When you select this option, a database column defined with a Date data type is defined in the type tree as a character text string.

如果选择这个选项，定义为Date数据类型的数据库列在类型树中定义为一个字符文本字符串。

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The first time around, the templated version of f is called, with a string as the first argument type, and the character and double are packed off as the variable size argument.

首先调用 f 的模板化版本，第一个参数的类型是字符串，作为大小可变的参数提供字符和双精度值。

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Your constants can be integer, character, floating-point, string, Boolean, octet or enumerated but not of type any or a user-defined type. Here are some examples.

常数可以是整数、字符、浮点数、字符串、Boolean、octet或枚举型，但不能是any类型或用户定义的类型。

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