本文介绍了不使用try catch重写的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

数据库中的ID以abc_001,abc_002的形式保存,或者它们可能是abc_asd,abc_a12

我运行一个代码来检查ID的最高数字后缀。,它将返回 3


这里是代码。

IDs in the database are saved in the form of abc_001, abc_002 or they may be abc_asd, abc_a12

I run a code to check the highest numerical suffix of the ids.
in the above case, it would return 3.

Here''s the code for that.

展开 | 选择 | Wrap | 行号

推荐答案


展开 | 选择 | Wrap | 行号




实际上它看起来有点复杂。 Ids,不仅可以是 abc_001 的形式,还可以是 xyz_001 abc_xxx 或简单地 abcdef 。而且ID不是由用户制作的,而是由管理员制作的。因此,如果他输入前缀 abc 并想要生成10个ID,Ajax将检查数据库中所请求后缀的最高前缀(我正在做给定的代码片段并弹出一个div,其中一个表单显示那些10个ID的注册。所以自动增量无法解决。希望你了解我的情况。


谢谢:)

Harpeet

Actually its a little bit complex than it seems. Ids, can not only be in the form of abc_001, but also xyz_001 or abc_xxx or simply abcdef. And Ids are not made by user, but by an administrator. So if he will enter a prefix say abc and want to generate 10 ids, Ajax will check for the highest prefix with that requested suffix in the database (with I am doing in the given snippet) and pop-up a div with a form showing registration for those 10 ids. So auto increment was no solution. Hope you understand my situation.

Thanks :)
Harpeet


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08-20 11:27
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