将auto_increment值设置为旧表项

Question

i have in one table two fields (title, content) and i inserted some values...: 我在一个表中有两个字段（标题，内容），并且我插入了一些值...：

+--------------------------------------+--------------------------+
| title                                | content                  |
+--------------------------------------+--------------------------+
| hello word                           | this is my first content |
+--------------------------------------+--------------------------+
| smoke Smoking is bad for your health | But i love it            |
+--------------------------------------+--------------------------+

if I add a auto_increment field called ID, the previously input values take ID = 0: 如果我添加一个名为ID的auto_increment字段，则先前输入的值将ID设为0：

+---+--------------------------------------+--------------------------+
|ID | title                                | content                  |
+---+--------------------------------------+--------------------------+
| 0 | hello word                           | this is my first content |
+---+--------------------------------------+--------------------------+
| 0 | smoke Smoking is bad for your health | But i love it            |
+---+--------------------------------------+--------------------------+

and i need this: 我需要这个：

+---+--------------------------------------+--------------------------+
|ID | title                                | content                  |
+---+--------------------------------------+--------------------------+
| 1 | hello word                           | this is my first content |
+---+--------------------------------------+--------------------------+
| 2 | smoke Smoking is bad for your health | But i love it            |
+---+--------------------------------------+--------------------------+

The only way to set correct ID to old values is php+foreach? 将正确的ID设置为旧值的唯一方法是php + foreach？ or i forgot something to do with sql/mysql to takes faster and automatically the correct ID values? 还是我忘记了与sql / mysql的关系，以便更快地自动获取正确的ID值？

Thanks for help. 感谢帮助。

Answer 1

ALTER TABLE MyTable
ADD ID INT IDENTITY

Answer 2

Well,now its my time to help you :P. 好吧，现在是我该为您服务的时间了：

You puts SQL code in a php page or in phpmyadmin online code editor? 您将SQL代码放在php页面或phpmyadmin在线代码编辑器中？ Sometimes phpmyadmin online editor fails, try it in your php page and it works fine. 有时phpmyadmin在线编辑器会失败，请在您的php页面中尝试一下，即可正常工作。

将auto_increment值设置为旧表项

问题描述

2 个解决方案

解决方案1
2 2012-09-09 22:48:19

解决方案2
2 已采纳 2012-09-09 22:59:42

将auto_increment值设置为旧表项

问题描述

2 个解决方案

解决方案1 2 2012-09-09 22:48:19

解决方案2 2 已采纳 2012-09-09 22:59:42

解决方案1
2 2012-09-09 22:48:19

解决方案2
2 已采纳 2012-09-09 22:59:42