Re: Bug of psql meta-command \sf & \sv

On Wed, 27 Sep 2023 at 20:35, 咸🐟 <2437705447(at)qq(dot)com> wrote:
> https://www.postgresql.org/docs/current/sql-syntax-lexical.html#SQL-SYNTAX-IDENTIFIERS
> I don't think this meets the documentation's definition of an identifier.&nbsp; Semicolons should not be used this way here.（Excuse me, I need to test the email function.）
>

In PostgreSQL, quoted identifiers can contain any character, except the
character with code zero. For example:

postgres=# CREATE table "<>!(at)#$%^&*()" ("*&-=+" int, "?>.,\/" text);
CREATE TABLE
postgres=# \d "<>!(at)#$%^&*()"
Table "public.<>!(at)#$%^&*()"
Column | Type | Collation | Nullable | Default
--------+---------+-----------+----------+---------
*&-=+ | integer | | |
?>.,\/ | text | | |

postgres=# INSERT INTO "<>!(at)#$%^&*()" VALUES (1, 'hello world');
INSERT 0 1
postgres=# SELECT * FROM "<>!(at)#$%^&*()";
*&-=+ | ?>.,\/
-------+-------------
1 | hello world
(1 row)

--
Regrads,
Japin Li
ChengDu WenWu Information Technology Co., Ltd.