Related
Hello I am working on a dataset for a report in SSRS
and I have a query which gives the total requests in the backlog :
SELECT
COUNT(*) as NB
FROM p_rqt WITH (NOLOCK)
INNER JOIN p_cpy WITH (NOLOCK) ON p_cpy.CpyInCde = p_rqt.OrigCpyInCde
WHERE
CpyTypInCde IN (27, 31)
AND p_rqt.RqtNatInCde IN (74, 75, 76)
AND HeadRqtInCde = 0
AND p_rqt.OrigCpyInCde LIKE CASE WHEN #Client = 0 THEN '%' ELSE #Client END
AND ((RcvDte < DATEADD(day, 1, #DateDeb) AND RqtEndDte IS NULL) OR
(RcvDte < DATEADD(day, 1, #DateDeb) AND RqtEndDte > DATEADD(day, 1, #DateDeb)))
and I want to retrieve the total amount left per day.
I tried lot of things like this :
SELECT CONVERT(date,rcvdte,103), count(*) as nb
FROM p_rqt p WITH (NOLOCK)
INNER JOIN p_cpy WITH (NOLOCK) ON p_cpy.CpyInCde = p.OrigCpyInCde
WHERE
CpyTypInCde IN (27, 31)
AND p.RqtNatInCde IN (74, 75, 76)
AND HeadRqtInCde = 0
AND ((RcvDte < DATEADD(day, 1, '20170901') AND RqtEndDte IS NULL) OR (RcvDte < DATEADD(day, 1, '20170901') AND RqtEndDte > DATEADD(day, 1, '20170901')))
group by CONVERT(date,rcvdte,103)
order by CONVERT(date,rcvdte,103)
I tried inner join subqueries, Sum and other stuff
but all I can manage to do is to have the number of records added per day
and I want something like this :
date: NB:
01/01/2017 1950
02/01/2017 1954 (+4 items)
03/01/2017 1945 (-9 items)
Thank you
Use LAG:
WITH cte AS (
SELECT
CONVERT(date, rcvdte, 103) AS date,
COUNT(*) AS nb
FROM p_rqt p WITH (NOLOCK)
INNER JOIN p_cpy WITH (NOLOCK)
ON p_cpy.CpyInCde = p.OrigCpyInCde
WHERE
CpyTypInCde IN (27, 31) AND
p.RqtNatInCde IN (74, 75, 76) AND
HeadRqtInCde = 0 AND
((RcvDte < DATEADD(day, 1, '20170901') AND RqtEndDte IS NULL) OR (RcvDte < DATEADD(day, 1, '20170901') AND RqtEndDte > DATEADD(day, 1, '20170901')))
GROUP BY CONVERT(date, rcvdte, 103)
ORDER BY CONVERT(date, rcvdte, 103)
)
SELECT
t1.date,
(SELECT SUM(t2.nb) FROM cte t2 WHERE t2.date <= t1.date) AS nb,
CASE WHEN t1.nb - LAG(t1.nb, 1, t1.nb) OVER (ORDER BY t1.date) > 0
THEN '(+' + (t1.nb - LAG(t1.nb, 1, t1.nb) OVER (ORDER BY t1.date)) + ' items)'
ELSE '(' + (t1.nb - LAG(t1.nb, 1, t1.nb) OVER (ORDER BY t1.date)) + ' items)'
END AS difference
FROM cte t1
ORDER BY t1.date;
So i found a solution but it is really slow,
i still post the answer anyway
DECLARE #Tb TABLE ( Colonne1 Datetime, Colonne2 INT )
DECLARE #Debut Datetime = '01/09/2017'
WHILE #Debut < '13/09/2017'
BEGIN
DECLARE #Compteur int = (
SELECT
COUNT(1) NB
FROM p_rqt WITH (NOLOCK)
INNER JOIN p_cpy WITH (NOLOCK) ON p_cpy.CpyInCde = p_rqt.OrigCpyInCde
WHERE
CpyTypInCde IN (27, 31)
AND p_rqt.RqtNatInCde IN (74, 75, 76)
AND HeadRqtInCde = 0
AND p_rqt.OrigCpyInCde LIKE '%'
AND (
(RcvDte < #Debut AND RqtEndDte IS NULL)
OR
(RcvDte < #Debut AND RqtEndDte > #Debut)
)
)
INSERT INTO #Tb (Colonne1, Colonne2) VALUES (#Debut, #Compteur)
SET #Debut = DATEADD(day, 1, #Debut)
IF #Debut > '13/09/2017'
BREAK
ELSE
CONTINUE
END
SELECT * FROM #Tb
So I wrote a script that would show monthly premium. Say if you want to view the total premium up to November, you can pass through a parameter in in SSRS to pick 1/1/2016 - 11/30/2016. This would only show the data up until november, hoever, I would like to show it up until december even if there are no records there. How do I go about doing this in SQL? Here is my script so far:
