In a view have these two dates coming from a table:
2014-12-17 14:01:03.523 - 2014-12-20 09:59:28.783
I need to know the date diff in hours assuming that in a day i can count the hours just from 08 AM and 5 PM.
Of course saturdays and sundays must not be included.
I tried using this code inside the select but i only got the diff in days, excluding saturdays and sundays.
(DATEDIFF(HOUR, convert(datetime,t.EXT_DATAINS-2), convert(datetime,b.EXT_DATAINS-2)) + 1)
-(DATEDIFF(wk, convert(datetime,t.EXT_DATAINS-2), convert(datetime,b.EXT_DATAINS-2)) * 2)
-(CASE WHEN DATENAME(dw, convert(datetime,t.EXT_DATAINS-2)) = 'Sunday' THEN 1 ELSE 0 END)
-(CASE WHEN DATENAME(dw, convert(datetime,b.EXT_DATAINS-2)) = 'Saturday' THEN 1 ELSE 0 END) differenza
Example:
2014-12-17 : 3hrs
2014-12-18 : 8hrs
2014-12-19 : 8hrs
2014-12-20 : 2hrs
Tot : 21hrs
Use a Recursive CTE to get all Hours with Dates.
METHOD 1 : Get all dates with hours between FromDate and ToDate
DECLARE #FROMDATE DATETIME='2014-12-17 14:01:03.523'
DECLARE #TODATE DATETIME='2014-12-20 09:59:28.783'
;WITH CTE AS
(
SELECT #FROMDATE FROMDATE
UNION ALL
SELECT DATEADD(HH,1,FROMDATE)
FROM CTE
WHERE FROMDATE<#TODATE
)
SELECT ISNULL(CAST(CAST(FROMDATE AS DATE)AS VARCHAR(12)),'Tot')FROMDATE,
CAST(COUNT(FROMDATE)AS VARCHAR(4))+'hrs' [HOURS]
FROM CTE
WHERE DATEPART(HH,FROMDATE) BETWEEN 9 AND 16
AND DATENAME(DW,FROMDATE)<>'SATURDAY' AND DATENAME(DW,FROMDATE)<>'SUNDAY'
GROUP BY CAST(FROMDATE AS DATE)
WITH ROLLUP
SQL FIDDLE
METHOD 2 : Gets missing dates between FromDate and ToDate with 8 as hardcoded as Hrs
This method will be more implementable - Performance Tuned
DECLARE #FROMDATE DATETIME='2014-12-17 14:01:03.523'
DECLARE #TODATE DATETIME='2014-12-20 09:59:28.783'
;WITH CTE AS
(
-- Get missing dates between FromDate and ToDate
SELECT DATEADD(DAY,1,#FROMDATE) FROMDATE,8 HRS
UNION ALL
SELECT DATEADD(DAY,1,FROMDATE),8
FROM CTE
WHERE FROMDATE < DATEADD(DAY,-1,#TODATE)
)
,CTE2 AS
(
-- Gets the Hours for FromDate
SELECT CAST(#FROMDATE AS DATE) DATES, CAST(CAST(DATEDIFF
(
MINUTE,#FROMDATE,CAST(CAST(CAST(#FROMDATE AS DATE) AS VARCHAR(12))+' 17:00:00' AS DATETIME)
)AS NUMERIC(18,2))/60 AS DECIMAL(18,0)) HRS
WHERE DATENAME(DW,#FROMDATE)<>'SATURDAY' AND DATENAME(DW,#FROMDATE)<>'SUNDAY'
UNION ALL
-- Select Hours in between dates
SELECT CAST(FROMDATE AS DATE) NEWDATE,HRS
FROM CTE
WHERE DATENAME(DW,FROMDATE)<>'SATURDAY' AND DATENAME(DW,FROMDATE)<>'SUNDAY'
UNION ALL
-- Select Hours for ToDate
SELECT CAST(#TODATE AS DATE), CAST(CAST(DATEDIFF
(
MINUTE,CAST(CAST(CAST(#TODATE AS DATE) AS VARCHAR(12))+' 08:00:00' AS DATETIME),#TODATE
)AS NUMERIC(18,2))/60 AS DECIMAL(18,0))
WHERE DATENAME(DW,#TODATE)<>'SATURDAY' AND DATENAME(DW,#TODATE)<>'SUNDAY'
)
-- Use ROLLUP to find the sum of Hours and show it in last row
SELECT ISNULL(CAST(DATES AS VARCHAR(20)),'Tot')DATES,
CAST(SUM(HRS)AS VARCHAR(4))+'hrs' HRS
FROM CTE2
GROUP BY DATES
WITH ROLLUP
SQL FIDDLE
#marco burrometo
Create a static table which will have all the calendar functionality like holiday functionality,saturday and sunday is a holiday. It will help you a lot.
