在PostgreSQL中创建表分区的权限继承

我已对分区表设置了特殊权限：

CREATE TABLE public.paritioned_table (
    _time int8 NULL,
    ...
) PARTITION BY RANGE (_time);

-权限

GRANT ALL ON TABLE public.paritioned_table TO someuser;

我有一个创建分区的触发器：

_partition := 'paritioned_table_' || to_char(to_timestamp(_time),'YYYY_MM');

IF NOT EXISTS(SELECT relname FROM pg_class WHERE relname = _partition) THEN
    RAISE NOTICE 'A partition has been created %', _partition;

    select extract(epoch FROM date_trunc('month', to_timestamp(_time))) into _from;
    select extract(epoch FROM date_trunc('month', to_timestamp(_time)) + INTERVAL '1 MONTH') into _to;

    execute 'CREATE TABLE ' || _partition || ' PARTITION OF paritioned_table FOR VALUES FROM (' || _from || ') TO (' || _to || ')';

END IF;

问题是新创建的分区不继承父级故事权限。所以我的问题-创建具有权限继承的分区的最佳实践是什么