SELECT lc.[Date]
,lc.Carrier
,lc.[Direct Ceded Written Premium]
,cast(cast(year(lc.[date]) as varchar(4)) + '-' + cast(month(lc.[date]) as varchar(2)) + '-01' as date) as [begofmonth]
from
(
SELECT
CASE
WHEN pd.TransactionEffDate < pd.TransactionDate THEN cast(pd.TransactionDate as DATE)
WHEN pd.TransactionEffDate < pd.EffectiveDate THEN cast(pd.EffectiveDate as DATE)
ELSE cast(pd.TransactionEffDate as date)
END AS [Date]
,CASE WHEN LEFT(PD.POLICYNUM, 3) = 'ORV'
THEN 'Palomar Value Select OR'
WHEN LEFT(PD.POLICYNUM, 3) = 'VSE'
THEN 'Palomar Value Select CA'
WHEN LEFT(PD.POLICYNUM, 3) = 'WAV'
THEN 'Palomar Value Select WA'
ELSE 'Palomar' END AS [Carrier]
,ISNULL(SUM(pd.WrittenPremium), 0) AS [Direct Ceded Written Premium]
FROM premdetail pd
JOIN transactionpremium tp ON pd.systemid = tp.systemid
AND pd.transactionpremiumid = tp.id
JOIN transactionhistory th ON tp.systemid = th.systemid
AND tp.cmmcontainer = th.cmmcontainer
AND tp.parentid = th.id
JOIN basicpolicy bp ON th.systemid = bp.systemid
AND th.cmmcontainer = bp.cmmcontainer
AND th.parentid = bp.id
WHERE
(CASE
WHEN pd.TransactionEffDate < pd.TransactionDate THEN pd.TransactionDate
WHEN pd.TransactionEffDate < pd.EffectiveDate THEN pd.EffectiveDate
ELSE pd.TransactionEffDate
END) > = CAST(#StartDate AS DATE)
AND (CASE
WHEN pd.TransactionEffDate < pd.TransactionDate THEN pd.TransactionDate
WHEN pd.TransactionEffDate < pd.EffectiveDate THEN pd.EffectiveDate
ELSE pd.TransactionEffDate
END) < CAST(#EndDate + 1 AS DATE)
AND (bp.carriercd = #ResEQCarrierCd
OR #ResEQCarrierCd = 'All')
GROUP BY
CASE
WHEN pd.TransactionEffDate < pd.TransactionDate THEN cast(pd.TransactionDate as DATE)
WHEN pd.TransactionEffDate < pd.EffectiveDate THEN cast(pd.EffectiveDate as DATE)
ELSE cast(pd.TransactionEffDate as date)
END
,CONVERT(VARCHAR, pd.EffectiveDate, 101)
,CONVERT(VARCHAR, pd.ExpirationDate, 101)
,CASE
WHEN LEFT(PD.POLICYNUM, 3) = 'ORV'
THEN 'Palomar Value Select OR'
WHEN LEFT(PD.POLICYNUM, 3) = 'VSE'
THEN 'Palomar Value Select CA'
WHEN LEFT(PD.POLICYNUM, 3) = 'WAV'
THEN 'Palomar Value Select WA'
ELSE 'Palomar'
END
,CASE
WHEN pd.TransactionCode = 'EN' THEN CONVERT(VARCHAR, th.TransactionEffectiveDt, 101)
ELSE ''
END
,CONVERT(VARCHAR, DATEADD(ms, -3, DATEADD(mm, DATEDIFF(m, 0, th.transactiondt) + 1, 0)), 101)
,CASE
WHEN pd.TransactionEffDate < CAST(CONVERT(VARCHAR, pd.TransactionDate, 101) AS SMALLDATETIME) THEN CONVERT(VARCHAR, pd.TransactionDate, 101)
WHEN pd.TransactionEffDate < pd.EffectiveDate THEN CONVERT(VARCHAR, pd.EffectiveDate, 101)
ELSE CONVERT(VARCHAR, pd.TransactionEffDate, 101)
END
) lc
ORDER BY lc.[Date], lc.[Carrier], lc.[Direct Ceded Written Premium]
With the parameter that I have, it would only show up until November. However, I would like it to show the whole year, up to December at in this case, even if there are no data there since I didn't pick the enddate variable to be december. I attached an example screenshot of what it should look like when exported to excel.
