如何将现有 SQL Server 登录名连接到同名的现有 SQL Server 数据库用户

Question

Is there a SQL Server command to connect a user of a single database to a login for the database server of the same name?

For example:

Database Server - Default Instance
Database: TestDB

Server Login - TestUser
Existing user on TestDB - TestUser

If I try to make the TestUser login a user of the TestDB database, the "User, group, or role" already exists.

Does anybody know of an easy way to assign the DB user to the server login ?

Answer 1

新方法（SQL 2008以后）是使用ALTER USER

ALTER USER OrphanUser WITH LOGIN = correctedLoginName;

Answer 2

I think it's sp_change_users_login . It's been a little while, but I used to do that when detaching and reattaching databases.

Answer 3

我已经使用了sp_change_users_login过程来完成那个场景。

Answer 4

if database is readonly: use the SID of the database user to create the login see: https://blog.sqlauthority.com/2015/04/18/sql-server-create-login-with-sid-way-to-synchronize-logins-on-secondary-server/