Related
Starting data:
Desired results something like this:
So it calculated the number of hours until the end of StartDateTime, if the EndDateTime is greater than end of day for StartDateTime. Then for every full day in between, it calculates 24 hours (this could stretch numerous days). And then when it gets to the EndDateTime - it calculates time from midnight (morning) to EndDateTime
I'm reading that I will probably need to use a recursive CTE, but I don't have any experience with recursions and am struggling.
this might get tricky, but I guess it can be solved using so called number table - i.e. table which has only one column populated with number sequence. In our case 0 based sequence.
The trick here is to get the number of days between start and end datetime. This value used in join between the data table and the numbers table will create the needed extra rows for each per day interval.
Of course we also have to setup properly start and end datetime of each day interval (CASE terms in the CTE)
Then we get for each per day interval number of minutes and divide by 60 to get proper decimal value.
Hope this helps.
Lets see the code:
-- input data
DECLARE #v_Dates TABLE
(
id varchar(20),
StartDateTime SMALLDATETIME,
EndDateTime SMALLDATETIME
)
INSERT INTO #v_Dates (id, StartDateTime, EndDateTime)
VALUES ('example 1', '02-17-2019 0:45', '02-19-19 12:30'),
('example 2', '02-21-2019 18:00', '02-22-19 12:15'),
('example 3', '02-22-2019 20:15', '02-22-19 20:30');
-- so called Number table which holds numbers 0 - 9999 in this case
DECLARE #v_Numbers TABLE
(
Number INT
);
-- populating the number table
INSERT INTO #v_Numbers
SELECT TOP 10000 ROW_NUMBER() OVER(ORDER by t1.number) - 1 as Number
FROM master..spt_values t1
CROSS JOIN master..spt_values t2
-- we parse the dates into the per day intervals
;WITH IntervalsParsed(id, StartDateTime, EndDateTime, Number, IntervalStartDateTime, IntervalEndDateTime) AS
(
SELECT id
,StartDateTime
,EndDateTime
,Number
, InervalStartDateTime = CASE
WHEN D.StartDateTime > DATEADD(day, DATEDIFF(day, 0, D.StartDateTime), N.Number) THEN D.StartDateTime
ELSE DATEADD(day, DATEDIFF(day, 0, D.StartDateTime), N.Number)
END
, IntervalEndDateTime = CASE
WHEN D.EndDateTime < DATEADD(day, DATEDIFF(day, 0, D.StartDateTime), N.Number + 1) THEN D.EndDateTime
ELSE DATEADD(day, DATEDIFF(day, 0, D.StartDateTime), N.Number + 1)
END
FROM #v_Dates D
--this join basically creates the needed number of rows
INNER JOIN #v_Numbers N ON DATEDIFF(day, D.StartDateTime, D.EndDateTime) + 1 > N.Number
)
-- final select
SELECT id
, StartDateTime
, EndDateTime
, IntervalStartDateTime
, IntervalEndDateTime
, Number
, DecimalValue = CAST( DATEDIFF(minute, IntervalStartDateTime, IntervalEndDateTime) AS DECIMAL)/60
FROM IntervalsParsed
ORDER BY id, Number
Just another option is an ad-hoc tally table in concert with a CROSS APPLY
Example
Select A.[column1]
,A.[StartDateTime]
,A.[EndDateTime]
,Hours = sum(1) / 60.0
From #YourTable A
Cross Apply (
Select Top (DateDiff(MINUTE,[StartDateTime],[EndDateTime])+1)
D=DateAdd(MINUTE,-1+Row_Number() Over (Order By (Select Null)),[StartDateTime])
From master..spt_values n1,master..spt_values n2
) B
Group By [column1],[StartDateTime],[EndDateTime],cast(D as Date)
Returns
This may be little complicated, but here is one way to use recursive cte to get the output. You can add the start date with one day as long as it is less than end date of your column. Also declared a Static value to make sure we can get difference of 24 hours.
