Active Record method chaining - doesn't work with update?

The following methods do not return $this, so another db method can not be used after them in a chain:
count_all_results()
dbprefix()
delete()
empty_table()
get()
get_compiled_delete()
get_compiled_insert()
get_compiled_select()
get_compiled_update()
get_where()
insert()
insert_batch()
replace()
set_dbprefix()
truncate()
update()
update_batch()

Additionally, reset_query() returns $this and therefore can be chained, but it will reset your query, so it's more likely to be useful at the beginning of a chain than the end...

Bonfire

Practical CodeIgniter 3
CodeIgniter Testing Guide