不清楚各位大大是怎么做数据迁移的，反正俺大老粗的做法是，先把SQL Server的数据从企业管理中备份出来然后再恢复。

在恢复的过程中经常出现的一个问题就是，数据库的原来的用户跟新的数据库系统上的登录对不上号了，以前我曾经试过多次，但是经常都忘记，总是找一个*快速的方法来恢复数据库的用户，作此记录以慰昨日之辛苦：

SQL Server 数据库恢复用户之葵花点穴手, 以下部分copy from SQL Server Books Online.

sp_change_users_login
Changes the relationship between a Microsoft® SQL Server™ login and a SQL Server user in the current database.

Syntax
sp_change_users_login [ @Action = ] ‘action’
[ , [ @UserNamePattern = ] ‘user’ ]
[ , [ @LoginName = ] ‘login’ ]

Arguments
[@Action =] ‘action’

Describes the action to be performed by the procedure. action is varchar(10), and can be one of these values.

Value Description
Auto_Fix Links user entries in the sysusers table in the current database to logins of the same name in syslogins. It is recommended that the result from the Auto_Fix statement be checked to confirm that the links made are the intended outcome. Avoid using Auto_Fix in security-sensitive situations. Auto_Fix makes best estimates on links, possibly allowing a user more access permissions than intended.
user must be a valid user in the current database, and login must be NULL, a zero-length string (”), or not specified.

Report Lists the users, and their corresponding security identifiers (SID), that are in the current database, not linked to any login.
user and login must be NULL, a zero-length string (”), or not specified.

Update_One Links the specified user in the current database to login. login must already exist. user and login must be specified.

[@UserNamePattern =] ‘user’

Is the name of a SQL Server user in the current database. user is sysname, with a default of NULL. sp_change_users_login can be used only with the security accounts of SQL Server logins and users; it cannot be used with Microsoft Windows NT® users.

[@LoginName =] ‘login’

Is the name of a SQL Server login. login is sysname, with a default of NULL.

Return Code Values
0 (success) or 1 (failure)

Result Sets
Column name Data type Description
UserName sysname Login name.
UserSID varbinary(85) Login security identifier.

Remarks
Use this procedure to link the security account for a user in the current database with a different login. If the login for a user has changed, use sp_change_users_login to link the user to the new login without losing the user’s permissions.

login cannot be sa, and user cannot be the dbo, guest, or INFORMATION_SCHEMA users.

sp_change_users_login cannot be executed within a user-defined transaction.

Permissions
Any member of the public role can execute sp_change_users_login with the Report option. Only members of the sysadmin fixed server role can specify the Auto_Fix option. Only members of the sysadmin or db_owner roles can specify the Update_One option.

Examples
A. Show a report of the current user to login mappings
This example produces a report of the users in the current database and their security identifiers.

EXEC sp_change_users_login ‘Report’
B. Change the login for a user
This example changes the link between user Mary in the pubs database and the existing login, to the new login NewMary (added with sp_addlogin).

–Add the new login.
USE master
go
EXEC sp_addlogin ‘NewMary’
go

–Change the user account to link with the ‘NewMary’ login.
USE pubs
go
EXEC sp_change_users_login ‘Update_One’, ‘Mary’, ‘NewMary’
See Also
sp_addlogin

sp_adduser

sp_helplogins