我是SQL的新手，需要一些查询帮助。我正在尝试使用以下查询查找MAX TradeCodeID。它没有返回我需要的数据。它几乎回归了。
select distinct
t.useremployeeid,
max(t.usertradeID),
t.Projectfullname,
t.userfirstname + ' '+ t.userlastname as GreatestPM
from
(select distinct
users.UserTradeId, UserEmployeeID, UserFirstName, UserLastName,
ProjectFullName, ProjectManager,
max(ScheduleDate) as LastDate
from
schedules
left outer join
users on ScheduleUserID = UserID
left outer join
Phases on SchedulePhaseID = PhaseID
left outer join
Projects on phases.ProjectID = projects.ProjectID
left outer join
UserTrades on UserTrades.UserTradeID = Users.UserTradeID
where
users.useractive = 1
and users.useremployeeid <> 0
and users.usertradeid between 21 and 24
and projectfullname is not null
group by
users.UserTradeid, UserEmployeeID, UserFirstName, UserLastName,
ProjectFullName, ProjectManager
having
max(scheduledate) > getdate() ) t
group by
t.projectfullname, t.userfirstname,t.userlastname, UserEmployeeID
order by
t.projectfullname
从以下数据集中：
useremployeeid UserTradeID Projectfullname GreatestPM
--------------------------------------------------------------------------------
12121 22 162331.05 John Smith
25487 21 166324.1 Chuck Norris
45639 21 166324.1 Brad Pitt
35789 23 166324.1 John Doe
15697 24 166324.1 Matt Damon
28957 23 166324.1 Taylor Swift
76985 21 166324.1 Tony Romo
25496 21 166324.1 George Strait
85695 22 167091.1 Robin Roberts
75632 21 167091.1 Scott Smith
66897 22 1663341.01 Garth Brooks
58766 21 1663341.01 Travis Tritt
37895 21 1663341.01 Sara Roberts
95687 21 1663352.01 Justin Timberlake
85697 24 1663352.01 Sally Walker
我希望得到以下结果：
useremployeeid UserTradeID Projectfullname GreatestPM
----------------------------------------------------------
12121 22 162331.05 John Smith
15697 24 166324.1 Matt Damon
85695 22 167091.1 Robin Roberts
66897 22 1663341.01 Garth Brooks
85697 24 1663352.01 Sally Walker
感谢您的帮助。