How to orderby before groupby by mysql?

I find the question at mysql order and groupby

but it not works,

I get the same solution:

SELECT * 
FROM (
    SELECT * 
    FROM user 
    ORDER BY create_time DESC
) AS user 
GROUP BY user.role

to implement list the newest user开发者_运维知识库 of each role

but mysql's view can't work with subselect.

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Mysql doesn't support a first/last function

The answer in the link you provided, is based on the face that HAVING will pick the last item:

SELECT * 
FROM user 
GROUP BY user.role
HAVING  create_time = MAX(create_time)