组的行级安全性或使行适合组

Question

我希望表中的行仅可由组成员访问。我创建用户并通过以下方法将其添加到组中，

CREATE USER abc LOGIN PASSWORD 'securedpassword1';
CREATE USER xyz LOGIN PASSWORD 'securedpassword2';

ALTER GROUP permanent ADD USER abc;

然后，我编写的策略使其仅对当前用户可用。但是我需要整个小组来访问它。

CREATE TABLE table_Workers
(
    worID INT
    ,worName CHARACTER VARYING
    ,pgUser CHARACTER VARYING
);
INSERT INTO table_Workers VALUES 
(1,'Jason','abc'),(2,'Roy','abc'),(3,'Johny','abc')
,(4,'Jane','xyz'),(5,'Kane','xyz'),(6,'Stuart','xyz');


CREATE POLICY policy_employee_user ON table_Workers FOR ALL
TO PUBLIC USING (pgUser = current_user);

ALTER TABLE table_Workers ENABLE ROW LEVEL SECURITY;

pgUser命名可以访问该行的用户。我希望将pgUser列替换为pgRole，其中提到了组的名称，该组的成员可以访问该特定行。任何使行可被整个组访问的提示或方法都是值得赞赏的。

Answer 1

这似乎可行：

CREATE TABLE workers
(
    worid   int,
    worname text,
    pgrole text[]
);

INSERT INTO workers 
VALUES 
  (1,'Jason','{group1}'),
  (2,'Roy','{group1,group2}'),
  (3,'Johny','{group1}');

CREATE POLICY policy_employee_user ON workers FOR ALL
TO PUBLIC 
   USING ( (select count(*) 
            from unnest(pgrole) r 
            where pg_has_role(current_user, r, 'MEMBER')) > 0 );

ALTER TABLE workers ENABLE ROW LEVEL SECURITY;