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mysql为什么不设主键就不能输入数据

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Release： 2016-06-06 09:35:30
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mysql数据

不知道怎么搞得，创建数据表的时候如果不设置主键的话这个表就会变成read only，不能输入数据，加上主键之后才能输入。这个是权限没弄对的问题吗？怎么改成不设置主键也可以输入数据？

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