--Create a table
Select 'example1' exm, '2019-02-17 00:45:00' startdate, '2019-02-19 12:30:00' Enddate into #temp union all
Select 'example2' exm, '2019-02-21 18:00:00' startdate, '2019-02-22 12:15:00' Enddate union all
Select 'example3' exm, '2019-02-22 20:15:00' startdate, '2019-02-22 20:30:00' Enddate
Declare #datevalue time = '23:59:59'
;with cte as (select exm, startdate, enddate, case when datediff(day, startdate, enddate) = 0 then datediff(SECOND, startdate, enddate)
when datediff(day, startdate, enddate)>0 then
datediff(SECOND, cast(startdate as time), #datevalue)
end as Hoursn, cast(dateadd(day, 1,cast(startdate as date)) as smalldatetime) valueforhours from #temp
union all
select exm, startdate, enddate, case when datediff(day, valueforhours, enddate) = 0 then datediff(SECOND, valueforhours, enddate)
when datediff(day, valueforhours, enddate)>0 then datediff(SECOND, cast(valueforhours as time), #datevalue) end as Hoursn, case when datediff(day,valueforhours, enddate) > 0 then dateadd(day,1,valueforhours) end as valueforhours
from cte
where
valueforhours <= cast(enddate as date)
)
select exm, startdate, Enddate, round(Hoursn*1.0/3600,2) as [hours] from cte
order by exm
Output:
exm startdate Enddate hours
example1 2019-02-17 00:45:00 2019-02-19 12:30:00 23.250000
example1 2019-02-17 00:45:00 2019-02-19 12:30:00 24.000000
example1 2019-02-17 00:45:00 2019-02-19 12:30:00 12.500000
example2 2019-02-21 18:00:00 2019-02-22 12:15:00 6.000000
example2 2019-02-21 18:00:00 2019-02-22 12:15:00 12.250000
example3 2019-02-22 20:15:00 2019-02-22 20:30:00 0.250000
Good Day! I am working on a chart where I need to display all the days of the current week to show the sales per Week. So far, I am able to display all the days of the current week, I'm just having a trouble in displaying the sales for each day of the week.Since there are no records in the database for the days of the week, it the TOTAL_SALES column should all return a Null value. Instead, it returns the total sales recorded in the database. Here is my Stored Procedure query so far.
WITH DAYSOFTHEWEEK AS
(
SELECT 0 DAY
UNION ALL
SELECT DAY + 1 FROM DAYSOFTHEWEEK WHERE DAY < 6
)
SELECT DATEADD(DAY, DAY, DATEADD(DAY, 2-DATEPART(WEEKDAY, CONVERT (date, GETDATE())), CONVERT (date, GETDATE()))) AS DAY_OF_THE_WEEK,
SUM([ORDER].NET_AMOUNT) AS TOTAL_SALES
FROM DAYSOFTHEWEEK, [ORDER]
GROUP BY DAYSOFTHEWEEK.DAY
I tried adding this condition statement,
WHERE DAYSOFTHEWEEK.DAY IN ([ORDER].ORDER_DATE)
But it returns this error
Operand type clash: date is incompatible with int
Can someone help me out on this?Is there a work around with the code that I already have? Thanks in advance!
