EXEC user-defined variable EXEC的用法和樣例：
例句
- The value of a user-defined variable can be a literal or an expression.
用戶(hù)定義變量的值可以是文字或表達式。 - The user-defined variables that are used in parameter bindings are usually defined with data types that are compatible with the data types of parameters to which they are mapped.
在參數綁定中使用的用戶(hù)定義變量通常是以與映射到它們的參數的數據類(lèi)型兼容的數據類(lèi)型來(lái)定義的。
