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HomeDatabaseMysql TutorialHow to delete user-defined database users in SQL Server (detailed graphic explanation)

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删除用户自定义数据库用户注意事项

不能从数据库中删除拥有安全对象的用户。 必须先删除或转移安全对象的所有权,才能删除拥有这些安全对象的数据库用户。

不能删除 guest 用户,但可在除 master 或 tempdb 之外的任何数据库中执行 REVOKE CONNECT FROM GUEST 来撤消它的 CONNECT 权限,从而禁用 guest 用户。(相关推荐:MySQL教程

需要对数据库具有 ALTER ANY USER 权限。

使用SSMS数据库管理工具删除用户自定义数据库用户

1、连接服务器-》展开数据库-》选择要删除用户的数据库-》展开数据库-》展开安全性-》展开用户-》选择要删除的用户右键点击-》选择删除。

2、在删除对象弹出框-》点击确定。

3、不需要刷新即可查看删除结果。

使用T-SQL脚本删除用户自定义用户

语法


--声明数据库引用
use database_name;
go

--判断是否存在用户自定义用户,如果存在则删除。
if exists(select * from sys.database_principals where name=user_name)
--把架构所有者修改回来架构自身
alter authorization on schema::[Architecture_name] to Architecture_name;
--删除角色拥有的成员
alter role [[Architecture_name] drop member user_name;
--删除扩展属性
exec sys.sp_dropextendedproperty @name=N'tests_description', @level0type=N'user',@level0name=N'user_name'
--删除用户架构
drop user user_name;
go


语法注释

--database_name
--数据库名称
--user_name
--用户名称
--Architecture_name
--架构名称
--tests_description
--扩展属性名称

示例


--声明数据库引用
use [testss];
go

--判断是否存在用户自定义用户,如果存在则删除。
if exists(select * from sys.database_principals where name='test1')
--把架构所有者修改回来架构自身
alter authorization on schema::[db_accessadmin] to db_accessadmin;
--删除角色拥有的成员
alter role [db_accessadmin] drop member test1;
--删除扩展属性
--exec sys.sp_dropextendedproperty @name=N'tests_description', @level0type=N'user',@level0name=N'test1'
--删除用户架构
drop user test1;
go


示例结果:使用T-SQL脚本删除用户需要刷新用户文件夹才能查看删除结果。

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