from TestTB");

HRESULT hr = S_OK;
CoInitialize(NULL);

//Create the Connection pointer
hr = pConnection.CreateInstance(__uuidof(Connection));
if (FAILED(hr))

printf("Error instantiating Connection objectn");


//Open the SQL Server connection
hr = pConnection->Open(strCon, "", "", adConnectUnspecified);
if (FAILED(hr))

printf("Error Opening Database object using ADO _ConnectionPtr n");


hr = pCommand.CreateInstance(__uuidof(Command));
if (FAILED(hr))

printf("Error creating command instance[]");


pCommand->ActiveConnection = pConnection;
pCommand->CommandText = SelectQuery;
pCommand->CommandType = adCmdText;

hr = pRecordset.CreateInstance(__uuidof(Recordset));
if (FAILED(hr))

printf("Failed creating record set instancen");


//CString SQLQuery = "Select * From TestTB";
pRecordset->Open(_variant_t(pCommand), _variant_t(pConnection, true),adOpenForwardOnly, adLockReadOnly, adCmdText);









share|improve this question






























    0















    i am trying to connect my C++ project to SQL Server using ADO it goes well before pRecordset->Open(...); and error encounter it says Microsoft C++ exception: _com_error at memory location'.



    i tried to do such things
    pRecordset->Open(SelectQuery, _variant_t(pConnection, true),adOpenForwardOnly, adLockReadOnly, adCmdText);
    but in the debug window it shows _hr: DB_E_NOTABLE Table Does not exist.
    i also tried to do such things
    pRecordset->Open("TestTB", _variant_t(pConnection, true),adOpenForwardOnly, adLockReadOnly, adCmdTable); but it doesn't help.



    Is this Connection problem? it would be vary usefull for me if you give me some advice. Thank you in advance.



    _ConnectionPtr pConnection;
    _CommandPtr pCommand;
    _RecordsetPtr pRecordset;

    _bstr_t strCon("ADOSQL"); //"Provider=sqloledb; Data Source=...\SQLEXPRESS;Initial Catalog=TestDB;Integrated Security=True");

    _bstr_t SelectQuery("Select * from TestTB");

    HRESULT hr = S_OK;
    CoInitialize(NULL);

    //Create the Connection pointer
    hr = pConnection.CreateInstance(__uuidof(Connection));
    if (FAILED(hr))

    printf("Error instantiating Connection objectn");


    //Open the SQL Server connection
    hr = pConnection->Open(strCon, "", "", adConnectUnspecified);
    if (FAILED(hr))

    printf("Error Opening Database object using ADO _ConnectionPtr n");


    hr = pCommand.CreateInstance(__uuidof(Command));
    if (FAILED(hr))

    printf("Error creating command instance[]");


    pCommand->ActiveConnection = pConnection;
    pCommand->CommandText = SelectQuery;
    pCommand->CommandType = adCmdText;

    hr = pRecordset.CreateInstance(__uuidof(Recordset));
    if (FAILED(hr))

    printf("Failed creating record set instancen");


    //CString SQLQuery = "Select * From TestTB";
    pRecordset->Open(_variant_t(pCommand), _variant_t(pConnection, true),adOpenForwardOnly, adLockReadOnly, adCmdText);









    share|improve this question


























      0












      0








      0








      i am trying to connect my C++ project to SQL Server using ADO it goes well before pRecordset->Open(...); and error encounter it says Microsoft C++ exception: _com_error at memory location'.



      i tried to do such things
      pRecordset->Open(SelectQuery, _variant_t(pConnection, true),adOpenForwardOnly, adLockReadOnly, adCmdText);
      but in the debug window it shows _hr: DB_E_NOTABLE Table Does not exist.
      i also tried to do such things
      pRecordset->Open("TestTB", _variant_t(pConnection, true),adOpenForwardOnly, adLockReadOnly, adCmdTable); but it doesn't help.



