query($sql[, $binds = FALSE[, $return_object = NULL]])

group_by($by[, $escape = NULL])

cache_delete([$segment_one = ''[, $segment_two = '']])

cache_on()

dbprefix([$table = ''])

or_group_start()

$this->db->call_function(); This function enables you to call PHP database functions that are not natively included in CodeIgniter,

or_not_like($field[, $match = ''[, $side = 'both'[, $escape = NULL]]])

Information From Executing a Query $this->db->insert_id() The insert ID number when

num_rows()