sql - 错误 : permission denied for sequence cities_id_seq using Postgres

Question

我在我的数据库上运行了以下 sql 脚本:

create table cities (
id serial primary key,
name text not null
);

create table reports (
id serial primary key,
cityid integer not null references cities(id),
reportdate date not null,
reporttext text not null
);

create user www with password 'www';

grant select on cities to www;
grant insert on cities to www;
grant delete on cities to www;

grant select on reports to www;
grant insert on reports to www;
grant delete on reports to www;

grant select on cities_id_seq to www;
grant insert on cities_id_seq to www;
grant delete on cities_id_seq to www;

grant select on reports_id_seq to www;
grant insert on reports_id_seq to www;
grant delete on reports_id_seq to www;

当，作为用户 www，试图:

insert into cities (name) values ('London');

我收到以下错误:

ERROR: permission denied for sequence cities_id_seq

我知道问题出在串行类型上。这就是为什么我将 *_id_seq 的选择、插入和删除权限授予 www。但这并不能解决我的问题。我错过了什么？

Answer 1

从 PostgreSQL 8.2 开始你必须使用:

GRANT USAGE, SELECT ON SEQUENCE cities_id_seq TO www;

GRANT USAGE - 对于序列，此权限允许使用 currval 和 nextval 函数。

另外正如@epic_fil 在评论中指出的那样，您可以使用以下方式授予对架构中所有序列的权限:

GRANT USAGE, SELECT ON ALL SEQUENCES IN SCHEMA public TO www;

注意:在执行权限授予命令之前不要忘记选择数据库(\c <database_name>)