Question

我在本地SQL Server 14.0.1000.169数据库上以sa身份登录，并尝试运行以下脚本：

 CREATE USER [myuser] FOR LOGIN [myuser] WITH DEFAULT_SCHEMA=[dbo]
 GO

我得到以下结果：

Msg 15007, Level 16, State 1, Line 1
myuser is not a valid login or you do not have permission

我仔细检查了一下，发现myuser不存在，而dbo确实存在，知道有什么问题吗？

Answer 1

Before Creating a User you must first create a global Login.

under Security -> Logins -> NewLogin

Or

First connect to the server and switch to the master database. In master create a login and then add a user for that login to the master database.

CREATE LOGIN [MyLogin] WITH password='xxxxxxxxx'
GO

CREATE USER [MyUser] FOR LOGIN [MyLogin] WITH DEFAULT_SCHEMA=[dbo] 
GO

Once the login exists you can add them as a User under a particular database.