Just to give you an idea:
declare #tbl TABLE(ID INT IDENTITY,SomeValue VARCHAR(100),SomeDate DATE);
INSERT INTO #tbl VALUES('Some date in March',{d'2016-03-05'}),('Some date in June',{d'2016-06-30'});
WITH AllMonths AS
(
SELECT 1 AS MonthIndex
UNION ALL SELECT 2
UNION ALL SELECT 3
UNION ALL SELECT 4
UNION ALL SELECT 5
UNION ALL SELECT 6
UNION ALL SELECT 7
UNION ALL SELECT 8
UNION ALL SELECT 9
UNION ALL SELECT 10
UNION ALL SELECT 11
UNION ALL SELECT 12
)
SELECT MonthIndex
,t.*
FROM AllMonths
LEFT JOIN #tbl AS t ON MONTH(t.SomeDate)=MonthIndex
The result
1 NULL NULL NULL
2 NULL NULL NULL
3 1 Some date in March 2016-03-05
4 NULL NULL NULL
5 NULL NULL NULL
6 2 Some date in June 2016-06-30
7 NULL NULL NULL
8 NULL NULL NULL
9 NULL NULL NULL
10 NULL NULL NULL
11 NULL NULL NULL
12 NULL NULL NULL
There are many ways to create a tally table
CTE with ROW_NUMBER()
A list like in my example
A physical table
It is a good idea to maintain a numbers/DATE table!
In a previous answer I showed one way to create such a table.
My scenario is as below:
#StartDate = 13th of current month
#EndDate = 12th of next month.
I want to get all the date with the day-name for Mondays, Tuesdays, Wednesdays, Thursdays, Fridays, Saturdays and Sundays lying between the start and end date.
Try this:
declare #startDate datetime = '2016-01-13'
declare #endDate datetime = '2016-02-12'
;with dateRange as
(
select [Date] = dateadd(dd, 1, #startDate)
where dateadd(dd, 1, #startDate) < #endDate
union all
select dateadd(dd, 1, [Date])
from dateRange
where dateadd(dd, 1, [Date]) < #endDate
)
select [Date], datename(dw,[Date])
from dateRange
To count the number of each day as per your comment (this should be part of the question really), change the last part of James' answer to this:
select datename(dw,[Date]) as day_name, count([Date]) as number_days
from dateRange group by datename(dw,[Date]), datepart(DW,[Date])
order by datepart(DW,[Date]);
You can try something like this :
DECLARE #StartDate DATETIME
DECLARE #StartDateFixed DATETIME
DECLARE #EndDate DATETIME
DECLARE #NumberOfDays int
SET #StartDate = '2016/01/01'
SET #EndDate = '2016/01/02'
SET #NumberOfDays = DATEDIFF(DAY,#StartDate,#EndDate) + 1
SET #StartDateFixed = DATEADD(DD,-1,#StartDate)
SELECT WeekDay , COUNT(WeekDay)
FROM (
SELECT TOP (#NumberOfDays) WeekDay = DATENAME(DW , DATEADD(DAY,ROW_NUMBER() OVER(ORDER BY spt.name), #StartDateFixed))
FROM [master].[dbo].[spt_values] spt
) A
GROUP BY WeekDay
The output will be
WeekDay
------------------------------ -----------
Friday 1
Saturday 1
(2 row(s) affected)
In case if you need to get current and next date from date number specified such as 13 and 12
Current Month
DECLARE #cur_mont INT = (SELECT MONTH(GETDATE()))
Current Year
DECLARE #cur_year INT = (SELECT YEAR(GETDATE()))
Next Month
DECLARE #nxt_mont INT = (SELECT MONTH(DATEADD(month, 1, GETDATE())))
Next Month year (In case of December year change)
DECLARE #nxt_year INT = (SELECT YEAR(DATEADD(month, 1, GETDATE())))
Create start date
DECLARE #startDate DATETIME = (SELECT CAST(CAST(#cur_year AS varchar) + '-' + CAST(#cur_mont AS varchar) + '-' + CAST(13 AS varchar) AS DATETIME))
Create end date
DECLARE #endDate DATETIME = (SELECT CAST(CAST(#nxt_year AS varchar) + '-' + CAST(#nxt_mont AS varchar) + '-' + CAST(12 AS varchar) AS DATETIME))
Dates between start and end date
SELECT TOP (DATEDIFF(DAY, #startDate, #endDate) + 1)
DATEADD(DAY, ROW_NUMBER() OVER(ORDER BY a.object_id) - 1, #startDate) AS Date,
DATENAME(DW, DATEADD(DAY, ROW_NUMBER() OVER(ORDER BY a.object_id) - 1, #startDate)) AS Day
FROM sys.all_objects a CROSS JOIN sys.all_objects b;
DECLARE #dayStart int = 13, --The day of current month
#dayEnd int = 12, --The day of another month
#howManyMonth int = 1, --How many month to take
#dateStart date,
#dateEnd date
--Here we determine range of the dates
SELECT #dateStart = CONVERT (date,
CAST(DATEPART(Year,GETDATE()) as nvarchar(5))+ '-' +
CASE WHEN LEN(CAST(DATEPART(Month,GETDATE()) as nvarchar(5))) = 1
