CRecordset "Invalid Descriptor Index "

Hi all,

Here's my code:

SQL = SELECT ID,X,Y,A,TYPEID, vid  FROM (SELECT ID,A,X,Y,TYPEID,  (SELECT TOP 1 ID FROM DETAILS d WHERE pos.ID = d.ID) AS vid, row_number() over (partition by ID order by CREATEDTIME desc) as rn FROM POST pos) AS ss WHERE rn = 1;

CDatabase* pDatabase = new CDatabase();
pDatabase->Open(_T(""),FALSE,FALSE,LPCTSTR(sDsn));
CRecordset rs( pDatabase );
rs.m_bUseODBCCursorLib = TRUE;
BOOL iReturn = rs.Open(SQL ,CRecordset::forwardOnly,CRecordset::readOnly);
while(!rs.IsEOF() )
{
    CDBVariant v;
    memset(&v,0,sizeof(CDBVariant));
            
  rs.GetFieldValue((short)0, v, SQL_C_SLONG);
   //always the ERROR here
}

I searched high and low, but so far unable to solve this.

Maybe there's something wrong with my SQL? But
this only happens on SQLServer (I tried different databases on different versions).
Works fine in DB2.

Please help.
trustworthyAsked:
Who is Participating?

Improve company productivity with a Business Account.Sign Up

x
 
trustworthyConnect With a Mentor Author Commented:
I can't figure this out, so I decided not to use CRecordset at all
0
 
jkrCommented:
Is that really your actual code? I am asking because

BOOL iReturn = rs.Open(SQL ,CRecordset::forwardOnly,CRecordset::readOnly);

Open in new window


really seems wrong, all versions of 'CRecordset::Open()' take 'nOpenType' as their 1st parameter and the SQL statement as the 2nd, see the docs at http://msdn.microsoft.com/en-us/library/1hkkwdf0%28v=vs.120%29.aspx

Also, what is the return value? Are you checking that one before calling 'GetFieldValue()'?
0
 
trustworthyAuthor Commented:
You're right, I copied the wrong statement, it is:

rs.Open(CRecordset::forwardOnly,sp_text,CRecordset::readOnly);

And yes, I do check the return value, and I see number of records returned in the rs properties.
0
A proven path to a career in data science

At Springboard, we know how to get you a job in data science. With Springboard’s Data Science Career Track, you’ll master data science  with a curriculum built by industry experts. You’ll work on real projects, and get 1-on-1 mentorship from a data scientist.

 
jkrCommented:
OK, and when you open the Data Set Visualizer in VS (just hover over the record set in the debugger and click on the magnifier symbol), do you get the results that you expected n terms of that query?
0
 
trustworthyAuthor Commented:
Yes, exactly what is expected. Same number of rows if I run the same query in any SQL program.
0
 
trustworthyAuthor Commented:
Bo other solution
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.