Saving changes is not permitted. The changes you have made require the following tables to be dropped and re-created. You have either made changes to a table that can’t be re-created or enabled the option Prevent saving changes that require the table to be re-created
如下图:
点击 Cancel 后会弹出另一个对话框,如下图:
解决方法
打开工具-选项,如下图:
在选项对话框中选择:Designers―Table and DataBase Designers ,将右边的Prevent saving changes that require table re-creation 前的勾选去掉,如下图:
点击OK后,表的结构就可以随意修改保存了
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