Re: CREATE USER and pg_user

"William ZHANG" <uniware(at)zedware(dot)org> writes:
> Why not change the option "createuser" to "superuser",

Backwards compatibility with existing dump files.

> or do something to make is easier to understand?

See
http://developer.postgresql.org/docs/postgres/sql-createrole.html

SUPERUSER
NOSUPERUSER

These clauses determine whether the new role is a "superuser", who can override all access restrictions within the
database. Superuser status is dangerous and should be used only when really needed. You must yourself be a
superuser to create a new superuser. If not specified, NOSUPERUSER is the default.

...

CREATEUSER
NOCREATEUSER

These clauses are an obsolete, but still accepted, spelling of SUPERUSER and NOSUPERUSER. Note that they are
not equivalent to CREATEROLE as one might naively expect!

regards, tom lane