推断的型别可能是内建型别、匿名型别、使用者定义型别，或。
The inferred type may be a built-in type, an anonymous type, a user-defined type, or a type defined in the.
使用它可启用使用者定义型别和其他型别之间的隐含转换，但前提是要保证转换作业不会导致资料的遗失。
Use it to enable implicit conversions between a user-defined type and another type, if the conversion is guaranteed not to cause a loss of data.
由于无法保证规则运算式产生器一定会产生唯一的值，所以您不能使用它来填满具有唯一条件约束的使用者定义型别资料行。
Because the Regular Expression generator is not guaranteed to produce unique values, you cannot use it to fill a user-defined type column that has a unique constraint.
这是因为复合实值型别(例如使用者定义的结构)没有任何有效的预设值。
This is because a composite value type, such as a user-defined structure, has no valid default value.
使用者定义具型别阵列或常数阵列所指定的初始设定式过少。
Too few initializers were specified for an array of user-defined types or constants.
它也具有开放型别系统，因此必须包含广泛的基础结构，以对应使用者定义的型别。
It also has an open type system and therefore must contain extensive infrastructure to map user-defined types.
它也具有开放型别系统，因此必须包含广泛的基础结构，以对应使用者定义的型别。
It also has an open type system and therefore must contain extensive infrastructure to map user-defined types.
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