相关疑难解决方法(0)

我的数据库中有以下数据:

|NO | model | date     | 
+---+-------+----------+
|1  | bee   |2011-12-01|
|2  | bee   |2011-12-05|
|3  | bee   |2011-12-12|
|4  | tar   |2011-12-13|

我想获得每个模型组的最新日期:

| model | date     | 
+-------+----------+
| bee   |2011-12-12|
| tar   |2011-12-13|

我试过了:

SELECT model, date 
FROM doc
WHERE date ........????? //what is the next?
GROUP BY model