To make faster our client database solution we need to use the our c++ native dll-library from UDF. I read several articles about registering the UNSAFE Assemblies on MSDN and other sources (i skip references to avoid the spam links) - all instructions works fine on MS SQLSRV 2008 (x64) and NOT WORKS on MS SQLSRV 2014 (x64)! - on this version my UDF freeze if dll-imported function is included[b]1) To simplify example I include in our native C++ dll project the small test function "test_func":[/b]test_func.cpp: #include "stdafx.h" double __stdcall test_func() { return 1.0; }in .def file also have added "test_func"After compiling - the CoreLIB.dll [b]is signed[/b] with our company digital key. I have tested accessing to this function from .NET in c# Application - and it worked.[b]2) I create new Visual C# -> Class Libary project and in Class1.cs file and put this code:[/b]using System;using System.Collections.Generic;using System.Linq;using System.Text;//using System.Threading.Tasks;using System.Data;using System.Data.SqlClient;using System.Data.SqlTypes;using Microsoft.SqlServer.Server;using System.Collections;using System.Runtime.InteropServices;public static class CLRTest{#if DEBUG [DllImport("D:\\Project\\Core_LIB\\x64\\Debug\\CoreLIB.dll")]#else [DllImport("C:\\SQLSRV_CLRFUNCS\\Core_LIB\\x64\\CoreLIB.dll")]#endif public static extern double test_func(); [SqlFunction()] public static SqlInt32 TestFnc() { return (SqlInt32)test_func(); }}The project successfully compiled into CLRTest.dll and [b]signed[/b] with company digital key. I copy it into C:\SQLSRV_CLRFUNCS\CLRTest.dll. [b]3) I create the TestDB database[/b][b]4) I enable CLR:[/b] sp_configure 'show advanced options', 1 RECONFIGURE GO sp_configure 'clr enabled', 1 RECONFIGURE GO sp_configure 'show advanced options', 0 RECONFIGURE GO[b]5) I prepare the TestDB database to use UNSAFE Assemblies:[/b] use TestDB go alter database TestDB set trustworthy on; go[b]6) I register assembly [/b] CREATE ASSEMBLY CLRTest AUTHORIZATION dbo FROM 'C:\SQLSRV_CLRFUNCS\CLRTest.dll' WITH PERMISSION_SET = UNSAFE GO[b]7) Register th UDF:[/b] CREATE FUNCTION TestFnc() RETURNS int AS EXTERNAL NAME CLRClaytonBeta.CLRTest.TestFnc GOAll registration scripts finished successfully.[b]8) Test my UDF, I run this query:[/b] select dbo.TestFnc(); this command freeze without any errors!! if i replace the "return (SqlInt32)test_func();" string with "return 1;" - all works. Please, help!
↧
