result_object()

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

row([$n = 0[, $type = 'object']])

dbprefix([$table = ''])

row_array([$n = 0])

CodeIgniter’s database abstraction allows you to use transactions with databases that support transaction-safe table types. In MySQL, you’ll need to be running InnoDB or BDB

get_compiled_delete([$table = ''[, $reset = TRUE]])

repair_table($table_name)

limit($value[, $offset = 0])

initialize()