ALTER SCHEMA name RENAME TO new_name ALTER SCHEMA name OWNER TO { new_owner | CURRENT_USER | SESSION_USER }
ALTER SCHEMA changes the definition of a schema.
You must own the schema to use ALTER SCHEMA. To rename a schema you must also have the CREATE privilege for the database. To alter the owner, you must also be a direct or indirect member of the new owning role, and you must have the CREATE privilege for the database. (Note that superusers have all these privileges automatically.)