THEN '0'+CAST(DATEPART(Month,GETDATE()) as nvarchar(5))
ELSE CAST(DATEPART(Month,GETDATE()) as nvarchar(5)) END + '-' +
CAST (#dayStart as nvarchar(5))),
#dateEnd = CONVERT (date,
CAST(DATEPART(Year,DATEADD(Month,#howManyMonth,GETDATE())) as nvarchar(5))+ '-' +
CASE WHEN LEN(CAST(DATEPART(Month,DATEADD(Month,#howManyMonth,GETDATE())) as nvarchar(5))) = 1
THEN '0'+CAST(DATEPART(Month,DATEADD(Month,#howManyMonth,GETDATE())) as nvarchar(5))
ELSE CAST(DATEPART(Month,DATEADD(Month,#howManyMonth,GETDATE())) as nvarchar(5)) END + '-' +
CAST (#dayEnd as nvarchar(5)))
;WITH cte AS (
SELECT #dateStart as date_
UNION ALL
SELECT DATEADD(day,1,date_)
FROM cte
WHERE DATEADD(day,1,date_) <= #dateEnd
)
--Get results
SELECT DATENAME(WEEKDAY,date_) as [DayOfWeek],
COUNT(*) as [DaysCount]
FROM cte
GROUP BY DATEPART(WEEKDAY,date_),
DATENAME(WEEKDAY,date_)
ORDER BY DATEPART(WEEKDAY,date_)
OPTION (MAXRECURSION 0)
Output:
DayOfWeek DaysCount
----------- -----------
Sunday 4
Monday 4
Tuesday 4
Wednesday 5
Thursday 5
Friday 4
Saturday 4
(7 row(s) affected
I'm in the process of writing a stored procedure (for SQL Server 2012) that is supposed to calculate the number of hours for our employee from 16-15th of every month.
I have the following database structure
I have written a stored procedure to calculate the hours but I think I can only get the week start date to filter my condition. The stored procedure is returning me the wrong result because the weekly start date is not always the 16th.
CREATE PROCEDURE [dbo].[spGetTotalHoursBetween16to15EveryMonth]
AS
BEGIN
SET NOCOUNT ON
BEGIN TRY
DECLARE #SixteenthDate datetime2(7) = DATEADD(DAY, 15, DATEADD(MONTH, DATEDIFF(MONTH, 0, GETDATE()), 0))
DECLARE #currentDate datetime2(7) = getDate()
DECLARE #LastSixteenthDate datetime2(7) = DATEADD(DAY, 15, DATEADD(MONTH, DATEDIFF(MONTH, 0, DATEADD(mm, DATEDIFF(mm, 0, GETDATE()) - 1, 0)), 0))
IF(#currentDate >= #SixteenthDate)
BEGIN
SELECT
(Sum(Day1Hours) + sum(Day2Hours) + Sum(Day3Hours) +
sum(Day4Hours) + Sum(Day5Hours) + sum(Day6Hours) + Sum(Day7Hours)) AS Total
FROM
dbo.TimeSheets
WHERE
WeekStartDate BETWEEN DATEADD(wk, DATEDIFF(wk, 0, #SixteenthDate), -1) AND #currentDate
END
ELSE
BEGIN
SELECT
(Sum(Day1Hours) + sum(Day2Hours) + Sum(Day3Hours) +
sum(Day4Hours) + Sum(Day5Hours) + sum(Day6Hours) + Sum(Day7Hours)) AS Total
FROM
dbo.TimeSheets
WHERE
WeekStartDate BETWEEN DATEADD(wk, DATEDIFF(wk, 0, #LastSixteenthDate), -1) AND #currentDate
END
END TRY
BEGIN CATCH
THROW
END CATCH
END
I'd probably just do it the simple way:
declare #today date = convert(date,current_timestamp)
declare #prev_month_end date = dateadd( day , -day(#today) , #today )
declare #period_start date = dateadd( day , 16 , #prev_month_end ) -- 16th of THIS month
declare #period_end date = dateadd( month , 1 , #period_start ) -- 16th of NEXT month
select #period_start = dateadd(month, -1 , #period_start ) ,
#period_end = dateadd(month, -1 , #period_end )
where day(#today) < 16
select total_hours = coalesce(sum(t.hours),0)
from ( select id = t.id , report_date = dateadd(day,0,t.WeekStartDate) , hours = t.Day1Hours from dbo.TimeSheets t
union all select id = t.id , report_date = dateadd(day,1,t.WeekStartDate) , hours = t.Day2Hours from dbo.TimeSheets t
union all select id = t.id , report_date = dateadd(day,2,t.WeekStartDate) , hours = t.Day3Hours from dbo.TimeSheets t
union all select id = t.id , report_date = dateadd(day,3,t.WeekStartDate) , hours = t.Day4Hours from dbo.TimeSheets t
union all select id = t.id , report_date = dateadd(day,4,t.WeekStartDate) , hours = t.Day5Hours from dbo.TimeSheets t
union all select id = t.id , report_date = dateadd(day,5,t.WeekStartDate) , hours = t.Day6Hours from dbo.TimeSheets t
union all select id = t.id , report_date = dateadd(day,6,t.WeekStartDate) , hours = t.Day7Hours from dbo.TimeSheets t
) t
where t.report_date >= #period_start
and t.report_date < #period_end
Always start with start or an end of a month.
