DOCUMENT:Q125226  29-JUL-2001  [visualc]
TITLE   :PRB: ODBC Reserved Word in a RFX Function Causes Syntax Error
PRODUCT :Microsoft C Compiler
PROD/VER:winnt:
OPER/SYS:
KEYWORDS:kbprb

======================================================================
-------------------------------------------------------------------------------
The information in this article applies to:

 - The Microsoft Foundation Classes (MFC), included with:
    - Microsoft Visual C++, versions 1.50, 1.51 
    - *EDITOR Please do not choose this product*Microsoft Visual C++ 32-bit Edition* use 241, 265, 225, version 2.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

An attempt to update a data source produces a command failed message box and MFC
Trace output:

   Syntax error in UPDATE statement.
   State:37000,Native:-3503,Origin:
   [Microsoft][ODBC Microsoft Access 2.0 Driver]

CAUSE
=====

Using an ODBC reserved word as the second parameter (char* szName) in an RFX
function causes the syntax error. The parameter represents the table's column
name. For example, the following code causes the error:

   void CMyRecordset::DoFieldExchange(CFieldExchange *pFX)
   {
   ...

     RFX_Date(pFX, "date", ...); // error "date" is ODBC reserved word!

   ...
   }

NOTE: Another scenario that will cause a similar error is caused by using a
reserved Access word for a table name, then trying to insert the table via MFC
and ODBC.

RESOLUTION
==========

Implement one of the following solutions:

 - Change the name of the column in the data source's table. For example, change
   DATE to BIRTHDATE. DATE is a reserved word.

-or-

 - Enclose the column name in square brackets when you use it in the RFX
   function in CRecordset::DoFieldExchange. For example:

   change this:

         RFX_Date (pFX, "Date",...);

   to this:

         RFX_Date(...,"[Date]",...);

-or-

 - Qualify the column name with a table name (as MSQuery does) in the RFX
   function in CRecordset::DoFieldExchange. For example,

   Change this:

         RFX_Date(..., "Date",...);

   to this:

         RFX_Date(..., "table1.Date",...);

MORE INFORMATION
================

For a list of ODBC reserved words, see Appendix C of the ODBC Programmer's
Reference.

Additional query words: 1.50 2.00 2.50 2.51 3.00 update reserved keyword

======================================================================
Keywords          : kbprb 
Technology        : kbAudDeveloper kbMFC
Version           : winnt:
Issue type        : kbprb

=============================================================================

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS
PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND.  MICROSOFT DISCLAIMS
ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES
OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  IN NO
EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR
ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL,
CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF
MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.  SOME STATES DO NOT ALLOW THE EXCLUSION
OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES
SO THE FOREGOING LIMITATION MAY NOT APPLY.

Copyright Microsoft Corporation 2001.