Cannot INSERT: ERROR: array value must start with "{" or dimension information

Question

INSERT INTO user_data.user_data (username,randomint)
VALUES ('mahman',1);

ERROR:  array value must start with "{" or dimension information
LINE 1: ... user_data.user_data (username,randomint) VALUES ('mahman...

INSERT INTO user_data.user_data (username,randomint)
VALUES {'mahman',1};

ERROR:  syntax error at or near "{"
LINE 1: ...O user_data.user_data (username,randomint) VALUES {'mahman',...

INSERT INTO user_data.user_data (username,randomint)
VALUES (2,{'mahman',1});

ERROR:  syntax error at or near "{"
LINE 1: ...ser_data.user_data (username,randomint) VALUES (2,{'mahman',...

以上不同的 INSERT 语句在 PostgreSQL 中失败。我做错了什么？

我的架构：

journeypost=# \dt user_data.*
           List of relations
  Schema   |   Name    | Type  | Owner 
-----------+-----------+-------+-------
 user_data | user_data | table | user

我的table:

journeypost=# \d user_data.user_data
           Table "user_data.user_data"
  Column   |          Type           | Modifiers 
-----------+-------------------------+-----------
 username  | character varying(50)[] | not null
 randomint | integer                 | 
Indexes:
    "UsernameUnique" PRIMARY KEY, btree (username)

Answer 1

您的列 username 似乎是 array 类型，因此文字 'mahman' 无效输入。

应该是'{mahman}':

INSERT INTO user_data.user_data (username,randomint)
VALUES ('{mahman}',1);

（或者将其改为普通的 varchar 列或 text 列。）

更新确认：character varying(50)[] 是 character varying(50) 的数组。

关于array literal / array constructor：

Pass array from node-postgres to plpgsql function
How to pass custom type array to Postgres function

Cannot INSERT: ERROR: array value must start with "{" or dimension information

Cannot INSERT: ERROR: array value must start with "{" or dimension information

arrays

postgresql

types

sql-insert