Row identifier (RID_BIT or RID) built-in function: This built-in function can be used in the SELECT list or predicates statement.

行标识符(RID_BIT或RID)内置函数：该内置函数可用于SELECT列表或谓词语句。

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Set if the column contains a persistent row identifier that cannot be written to, and has no meaningful value except to identify the row.

如果列包含无法向其写入的持久性行标识符，并且除了标识行外没有其他有意义的值，则应设置该值。

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Set if the column contains a persistent row identifier that cannot be written to, and has no meaningful value except to identity the row.

如果列包含无法写入的不变的行标识符，并且除了标识行外没有其他有意义的值，则设置该值。

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