sql_field_c sql_result_c::fetch_field( unsigned int field_idx )
{
   if ( query && res )
   {
      MYSQL_FIELD *field = mysql_fetch_field_direct( res, field_idx );
      return sql_field_c( field );
   }

   return sql_field_c();
}
sql_field_c sql_result_c::fetch_field(unsigned int index)
{
    return res ? sql_field_c(mysql_fetch_field_direct(res, index)) : sql_field_c();
}