[英]SQL User Transactions
I have a table with multiple users that keeps track of application login date and time. 我有一个包含多个用户的表,用于跟踪应用程序登录日期和时间。
I am looking for a way to pull the last date they log on to the app 1 entry per user? 我正在寻找一种方法来提取他们每位用户登录应用程序1条目的最后日期?
Column1 = userid
Column2 = date
I have try multiple examples but none are working as bellow: 我尝试了多个示例,但没有一个像下面这样工作:
select *
from
(select *
from ACCTRANS
ORDER BY TIMESTAMP DESC) AS x
GROUP BY
USERID
SELECT UserId, MAX(TIMESTAMP)
FROM ACCTRANS
GROUP BY UserId
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