如何按分组依据中的其他列排序？

Question

I have the following articles mysql table:

id | date
 1 | 2013-02-16 00:00:00
 2 | 2013-02-17 00:00:00 

I want to get a comma separated list of the ids (1,2) and the last date value (2013-02-17 00:00:00)

I use the following query:

SELECT GROUP_CONCAT(id),date FROM articles ORDER BY date DESC

The query selects the first date value it encounters (2013-02-16 00:00:00), how to make it select the last one instead?

Thanks

Answer 1

select group_concat(id), 
       max(date) as max_date
from your_table

SQLFiddle demo

Answer 2

What about use MAX :

SELECT GROUP_CONCAT(id),MAX(date) 
FROM articles 

And the fiddle: http://sqlfiddle.com/#!2/4e957/3

Answer 3

用这个：

SELECT GROUP_CONCAT(id),date FROM articles ORDER BY date ASC