马春杰杰使用MySQL新建表的时候，会提示：
Current selection does not contain a unique column. Grid edit, checkbox, Edit, Copy and Delete features are not available.
这句话意思是说，由于缺少独一无二的列，所以一些多选框、编辑啥的功能就不能用，就像下面这样：
![[MySQL]Current selection does not contain a unique column. Grid edit, checkbox, Edit, Copy and Delete features are not available.](https://ypyssl.machunjie.com/machunjie/20190916160207.png_machunjie.png)
而实际上我们想要的是这样的效果：
![[MySQL]Current selection does not contain a unique column. Grid edit, checkbox, Edit, Copy and Delete features are not available.](https://ypyssl.machunjie.com/machunjie/20190916160149.png_machunjie.png)
解决方法：
![[MySQL]Current selection does not contain a unique column. Grid edit, checkbox, Edit, Copy and Delete features are not available.](https://ypyssl.machunjie.com/machunjie/zhujian.gif_machunjie.png)
[MySQL]Current selection does not contain a unique column. Grid edit, checkbox, Edit, Copy and Delete features are not available.
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