sql - 从 pgAdmin 生成的 CREATE 语句中的 GRANT

Question

如果我在 Postgres 中创建以下序列:

CREATE SEQUENCE test
  INCREMENT 1
  MINVALUE 1
  MAXVALUE 9223372036854775807
  START 1
  CACHE 1;
GRANT ALL ON SEQUENCE test TO testuser;
GRANT SELECT ON SEQUENCE test TO testuser2;

然后在pgAdmin中选择sequence，鼠标右键->CREATE script，我得到:

CREATE SEQUENCE test
  INCREMENT 1
  MINVALUE 1
  MAXVALUE 9223372036854775807
  START 1
  CACHE 1;
ALTER TABLE test
  OWNER TO testuser;
GRANT ALL ON TABLE test TO testuser;
GRANT SELECT ON TABLE test TO testuser2;

所以在 GRANT 语句中我看到关键字“TABLE”而不是“SEQUENCE”

1. 这是为什么？
2. pgAdmin 如何生成 DDL 提取物？

这个问题与我在这里的其他问题之一相关:
Query GRANTS granted to a sequence in postgres

Answer 1

在 PostgreSQL 中，序列有点像表。

The catalog pg_class catalogs tables and most everything else that has columns or is otherwise similar to a table. This includes indexes (but see also pg_index), sequences, views, composite types, and TOAST tables; see relkind.

PostgreSQL docs for pg_class , 系统目录之一(系统表)