E.g. Here's some logic
Start Date = Start date of previous month + 16
End Date = Start date of current month + 15
Following might help you figure out the dates
-- First Day of the month
select DATEADD(mm, DATEDIFF(mm,0,getdate()), 0)
-- Last Day of previous month
select dateadd(ms,-3,DATEADD(mm, DATEDIFF(mm,0,getdate() ), 0))
More examples are here
Life is easier with a little data normalization. Don't work from the spreadsheet-style table
CREATE VIEW Timesheets_Normalized AS
SELECT
[id]
,[Date] = DATEADD(day,[Date_Offset],[WeekStartDate])
,[Hours]
FROM MyTable a
UNPIVOT([Hours] FOR [Date_Column] IN (Day1Hours,Day2Hours,Day3Hours,Day4Hours,Day5Hours,Day6Hours,Day7Hours)) b
INNER JOIN (VALUES (0,'Day1Hours'),(1,'Day2Hours'),(2,'Day3Hours'),(3,'Day4Hours'),(4,'Day5Hours'),(5,'Day6Hours'),(6,'Day7Hours')) c([Date_Offset],[Date_Column])
ON (b.[Date_Column] = c.[Date_Column])
Then you can get your answers very simply:
SELECT
MIN([Date]) AS [PayrollMonthStart]
,MAX([Date]) AS [PayrollMonthEnd]
,SUM([Hours]) AS [TotalHours]
FROM Timesheets_Normalized
GROUP BY YEAR(DATEADD(day,-15,[Date])),MONTH(DATEADD(day,-15,[Date]))
HAVING CAST(GETDATE() AS date) BETWEEN MIN([Date]) AND MAX([Date])
I want to calculate the number of working days between 2 given dates. For example if I want to calculate the working days between 2013-01-10 and 2013-01-15, the result must be 3 working days (I don't take into consideration the last day in that interval and I subtract the Saturdays and Sundays). I have the following code that works for most of the cases, except the one in my example.
SELECT (DATEDIFF(day, '2013-01-10', '2013-01-15'))
- (CASE WHEN DATENAME(weekday, '2013-01-10') = 'Sunday' THEN 1 ELSE 0 END)
- (CASE WHEN DATENAME(weekday, DATEADD(day, -1, '2013-01-15')) = 'Saturday' THEN 1 ELSE 0 END)
How can I accomplish this? Do I have to go through all the days and check them? Or is there an easy way to do this.
Please, please, please use a calendar table. SQL Server doesn't know anything about national holidays, company events, natural disasters, etc. A calendar table is fairly easy to build, takes an extremely small amount of space, and will be in memory if it is referenced enough.
Here is an example that creates a calendar table with 30 years of dates (2000 -> 2029) but requires only 200 KB on disk (136 KB if you use page compression). That is almost guaranteed to be less than the memory grant required to process some CTE or other set at runtime.
CREATE TABLE dbo.Calendar
(
dt DATE PRIMARY KEY, -- use SMALLDATETIME if < SQL Server 2008
IsWorkDay BIT
);
DECLARE #s DATE, #e DATE;
SELECT #s = '2000-01-01' , #e = '2029-12-31';
INSERT dbo.Calendar(dt, IsWorkDay)
SELECT DATEADD(DAY, n-1, '2000-01-01'), 1
FROM
(
SELECT TOP (DATEDIFF(DAY, #s, #e)+1) ROW_NUMBER()
OVER (ORDER BY s1.[object_id])
FROM sys.all_objects AS s1
CROSS JOIN sys.all_objects AS s2
) AS x(n);
SET DATEFIRST 1;
-- weekends
UPDATE dbo.Calendar SET IsWorkDay = 0
WHERE DATEPART(WEEKDAY, dt) IN (6,7);
-- Christmas
UPDATE dbo.Calendar SET IsWorkDay = 0
WHERE MONTH(dt) = 12
AND DAY(dt) = 25
AND IsWorkDay = 1;
-- continue with other holidays, known company events, etc.
Now the query you're after is quite simple to write:
SELECT COUNT(*) FROM dbo.Calendar
WHERE dt >= '20130110'
AND dt < '20130115'
AND IsWorkDay = 1;
More info on calendar tables:
http://web.archive.org/web/20070611150639/http://sqlserver2000.databases.aspfaq.com/why-should-i-consider-using-an-auxiliary-calendar-table.html
More info on generating sets without loops:
http://www.sqlperformance.com/tag/date-ranges
Also beware of little things like relying on the English output of DATENAME. I've seen several applications break because some users had a different language setting, and if you're relying on WEEKDAY be sure you set your DATEFIRST setting appropriately...