      Is this Connection problem? it would be vary usefull for me if you give me some advice. Thank you in advance.



      _ConnectionPtr pConnection;
      _CommandPtr pCommand;
      _RecordsetPtr pRecordset;

      _bstr_t strCon("ADOSQL"); //"Provider=sqloledb; Data Source=...\SQLEXPRESS;Initial Catalog=TestDB;Integrated Security=True");

      _bstr_t SelectQuery("Select * from TestTB");

      HRESULT hr = S_OK;
      CoInitialize(NULL);

      //Create the Connection pointer
      hr = pConnection.CreateInstance(__uuidof(Connection));
      if (FAILED(hr))

      printf("Error instantiating Connection objectn");


      //Open the SQL Server connection
      hr = pConnection->Open(strCon, "", "", adConnectUnspecified);
      if (FAILED(hr))

      printf("Error Opening Database object using ADO _ConnectionPtr n");


      hr = pCommand.CreateInstance(__uuidof(Command));
      if (FAILED(hr))

      printf("Error creating command instance[]");


      pCommand->ActiveConnection = pConnection;
      pCommand->CommandText = SelectQuery;
      pCommand->CommandType = adCmdText;

      hr = pRecordset.CreateInstance(__uuidof(Recordset));
      if (FAILED(hr))

      printf("Failed creating record set instancen");


      //CString SQLQuery = "Select * From TestTB";
      pRecordset->Open(_variant_t(pCommand), _variant_t(pConnection, true),adOpenForwardOnly, adLockReadOnly, adCmdText);









      share|improve this question
















      i am trying to connect my C++ project to SQL Server using ADO it goes well before pRecordset->Open(...); and error encounter it says Microsoft C++ exception: _com_error at memory location'.



      i tried to do such things
      pRecordset->Open(SelectQuery, _variant_t(pConnection, true),adOpenForwardOnly, adLockReadOnly, adCmdText);
      but in the debug window it shows _hr: DB_E_NOTABLE Table Does not exist.
      i also tried to do such things
      pRecordset->Open("TestTB", _variant_t(pConnection, true),adOpenForwardOnly, adLockReadOnly, adCmdTable); but it doesn't help.



      Is this Connection problem? it would be vary usefull for me if you give me some advice. Thank you in advance.



      _ConnectionPtr pConnection;
      _CommandPtr pCommand;
      _RecordsetPtr pRecordset;

      _bstr_t strCon("ADOSQL"); //"Provider=sqloledb; Data Source=...\SQLEXPRESS;Initial Catalog=TestDB;Integrated Security=True");

      _bstr_t SelectQuery("Select * from TestTB");

      HRESULT hr = S_OK;
      CoInitialize(NULL);

      //Create the Connection pointer
      hr = pConnection.CreateInstance(__uuidof(Connection));
      if (FAILED(hr))

      printf("Error instantiating Connection objectn");


      //Open the SQL Server connection
      hr = pConnection->Open(strCon, "", "", adConnectUnspecified);
      if (FAILED(hr))

      printf("Error Opening Database object using ADO _ConnectionPtr n");


      hr = pCommand.CreateInstance(__uuidof(Command));
      if (FAILED(hr))

      printf("Error creating command instance[]");


      pCommand->ActiveConnection = pConnection;
      pCommand->CommandText = SelectQuery;
      pCommand->CommandType = adCmdText;

      hr = pRecordset.CreateInstance(__uuidof(Recordset));
      if (FAILED(hr))

      printf("Failed creating record set instancen");


      //CString SQLQuery = "Select * From TestTB";
      pRecordset->Open(_variant_t(pCommand), _variant_t(pConnection, true),adOpenForwardOnly, adLockReadOnly, adCmdText);






      c++ sql sql-server sql-server-2008 ado






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      edited Mar 26 at 12:39







      Giorgi Gogenia

















      asked Mar 26 at 12:26









      Giorgi GogeniaGiorgi Gogenia

      35 bronze badges




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