pg 常用命令

列出所有库

\l

postgres@0:users> \l
+-----------+----------+----------+------------+------------+-----------------------+
| Name      | Owner    | Encoding | Collate    | Ctype      | Access privileges     |
|-----------+----------+----------+------------+------------+-----------------------|
| 123456    | postgres | UTF8     | en_US.utf8 | en_US.utf8 | <null>                |
| auths     | postgres | UTF8     | en_US.utf8 | en_US.utf8 | <null>                |
| mydb      | postgres | UTF8     | en_US.utf8 | en_US.utf8 | <null>                |
| postgres  | postgres | UTF8     | en_US.utf8 | en_US.utf8 | <null>                |
| template0 | postgres | UTF8     | en_US.utf8 | en_US.utf8 | =c/postgres           |
|           |          |          |            |            | postgres=CTc/postgres |
| template1 | postgres | UTF8     | en_US.utf8 | en_US.utf8 | =c/postgres           |
|           |          |          |            |            | postgres=CTc/postgres |
| users     | postgres | UTF8     | en_US.utf8 | en_US.utf8 | <null>                |
| zero_0    | postgres | UTF8     | en_US.utf8 | en_US.utf8 | <null>                |
+-----------+----------+----------+------------+------------+-----------------------+
 

列出某个database 的所有 表(tables)

先use 某个库名
然后 \dt

postgres@0:users> \dt
+--------+-------------------------------+-------+----------+
| Schema | Name                          | Type  | Owner    |
|--------+-------------------------------+-------+----------|
| public | sys_authorities               | table | postgres |
| public | sys_authority_sys_base_menus  | table | postgres |
| public | sys_authority_sys_users       | table | postgres |
| public | sys_base_menu_btns            | table | postgres |
| public | sys_base_menu_parameters      | table | postgres |
| public | sys_base_menu_sys_authorities | table | postgres |
| public | sys_base_menus                | table | postgres |
| public | sys_user_sys_authorities      | table | postgres |
| public | sys_users                     | table | postgres |
+--------+-------------------------------+-------+----------+
SELECT 9
Time: 0.012s

列出 某个 表(table) 的 所有属性 (columns)

\d+ 表名

postgres@0:users> \d+ sys_users
+--------------+--------------------------+-----------------------------------------------------------------+----------+--------------+-------------+
| Column       | Type                     | Modifiers                                                       | Storage  | Stats target | Description |
|--------------+--------------------------+-----------------------------------------------------------------+----------+--------------+-------------|
| active_color | text                     |  default '#1890ff'::text                                        | extended | <null>       | <null>      |
| authority_id | text                     |  default '888'::text                                            | extended | <null>       | <null>      |
| base_color   | text                     |  default '#fff'::text                                           | extended | <null>       | <null>      |
| created_at   | timestamp with time zone |                                                                 | plain    | <null>       | <null>      |
| email        | text                     |                                                                 | extended | <null>       | <null>      |
| header_img   | text                     |  default 'https://qmplusimg.henrongyi.top/gva_header.jpg'::text | extended | <null>       | <null>      |
| id           | bigint                   |  not null default nextval('sys_users_id_seq'::regclass)         | plain    | <null>       | <null>      |
| nick_name    | text                     |  default '系统用户'::text                                       | extended | <null>       | <null>      |
| password     | text                     |                                                                 | extended | <null>       | <null>      |
| phone        | text                     |                                                                 | extended | <null>       | <null>      |
| side_mode    | text                     |  default 'dark'::text                                           | extended | <null>       | <null>      |
| uuid         | text                     |                                                                 | extended | <null>       | <null>      |
| updated_at   | timestamp with time zone |                                                                 | plain    | <null>       | <null>      |
| username     | text                     |                                                                 | extended | <null>       | <null>      |
+--------------+--------------------------+-----------------------------------------------------------------+----------+--------------+-------------+
Indexes:
    "sys_users_pkey" PRIMARY KEY, btree (id)
Referenced by:
    TABLE "sys_authorities" CONSTRAINT "fk_sys_users_authority" FOREIGN KEY (sys_user_id) REFERENCES sys_users(id)
    TABLE "sys_authority_sys_users" CONSTRAINT "fk_sys_authority_sys_users_sys_user_orm" FOREIGN KEY (sys_user_orm_id) REFERENCES sys_users(id)
Has OIDs: no

Time: 0.013s

从远程数据库 里面 导出 sql 到本地 存储 为sql 文件

用 pg_dump命令
如 pg_dump -U postgres -h 39.99.242.255 -p 15432 zero_0 > ~/zero0.sql
如图有详细解释

导入sql 文件 到本地 数据库里

使用 psql命令
如psql -d zero_0 -U postgres -h 0.0.0.0 -f ~/.zero0.sql
如图有详细解释

执行命令行命令 创建 数据 库

pg 不像 mysql 可以 create database if not exists users; 一行命令就能创建数据库
他弄起来 比较麻烦
得 echo "SELECT 'CREATE DATABASE mydb' WHERE NOT EXISTS (SELECT FROM pg_database WHERE datname = 'mydb')\gexec" | psql -d zero_0 -U postgres -h 0.0.0.0 才行
这里的 mydb 就是 你要创建的 db名

本质上就是利用 psql 命令 执行 sql 语句 创建 命令 (在命令行里不是在 pgsql 里面)

后面 有空再补充

标签：utf8,en,postgres,text,US,sys,pg,常用命令
来源： https://www.cnblogs.com/ifnk/p/15959143.html