数据重复了,只需要其中一条
-- id 重复了,取出其中一条 SELECT id,member_seq,point,gmt_create FROM XXXX WHERE and gmt_create > "2020-07-20 00:00:00" and gmt_create < "2020-07-26 23:59:59" AND point > 0 GROUP BY id,member_seq,point,gmt_create -- id 重复了,取出其中一条 数据没有重复,取出最早的一条数据 -- 从最新的数据中取出 制作中的数据 SELECT id,user_id,material_id,status FROM ( -- https://blog.csdn.net/qq_37111953/article/details/80916820 -- 取出每个用户最新的一条用户物料数据 select a.id,a.user_id,a.material_id,a.status from ( select * from xxxxxx where activity_id = n and ds = 20100622 ) a left join ( select * from xxxxxx where activity_id = n and ds = 20100622 ) b on a.user_id=b.user_id and a.gmt_create原文地址:https://www.cnblogs.com/ctaixw/p/13358886.html