Calculate total business working days between two dates - sql

Question

select count(distinct(dateadd(d, 0, datediff(d, 0,checktime)))) as workingdays
from departments,
dbo.USERINFO INNER JOIN dbo.CHECKINOUT ON
dbo.USERINFO.USERID = dbo.CHECKINOUT.USERID
where userinfo.name='Gokul Gopalakrishnan' and deptname='GEN/SUP-TBL'
and checktime>='2014-05-01' and checktime<='2014-05-30'
from the above code I am able to find total working days of employee between two dates.
workingdays
20
but now I want other column name total business days. I want to calculate total business days between two dates.
workingdays businessdays
20 21
how can i do this?

Answer 1

If you only want to exclude weekends then you can simply just exclude these using a conditional count by adding:
count(distinct case when datepart(weekday, getdate()) <= 5 then date end)
So your query becomes:
set datefirst 1;
select count(distinct(dateadd(d, 0, datediff(d, 0,checktime)))) as workingdays,
count(distinct case when datepart(weekday, getdate()) <= 5
then dateadd(d, 0, datediff(d, 0,checktime))
end) as weekdays
from departments,
dbo.USERINFO INNER JOIN dbo.CHECKINOUT ON
dbo.USERINFO.USERID = dbo.CHECKINOUT.USERID
where userinfo.name='Gokul Gopalakrishnan' and deptname='GEN/SUP-TBL'
and checktime>='2014-05-01' and checktime<='2014-05-30'
HOWEVER I would really recommend adding a calendar table to your database. It makes everything so easy, your query would become:
SELECT DaysWorked = COUNT(cio.Date),
WeekDaysWorked = COUNT(CASE WHEN c.IsWeekDay = 1 THEN cio.Date END),
WorkingDaysWorked = COUNT(CASE WHEN c.IsWorkingDay = 1 THEN cio.Date END),
TotalDays = COUNT(*),
TotalWeekDays = COUNT(CASE WHEN c.IsWeekDay = 1 THEN 1 END),
TotalWorkingDays = COUNT(CASE WHEN c.IsWorkingDay = 1 THEN 1 END)
FROM dbo.Calender AS c
LEFT JOIN
( SELECT DISTINCT
Date = CAST(CheckTime AS DATE)
FROM dbo.Departments AS d
CROSS JOIN dbo.userInfo AS ui
INNER JOIN dbo.CheckInOut AS cio
ON cio.UserID = ui.UserID
WHERE ui.Name = 'Gokul Gopalakrishnan'
AND d.deptname = 'GEN/SUP-TBL'
) AS cio
ON c.Date = cio.Date
WHERE d.Date >= '2014-05-01'
AND d.Date <= '2014-05-30';
This way you can define public holidays, weekends, etc. It is so much more flexible than any other solution.
EDIT
I think I misunderstood your original criteria. This should work for you with no calendar table:
SET DATEFIRST 1;
DECLARE #StartDate DATE = '2014-05-01',
#EndDate DATE = '2014-05-30';
DECLARE #Workdays INT =
(DATEDIFF(DAY, #StartDate, #EndDate) + 1)
-(DATEDIFF(WEEK, #StartDate, #EndDate) * 2)
-(CASE WHEN DATEPART(WEEKDAY, #StartDate) = 7 THEN 1 ELSE 0 END)
-(CASE WHEN DATEPART(WEEKDAY, #EndDate) = 6 THEN 1 ELSE 0 END);
SELECT WorkingDays = COUNT(DISTINCT CAST(CheckTime AS DATE)),
BusinessDays = #Workdays
FROM dbo.Departments AS d
CROSS JOIN dbo.userInfo AS ui
INNER JOIN dbo.CheckInOut AS cio
ON cio.UserID = ui.UserID
WHERE ui.Name = 'Gokul Gopalakrishnan'
AND d.deptname = 'GEN/SUP-TBL'
AND cio.CheckTime >= #StartDate
AND cio.CheckTime <= #EndDate;

Answer 2

following query calculate Fridays count between #FromDate and #ToDate variable
((DATEDIFF(DAY,#FromDate,#ToDate)-(6-DATEPART(dw,#FromDate)))/7)*2
Following query calculate Working day count and business day count between to date :
DECLARE #FromDate DATE = '2014-05-01',
#ToDate DATE = '2014-05-30'
SELECT COUNT(DISTINCT CAST(checktime AS Date)) as workingdays,
DATEDIFF(DAY,#FromDate,#ToDate) -
((DATEDIFF(DAY,#FromDate,#ToDate)-(6-DATEPART(dw,#FromDate)))/7)*2 AS BusinessDay
from departments,
dbo.USERINFO INNER JOIN dbo.CHECKINOUT ON
dbo.USERINFO.USERID = dbo.CHECKINOUT.USERID
where userinfo.name='Gokul Gopalakrishnan' and deptname='GEN/SUP-TBL'
and checktime>= #FromDate and checktime<=#ToDate