Message in Chinese (Simplified) (中文(简体))![](/img/flags/zh-chs.png)
只能对计算列创建 UNIQUE 或 PRIMARY KEY 约束,CHECK、FOREIGN KEY 和 NOT NULL 约束要求计算列是持久化的。
Unlocalized message![](/img/flags/en.png)
Only UNIQUE or PRIMARY KEY constraints can be created on computed columns, while CHECK, FOREIGN KEY, and NOT NULL constraints require that computed columns be persisted.
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