sql 添加用户

use master
GO
EXEC sp_addlogin 'infos1', '1', 'master'
exec sp_grantdbaccess 'infos311' -- 给访问权限
USE [UniMessage];
grant select,insert,update,delete to [infos311]
GO

-- 创建用户
create login [infos1] with password='1';
go
use [UniMessage];
go
create user [infos1] from login [infos1];
go
grant select,insert,update,delete  to [infos1];
go   -- 测试
execute as user='test1';
select SUSER_NAME() loginame,USER_NAME() username;
--select * from dbo.Region;
revert;
use master
GO
--USE [UniMessage];
exec sp_droplogin 'infos2'
EXEC sp_helpuser 'dbo'