Weirdness with ODBC API

[OneEyeMan]

Hi, guys,

                                    for( int count  = 0; count < i; count++ )
                                    {
                                        ret = SQLColAttribute( stmt_col, (SQLUSMALLINT ) count + 1, SQL_DESC_AUTO_UNIQUE_VALUE, NULL, 0, NULL, &autoincrement );
                                        if( ret != SQL_SUCCESS && ret != SQL_SUCCESS_WITH_INFO )
                                        {
                                            GetErrorMessage( errorMsg, 1, stmt_col );
                                            result = 1;
                                            SQLFreeHandle( SQL_HANDLE_STMT, stmt_col );
                                            stmt_col = 0;
                                            SQLDisconnect( hdbc_col );
                                            SQLFreeHandle( SQL_HANDLE_DBC, hdbc_col );
                                        }
                                        else
                                        {
                                            if( autoincrement )
                                            {
                                                ret = SQLColAttribute( stmt_col, (SQLUSMALLINT ) count + 1, SQL_DESC_BASE_COLUMN_NAME, NULL, 0, NULL, &autoincrement );
                                                if( ret != SQL_SUCCESS && ret != SQL_SUCCESS_WITH_INFO )
                                                {
                                                    GetErrorMessage( errorMsg, 1, stmt_col );
                                                    result = 1;
                                                    SQLFreeHandle( SQL_HANDLE_STMT, stmt_col );
                                                    stmt_col = 0;
                                                    SQLDisconnect( hdbc_col );
                                                    SQLFreeHandle( SQL_HANDLE_DBC, hdbc_col );
                                                }
                                                else
                                                    autoinc_fields.push_back( fieldName );
                                            }
                                        }
                                    }
                                }

For some reason this code above fails for SQLColAttribute().

The value of the count is 29 and the value of i is 51 and the error is "Invalid descriptor index", which according to the MSDN means "column is out of bounds".

I am trying to connect to MS SQL Server 10.0 from MSVC 2017 on Windows 8.1. It is for "INFORMATION_SCHEMA.ROUTINES" table. Server is running on the same machine.

Can anyone please explain this?

Thank you.