finding duration worked between time ranges from login and logout time

[rameshsambu]

Hi Folks
I am in a difficult situation right now. Please help me.
There are several stores and several employees.
employees can work in multiple stores and stores have multiple employees
the time they work are calculated based on the time they log in and log out.
for this purpose there is a logins table which has following fields.
emp_id, store_id, login_time, logout_time
emp_id stores the employee id
store_id stores the store id
login_time will have the time of logging in by the employee (datetime)
logout_time will have the time of logging out by the employee (datetime)
there is a manager for every store. he/she will be concerned with the store.
what I need is a way to find out the total working time in minutes for a store
within a particular date range
for eg. from 11/1/06 7:30 am to 11/5/06 6:pm for store id 7
i want the system to return something like
employee_id time
-------- -----
45 780 minutes
34 327 minutes

-Ramesh

[pankaj_chetry]

Hi Folks
I am in a difficult situation right now. Please help me.
There are several stores and several employees.
employees can work in multiple stores and stores have multiple employees
the time they work are calculated based on the time they log in and log out.
for this purpose there is a logins table which has following fields.
emp_id, store_id, login_time, logout_time
emp_id stores the employee id
store_id stores the store id
login_time will have the time of logging in by the employee (datetime)
logout_time will have the time of logging out by the employee (datetime)
there is a manager for every store. he/she will be concerned with the store.
what I need is a way to find out the total working time in minutes for a store
within a particular date range
for eg. from 11/1/06 7:30 am to 11/5/06 6:pm for store id 7
i want the system to return something like

[Memento]

Might a SQL query like this work?

SELECT employee, SUM(login_date_time-logout_date_time) as empTime 
  FROM login_log_table
 WHERE login_date_time BETWEEN X and Y
 GROUP BY employee

[cfAllie]

Hi Ramesh,

This example might be more complex than what you need, but it should give you a starting point. Caveat - This example only counts the time that fall within @start and @end period. So for example if an employee started work at 11/1/06 6:30AM, and you entered a @start date of 11/1/06 7:30 am, the hour between 6:30AM and 7:30AM would not be counted.

--- counts ONLY the time worked between @start and @end 
SELECT    e.emp_id,
    SUM 
    ( 
        DATEDIFF 
        (n,
        CASE WHEN login_time < @start THEN @start ELSE login_time END,
        CASE WHEN logout_time > @end THEN @end ELSE logout_time END
        ) 
    ) 
    AS TotalTimeWithinDateRange
FROM    LoginTable lt 
    INNER JOIN Store s ON lt.store_id = s.store_id
    INNER JOIN Employee e ON lt.emp_id = e.emp_id
WHERE    s.store_id = @store_id AND 
    (
        (lt.login_time BETWEEN @start AND @end) OR
        (lt.logout_time BETWEEN @start AND @end) OR
        (lt.login_time <= @start and logout_time >= @end)
    )
GROUP BY e.emp_id