Calculating fractions of hours from time date range

Question

Hello friends,
I'm using sql server 2008 r2 and I have a table called attendance with the following fields
attendance_no    int
attendance_date    date
attendance_timein    time(7)
attendance_timeout    time(7)
emp_id    int   
and another table called employee with the following fields
emp_id int
emp_name  varchar(50)
emp_tel  varchar(50)
I need to calculate the total minutes worked as well as total hours worked for each employee with in a specified date range and I created the below query which working fine but it is not calculating the  fractions of hours, I mean when an employee works
for example 7 and half hours, its showing just 7 hours instead of 7.5 hours.
SELECT a.attendance_date As 'Date',e.emp_id As 'ID',e.emp_name As 'Name',e.emp_tel As 'Telephone',left(a.attendance_timein,8)[Time in],left(a.attendance_timeout,8)[Time out],
   + CAST(DATEDIFF(second, attendance_timein, attendance_timeout) / 60 AS NVARCHAR(50)) As 'Total minutes',
   CAST(DATEDIFF(second,attendance_timein,attendance_timeout) / 60 /60 % 60 AS NVARCHAR(50)) As 'Total hours'
    from attendance a join employee e on e.emp_id=a.emp_id and a.attendance_date between '2014-11-06' and '2014-11-08'  and e.emp_tel='65098009'
I would appreciate any help about this.
Thanks in advance
Mohamoud

Answer 1

If I understand correctly, according to
Mohamoud's data sample, there is already Total minutes in the input (the above
table Mohamoud posted)
and all he need is a simple convert to decimal and the divided by 60.
select [Total minutes] / 60.c
Mohamoud,
is that correct?
The result show that you might need some rounding. for example 31/60 is 0.516666 while you show us 0.5
Please clarify if you need rounding and how many characters after the dot you need (this can be done using declaring decimal(x,y), converting, or multipla and using floor function, etc')
  Ronen Ariely
 [Personal Site]    [Blog]    [Facebook]