-- 修改配置文件：   shared_preload_libraries = 'pg_stat_statements, anon'

-- 1. 创建并激活插件

CREATE   EXTENSION IF NOT EXISTS anon CASCADE;

SELECT   anon.mask_init();

-- 2.声明屏蔽的用户

CREATE ROLE   skynet;

COMMENT ON   ROLE skynet IS 'MASKED';

-- 3.声明屏蔽规则

COMMENT ON   COLUMN people.name IS 'MASKED WITH FUNCTION anon.random_last_name()';

COMMENT ON   COLUMN people.phone IS 'MASKED WITH FUNCTION   anon.partial(phone,2,$$******$$,2)';

-- 4. 查询屏蔽敏感信息的用户

\! psql test   -U skynet -c 'SELECT * FROM people;'

 id    |   name   |     phone

-----+----------+------------

T800 |   n3xtchen | 13******11

-- 1. 创建测试用户

create user   root;

create user   normal_user;

-- 2. 切换到root建表 & 视图

set role root;

create table   user_phone_number(id int, user_name name, phone_number name);

insert into   user_phone_number values(1, '张三', '12345678');

insert into   user_phone_number values(1, '李四', '56781234');

create or   replace view member_phone_number as

    SELECT

            S.id,

            S.user_name,

            substring(S.phone_number, 1,1) ||   '******' ||substring(S.phone_number, 8,8) as phone_number

    FROM user_phone_number AS S;

-- 3. 回收表的权限，授予普通用户view权限

revoke all on   user_phone_number from public;

grant all on   member_phone_number to normal_user;

-- 4. 使用普通用户测试

reset role;

set role   normal_user;

select * from   user_phone_number;

select * from   member_phone_number;