Prova così:
SELECT `order_id`, MAX( order_history_id )
FROM `order_history`
GROUP BY `order_id`
o così:
SELECT `order_id` , `order_status_id`
FROM `order_history` A,
(SELECT MAX( order_history_id ) order_history_id
FROM `order_history`
GROUP BY `order_id`) B
WHERE A.order_history_id=B.order_history_id
WHERE A.`order_history_id`
Ciao
Mik

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