BUG: SQLNumResultCols May Fail After Prepared SQL Statement (124899)

The information in this article applies to:

Microsoft Open Database Connectivity 1.0
Microsoft Open Database Connectivity 2.0

This article was previously published under Q124899

BUG# AddonBugs: 10888 (1.02.3231)

SYMPTOMS

After preparing a SELECT statement, a call to an ODBC meta data function call, such as SQLDescribeCol, SQLNumResultCols, and SQLColAttributes, fails with the message:

Syntax error near 'where'

This happens only if the above functions are called after SQLPrepare has been called but before SQLExecute has been called. The following code demonstrates the problem:

   SQLPrepare(hstmt, "select sum(qty) from sales group by stor_id")
   SQLNumResultCols(hstmt, &col)  ==> SQL_ERROR
   SQLError() ==> "Syntax error near 'where'"

CAUSE

The SQL Server driver is sending an improperly constructed SQL statement to SQL Server at the time SQLNumResultCols, SQLDescribeCol, and SQLColAttributes are called.

WORKAROUND

Because this problem appears only if SQLExecute has not been called, it is recommended that meta data function calls be called after both SQLPrepare and SQLExecute have been called.

STATUS

Microsoft has confirmed this to be a problem in the 16-bit Microsoft SQL Server driver version 1.02.3231 and 32-bit SQL Server driver version 2.00.1912. We are researching this problem and will post more information here in the Microsoft Knowledge Base as it becomes available.

Modification Type:	Major	Last Reviewed:	7/27/2001
Keywords:	kbBug KB124899