从分组的MySQL数据获取最新的日期 [英] Get the latest date from grouped MySQL data

问题描述

我在我的数据库中有以下数据：

I have the following data in my database:

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

我想获取每个模型组的最新日期：

I want to get the latest date of each model group:

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

我试过：

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

推荐答案

每个模型的最大日期？

SELECT model, max(date) FROM doc
GROUP BY model

如果您正在寻找与整个表的最大日期匹配的所有模型...

If you're looking for all models matching the max date of the entire table...

SELECT model, date FROM doc
WHERE date IN (SELECT max(date) FROM doc)

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