<create_user_statement>
::=
CREATE USER <user_name>
PASSWORD <password>
[<user_mode>]
[TIMEOUT <unsigned_integer>]
[COSTWARNING <unsigned_integer>]
[COSTLIMIT <unsigned_integer>]
[[NOT] EXCLUSIVE]
[DEFAULTCODE <ASCII | UNICODE>]
| CREATE USER <user_name> PASSWORD <password> LIKE <source_user>
| CREATE USER <user_name> PASSWORD <password> USERGROUP <usergroup_name>