有createuser
&dropuser
命令:
createuser - define a new PostgreSQL user account
dropuser - remove a PostgreSQL user account
有没有相应的方法来列出用户帐户?
这两个命令不需要用户调用psql
或了解使用它的细节。
答案1
使用psql
shell 并:
\deu[+] [PATTERN]
例如:
postgres=# \deu+
List of user mappings
Server | User name | FDW Options
--------+-----------+-------------
(0 rows)
对于所有用户:
postgres=# \du
List of roles
Role name | Attributes | Member of
------------+------------------------------------------------+-----------
chpert.net | | {}
postgres | Superuser, Create role, Create DB, Replication | {}
另外比如MySQL,你可以这样做:
$ psql -c "\du"
List of roles
Role name | Attributes | Member of
-----------+------------------------------------------------+-----------
chpert | | {}
postgres | Superuser, Create role, Create DB, Replication | {}
test | | {}
答案2
要将输出限制为仅用户名,只需从 shellpsql
或本地 shell/终端执行以下操作:
psql -c "SELECT u.usename AS "User Name" FROM pg_catalog.pg_user u;"
而快速方法,如前面的答案中指出的,显示 3 列;包括用户名,角色属性列表, 和成员角色组。
psql -c "\du"
最后,正如后续答案中所指出的,PostgreSQL 命令在后台运行,以便\du
通过调用以下命令显示这些“默认”列:
SELECT u.usename AS "User name",
u.usesysid AS "User ID",
CASE WHEN u.usesuper AND u.usecreatedb THEN CAST('superuser, create
database' AS pg_catalog.text)
WHEN u.usesuper THEN CAST('superuser' AS pg_catalog.text)
WHEN u.usecreatedb THEN CAST('create database' AS
pg_catalog.text)
ELSE CAST('' AS pg_catalog.text)
END AS "Attributes"
FROM pg_catalog.pg_user u
ORDER BY 1;
(当你输入 \du 时 psql 在幕后做了什么)
最后一部分是从PostgreSQL 邮件列表。
答案3
为了更简单的答案...
从 psql 内部:
\du
从航站楼:
psql -c '\du'
它帮助我记住这一点d经常被用来d描述一些东西并且你是为了你爵士。
答案4
SQL 解决方案通常由 psql \du 完成:
SELECT u.usename AS "User name",
u.usesysid AS "User ID",
CASE WHEN u.usesuper AND u.usecreatedb THEN CAST('superuser, create
database' AS pg_catalog.text)
WHEN u.usesuper THEN CAST('superuser' AS pg_catalog.text)
WHEN u.usecreatedb THEN CAST('create database' AS
pg_catalog.text)
ELSE CAST('' AS pg_catalog.text)
END AS "Attributes"
FROM pg_catalog.pg_user u
ORDER BY 1;