


How 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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