[Okta Webinar] Learn how to a build a cloud-first strategyRegister Now

x
?
Solved

CRecordset "Invalid Descriptor Index "

Posted on 2014-04-15
6
Medium Priority
?
526 Views
Last Modified: 2014-04-22
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.
0
Comment
Question by:trustworthy
  • 4
  • 2
6 Comments
 
LVL 86

Expert Comment

by:jkr
ID: 40002070
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
 

Author Comment

by:trustworthy
ID: 40002149
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
 
LVL 86

Expert Comment

by:jkr
ID: 40003107
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
Veeam and MySQL: How to Perform Backup & Recovery

MySQL and the MariaDB variant are among the most used databases in Linux environments, and many critical applications support their data on them. Watch this recorded webinar to find out how Veeam Backup & Replication allows you to get consistent backups of MySQL databases.

 

Author Comment

by:trustworthy
ID: 40003726
Yes, exactly what is expected. Same number of rows if I run the same query in any SQL program.
0
 

Accepted Solution

by:
trustworthy earned 0 total points
ID: 40007642
I can't figure this out, so I decided not to use CRecordset at all
0
 

Author Closing Comment

by:trustworthy
ID: 40014367
Bo other solution
0

Featured Post

How to Use the Help Bell

Need to boost the visibility of your question for solutions? Use the Experts Exchange Help Bell to confirm priority levels and contact subject-matter experts for question attention.  Check out this how-to article for more information.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Why is this different from all of the other step by step guides?  Because I make a living as a DBA and not as a writer and I lived through this experience. Defining the name: When I talk to people they say different names on this subject stuff l…
Recently we ran in to an issue while running some SQL jobs where we were trying to process the cubes.  We got an error saying failure stating 'NT SERVICE\SQLSERVERAGENT does not have access to Analysis Services. So this is a way to automate that wit…
The viewer will learn how to user default arguments when defining functions. This method of defining functions will be contrasted with the non-default-argument of defining functions.
The viewer will be introduced to the technique of using vectors in C++. The video will cover how to define a vector, store values in the vector and retrieve data from the values stored in the vector.

872 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question