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Posted on 2013-06-20
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I have a table Calendar which has only BusinessDates and excludes Sat and Sun and Holidays.
I have another table Products which has the Code, BusDate, ID, ItemSold

Need to create a join such that if the Products BusDate does not exist in the Calendar table then
add the ItemsSold to the next   BusDate row for a given ProductCode
So the items sold on a Sat, will be added to a  Sun, which will then be added to a Monday,
assuming is not a holiday.
If Monday was a holiday then it would be added to the Tuesdays bucket, and the addition would stop

Calendar
BusDate datetime

Products

ProductCode
BusDate datetime
ItemsSold int

Example
ProductCode, BusDate,    ItemSold
ABCD         06/14/2013   5
ABCD         06/15/2013   3
ABCD         06/16/2013   2
ABCD         06/17/2013   2
ABCD         06/18/2013   1

The final result should be
ABCD         06/14/2013   5
ABCD         06/17/2013   7
ABCD         06/18/2013   1
0
Question by:countrymeister
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LVL 49

Accepted Solution

PortletPaul earned 2000 total points
ID: 39264748
``````results:
PRODUCTCODE	BUSDATE	ITEMSOLD
ABCD	June, 14 2013 		5
ABCD	June, 17 2013 		7
ABCD	June, 18 2013 		1

-- from this code

select
p.ProductCode
, ca.cdate        as BusDate
, sum(p.ItemSold) as ItemSold
from products as p
cross apply (
select top 1 busdate
from calendar as c
where c.busdate >= p.busdate
order by c.busdate ASC
) as ca (cdate)
group by
p.ProductCode
, ca.cdate
;
``````
http://sqlfiddle.com/#!3/41cc1/7
0

LVL 41

Expert Comment

ID: 39264758
try this query.
``````;WITH CTE
AS (SELECT p.ProductCode,
p.BusDate,
FROM Products p
LEFT JOIN Calendar c
ON p.BusDate <= c.BusDate
GROUP BY p.ProductCode,
p.BusDate)
SELECT c.ProductCode,
SUM(p.ItemSold)
FROM CTE c
JOIN Products p
ON c.ProductCode = p.ProductCode
AND c.BusDate = p.BusDate
GROUP BY c.ProductCode,
``````
see the sample here: http://sqlfiddle.com/#!3/9652d/12
0

LVL 1

Author Closing Comment

ID: 39264774
Awesome, thank you
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