Hello,
I am using VC++ 6.o and trying to call oracle stored procedures with ADO.
I have attached the below code which is executed after establishing a connection with the database using a ODBC driver.
this code throws an exception when i am trying to retrieve the record set.
also can u suggest some sites/books anything else for my reference.
the procedure "spproc" is as below:
/**********************
create procedure spproc
num number;
begin
select bay_no into num from bay_dtl where rownum =1;
end;
/*****************
the bay no is an integer in the bay_dtl table.
/*********code*********
try
{
_CommandPtr pCommand;
_ParameterPtr pParam1;
HRESULT hr = pCommand.CreateInstance (__uuidof (Command));
if (FAILED (hr))
{
AfxMessageBox ("Can't create an instance of Command");
return;
}
pCommand->ActiveConnection = m_pConn;
pCommand->CommandText = "spproc";
pCommand->CommandType = adCmdStoredProc;
_RecordsetPtr pRecordset;
hr = pRecordset.CreateInstance (__uuidof (Recordset));
if (FAILED (hr))
{
AfxMessageBox ("Can't create an instance of Recordset");
return;
}
pRecordset = pCommand->Execute(NULL,NULL,adCmdStoredProc);
CString strContent;
/* throws an exception here
strContent = (char *) (_bstr_t) pRecordset->Fields->GetItem ("bay_no")->Value;
AfxMessageBox(strContent);
}
thanks in advance
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