多数据库多模式似乎不适用于较新版本的 postgresql

Question

我想创建两个数据库时遇到问题 和两个模式。每个数据库都有一个单独的模式。 公共架构已被删除。我试过这个没有放弃 具有相同结果的公共模式。使用数据库和架构所有者连接到数据库时，无法看到或使用架构。

我已经使用架构设置了单个数据库，但从未尝试设置多个。问题似乎来自多个数据库和架构。

create user tom;
create database fishes owner tom encoding = 'UTF8';
create schema fish authorization tom;
alter database fishes set schema 'fish';
create user harry;
create database lizards owner harry encoding = 'UTF8';
create schema lizard authorization harry;
alter database lizards set schema 'lizard';

psql (10.8)
postgres=# create user tom;
CREATE ROLE
postgres=# create database fishes owner tom encoding = 'UTF8';
CREATE DATABASE
postgres=# create schema fish authorization tom;
CREATE SCHEMA
postgres=# alter database fishes set schema 'fish';
ALTER DATABASE
postgres=# \du
                                   List of roles
 Role name |                         Attributes                         | Member of
-----------+------------------------------------------------------------+-----------
 postgres  | Superuser, Create role, Create DB, Replication, Bypass RLS | {}
 tom       |                                                            | {}


postgres=# \l
                                                 List of databases
   Name    |  Owner   | Encoding |          Collate           |           Ctype            |   Access privileges
-----------+----------+----------+----------------------------+----------------------------+-----------------------
 fishes    | tom      | UTF8     | English_United States.1252 | English_United States.1252 |
 postgres  | postgres | UTF8     | English_United States.1252 | English_United States.1252 |
 template0 | postgres | UTF8     | English_United States.1252 | English_United States.1252 | =c/postgres          +
           |          |          |                            |                            | postgres=CTc/postgres
 template1 | postgres | UTF8     | English_United States.1252 | English_United States.1252 | =c/postgres          +
           |          |          |                            |                            | postgres=CTc/postgres
(4 rows)


postgres=# \dn
List of schemas
 Name | Owner
------+-------
 fish | tom
(1 row)
postgres=# create user harry;
CREATE ROLE
postgres=# create database lizards owner harry encoding = 'UTF8';
CREATE DATABASE
postgres=# create schema lizard authorization harry;
CREATE SCHEMA
postgres=# alter database lizards set schema 'lizard';
ALTER DATABASE
postgres=# \du
                                   List of roles
 Role name |                         Attributes                         | Member of
-----------+------------------------------------------------------------+-----------
 harry     |                                                            | {}
 postgres  | Superuser, Create role, Create DB, Replication, Bypass RLS | {}
 tom       |                                                            | {}


postgres=# \l
                                                 List of databases
   Name    |  Owner   | Encoding |          Collate           |           Ctype            |   Access privileges
-----------+----------+----------+----------------------------+----------------------------+-----------------------
 fishes    | tom      | UTF8     | English_United States.1252 | English_United States.1252 |
 lizards   | harry    | UTF8     | English_United States.1252 | English_United States.1252 |
 postgres  | postgres | UTF8     | English_United States.1252 | English_United States.1252 |
 template0 | postgres | UTF8     | English_United States.1252 | English_United States.1252 | =c/postgres          +
           |          |          |                            |                            | postgres=CTc/postgres
 template1 | postgres | UTF8     | English_United States.1252 | English_United States.1252 | =c/postgres          +
           |          |          |                            |                            | postgres=CTc/postgres
(5 rows)


postgres=# \dn
List of schemas
  Name  | Owner
--------+-------
 fish   | tom
 lizard | harry
(2 rows)

postgres=# alter user tom password  'xxx';
ALTER ROLE
postgres=# alter user harry password  'xxx';
ALTER ROLE

when I did a \dnpsql -U tom fishes
Password for user tom:
psql (10.8)
WARNING: Console code page (437) differs from Windows code page (1252)
         8-bit characters might not work correctly. See psql reference
         page "Notes for Windows users" for details.
Type "help" for help.

fishes=> \l
                                                 List of databases
   Name    |  Owner   | Encoding |          Collate           |           Ctype            |   Access privileges
-----------+----------+----------+----------------------------+----------------------------+-----------------------
 fishes    | tom      | UTF8     | English_United States.1252 | English_United States.1252 |
 lizards   | harry    | UTF8     | English_United States.1252 | English_United States.1252 |
 postgres  | postgres | UTF8     | English_United States.1252 | English_United States.1252 |
 template0 | postgres | UTF8     | English_United States.1252 | English_United States.1252 | =c/postgres          +
           |          |          |                            |                            | postgres=CTc/postgres
 template1 | postgres | UTF8     | English_United States.1252 | English_United States.1252 | =c/postgres          +
           |          |          |                            |                            | postgres=CTc/postgres
(5 rows)


fishes=> \du
                                   List of roles
 Role name |                         Attributes                         | Member of
-----------+------------------------------------------------------------+-----------
 harry     |                                                            | {}
 postgres  | Superuser, Create role, Create DB, Replication, Bypass RLS | {}
 tom       |                                                            | {}


fishes=> \dn
  List of schemas
  Name  |  Owner
--------+----------
 public | postgres
(1 row)


fishes=> show search_path;
 search_path
-------------
 fish
(1 row)

fishes=> create table eels( type varchar(30) primary key );
ERROR:  no schema has been selected to create in
LINE 1: create table eels( type varchar(30) primary key );
                     ^
fishes=> create table fish.eels( type varchar(30) primary key );
ERROR:  schema "fish" does not exist
LINE 1: create table fish.eels( type varchar(30) primary key );
                     ^

我希望当我使用任一用户登录时，当我使用我的一个非 postgres 用户登录时，\dn 将显示使用 show search_path 显示的数据库架构。 Search_path 是正确的。此外，似乎没有授予架构所有者访问权限。

Answer 1

答案正如 Jeremy 在他的评论中所建议的那样。

在创建架构之前，请连接到要在其中创建架构的数据库。 没有包含应在其中创建它的数据库名称的创建模式语法，因此需要以这种方式完成。