[英]CLR Assembly C# inside SQL Server
The table (which I would pass to ASSEMBLY) is computed in other stored proc... 该表(我将传递给ASSEMBLY的表)是在其他存储过程中计算的...
I am thinking something like this. 我在想这样的事情。
-- I have a stored proc that gets a table, let it be myStoredProcTable
--FIST ENABLE DATA ACCESS
EXEC sp_serveroption 'TheServerName', 'DATA ACCESS', TRUE
--main.sql calls yStoredProcTable.sql and the calls functionAssembly
SELECT *
INTO #tmpTable
FROM OPENQUERY(SERVERNAME, 'EXEC test.dbo.myStoredProcTable 1')
-- pass the table to assembly
-- how would i pass the table to assembly code?, Is this POSSIBLE?
EXEC functionAssembly #tmpTable
------------------------------------------edit - - - - - - - - - - - - - - - - - - - - - 编辑
Following @faester
answer: - How could I use XML in the code, I suggested to use the numberTOstring
thing, but I guess XML
option is the best here... @faester
回答如下:-如何在代码中使用XML,我建议使用numberTOstring
,但我想XML
选项是最好的选择...
Again, I really do this, even if is not the best choice... 再说一次,即使不是最佳选择,我也确实做到了。
Yes you can register assemblies, but it is rarely a good idea due to performance issues. 是的,您可以注册程序集,但是由于性能问题,这很少是一个好主意。
But if you make complex numeric calculations or similar operations on scalar values it can give you a lot of flexibility. 但是,如果您对标量值进行复杂的数字计算或类似的操作,则可以为您带来很大的灵活性。 But the problem remains that SQL is natively set oriented which C# isn't, so you will easily run into mismatches. 但是问题仍然在于,SQL本质上是面向集合的,而C#不是,因此您很容易遇到不匹配的情况。
You should also be aware that you can only import static members on static classes. 您还应该知道,您只能在静态类上导入静态成员。
But an example This class - which intentionally doesn't have a namespace since it seems to be impossible to import classes in a namespace. 但是有一个例子此类-故意没有名称空间,因为似乎无法在名称空间中导入类。
public static class Math
{
[Microsoft.SqlServer.Server.SqlFunction]
public static int Add(int a, int b)
{
return a + b;
}
[Microsoft.SqlServer.Server.SqlProcedure]
public static void Void(int a, int b)
{
}
}
It takes some SQL to get the server ready and you probably need to be admin. 需要一些SQL才能准备好服务器,您可能需要成为管理员。
EXEC SP_CONFIGURE 'clr enabled', 1
GO
RECONFIGURE
GO
-- CONSIDER: DROP ASSEMBLY SqlClr
GO
CREATE ASSEMBLY SqlClr
FROM 'pathtoassembly'
WITH PERMISSION_SET = SAFE;
GO
SELECT * FROM sys.assemblies
GO
CREATE FUNCTION [MathAdd] (@a int, @b int)
RETURNS INT
AS EXTERNAL NAME [SqlClr].Math.[Add]
GO
CREATE PROCEDURE [Void] @a INT, @b INT
AS EXTERNAL NAME [SqlClr].Math.[Void]
GO
SELECT dbo.MathAdd (1, 2)
EXEC void 1, 2
AGAIN: You really should be confident that you need this, it is rarely a good idea! 再次:您真的应该确信自己需要这个,这绝不是一个好主意! (I have used it once for email validation making dns lookups etc, but that was on a system where all business logics was written in SQL. And that is bad!) (我曾经将它用于电子邮件验证以及dns查找等工作,但这是在所有业务逻辑都用SQL编写的系统上的。这很糟糕!)
Some useful references: 一些有用的参考:
http://msdn.microsoft.com/en-us/library/ms189524.aspx http://msdn.microsoft.com/en-us/library/ms189524.aspx
http://www.codeproject.com/KB/database/CLR_in_Sql_Server_2005.aspx http://www.codeproject.com/KB/database/CLR_in_Sql_Server_2005.aspx
使用SQL CLR执行您描述的确切功能。
It is possible . 有可能 。 (But read the comments). (但请阅读评论)。
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