Totals by Day of week over a 2 week period for 1 year - sql

Question

Adding the query (so far) and the result....
DECLARE #var_StartDate DATETIME
DECLARE #var_EndDate DATETIME
SET #var_StartDate = '11/25/2017' -- Set the start date
SET #var_EndDate = '11/23/2018'; --Set the end date
SELECT
DATENAME(DW, VTOTALS.APPLYDATE) AS Day,
FORMAT(SUM(TRANSACTIONS), '#,0.') AS Transactions
FROM
VTOTALS
WHERE
APPLYDATE BETWEEN #var_StartDate AND #var_EndDate
GROUP BY
DATENAME(DW, VTOTALS.APPLYDATE)
ORDER BY
CASE
WHEN DATENAME (DW, VTOTALS.APPLYDATE) = 'Sunday' THEN 1
WHEN DATENAME (DW, VTOTALS.APPLYDATE) = 'Monday' THEN 2
WHEN DATENAME (DW, VTOTALS.APPLYDATE) = 'Tuesday' THEN 3
WHEN DATENAME (DW, VTOTALS.APPLYDATE) = 'Wednesday' THEN 4
WHEN DATENAME (DW, VTOTALS.APPLYDATE) = 'Thursday' THEN 5
WHEN DATENAME (DW, VTOTALS.APPLYDATE) = 'Friday' THEN 6
WHEN DATENAME (DW, VTOTALS.APPLYDATE) = 'Saturday' THEN 7
END ASC
Output:
Day Transactions
Sunday 10,697,804
Monday 25,222,976
Tuesday 25,001,258
Wednesday 24,986,845
Thursday 25,039,354
Friday 24,591,728
Saturday 12,087,903
I am looking for transaction totals by day of week over each day of a pay period for a 1 year timeframe. I can get the DOW but want to split into DOW for week 1 and week 2 over the year between 11/25/17 - 11/23/18
Week 1
Sun 1,980
Mon 38,987
Tue 28,132
Wed 30,879
Thu 30,769
Fri 39,902
Sat 41,912
Week 2
Sun 2,280
Mon 37,987
Tue 29,132
Wed 36,879
Thu 39,769
Fri 42,902
Sat 44,912
Any thoughts?
Thanks

Answer 1

You want weeks that start on Sunday, so you can use the mode argument to week. If you just want the values for one year:
select week(dte, 0), sum(total)
from t
where dte >= '2017-01-01' and dte < '2018-01-01' -- or however you define "year"
group by week(dte, 0);

Answer 2

Take the number of days since some given date, and calculate X % 14. This divides the result by 14 and returns the remainder which will be a number in the range 0 through 13. If you want your result to start on a Sunday, then make sure the given date is a Sunday.
create table VTOTALS
(APPLYDATE date,
[TRANSACTIONS] money)
go
set nocount on
declare #Y int = 0
while #Y < 10000
begin
insert into VTOTALS(ApplyDate,Transactions)
values(
DateAdd(day, #Y % 1000,
'2017-01-01T00:00:00.000' ),
(#Y + 314159)%271828 )
set #Y=#Y+1
end
go
DECLARE #var_StartDate DATETIME
DECLARE #var_EndDate DATETIME
SET #var_StartDate = '2017-11-25T00:00:00.000' -- Set the start date
SET #var_EndDate = '2018-11-23T00:00:00.000'; -- Set the end date
with VWeeks as
( select
DateDiff(day,
'1899-12-31T00:00:00.000',
ApplyDate)%14
as ZeroToThirteen,
* from VTOTALS
WHERE
APPLYDATE BETWEEN #var_StartDate AND #var_EndDate )
SELECT
ZeroToThirteen / 7 + 1 as WeekNum,
DateName ( DW, DateAdd ( day,
ZeroToThirteen,
'1899-12-31T00:00:00.000' ) ) as DayName,
FORMAT(SUM(TRANSACTIONS), '#,0.') AS Transactions
FROM
VWeeks
GROUP BY
ZeroToThirteen
ORDER BY
ZeroToThirteen
returns
WeekNum DayName Transactions
----------- ------------------------------ ----------------
1 Sunday 12,307,100
1 Monday 12,307,360
1 Tuesday 12,307,620
1 Wednesday 12,307,880
1 Thursday 12,308,140
1 Friday 12,308,400
1 Saturday 12,308,660
2 Sunday 12,308,920
2 Monday 12,309,180
2 Tuesday 12,309,440
2 Wednesday 12,309,700
2 Thursday 12,309,960
2 Friday 12,310,220
2 Saturday 12,306,840