MSSQL数据库迁移之用户名问题
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MSSQL数据库迁移之用户名问题，
前端之家小编觉得挺不错的，现在分享给大家，也给大家做个参考。
但是，此时用户A存在于数据库A中，而新的MSsql中虽然能创建用户A，但无法把权限赋于用户A。新创建一个用户B吧，用户A创建的表和其它信息就又无法访问。在这里找到了解决方法：
在源 sql Server 上运行以下脚本。此脚本可在 master 数据库中创建名为 sp_hexadecimal 和 sp_help_revlogin 的两个存储过程。请在完成过程的创建之后继续执行第 2 步。
注意：下面的过程取决于 sql Server 系统表。这些表的结构在 sql Server 的不同版本之间可能会有变化，请不要直接从系统表中选择。
----- Begin Script,Create sp_help_revlogin procedure -----
<div class="codetitle"><a style="CURSOR: pointer" data="66193" class="copybut" id="copybut66193" onclick="doCopy('code66193')"> 代码如下:
<div class="codebody" id="code66193">
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,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,NULL,@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,@binpwd
END
CLOSE login_curs
DEALLOCATE login_curs
RETURN 0
GO
2. 在创建 sp_help_revlogin 存储过程后，请从源服务器上的
