链接服务器上的身份插入失败 [英] Identity insert on linked server fails

问题描述

我想使用存储过程将表从我的测试数据库复制到具有相同 ID/身份的链接服务器，但我无法让它工作..我已将 IDENTITY_INSERT 设置为 ON 但它仍然抱怨 ID 列.

I want to use a stored procedure to copy a table from my test database to a linked server with the same ID's / Identity but I can't get it to work.. I've set the IDENTITY_INSERT to ON but it still complains about the ID column.

这是我的程序:

CREATE PROCEDURE [dbo].[TEST2PROD_CopyUIDataSServer]
AS Begin
declare @sql nvarchar(max)
-- First truncate target table
set @sql = 'EXEC [LINKEDSERVER].tempdb.sys.sp_sqlexec' + char(39)+ 'TRUNCATE Table [ProductManager].dbo.[UIData]' + char(39)+  ';'
---- SET IDENTITY_INSERT ON
set @sql = @sql + 'EXEC [LINKEDSERVER].tempdb.sys.sp_sqlexec' + char(39)+ 'SET IDENTITY_INSERT [ProductManager].[dbo].[UIData] ON' + char(39)+  ';'
---- INSERT UIDATA records from DB1 into linked server DB2
set @sql = @sql + 'WITH TestData as (SELECT * from ProductManager.dbo.UIData UID)' + NCHAR(13)+  'INSERT INTO   [LINKEDSERVER].[ProductManager].[dbo].[UIData]' + NCHAR(13) + 'select * from TestData;'
print @sql
exec (@sql) 
end

但是当我执行 SP 时，它给了我以下错误:

But when I execute the SP it gives me the following error:

链接服务器的 OLE DB 提供程序SQLNCLI10".... 无法插入表[LINKEDSERVER].[ProductManager].[dbo].[UIData]"，因为列Id".用户无权写入该列.

The OLE DB provider "SQLNCLI10" for linked server .... could not INSERT INTO table "[LINKEDSERVER].[ProductManager].[dbo].[UIData]" because of column "Id". The user did not have permission to write to the column.

链接的服务器属性 RPC 和 RPC out 设置为 true.我希望有人可以帮助我吗?

Linked server properties RPC and RPC out are set to true. I hope someboy can help me out here?

更新:我决定把事情分开，首先我将数据从本地服务器复制到 TEMP_TABLE 中的链接服务器，我不必处理IDENTITY 问题.

UPDATE: I decided to pull things apart, first I copy the data from the local server to the linked server in a TEMP_TABLE where I don't have to deal with IDENTITY issues.

然后我在链接/远程服务器上编写了一个存储过程，因为我没有使用 SELECT * 而是指定列列表.有可能这也可以在 SP 的本地服务器上运行，但我还没有时间或兴趣检查一下..

Then I wrote a stored procedure on the linked / remote server, since I'm not using SELECT * but specify the column list. Chances are this will work from the local server in an SP too but I don't have the time or interest to check it out yet..

USE [ProductManager]
GO
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO
CREATE PROCEDURE [dbo].[TEST2PROD_CopyBaseTables]
AS BEGIN
DECLARE @DestTable VARCHAR(50)
DECLARE @DestPath VARCHAR(50)
DECLARE @SrceTable VARCHAR(255)
declare @sql nvarchar(max)
DECLARE @columnList varchar(max)
DECLARE @err int

Begin TRY

declare @comma_delimited_list varchar(4000) 
--- FIRST TRY WITH ONE TABLE, EXTENDABLE...
set @comma_delimited_list = 'UIData' 

declare @cursor cursor 
set @cursor = cursor static for  
  select * from dbo.Split(@comma_delimited_list,',') a 

declare @naam varchar(50)
open @cursor 
while 1=1 begin 
  fetch next from @cursor into @DestTable
  if @@fetch_status <> 0 break 

    --Create tablenames
    SET @SrceTable = '[ProductManager].[dbo].TEMP_' + @DestTable
    SET @DestPath = '[ProductManager].[dbo].'+ @DestTable 
    print @srceTable;
    print @DestTable;

    --Truncate target table
    set @sql ='TRUNCATE TABLE '+ @DestPath + ';'

    --Insert statement needs column names
    set @columnList =''
    SELECT  @columnList = coalesce(@columnList + '[' + name + '],','') FROM sys.columns Where OBJECT_NAME(OBJECT_ID) = @DestTable
    if RIGHT(RTRIM(@columnList),1) = ',' 
    begin
        SET @columnList = LEFT(@columnList, LEN(@columnList) - 1) 
    end

    --Transfer data from source table 2 destination
     set @sql = @sql + ' SET IDENTITY_INSERT ' + @DestPath + ' ON;' + ' INSERT INTO ' + @DestPath + '(' + @columnList + ') SELECT ' + @columnList + ' FROM ' + @SrceTable

    print @sql;

    exec (@sql)
end 
-- not strictly necessary w/ cursor variables since the will go out of scope like a normal var 
close @cursor 
deallocate @cursor 

End Try
Begin Catch
 declare @ErrorMsg nvarchar(MAX);
 select @ErrorMsg =  ERROR_MESSAGE();

SELECT @err = @@error IF @err <> 0 Return @err
end Catch
END

推荐答案

IDENTITY_INSERT 不适用于链接服务器 AFAIK，除非您执行包含 SET IDENTITY_INSERT 在批处理中或在远程服务器上有一些代码(例如存储过程)为您执行此操作.

IDENTITY_INSERT doesn't work with linked servers AFAIK, unless you execute dynamic SQL that includes the SET IDENTITY_INSERT in the batch or have some code (Stored Proc for instance) on the remote server which does that for you.

IDENTITY_INSERT 是针对每个会话的(请参阅 MSDN) 并且当您使用远程服务器时，这可能与您通过 [LINKEDSERVER].tempdb.sys.sp_sqlexec 执行的语句位于不同的会话中，这会导致它失败，如您所见它正在发生.

The IDENTITY_INSERT is per-session (see MSDN) and when you use the remote server this will probably be in a different session from your statement executed via [LINKEDSERVER].tempdb.sys.sp_sqlexec, which causes it to fail as you see it happening.

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