我想知道为什么允许新创建的用户在连接到数据库后创建表。我有一个数据库，project2_core：
postgres=# \l
List of databases
Name | Owner | Encoding | Collate | Ctype | Access privileges
---------------+--------------+-----------+-------------+-------------+-------------------------------
postgres | postgres | SQL_ASCII | C | C |
project2_core | atm_project2 | UTF8 | de_DE.UTF-8 | de_DE.UTF-8 | project2=CTc/project2
template0 | postgres | SQL_ASCII | C | C | =c/postgres +
| | | | | postgres=CTc/postgres
template1 | postgres | SQL_ASCII | C | C | =c/postgres +
| | | | | postgres=CTc/postgres
(5 rows) …