复制代码 代码如下:
SELECT
*
FROM
(
SELECT
userid,
classid,
remark,
ROW_NUMBER () OVER (
PARTITION BY userid,
classid
ORDER BY
addtime DESC
) AS row_bank
FROM
Eng24VIPCourseIntention
) AS ta
WHERE
row_bank = 1
==========================
PARTITIONBYuserid,classid 这里是按什么分组， 注意一下。
SELECT
*
FROM
(
SELECT
userid,
classid,
remark,
ROW_NUMBER () OVER (
PARTITION BY userid,
classid
ORDER BY
addtime DESC
) AS row_bank
FROM
Eng24VIPCourseIntention
) AS ta
WHERE
row_bank = 1
==========================
PARTITIONBYuserid,classid 这里是按什么分组， 注意一下。
标签：
分组,排序,重复
免责声明：本站文章均来自网站采集或用户投稿，网站不提供任何软件下载或自行开发的软件！
如有用户或公司发现本站内容信息存在侵权行为，请邮件告知！ 858582#qq.com
内蒙古资源网 Copyright www.nmgbbs.com
暂无“SQL分组排序去重复的小实例”评论...