With inline methods, SQL statements are declared or constructed at runtime, and passed as instances of String to common Data interface methods.

在内联风格中，sql语句是在运行时声明或构造的，并作为String的实例传递给公共的Data接口方法。

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The type specified must be derived from the declared type or a special simple type definition called xs: error (which has no valid instances).

指定的type必须派生于声明的类型或称为xs： error的特殊简单类型定义(没有有效实例)。

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Any member declared with the protected keyword is visible only to the defining type, including other instances of the same type and any derived types.

任何用protected关键字声明的成员只对定义它的类型，包括其实例和任何继承类型可见。

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