What I think you're after is a SUM of each day's sales for the current week with NULL if there are no sales. The secret is to left join your date list onto your data:
-- Setup some fake sales data
WITH TestData(N, Order_Date, Net_Amount) AS (
SELECT 1 N, CAST(GETDATE() AS DATE) Order_Date, RAND() * 100 Net_Amount
UNION ALL
SELECT N+1 N, CAST(GETDATE()-N/5 AS DATE) Order_Date, RAND(CHECKSUM(NEWID())) * 100 Net_Amount FROM TestData
WHERE N < 20
)
SELECT TestData.Order_Date, TestData.Net_Amount INTO #Order FROM TestData
--Set the first day of the week (if required)
SET DATEFIRST 7 --Sunday
;WITH Days(N,DayOfTheWeek) AS (
SELECT 1 N, DATEADD(DAY, 1-DATEPART(WEEKDAY, GETDATE()), CONVERT(DATE,GETDATE())) DayOfTheWeek
UNION ALL
SELECT N+1 N,DATEADD(DAY, 1, DayOfTheWeek) DayOfTheWeek FROM Days
WHERE N < 7
)
SELECT d.DayOfTheWeek, SUM(Net_Amount) TotalAmount
FROM Days d
LEFT JOIN #Order ON d.DayOfTheWeek = Order_Date
GROUP BY d.DayOfTheWeek
DayOfTheWeek TotalAmount
------------ ----------------------
2016-08-07 219.036784917497
2016-08-08 273.319570812461
2016-08-09 271.148114731087
2016-08-10 194.780039228967
2016-08-11 NULL
2016-08-12 NULL
2016-08-13 NULL
Here is every day this week, starting at your datefirst date, which can be temporarily varied for the query with SET DATEFIRST if you need to have some other week start date
I think you have some sales table there that you haven't shown us, you need to join to that on date, then group by
WITH DAYSOFTHEWEEK AS
(
SELECT cast(dateadd(
day,
-datepart(weekday,getdate()) + 1 ,
GETDATE()
)
as date) [DAY], 0 as cnt
UNION ALL
SELECT dateadd(day,1,[DAY]), cnt + 1 FROM DAYSOFTHEWEEK WHERE cnt < 6
)
select DAYSOFTHEWEEK.[day], SUM([ORDER].NET_AMOUNT) AS TOTAL_SALES from daysoftheweek
JOIN
SalesTable on
CAST(SalesTable.SalesDate date) = DAYSOFTHEWEEK.[day]
GROUP BY DAYSOFTHEWEEK.[day]
A little over complicated for me:
To get name of the week use, for example
SELECT DATENAME(dw,getdate())
But you really need something like this:
SELECT ProductName,Sum(Sales) From NameOfTable GROUP BY
DATENAME(ww,salesDate)
I'm trying to get all months in which no transaction is placed for the same year (If different years is not possible)
This is my query to get transactions between 2 dates, but don't know how can I select only months for which transaction in database is missing
SELECT *
FROM Installment
WHERE OrderId = 1
AND InstallmentDate
BETWEEN cast('8/02/2014' as date)
AND cast('12/25/2014' as date)
InstallmentId OrderId CustomerKey InstallmentAmount InstallmentDate
18 1 INS-1 3000 2014-09-03
92 1 INS-1 3000 2014-10-13
137 1 INS-1 3000 2014-11-05
in this case record for the 12th month and 8th month is missing, how can I get this with SQL Server Query ?
