无法在 PostgreSQL 中创建名为“user"的数据库表 [英] Cannot create a database table named 'user' in PostgreSQL

问题描述

似乎 PostgreSQL 不允许创建名为 'user' 的数据库表.但是 MySQL 允许创建这样的表.

It seems PostgreSQL does not allow to create a database table named 'user'. But MySQL will allow to create such a table.

是因为它是一个关键词吗?但是 Hibernate 无法识别任何问题(即使我们设置了 PostgreSQLDialect).

Is that because it is a key word? But Hibernate cannot identify any issue (even if we set the PostgreSQLDialect).

推荐答案

user 是一个保留字，将保留字用于标识符(表、列)通常不是一个好主意.

user is a reserved word and it's usually not a good idea use reserved words for identifiers (tables, columns).

如果你坚持这样做，你必须把表名放在双引号中:

If you insist on doing that you have to put the table name in double quotes:

create table "user" (...);

但是您在引用表格时总是需要使用双引号.此外，表名是区分大小写的."user" 与 "User" 是不同的表名.

But then you always need to use double quotes when referencing the table. Additionally the table name is then case-sensitive. "user" is a different table name than "User".

如果您想省去很多麻烦，请使用不同的名称.用户、user_account、...

If you want to save yourself a lot of trouble use a different name. users, user_account, ...

有关引用标识符的更多详细信息可以在手册中找到:http://www.postgresql.org/docs/current/static/sql-syntax-lexical.html#SQL-SYNTAX-IDENTIFIERS

More details on quoted identifiers can be found in the manual: http://www.postgresql.org/docs/current/static/sql-syntax-lexical.html#SQL-SYNTAX-IDENTIFIERS

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