For stuff like this i tend to maintain a calendar table that also includes bank holidays etc.
The script i use for this is as follows (Note that i didnt write it # i forget where i found it)
SET DATEFIRST 1
SET NOCOUNT ON
GO
--Create ISO week Function (thanks BOL)
CREATE FUNCTION ISOweek ( #DATE DATETIME )
RETURNS INT
AS
BEGIN
DECLARE #ISOweek INT
SET #ISOweek = DATEPART(wk, #DATE) + 1 - DATEPART(wk, CAST(DATEPART(yy, #DATE) AS CHAR(4)) + '0104')
--Special cases: Jan 1-3 may belong to the previous year
IF ( #ISOweek = 0 )
SET #ISOweek = dbo.ISOweek(CAST(DATEPART(yy, #DATE) - 1 AS CHAR(4)) + '12' + CAST(24 + DATEPART(DAY, #DATE) AS CHAR(2))) + 1
--Special case: Dec 29-31 may belong to the next year
IF ( ( DATEPART(mm, #DATE) = 12 )
AND ( ( DATEPART(dd, #DATE) - DATEPART(dw, #DATE) ) >= 28 )
)
SET #ISOweek = 1
RETURN(#ISOweek)
END
GO
--END ISOweek
--CREATE Easter algorithm function
--Thanks to Rockmoose (http://www.sqlteam.com/forums/topic.asp?TOPIC_ID=45689)
CREATE FUNCTION fnDLA_GetEasterdate ( #year INT )
RETURNS CHAR(8)
AS
BEGIN
-- Easter date algorithm of Delambre
DECLARE #A INT ,
#B INT ,
#C INT ,
#D INT ,
#E INT ,
#F INT ,
#G INT ,
#H INT ,
#I INT ,
#K INT ,
#L INT ,
#M INT ,
#O INT ,
#R INT
SET #A = #YEAR % 19
SET #B = #YEAR / 100
SET #C = #YEAR % 100
SET #D = #B / 4
SET #E = #B % 4
SET #F = ( #B + 8 ) / 25
SET #G = ( #B - #F + 1 ) / 3
SET #H = ( 19 * #A + #B - #D - #G + 15 ) % 30
SET #I = #C / 4
SET #K = #C % 4
SET #L = ( 32 + 2 * #E + 2 * #I - #H - #K ) % 7
SET #M = ( #A + 11 * #H + 22 * #L ) / 451
SET #O = 22 + #H + #L - 7 * #M
IF #O > 31
BEGIN
SET #R = #O - 31 + 400 + #YEAR * 10000
END
ELSE
BEGIN
SET #R = #O + 300 + #YEAR * 10000
END
RETURN #R
END
GO
--END fnDLA_GetEasterdate
--Create the table
CREATE TABLE MyDateTable
(
FullDate DATETIME NOT NULL
CONSTRAINT PK_FullDate PRIMARY KEY CLUSTERED ,
Period INT ,
ISOWeek INT ,
WorkingDay VARCHAR(1) CONSTRAINT DF_MyDateTable_WorkDay DEFAULT 'Y'
)
GO
--End table create
--Populate table with required dates
DECLARE #DateFrom DATETIME ,
#DateTo DATETIME ,
#Period INT
SET #DateFrom = CONVERT(DATETIME, '20000101')
--yyyymmdd (1st Jan 2000) amend as required
SET #DateTo = CONVERT(DATETIME, '20991231')
--yyyymmdd (31st Dec 2099) amend as required
WHILE #DateFrom <= #DateTo
BEGIN
SET #Period = CONVERT(INT, LEFT(CONVERT(VARCHAR(10), #DateFrom, 112), 6))
INSERT MyDateTable
( FullDate ,
Period ,
ISOWeek
)
SELECT #DateFrom ,
#Period ,
dbo.ISOweek(#DateFrom)
SET #DateFrom = DATEADD(dd, +1, #DateFrom)
END
GO
--End population
/* Start of WorkingDays UPDATE */
UPDATE MyDateTable
SET WorkingDay = 'B' --B = Bank Holiday
--------------------------------EASTER---------------------------------------------
WHERE FullDate = DATEADD(dd, -2, CONVERT(DATETIME, dbo.fnDLA_GetEasterdate(DATEPART(yy, FullDate)))) --Good Friday
OR FullDate = DATEADD(dd, +1, CONVERT(DATETIME, dbo.fnDLA_GetEasterdate(DATEPART(yy, FullDate))))
--Easter Monday
GO
UPDATE MyDateTable
SET WorkingDay = 'B'
--------------------------------NEW YEAR-------------------------------------------
WHERE FullDate IN ( SELECT MIN(FullDate)
FROM MyDateTable
WHERE DATEPART(mm, FullDate) = 1
AND DATEPART(dw, FullDate) NOT IN ( 6, 7 )
GROUP BY DATEPART(yy, FullDate) )
---------------------MAY BANK HOLIDAYS(Always Monday)------------------------------
OR FullDate IN ( SELECT MIN(FullDate)
FROM MyDateTable
WHERE DATEPART(mm, FullDate) = 5
AND DATEPART(dw, FullDate) = 1
GROUP BY DATEPART(yy, FullDate) )
OR FullDate IN ( SELECT MAX(FullDate)
FROM MyDateTable
WHERE DATEPART(mm, FullDate) = 5
AND DATEPART(dw, FullDate) = 1
