在使用 psql 运行 CREATE TABLE 之后，找不到 table

Question

我一直在尝试在 PostgreSQL 中创建 table，但是当我尝试使用 \dt - Did not find any relations.[ 列出 table 时出现以下错误=23=]

我在名为 scrape

的数据库中使用了以下 create 语句 - create table jobs( id serial primary key, title text, link text, company text)

如果我使用 \dt *.*，则会出现 table 列表，这似乎是内置的 -

List of relations
       Schema       |          Name           | Type  |  Owner   
--------------------+-------------------------+-------+----------
 information_schema | sql_features            | table | postgres
 information_schema | sql_implementation_info | table | postgres
 information_schema | sql_languages           | table | postgres
 information_schema | sql_packages            | table | postgres
 information_schema | sql_parts               | table | postgres
 information_schema | sql_sizing              | table | postgres
 information_schema | sql_sizing_profiles     | table | postgres
 pg_catalog         | pg_aggregate            | table | postgres
 pg_catalog         | pg_am                   | table | postgres
 pg_catalog         | pg_amop                 | table | postgres
 pg_catalog         | pg_amproc               | table | postgres
 pg_catalog         | pg_attrdef              | table | postgres
 pg_catalog         | pg_attribute            | table | postgres
 pg_catalog         | pg_auth_members         | table | postgres
 pg_catalog         | pg_authid               | table | postgres
 pg_catalog         | pg_cast                 | table | postgres
 pg_catalog         | pg_class                | table | postgres
 pg_catalog         | pg_collation            | table | postgres
 pg_catalog         | pg_constraint           | table | postgres
 pg_catalog         | pg_conversion           | table | postgres
 pg_catalog         | pg_database             | table | postgres
 pg_catalog         | pg_db_role_setting      | table | postgres
 pg_catalog         | pg_default_acl          | table | postgres
 pg_catalog         | pg_depend               | table | postgres
 pg_catalog         | pg_description          | table | postgres
 pg_catalog         | pg_enum                 | table | postgres
 pg_catalog         | pg_event_trigger        | table | postgres
 pg_catalog         | pg_extension            | table | postgres
 pg_catalog         | pg_foreign_data_wrapper | table | postgres
 pg_catalog         | pg_foreign_server       | table | postgres
 pg_catalog         | pg_foreign_table        | table | postgres
 pg_catalog         | pg_index                | table | postgres
 pg_catalog         | pg_inherits             | table | postgres
 pg_catalog         | pg_init_privs           | table | postgres
 pg_catalog         | pg_language             | table | postgres
 pg_catalog         | pg_largeobject          | table | postgres
 pg_catalog         | pg_largeobject_metadata | table | postgres
 pg_catalog         | pg_namespace            | table | postgres
 pg_catalog         | pg_opclass              | table | postgres
 pg_catalog         | pg_operator             | table | postgres
 pg_catalog         | pg_opfamily             | table | postgres
 pg_catalog         | pg_partitioned_table    | table | postgres
 pg_catalog         | pg_pltemplate           | table | postgres
 pg_catalog         | pg_policy               | table | postgres
 pg_catalog         | pg_proc                 | table | postgres
 pg_catalog         | pg_publication          | table | postgres
 pg_catalog         | pg_publication_rel      | table | postgres
 pg_catalog         | pg_range                | table | postgres
 pg_catalog         | pg_replication_origin   | table | postgres
 pg_catalog         | pg_rewrite              | table | postgres
 pg_catalog         | pg_seclabel             | table | postgres
 pg_catalog         | pg_sequence             | table | postgres
 pg_catalog         | pg_shdepend             | table | postgres
 pg_catalog         | pg_shdescription        | table | postgres
 pg_catalog         | pg_shseclabel           | table | postgres
 pg_catalog         | pg_statistic            | table | postgres
 pg_catalog         | pg_statistic_ext        | table | postgres
 pg_catalog         | pg_statistic_ext_data   | table | postgres
 pg_catalog         | pg_subscription         | table | postgres
 pg_catalog         | pg_subscription_rel     | table | postgres
 pg_catalog         | pg_tablespace           | table | postgres
 pg_catalog         | pg_transform            | table | postgres
 pg_catalog         | pg_trigger              | table | postgres
 pg_catalog         | pg_ts_config            | table | postgres
 pg_catalog         | pg_ts_config_map        | table | postgres
 pg_catalog         | pg_ts_dict              | table | postgres
 pg_catalog         | pg_ts_parser            | table | postgres
 pg_catalog         | pg_ts_template          | table | postgres
 pg_catalog         | pg_type                 | table | postgres
 pg_catalog         | pg_user_mapping         | table | postgres

我还检查了模式是否 public -

                          List of schemas
  Name  |  Owner   |  Access privileges   |      Description       
--------+----------+----------------------+------------------------
 public | postgres | postgres=UC/postgres+| standard public schema
        |          | =UC/postgres         | 
(1 row)

如果有帮助，我也包括这里的用户 -

 Role name |                         Attributes                         | Member of 
-----------+------------------------------------------------------------+-----------
 arif      | Superuser, Create role, Create DB                          | {}
 postgres  | Superuser, Create role, Create DB, Replication, Bypass RLS | {}

我也检查了数据库-

scrape-# \l
                                  List of databases
   Name    |  Owner   | Encoding |   Collate   |    Ctype    |   Access privileges   
-----------+----------+----------+-------------+-------------+-----------------------
 arif      | arif     | UTF8     | en_US.UTF-8 | en_US.UTF-8 | 
 postgres  | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | 
 scrape    | arif     | UTF8     | en_US.UTF-8 | en_US.UTF-8 | 
 template0 | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | =c/postgres          +
           |          |          |             |             | postgres=CTc/postgres
 template1 | postgres | UTF8     | en_US.UTF-8 | en_US.UTF-8 | =c/postgres          +
           |          |          |             |             | postgres=CTc/postgres
(5 rows)

Answer 1

您对 psql 中的分号感到困惑。一开始每个人都会遇到这种情况。

仅当 psql 收到终止语句的分号时，才会将语句发送到服务器。否则，您得到的只是一个略有变化的提示，表明 psql 正在等待续行。

所以如果你输入

CREATE TABLE mytab (x integer)

没有分号，还没有发生什么。

然后你意识到你忘记了结束分号，于是你输入

CREATE TABLE mytab (x integer);

现在 psql 会将这两行视为一个语句并将其发送到服务器，这会导致您看到错误消息。

如有疑问，您可以随时按Ctrl+C清除状态并丢弃语句缓冲区。

在使用 psql 运行 CREATE TABLE 之后，找不到 table

After running CREATE TABLE with psql, the table cannot be found

postgresql

psql