DB abstraction library like codeigniter

[djingo]

Does any one know of a light weight DB abstraction library like the one codeigniter has.I had a look at Pear:MDB but its not what I am looking for.I am looking for chaining features. For eg:\[code\]$this->db->get_where('table_name', 'condition')->row()->'column_name' ;\[/code\]This makes syntax very compact.TIA,NB : I am not at all looking for an ORM as might be inferred from the discussion or otherwise.