SqlLite prepare_v2错误

Question

我正在用c ++开发一个应用程序，但是当程序到达sqlite3_prepare_v2语句时出现错误

这是代码，非常感谢您的帮助！

int Database::save_lesson (Lesson *lesson) {
    int id ;
    std::ostringstream oss ;

    oss << "insert into lesson (name, teacher, place, begin, end)" ;
    oss << "values ( " ;
    oss << "'" << lesson->get_name()    << "', " ;
    oss << "'" << lesson->get_teacher() << "', " ;
    oss << "'" << lesson->get_slots() << "', "  ;
    oss << "'" << lesson->get_begin() << "', "  ;
    oss << "'" << lesson->get_end()   << "') ;" ;

    check (sqlite3_prepare_v2 (
            db,
            oss.str().c_str(),
            -1,
            &stmt,
            0)
    ) ;
    sqlite3_step(stmt) ;
    sqlite3_finalize(stmt) ;

    oss.clear();
    oss.str("");

    oss << "select max(id) from lesson ;" ;
// error occured here:
    check (sqlite3_prepare_v2 (
            db,
            oss.str().c_str(),
            -1,
            &stmt,
            0)
    ) ;
    sqlite3_step(stmt) ;
    id = sqlite3_column_int(stmt, 0) ;
    sqlite3_finalize(stmt) ;

    return id ;
}

修改 错误消息为：bad parameter or other API misuse（非常有用）