GROUP BY DATEPART(yy, FullDate) )
--------------------AUGUST BANK HOLIDAY(Always Monday)------------------------------
OR FullDate IN ( SELECT MAX(FullDate)
FROM MyDateTable
WHERE DATEPART(mm, FullDate) = 8
AND DATEPART(dw, FullDate) = 1
GROUP BY DATEPART(yy, FullDate) )
--------------------XMAS(Move to next working day if on Sat/Sun)--------------------
OR FullDate IN ( SELECT CASE WHEN DATEPART(dw, FullDate) IN ( 6, 7 ) THEN DATEADD(dd, +2, FullDate)
ELSE FullDate
END
FROM MyDateTable
WHERE DATEPART(mm, FullDate) = 12
AND DATEPART(dd, FullDate) IN ( 25, 26 ) )
GO
---------------------------------------WEEKENDS--------------------------------------
UPDATE MyDateTable
SET WorkingDay = 'N'
WHERE DATEPART(dw, FullDate) IN ( 6, 7 )
GO
/* End of WorkingDays UPDATE */
--SELECT * FROM MyDateTable ORDER BY 1
DROP FUNCTION fnDLA_GetEasterdate
DROP FUNCTION ISOweek
--DROP TABLE MyDateTable
SET NOCOUNT OFF
Once you have created the table, finding the number of working days is easy peasy:
SELECT COUNT(FullDate) AS WorkingDays
FROM dbo.tbl_WorkingDays
WHERE WorkingDay = 'Y'
AND FullDate >= CONVERT(DATETIME, '10/01/2013', 103)
AND FullDate < CONVERT(DATETIME, '15/01/2013', 103)
Note that this script includes UK bank holidays, i'm not sure what region you're in.
Here's a simple function that counts working days not including Saturday and Sunday (when counting holidays isn't necessary):
CREATE FUNCTION dbo.udf_GetBusinessDays (
#START_DATE DATE,
#END_DATE DATE
)
RETURNS INT
WITH EXECUTE AS CALLER
AS
BEGIN
DECLARE #NUMBER_OF_DAYS INT = 0;
DECLARE #DAY_COUNTER INT = 0;
DECLARE #BUSINESS_DAYS INT = 0;
DECLARE #CURRENT_DATE DATE;
DECLARE #DAYNAME NVARCHAR(9)
SET #NUMBER_OF_DAYS = DATEDIFF(DAY, #START_DATE, #END_DATE);
WHILE #DAY_COUNTER <= #NUMBER_OF_DAYS
BEGIN
SET #CURRENT_DATE = DATEADD(DAY, #DAY_COUNTER, #START_DATE)
SET #DAYNAME = DATENAME(WEEKDAY, #CURRENT_DATE)
SET #DAY_COUNTER += 1
IF #DAYNAME = N'Saturday' OR #DAYNAME = N'Sunday'
BEGIN
CONTINUE
END
ELSE
BEGIN
SET #BUSINESS_DAYS += 1
END
END
RETURN #BUSINESS_DAYS
END
GO
This is the method I normally use (When not using a calendar table):
DECLARE #T TABLE (Date1 DATE, Date2 DATE);
INSERT #T VALUES ('20130110', '20130115'), ('20120101', '20130101'), ('20120611', '20120701');
SELECT Date1, Date2, WorkingDays
FROM #T t
CROSS APPLY
( SELECT [WorkingDays] = COUNT(*)
FROM Master..spt_values s
WHERE s.Number BETWEEN 1 AND DATEDIFF(DAY, t.date1, t.Date2)
AND s.[Type] = 'P'
AND DATENAME(WEEKDAY, DATEADD(DAY, s.number, t.Date1)) NOT IN ('Saturday', 'Sunday')
) wd
If like I do you have a table with holidays in you can add this in too:
SELECT Date1, Date2, WorkingDays
FROM #T t
CROSS APPLY
( SELECT [WorkingDays] = COUNT(*)
FROM Master..spt_values s
WHERE s.Number BETWEEN 1 AND DATEDIFF(DAY, t.date1, t.Date2)
AND s.[Type] = 'P'
AND DATENAME(WEEKDAY, DATEADD(DAY, s.number, t.Date1)) NOT IN ('Saturday', 'Sunday')
AND NOT EXISTS
( SELECT 1
FROM HolidayTable ht
WHERE ht.Date = DATEADD(DAY, s.number, t.Date1)
)
) wd
The above will only work if your dates are within 2047 days of each other, if you are likely to be calculating larger date ranges you can use this:
SELECT Date1, Date2, WorkingDays
FROM #T t
CROSS APPLY
( SELECT [WorkingDays] = COUNT(*)
FROM ( SELECT [Number] = ROW_NUMBER() OVER(ORDER BY s.number)
FROM Master..spt_values s
CROSS JOIN Master..spt_values s2
) s
WHERE s.Number BETWEEN 1 AND DATEDIFF(DAY, t.date1, t.Date2)
AND DATENAME(WEEKDAY, DATEADD(DAY, s.number, t.Date1)) NOT IN ('Saturday', 'Sunday')
) wd
I did my code in SQL SERVER 2008 (MS SQL) . It works fine for me. I hope it will help you.
