Sam O'Connor wrote:
> I'm having a problem getting large objects to work with the IDS ODBC
> driver from MS VC++.
> I'm Using the MFC CRecordset class to talk to the ODBC driver.
> When I try to add a record with a large object stored in a CLongBinary
> I get the message below ( see dbms output). If I dont flag the column as
> dirty and not NULL, causing the blob to be ignored, the rest of the row
> gets updated properly. When I do flag the blob dirty and not NULL then
> the driver returns SQL_NEED_DATA in the MFC code and causes
> SendLongBinaryData to be called. This sends all the data through then
> just before exiting calls SQLParamData again which fails with the error
> message.
> Below is the error message, the MS code, my setup info and my code.
> If anyone can point out what I am doing wrong I would greatly appreciate
> it.
> If anyone has a completly different better way to do it that would be
> just as good.
> Some working example code would be best of all.
> (If any extra information would be useful I'd be happy to provide it.)
> Thanks
> Sam O'Connor
>
> ---- dbms output ----
>
> ERROR: parser: attribute 'bitmap' is of type 'lo' but expression is of
> type 'int4'
> You will need to rewrite or cast the expression (1)
>
Please send the driver log which shows the query that is generating the
above failure. Either the driver's commlog or the odbc trace log would do.
The more info the better.
BTW, I have tested the driver with large objects in MS Access and it seems
to work fine -- I can send and receive OLE objects from/to the database.
So, perhaps its something in MFC that needs to be tweeked.
Byron
