如何在postgres中添加自定义角色创建索引的权限

Question

我目前正在使用以下以主用户 (postgres) 身份执行的 SQL 脚本为特定数据库创建角色。

CREATE USER customrole WITH PASSWORD 'mypassword';

-- removed CREATE permissions from the public schema from all roles
REVOKE CREATE ON SCHEMA public FROM PUBLIC;

-- removed all permissions from the database from all users
REVOKE ALL ON DATABASE mydb FROM PUBLIC;

-- added connect permission on the database to role
GRANT CONNECT ON DATABASE mydb TO customrole;

-- added usage permission on public schema to the customrole
GRANT USAGE ON SCHEMA public TO customrole;

-- added create permission on the public schema to the custom role
GRANT CREATE ON SCHEMA public to customrole;
-- added create permission on the database to custom role
GRANT CREATE ON DATABASE mydb to customrole;

-- added 'all permissions' to all existing tables in the public schema to new role
GRANT ALL PRIVILEGES ON ALL TABLES IN SCHEMA public TO customrole;

-- Set default privileges for the postgres user in the public schema
ALTER DEFAULT PRIVILEGES FOR USER masteruser IN SCHEMA public
GRANT ALL PRIVILEGES ON TABLES TO customrole;

现在我想使用角色在现有表上创建索引。例如：

create index my_idx on mytable (mycolumn);

我的发现如下： 以主用户身份执行：

ALTER TABLE "mydb".public.mytable  OWNER TO "customrole";

作为自定义角色执行：

create index my_idx on mytable (mycolumn);

如果我不执行如上所示的 alter table 命令，我会收到此错误。

错误：SQL 错误 [42501]：错误：必须是表 mytable 的所有者

问题：是否有任何sql命令允许角色（不是主角色）在现有和未来的表中创建索引？

Answer 1

只有表所有者、表所有者的成员（即表所有者允许

SET ROLE

）或超级用户可以在表上创建索引。