本文介绍了存储过程和用户定义函数之间的区别的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
任何人都可以解释存储过程和用户定义函数之间的确切区别，以及在哪些上下文中有用的是什么。
Can anyone please explain what is the exact difference between stored procedures and user defined functions and in which context what is useful?
推荐答案
p>这是我总是记住：）
This is what i always keep in mind :)
- 过程可以返回零或n值，而函数可以返回一个必须的值
- 过程可以有输入/输出参数，而函数只能有输入参数。
- 过程允许select和DML语句
- 函数可以从过程调用，而不能从函数调用过程。
- 异常可以通过try / catch块在一个过程中，而try-catch块不能在函数中使用。
- 我们可以在过程中进行事务管理，而我们不能进入函数。 >
- 程序不能在select语句中使用，而函数可以嵌入到select语句中。
- UDF可以在WHERE / HAVING / SELECT section where as存储过程不能。
- 返回表的UDF可以被视为另一个行集。
- 内联UDF可以是带有参数的视图，可以在JOIN和其他Rowset操作中使用。
- Procedure can return zero or n values whereas function can return one value which is mandatory.
- Procedures can have input/output parameters for it whereas functions can have only input parameters.
- Procedure allows select as well as DML statement in it whereas function allows only select statement in it.
- Functions can be called from procedure whereas procedures cannot be called from function.
- Exception can be handled by try-catch block in a procedure whereas try-catch block cannot be used in a function.
- We can go for transaction management in procedure whereas we can't go in function.
- Procedures can not be utilized in a select statement whereas function can be embedded in a select statement.
- UDF can be used in the SQL statements anywhere in the WHERE/HAVING/SELECT section where as Stored procedures cannot be.
- UDFs that return tables can be treated as another rowset. This can be used in JOINs with other tables.
- Inline UDF's can be though of as views that take parameters and can be used in JOINs and other Rowset operations.
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