Need help in sql query of Time Management system - sql

Question

I have 2 tables 1 is EMployeeMaster and another is Attendance
***EmployeeMaster***
EmployeeId EmployeeName DepartmentId
1 ABC 1
2 XYZ 2
3 PQR 2
4 WXY 1
Now i have another table Attendance
***Attendance***
AttendanceId EmployeeId Date InTime OutTime
1 1 2011-04-04 00:00:00 10:00 AM 6:30 PM
2 2 2011-04-04 00:00:00 09:45 AM 7:10 PM
Once employee comes in office and put his finger on device his entry will be go to Attendance table with InTime ,EMployeeId and Date.
So the employee who is not come into office ,his entry will not exist in the Attendance table.
Now i want to generate daily report..It should show attendance of all the employee of company along with their Intime/outTime by date.
All the employees who are absent they also should be displayed in this report.
So i want :
EmployeeId EMployeeName DepartmentId Date InTime OutTime
1 ABC 1 2011-04-04 00:00:00 10:00 AM 6:30 PM
2 XYZ 2 2011-04-04 00:00:00 09:45 AM 7:10 PM
3 PQR 2 NULL/- NULL/- NULL/-
4 WXY 1 NULL/- NULL/- NULL/-
Can you tell me what should be query???

Answer 1

You should use a left outer join.
declare #E table (EmployeeId int, EmployeeName varchar(50), DepartmentId int)
declare #A table (AttendanceId int, EmployeeId int, [Date] date, InTime time, OutTime time)
insert into #E values
(1, 'ABC', 1),
(2, 'XYZ', 2),
(3, 'PQR', 2),
(4, 'WXY', 1)
insert into #A values
(1, 1, '2011-04-04 00:00:00', '10:00 AM', '6:30 PM'),
(2, 2, '2011-04-04 00:00:00', '09:45 AM', '7:10 PM')
select
E.EmployeeId,
E.EmployeeName,
E.DepartmentId,
A.[Date],
A.InTime,
A.OutTime
from #E as E
left outer join #A as A
on E.EmployeeId = A.EmployeeId and
A.[Date] = '2011-04-04 00:00:00'
Result
EmployeeId EmployeeName DepartmentId Date InTime OutTime
----------- -------------------------------------------------- ------------ ---------- ---------------- ----------------
1 ABC 1 2011-04-04 10:00:00.0000000 18:30:00.0000000
2 XYZ 2 2011-04-04 09:45:00.0000000 19:10:00.0000000
3 PQR 2 NULL NULL NULL
4 WXY 1 NULL NULL NULL
Edit 1
If you need to do this for one month I would use some kind of number table or calendar table. Here I have used a cte to build the calendar using #FromDate and #ToDate
declare #E table (EmployeeId int, EmployeeName varchar(15), DepartmentId int)
declare #A table (AttendanceId int, EmployeeId int, [Date] date, InTime time, OutTime time)
insert into #E values
(1, 'ABC', 1),
(2, 'XYZ', 2),
(3, 'PQR', 2),
(4, 'WXY', 1)
insert into #A values
(1, 1, '2011-04-02', '04:00 AM', '4:30 PM'),
(2, 2, '2011-04-02', '05:00 AM', '5:30 PM'),
(3, 1, '2011-04-03', '06:00 AM', '6:30 PM'),
(4, 2, '2011-04-03', '07:00 AM', '7:30 PM'),
(5, 1, '2011-04-04', '08:00 AM', '8:30 PM'),
(6, 2, '2011-04-05', '09:00 AM', '9:10 PM')
-- Set FromDate to first day of month
declare #FromDate date = '20110401'
-- Set ToDate to last day of month
declare #ToDate date = '20110405'
-- Create cte with all dates between FromDate and ToDate
;with cteCal as
(
select #FromDate as [Date]
union all
select dateadd(d, 1, [Date]) as [Date]
from cteCal
where [Date] < #ToDate
)
select
E.EmployeeId,
E.EmployeeName,
E.DepartmentId,
C.[Date],
A.InTime,
A.OutTime
from cteCal as C
cross join #E as E
left outer join #A as A
on E.EmployeeId = A.EmployeeId and
C.[Date] = A.[Date]
order by C.[Date], E.EmployeeName
option (maxrecursion 0)

Answer 2

Should look like this:
select
EmployeeId,
EmployeeName,
DepartmentId,
Date,
InTime,
OutTime
from EmployeeMaster em
left join Attendance a on em.EmployeeId=a.EmployeeId and Date='2011-04-04 00:00:00'

Answer 3

select E.EmloyeeId, EmployeeName, DepartmentId, Date, InTime, OutTime
from EmployeeMaster as e
LEFT JOIN Attendance as a ON a.EmloyeeId = e.EmloyeeId