这段时间开始学习写存储过程，主要原因还是因为工作需要吧，本来以为很简单的，但几经挫 折，豪气消磨殆尽，但总算搞通了，为了避免后来者少走弯路，特记述与此，同时亦对自己进行 鼓励。-Writing studying this period of time beginning the process of storage, mainly because it required work, originally thought it would be easy, but after severa