CON

我发现在存储过程中进行大量的处理会使您的DB服务器在扩展您的行为时成为一个单一的不灵活点。

然而，如果您有多个服务器运行您的代码，那么在您的程序中进行所有这些处理而不是sql-server，可能会允许您进行更多的扩展。当然，这并不适用于只进行正常获取或更新的存储procs，而是适用于执行更多处理(如在数据集上循环)的存储procs。

PROS

Performance for what it may be worth (avoids query parsing by DB driver / plan recreation etc) Data manipulation is not embedded in the C/C++/C# code which means I have less low level code to look through. SQL is less verbose and easier to look through when listed separately. Due to the separation folks are able to find and reuse SQL code much easier. Its easier to change things when schema changes - you just have to give the same output to the code and it will work just fine Easier to port to a different database. I can list individual permissions on my stored procedures and control access at that level too. I can profile my data query/ persistence code separate from my data transformation code. I can implement changeable conditions in my stored procedure and it would be easy to customize at a customer site. It becomes easier to use some automated tools to convert my schema and statements together rather than when it is embedded inside my code where I would have to hunt them down. Ensuring best practices for data access is easier when you have all your data access code inside a single file - I can check for queries that access the non performant table or that which uses a higher level of serialization or select *'s in the code etc. It becomes easier to find schema changes / data manipulation logic changes when all of it is listed in one file. It becomes easier to do search and replace edits on SQL when they are in the same place e.g. change / add transaction isolation statements for all stored procs. I and the DBA guy find that having a separate SQL file is easier / convenient when the DBA has to review my SQL stuff. Lastly you don't have to worry about SQL injection attacks because some lazy member of your team did not use parametrized queries when using embedded sqls.

存储过程的优点 1).提高安全性，因为存储过程中的SQL本质上是静态的(大多数)。这将防止SQL注入。 2)。可重用性。如果需要为多个应用程序/组件返回相同的数据，这可能是一个更好的选择，而不是重复SQL语句。 3).减少客户端与数据库服务器之间的调用。

我不确定其他数据库，但您可以在大型机上的db2中使用主机语言创建存储过程，这使得它们非常强大。

我参加的Microsoft TechEd安全会议的建议之一是，通过存储过程进行所有调用，并拒绝直接访问表。这种方法被宣传为提供额外的安全性。我不确定仅仅为了安全性是否值得这样做，但如果您已经在使用存储过程，那么这样做也无妨。

坚定地站在“存储过程不利于CRUD/业务逻辑使用”的阵营。我了解在报告、数据导入等方面的需求

写在这里…

你的编程语言和应用程序框架可能是:

高级的，特别是与SQL相比 易于通过自动化流程进行版本和部署，特别是与SQL相比

如果这两个条件是两个，则跳过存储过程。

对于Microsoft SQL Server，您应该尽可能使用存储过程来帮助执行计划缓存和重用。为什么要优化计划重用?因为生成执行计划的成本相当高。

Although the caching and reuse of execution plans for ad-hoc queries has improved significantly in later editions of SQL server (especially 2005 and 2008) there are still far fewer issues with plan reuse when dealing with stored procedures than there are for ad-hoc queries. For example, SQL server will only re-use an execution plan if the plan text matches exactly - right down to comments and white space, for example, if each of the following lines of SQL were to be executed independently, none of them would use the same execution plan:

SELECT MyColumn FROM MyTable WHERE id = @id
select MyColumn from MyTable WHERE id = @id
SELECT MyColumn  FROM MyTable WHERE id = @id
SELECT MyColumn FROM MyTable WHERE id = @id -- "some comment"
SELECT MyColumn FROM MyTable WHERE id = @id -- "some other comment"

除此之外,如果你不显式地指定类型的参数然后有一个好的机会,SQL Server可能出错,例如如果您执行上面的查询与输入4,然后用@ id查询SQL Server将parametrise SMALLINT(或可能是一个非常小的整数),所以如果你然后执行相同的查询@ id的说4000,SQL Server将parametrise INT,而不会重用相同的缓存。

我认为还有其他一些问题，老实说，大多数问题都可以解决——特别是在SQL Server的后续版本中，但是存储过程通常会提供更多的控制。