The format option is used to format the column values of type numeric and varchar.

format 选项用于格式化 numeric 和 varchar 类型的列值。

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In the example, the format option is used to format varchar and decimal columns, ENAME, and SAL respectively.

在示例中，FORMAT选项分别用于格式化varchar和decimal列、ENAME和SAL。

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TIP: You can make a string field mandatory by either enabling the mandatory option in the XFDL format option or setting required to true in an XForms bind.

提示：可以通过启用xfdl格式选项中的必填选项或在XForms绑定中将必要选项设置为true来使字符串字段成为必填字段。

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This may not mean the end of all locks on books readable on Sony's device as the ePub format has an option to implement copyright controls.

BBC: Sony to back open e-book format

Take Spotify, the European start-up based in the UK. It hit on a subscription-based format to provide an a la carte option to listen to music.

FORBES: The Future Of Media Must Answer Two Questions

Now, with studio support split, dual-format is starting to look like a more viable option.

ENGADGET: Switched On: Seeking neutrality in the hi-def format war