Update
select yymm.yy, yymm.mm
from (select distinct year(InstallmentDate) as yy, month(InstallmentDate) as mm
from Installment
where InstallmentDate BETWEEN '2014-09-02' and '2015-01-15'
) yymm left join
Installment i
on i.OrderId = 1 and
year(i.InstallmentDate) = yymm.yy and
month(i.InstallmentDate) = yymm.mm
where i.OrderId is not null;
Gordon's query is returning all the years and months from table between 2 dates, just by changing i.OrderId is null to i.OrderId is not null here is the out of his query
yy mm
2014 9
2014 10
2014 11
Expected Output (if possible)
yy mm
2014 12
2015 1
Using the following recursive CTE:
DECLARE #start DATE = '2014-09-02'
DECLARE #end DATE = '2015-01-15'
;WITH IntervalDates (date)
AS
(
SELECT #start
UNION ALL
SELECT DATEADD(MONTH, 1, date)
FROM IntervalDates
WHERE DATEADD(MONTH, 1, date)<=#end
)
SELECT YEAR(date) AS Year, MONTH(date) AS Month
FROM IntervalDates
you can get a list of all Years/Months between the two dates of interest:
Year Month
==============
2014 9
2014 10
2014 11
2014 12
2015 1
Using EXCEPT on the above CTE:
;WITH IntervalDates (date)
AS
(
SELECT #start
UNION ALL
SELECT DATEADD(MONTH, 1, date)
FROM IntervalDates
WHERE DATEADD(MONTH, 1, date)<=#end
)
SELECT YEAR(date) AS Year, MONTH(date) AS Month
FROM IntervalDates
EXCEPT
SELECT DISTINCT YEAR(InstallmentDate) AS yy, MONTH(InstallmentDate) AS mm
FROM Installment
WHERE OrderId = 1 AND InstallmentDate BETWEEN #start AND #end
yields the required result set:
Year Month
=============
2014 12
2015 1
To do this in SQL, you need to start with a list of months. Assuming you have at least one record for each month in the table, you can then get the missing dates easily using a subquery. The rest of the query is just a left join and checking for non-matches:
select yymm.yy, yymm.mm
from (select distinct year(InstallmentDate) as yy, month(InstallmentDate) as mm
from Installment
where InstallmentDate BETWEEN '2014-09-02' and '2015-01-15'
) yymm left join
Installment i
on i.OrderId = 1 and
year(i.InstallmentDate) = yymm.yy and
month(i.InstallmentDate) = yymm.mm
where i.OrderId is null;
Simplest way I can think of is to have a date dimension table that contains (at least) date, and 1st of month then. For creating one take a look at something like https://dba.stackexchange.com/questions/74957/best-approach-for-populating-date-dimension-table , although that one doesn't have firstOfMonthDate in it as my example show but the idea is the same.
then your query becomes
SELECT DISTINCT
firstOfMonthDate
FROM
dateRef dr
LEFT OUTER JOIN
InstallmentDate i ON dr.date = i.InstallmentDate AND i.OrderId = 1
WHERE
i.InstallmentDate IS NULL
AND
dr.date BETWEEN #startDate and #endDate
change firstOfMonthDate for fiscal month etc. as required. This would work across any range of dates you have in your table so different years wouldn't be an issue.
Try the below script. I retrieve all dates between the specified dates and use a LEFT JOIN to get those which are not present in your table:
DECLARE #startDate AS DATETIME, #endDate AS DATETIME
DECLARE #dates AS TABLE (CurrentDate DATETIME)
SET #startDate = '2014-01-01'
SET #endDate = '2014-01-31';
with GetDates AS
(
SELECT #startDate AS TheDate
UNION ALL
SELECT DATEADD("DD", 1, TheDate) FROM GetDates
WHERE TheDate < #endDate
) INSERT INTO #dates SELECT TheDate FROM GetDates
OPTION (MAXRECURSION 0)
SELECT DISTINCT YEAR(d.CurrentDate), MONTH(d.CurrentDate) FROM #dates d
LEFT JOIN InstallmentDate i ON i.InstallmentDate BETWEEN #startDate AND #endDate AND OrderId = 1
WHERE i.InstallmentDate IS NULL
Hope this helps...
Is there a way to get the number of Mondays in a given month (and year) without using T-SQL?
Thanks
I'm not sure what you mean by saying:
Is there a way to get the number of Mondays in a given month (and
year) without using T-SQL?
If you are hoping for a universal code fragment that will do this across all databases, forget it. I doubt that you'll even be able to get a version to run on two different databases. Dates and things like weekdays tend to be be implemented differently across database vendors.
