case when in sqlserver - sql-server

Question

i try to use case in for my condition to show out which is late,but after i use case when my result show out too many result.
select
grp.checktime,
--min(CONVERT(smalldatetime,l.checktime)) as clockin,
--max(CONVERT(smalldatetime,l.checktime)) as clockout,
ClockIn = case when min(cast(l.checktime as time)) <= cast(sc.StartTime as time)
then convert(varchar(100), cast(l.checktime as time), 100)
else 'Late ClockIn ' + convert(varchar(100), cast(l.checktime as time), 100)
end,
Clockout = case when max(cast(l.checktime as time)) >= cast(sc.EndTime as time)
then convert(varchar(100), cast(l.checktime as time), 100)
else 'Early ClockOut ' + convert(varchar(100), cast(l.checktime as time), 100)
end,
l.userid,
u.showname,
u.BADGENUMBER
from checkinout l
inner join userinfo u on l.userid = u.userid
inner join UserUsedsclasses uuc on u.userid = uuc.userid
inner join SchClass sc on uuc.SchId = sc.schClassid
inner join (
select distinct CONVERT(Date,checktime) as checktime
from checkinout
group by CONVERT(Date,checktime)
) as grp on grp.checktime = CONVERT(Date, l.checktime)
where uuc.SchId = 1 and u.badgenumber = 107
and u.badgenumber not in (79, 103, 78)
and l.checktime >= dateadd(month, datediff(month, 0, GETDATE() ) , 0)
and l.checktime < dateadd(month, datediff(month, 0, GETDATE ())+1, 0)
group by grp.checktime,l.userid,u.showname,u.BADGENUMBER,sc.StartTime,l.checktime,sc.EndTime
my result show me

Answer 1

Change your group by to group by the date of l.checktime.
select
grp.checktime,
--min(convert(smalldatetime,l.checktime)) as clockin,
--max(convert(smalldatetime,l.checktime)) as clockout,
ClockIn = case when min(cast(l.checktime as time)) <= cast(sc.StartTime as time)
then convert(varchar(100), cast(l.checktime as time), 100)
else 'Late ClockIn ' + convert(varchar(100), cast(l.checktime as time), 100)
end,
Clockout = case when max(cast(l.checktime as time)) >= cast(sc.EndTime as time)
then convert(varchar(100), cast(l.checktime as time), 100)
else 'Early ClockOut ' + convert(varchar(100), cast(l.checktime as time), 100)
end,
l.userid,
u.showname,
u.BADGENUMBER
from checkinout l
inner join userinfo u on l.userid = u.userid
inner join UserUsedsclasses uuc on u.userid = uuc.userid
inner join SchClass sc on uuc.SchId = sc.schClassid
inner join (
select distinct convert(Date,checktime) as checktime
from checkinout
group by convert(Date,checktime)
) as grp on grp.checktime = convert(Date, l.checktime)
where uuc.SchId = 1 and u.badgenumber = 107
and u.badgenumber not in (79, 103, 78)
and l.checktime >= dateadd(month, datediff(month, 0, getdate() ) , 0)
and l.checktime < dateadd(month, datediff(month, 0, getdate ())+1, 0)
group by
grp.checktime
, l.userid
, u.showname
, u.BADGENUMBER
, sc.StartTime
, convert(date, l.checktime)
, sc.EndTime