mysql排序后取第一条数据

<span style="font-size:18px;">select * from user order by create_time desc</span>

想取得这个集合的第一条数据

SELECT
group_concat(id ORDER BY `create_time` DESC)
FROM
`user`
GROUP BY
user_code

进一步优化下：

SELECT
SUBSTRING_INDEX(
group_concat(id ORDER BY `create_time` DESC),
',',
1
) id
FROM
`user`
GROUP BY
user_code