DECLARE #COUNTS int,
#STARTDATE date,
#ENDDATE date
SET #STARTDATE ='01/21/2013' /*Start date in mm/dd/yyy */
SET #ENDDATE ='01/26/2013' /*End date in mm/dd/yyy */
SET #COUNTS=0
WHILE (#STARTDATE<=#ENDDATE)
BEGIN
/*Check for holidays*/
IF ( DATENAME(weekday,#STARTDATE)<>'Saturday' and DATENAME(weekday,#STARTDATE)<>'Sunday')
BEGIN
SET #COUNTS=#COUNTS+1
END
SET #STARTDATE=DATEADD(day,1,#STARTDATE)
END
/* Display the no of working days */
SELECT #COUNTS
By Combining #Aaron Bertrand's answer and the Easter Calculation from #HeavenCore's and adding some code of my own, this code creates a calendar from 2000 to 2049 that includes UK (England) Bank Holidays. Usage and notes as per Aaron's answer:
DECLARE #s DATE, #e DATE;
SELECT #s = '2000-01-01' , #e = '2049-12-31';
-- Insert statements for procedure here
CREATE TABLE dbo.Calendar
(
dt DATE PRIMARY KEY, -- use SMALLDATETIME if < SQL Server 2008
IsWorkDay BIT
);
INSERT dbo.Calendar(dt, IsWorkDay)
SELECT DATEADD(DAY, n-1, '2000-01-01'), 1
FROM
(
SELECT TOP (DATEDIFF(DAY, #s, #e)+1) ROW_NUMBER()
OVER (ORDER BY s1.[object_id])
FROM sys.all_objects AS s1
CROSS JOIN sys.all_objects AS s2
) AS x(n);
SET DATEFIRST 1;
-- weekends
UPDATE dbo.Calendar SET IsWorkDay = 0
WHERE DATEPART(WEEKDAY, dt) IN (6,7);
-- Christmas
UPDATE dbo.Calendar SET IsWorkDay = 0
WHERE IsWorkDay = 1 and MONTH(dt) = 12 and
(DAY(dt) in (25,26) or
(DAY(dt) in (27, 28) and DATEPART(WEEKDAY, dt) IN (1,2)) );
-- New Year
UPDATE dbo.Calendar SET IsWorkDay = 0
WHERE IsWorkDay = 1 and MONTH(dt) = 1 AND
( DAY(dt) = 1 or (DAY(dt) IN (2,3) AND DATEPART(WEEKDAY, dt)=1 ));
-- Easter
UPDATE dbo.Calendar SET IsWorkDay = 0
WHERE dt = DATEADD(dd, -2, CONVERT(DATETIME, dbo.fnDLA_GetEasterdate(DATEPART(yy, dt)))) --Good Friday
OR dt = DATEADD(dd, +1, CONVERT(DATETIME, dbo.fnDLA_GetEasterdate(DATEPART(yy, dt)))) --Easter Monday
-- May Day (first Monday in May)
UPDATE dbo.Calendar SET IsWorkDay = 0
WHERE MONTH(dt) = 5 AND DATEPART(WEEKDAY, dt)=1 and DAY(DT)<8;
-- Spring Bank Holiday (last Monday in May apart from 2022 when moved to include Platinum Jubilee bank holiday)
UPDATE dbo.Calendar SET IsWorkDay = 0
WHERE
(YEAR(dt)=2022 and MONTH(dt) = 6 AND DAY(dt) IN (2,3)) OR
(YEAR(dt)<>2022 and MONTH(dt) = 5 AND DATEPART(WEEKDAY, dt)=1 and DAY(DT)>24);
-- Summer Bank Holiday (last Monday in August)
UPDATE dbo.Calendar SET IsWorkDay = 0
WHERE MONTH(dt) = 8 AND DATEPART(WEEKDAY, dt)=1 and DAY(DT)>24;