Method move_next

dlib/sqlite/sqlite.h:177–208

        }

        bool move_next (
        )
        {
            if (step_status == SQLITE_ROW)
            {
                if (at_first_step)
                {
                    at_first_step = false;
                    return true;
                }
                else
                {
                    step_status = sqlite3_step(stmt);
                    if (step_status == SQLITE_DONE)
                    {
                        return false;
                    }
                    else if (step_status == SQLITE_ROW)
                    {
                        return true;
                    }
                    else
                    {
                        throw sqlite_error(sqlite3_errmsg(db.get()));
                    }
                }
            }
            else
            {
                return false;
            }
        }

        unsigned long get_num_columns(
        ) const