Hi,
developing in MFC/Visual Studio 6 I've encountered a strange problem
in last version of ODBC Driver (actually 07_01_0005). Each time a SQL
error occours, the istructions TRY/ CATCH doesn't report the error
string: the CDBException ' member m_strError is empty
Follows an example:
// MFC C++ Code
CDatabase myDB;
[.....] // Init and Open database...
//create a table with a WRONG SQL statement:
CString sSQLStatement="CREATE TABLE Dummy ( int DummyID, )";
// The statement is WRONG beacuse the comma
after the last column definition.
//Executes The statement and catch errors:
TRY
{
myDB.ExecuteSQL(sSQLStatement);
}
CATCH(CDBException, e)
{
AfxMessageBox(e->m_strError);
}
END_CATCH
Well, with driver version v06-50-0000 i got the string "Error
creating the table; ERROR: parser: parse error at or near ")", that
it is the correct error message from the back-end.
Instead, with Version 07_01_0005 of the ODBC driver, the string
e->m_strError is always empty, and the member m_nRetCode of
CDBException class is = -1;
Handling errors with C++ exception is a great thing, i thing this is a
bug of ODBC driver. The only way to discover the SQL errors reported
by the back-end is to analyze the driver connection log, after each
SQLExecute failed istruction, and it is not very very confortable for
the programmer :)
Thank you.
Silvio. mister_ics@hotmail.com