Here is the TSQL way (Monday Month Count):
;with AllDates AS
(SELECT CONVERT(datetime,CONVERT(varchar(6),GETDATE(),112)+'01') AS DateOf
UNION ALL
SELECT DateOf+1
FROM AllDates
WHERE
MONTH(DateOf+1)=MONTH(CONVERT(datetime,CONVERT(varchar(6),GETDATE(),112)+'01'))
)
SELECT COUNT(DateOf) AS MondayCountMonth
FROM AllDates
WHERE DATENAME(weekday,DateOf)='Monday'
Here is the TSQL way (Monday Year Count):
;with AllDates AS
(SELECT CONVERT(datetime,CONVERT(varchar(4),GETDATE(),112)+'0101') AS DateOf
UNION ALL
SELECT DateOf+1
FROM AllDates
WHERE
YEAR(DateOf+1)=Year(CONVERT(datetime,CONVERT(varchar(4),GETDATE(),112)+'0101'))
)
SELECT COUNT(DateOf) AS MondayCountYear
FROM AllDates
WHERE DATENAME(weekday,DateOf)='Monday'
OPTION (MAXRECURSION 367)
EDIT based on OP comment, here is a version which finds the monthly and yearly Monday counts as sub-queries within another query:
DECLARE #YourTable table (Col1 int, Col2 varchar(5))
INSERT #YourTable VALUES (1,'aaa')
INSERT #YourTable VALUES (2,'bbb')
INSERT #YourTable VALUES (3,'ccc')
;with MonthMondayCount AS
(SELECT CONVERT(datetime,CONVERT(varchar(6),GETDATE(),112)+'01') AS DateOf
UNION ALL
SELECT DateOf+1
FROM MonthMondayCount
WHERE
MONTH(DateOf+1)=MONTH(CONVERT(datetime,CONVERT(varchar(6),GETDATE(),112)+'01'))
)
,YearMondayCount AS
(SELECT CONVERT(datetime,CONVERT(varchar(4),GETDATE(),112)+'0101') AS DateOf
UNION ALL
SELECT DateOf+1
FROM YearMondayCount
WHERE
YEAR(DateOf+1)=Year(CONVERT(datetime,CONVERT(varchar(4),GETDATE(),112)+'0101'))
)
SELECT
y.*
,(SELECT COUNT(DateOf) AS MondayCountMonth FROM MonthMondayCount WHERE DATENAME(weekday,DateOf)='Monday') AS MondayCountMonth
,(SELECT COUNT(DateOf) AS MondayCountYear FROM YearMondayCount WHERE DATENAME(weekday,DateOf)='Monday') AS MondayCountYear
FROM #YourTable y
OPTION (MAXRECURSION 367)
OUTPUT:
Col1 Col2 MondayCountMonth MondayCountYear
----------- ----- ---------------- ---------------
1 aaa 5 52
2 bbb 5 52
3 ccc 5 52
(3 row(s) affected)
Try this : )
DECLARE #tmpDate as date
set #tmpDate = getdate(); --you can add any date
DECLARE #Startdate as varchar( 8)
DECLARE #Enddate as varchar( 8)
SELECT #Startdate = replace(convert(varchar,cast(DATEADD(month, DATEDIFF(month, 0, #tmpDate), 0) as date) , 111), '/', '');
SELECT #Enddate = replace(convert(varchar, cast(DATEADD(s,-1,DATEADD(mm, DATEDIFF(m,0,#tmpDate)+1,0)) as date), 111), '/', '');
with [dates] as (
select convert(date , #Startdate ) as [date] --start
union all
select dateadd(day , 1 , [date])
from [dates]
where [date] < #Enddate )
Select X.WeekDayNumber, count(X.WeekDayNumber) as NumberOfDays
from (
SELECT [date] , DATEPART(weekday,[date] ) as WeekDayNumber
from [dates]
WHERE [date] IS NOT NULL)X
Group by X.WeekDayNumber
option (maxrecursion 0 )
( DATEADD( DAY, -1, DATEADD( MONTH, 1 , month + '-01' ) -
DATEADD( DAY, 7 - DATEPART( WEEKDAY, month + '-01' ), month + '-01' )
) DIV 7 + 1
I don't know how much ANSI SQL compatible this is but it works in MySql (not after the changes, it should work in SQL Server now).
month should be in 'yyyy-mm' format
I have a table with start and end dates in. My goal is to have a table that has grouped these dates into how many days the period spans. I thought I had the solution with a simple SQL statement (MS SQL Server 2005) but I want to exclude weekends.
