但是，此時用戶A存在于數據庫A中，而新的MSSQL中雖然能創建用戶A，但無法把權限賦于用戶A。新創建一個用戶B吧，用戶A創建的表和其它信息就又無法訪問。在這里找到了解決方法：
在源 SQL Server 上運行以下腳本。此腳本可在 master 數據庫中創建名為 sp_hexadecimal 和 sp_help_revlogin 的兩個存儲過程。請在完成過程的創建之后繼續執行第 2 步。
注意：下面的過程取決于 SQL Server 系統表。這些表的結構在 SQL Server 的不同版本之間可能會有變化，請不要直接從系統表中選擇。
----- Begin Script, Create sp_help_revlogin procedure -----
復制代碼 代碼如下:
USE master
GO
IF OBJECT_ID ('sp_hexadecimal') IS NOT NULL
DROP PROCEDURE sp_hexadecimal
GO
CREATE PROCEDURE sp_hexadecimal
@binvalue varbinary(256),
@hexvalue varchar(256) OUTPUT
AS
DECLARE @charvalue varchar(256)
DECLARE @i int
DECLARE @length int
DECLARE @hexstring char(16)
SELECT @charvalue = '0x'
SELECT @i = 1
SELECT @length = DATALENGTH (@binvalue)
SELECT @hexstring = '0123456789ABCDEF'
WHILE (@i = @length)
BEGIN
DECLARE @tempint int
DECLARE @firstint int
DECLARE @secondint int
SELECT @tempint = CONVERT(int, SUBSTRING(@binvalue,@i,1))
SELECT @firstint = FLOOR(@tempint/16)
SELECT @secondint = @tempint - (@firstint*16)
SELECT @charvalue = @charvalue +
SUBSTRING(@hexstring, @firstint+1, 1) +
SUBSTRING(@hexstring, @secondint+1, 1)
SELECT @i = @i + 1
END
SELECT @hexvalue = @charvalue
GO
IF OBJECT_ID ('sp_help_revlogin') IS NOT NULL
DROP PROCEDURE sp_help_revlogin
GO
CREATE PROCEDURE sp_help_revlogin @login_name sysname = NULL AS
DECLARE @name sysname
DECLARE @xstatus int
DECLARE @binpwd varbinary (256)
DECLARE @txtpwd sysname
DECLARE @tmpstr varchar (256)
DECLARE @SID_varbinary varbinary(85)
DECLARE @SID_string varchar(256)
IF (@login_name IS NULL)
DECLARE login_curs CURSOR FOR
SELECT sid, name, xstatus, password FROM master..sysxlogins
WHERE srvid IS NULL AND name > 'sa'
ELSE
DECLARE login_curs CURSOR FOR
SELECT sid, name, xstatus, password FROM master..sysxlogins
WHERE srvid IS NULL AND name = @login_name
OPEN login_curs
FETCH NEXT FROM login_curs INTO @SID_varbinary, @name, @xstatus, @binpwd
IF (@@fetch_status = -1)
BEGIN
PRINT 'No login(s) found.'
CLOSE login_curs
DEALLOCATE login_curs
RETURN -1
END
SET @tmpstr = '/* sp_help_revlogin script '
PRINT @tmpstr
SET @tmpstr = '** Generated '
+ CONVERT (varchar, GETDATE()) + ' on ' + @@SERVERNAME + ' */'
PRINT @tmpstr
PRINT ''
PRINT 'DECLARE @pwd sysname'
WHILE (@@fetch_status > -1)
BEGIN
IF (@@fetch_status > -2)
BEGIN
PRINT ''
SET @tmpstr = '-- Login: ' + @name
PRINT @tmpstr
IF (@xstatus 4) = 4
BEGIN -- NT authenticated account/group
IF (@xstatus 1) = 1
BEGIN -- NT login is denied access
SET @tmpstr = 'EXEC master..sp_denylogin ''' + @name + ''''
PRINT @tmpstr
END
ELSE BEGIN -- NT login has access
SET @tmpstr = 'EXEC master..sp_grantlogin ''' + @name + ''''
PRINT @tmpstr
END
END
ELSE BEGIN -- SQL Server authentication
IF (@binpwd IS NOT NULL)
BEGIN -- Non-null password
EXEC sp_hexadecimal @binpwd, @txtpwd OUT
IF (@xstatus 2048) = 2048
SET @tmpstr = 'SET @pwd = CONVERT (varchar(256), ' + @txtpwd + ')'
ELSE
SET @tmpstr = 'SET @pwd = CONVERT (varbinary(256), ' + @txtpwd + ')'
PRINT @tmpstr
EXEC sp_hexadecimal @SID_varbinary,@SID_string OUT
SET @tmpstr = 'EXEC master..sp_addlogin ''' + @name
+ ''', @pwd, @sid = ' + @SID_string + ', @encryptopt = '
END
ELSE BEGIN
-- Null password
EXEC sp_hexadecimal @SID_varbinary,@SID_string OUT
SET @tmpstr = 'EXEC master..sp_addlogin ''' + @name
+ ''', NULL, @sid = ' + @SID_string + ', @encryptopt = '
END
IF (@xstatus 2048) = 2048
-- login upgraded from 6.5
SET @tmpstr = @tmpstr + '''skip_encryption_old'''
ELSE
SET @tmpstr = @tmpstr + '''skip_encryption'''
PRINT @tmpstr
END
END
FETCH NEXT FROM login_curs INTO @SID_varbinary, @name, @xstatus, @binpwd
END
CLOSE login_curs
DEALLOCATE login_curs
RETURN 0
GO
----- End Script -----
2. 在創建 sp_help_revlogin 存儲過程后，請從源服務器上的查詢分析器中運行 sp_help_revlogin 過程。sp_help_revlogin 存儲過程可同時用于 SQL Server 7.0 和 SQL Server 2000。sp_help_revlogin 存儲過程的輸出是登錄腳本，該腳本可創建帶有原始 SID 和密碼的登錄。保存輸出，然后將其粘貼到目標 SQL Server 上的查詢分析器中，并運行它。例如：EXEC master..sp_help_revlogin
復制代碼 代碼如下:
SP_DEFAULTDB 'cyiyun','DB_WAYUP'
第1步后，在源服務器上運行sp_help_revlogin后，會產生創建用戶數據的SQL，例如：
復制代碼 代碼如下:
/* sp_help_revlogin script
** Generated 06 24 2009 1:40PM on WORKGROU-B1XTVC */
DECLARE @pwd sysname
-- Login: hxtest
SET @pwd = CONVERT (varbinary(256), 0x0100CF4E7D342B359438E4BCCA72E6C83F44FCCF30C8016286DE2B359438E4BCCA72E6C83F44FCCF30C8016286DE)
EXEC master..sp_addlogin '520web', @pwd, @sid = 0x1738BB6AD0CD24498F67FB5589E8EDCB, @encryptopt = 'skip_encryption'
......
把這段直接在新服務器上運行，或者找到相應的用戶名創建，就可以解決這個問題了!
