将 UDF 与 SQL Query 一起使用时出错

Posted 2023-04-13

【中文标题】将 UDF 与 SQL Query 一起使用时出错

【英文标题】：Getting error when using UDF with SQL Query

【发布时间】：2014-03-20 09:29:59

【问题描述】：

我已经通过在 Visual Studio 中使用 SQL 项目模板制作了一个 CLR，使用语言 C# as::

  [Microsoft.SqlServer.Server.SqlFunction()]
    public static SqlDateTime ScalarUDF(SqlInt64 CompanyID)
    
        SqlInt64 temp = CompanyID;
        string zoneId = "Singapore Standard Time";
        TimeZoneInfo tzi = TimeZoneInfo.FindSystemTimeZoneById(zoneId);
        DateTime result = TimeZoneInfo.ConvertTimeFromUtc(DateTime.UtcNow, tzi);

        return new SqlDateTime(result);
    

并且还使用 query:: 将 UDF 创建到 SQL 中

-- Install Assembly
CREATE ASSEMBLY UDF_Trial FROM 'C:\Users\Rahul\Documents\visual studio 2013\Projects\UDF_Trial\UDF_Trial\bin\Debug\UDF_Trial.dll'
GO
-- Create ScalarUDF
CREATE FUNCTION [dbo].[ScalarUDF](@CompanyID bigint)
RETURNS datetime
WITH EXECUTE AS CALLER
AS
EXTERNAL NAME UDF_Trial.UserDefinedFunctions.ScalarUDF;
GO

但是在执行 UDF 时我遇到了一些错误：

我正在执行 UDF，

select [dbo].[ScalarUDF](15)

但获取异常为::

Msg 6522, Level 16, State 2, Line 2
A .NET Framework error occurred during execution of user-defined routine or aggregate "ScalarUDF": 
System.Security.HostProtectionException: Attempted to perform an operation that was forbidden by the CLR host.

The protected resources (only available with full trust) were: All
The demanded resources were: MayLeakOnAbort

System.Security.HostProtectionException: 
   at UserDefinedFunctions.ScalarUDF(SqlInt64 CompanyID)
.

在创建 Assembly 时，我还授予了 UNSAFE 的权限：：

从“C:\Users\Rahul\Desktop\pro_temp\UDF_Trial.dll”创建组件 UDF_Trial WITH PERMISSION_SET = 不安全； 去吧

但在这种情况下，我收到错误为::

CREATE ASSEMBLY for assembly 'UDF_Trial' failed because assembly 'UDF_Trial' is not authorized for PERMISSION_SET = UNSAFE.  The assembly is authorized when either of the following is true: the database owner (DBO) has UNSAFE ASSEMBLY permission and the database has the TRUSTWORTHY database property on; or the assembly is signed with a certificate or an asymmetric key that has a corresponding login with UNSAFE ASSEMBLY permission.

【问题讨论】：

可能重复***.com/questions/6568751/…

@MoslemBenDhaou 给出正确的答案，而不是查看其他人的答案。

提问前请阅读 *** 指南。 ***.com/help/duplicates

【参考方案1】：

我已将数据库的可信度设置为 ON：：

ALTER DATABASE Learn SET TRUSTWORTHY ON

并将程序集创建为 ::

CREATE ASSEMBLY UDF_Blog FROM 'C:\Users\Rahul\Documents\visual studio 2013\Projects\UDF_Trial\UDF_Trial\bin\Debug\UDF_Trial.dll'
WITH PERMISSION_SET = UNSAFE;
GO

问题就解决了。