> For the complete documentation index, see [llms.txt](https://docs.postgresql.tw/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.postgresql.tw/reference/sql-commands/sql-createuser.md).

# CREATE USER

### CREATE USER

CREATE USER — define a new database role

### Synopsis

```

CREATE USER name [ [ WITH ] option [ ... ] ]

where option can be:

      SUPERUSER | NOSUPERUSER
    | CREATEDB | NOCREATEDB
    | CREATEROLE | NOCREATEROLE
    | INHERIT | NOINHERIT
    | LOGIN | NOLOGIN
    | REPLICATION | NOREPLICATION
    | BYPASSRLS | NOBYPASSRLS
    | CONNECTION LIMIT connlimit
    | [ ENCRYPTED ] PASSWORD 'password' | PASSWORD NULL
    | VALID UNTIL 'timestamp'
    | IN ROLE role_name [, ...]
    | IN GROUP role_name [, ...]
    | ROLE role_name [, ...]
    | ADMIN role_name [, ...]
    | USER role_name [, ...]
    | SYSID uid
```

### Description

`CREATE USER` is now an alias for [`CREATE ROLE`](/reference/sql-commands/sql-createrole.md). The only difference is that when the command is spelled `CREATE USER`, `LOGIN` is assumed by default, whereas `NOLOGIN` is assumed when the command is spelled `CREATE ROLE`.

### Compatibility

The `CREATE USER` statement is a PostgreSQL extension. The SQL standard leaves the definition of users to the implementation.

### See Also

[CREATE ROLE](/reference/sql-commands/sql-createrole.md)

***

原文：[PostgreSQL 18.6 Documentation](https://www.postgresql.org/docs/18/sql-createuser.html)（英文原文，待翻譯）


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