SELECT DATEDIFF(D, StartDate, EndDate)+1 AS Days,
COUNT(ID) as Count
FROM myDateTable
GROUP BY DATEDIFF(D, StartDate, EndDate)
This gives a record set of:
Days Count
1 4
2 2
4 1
7 2
Is this possible to exclude the weekends in the SQL statement and if not can it be done using ASP and a array perhaps?
Well then, using Sql Server 2005, you can try something like
DECLARE #Table TABLE(
ID INT,
StartDate DATETIME,
EndDate DATETIME
)
INSERT INTO #Table (ID,StartDate,EndDate) SELECT 1, '25 Jan 2009', '31 Jan 2009'
INSERT INTO #Table (ID,StartDate,EndDate) SELECT 2, '01 Jan 2009', '07 Jan 2009'
INSERT INTO #Table (ID,StartDate,EndDate) SELECT 3, '01 Jan 2009', '14 Jan 2009'
DECLARE #MinDate DATETIME,
#MaxDate DATETIME
SELECT #MinDate = MIN(StartDate) ,
#MaxDate = MAX(EndDate)
FROM #Table
--Create a temp result set between the Min and Max dates, with all dates, and their weekday names
;WITH DayValues AS(
SELECT #MinDate DateVal,
DATENAME(dw, #MinDate) DateValName
UNION ALL
SELECT DateVal + 1,
DATENAME(dw, DateVal + 1) DateValName
FROM DayValues
WHERE DateVal + 1 <= #MaxDate
),
--select the count of days for each StartDate and EndDate pair, excluding Saturdays and Sundays
DateCounts AS(
SELECT ID,
(
SELECT COUNT(1)
FROM DayValues
WHERE DateVal BETWEEN StartDate AND EndDate
AND DateValName NOT IN ('Saturday', 'Sunday')
) DateCount
FROM #Table
)
--Now group and count
SELECT DateCount,
COUNT(ID) TotalCount
FROM DateCounts
GROUP BY DateCount
OPTION (MAXRECURSION 0)
Output
DateCount TotalCount
----------- -----------
5 2
10 1
EDIT: Brief Explenation
You need to determine the number of days between (and including) 2 dates, that are not weekends.
So using a CTE, I create a temporary result set of dates ebwteen the Min and Max dates, and their Weekday Name (eg Monday, Tuesday... Sunday).
Then, for each of your date pairs, I count the number of entries that does not correspond to Saturday and Sunday.
Here's an ASP function that counts days weekdays between two dates.
<%
Dim StartDate, EndDate
StartDate = CDate("1/1/2010")
EndDate = CDate("2/1/2010")
Response.Write(WeekDayCount(StartDate, EndDate))
Function WeekDayCount(StartDate, EndDate)
dim tempDate, dayCount
tempDate = StartDate
dayCount = 0
'Step forward one day, counting non-week days
While tempDate <> EndDate
'The 1 and 7 might need to be tweaked depending on the locale of your
'server. 1 = Sunday, 7 = Saturday
If DatePart("w", tempDate) <> 1 And DatePart("w", tempDate) <> 7 Then
dayCount = dayCount + 1
End If
tempDate = DateAdd("d", 1, tempDate)
Wend
WeekDayCount = dayCount
End Function
%>
Have a look at ##DATEFIRST,
and look a this;
SELECT DATEPART(DW,GETDATE()).
You should be able to run a query WHERE the 'DW' is not equal to the weekend numbers.