Introduction
This article will demonstrate how to quantify on a date axis the availability \ unavailability of products given only the start and end date of each product's availability (See data format in "ProductData,csv" table below).
Business Case
Viewing how many campaigns were available on a collection of dates, how many machines were running or how many products were available in a collection of dates.
Example
Steps
To Achieve this we will be creating 3 tables in our ElastiCube:
- ProductData: (ProductId, StartDate, EndDate) Source table, containing for each product its ID and availability date
- AllDates: (ProductId, dates) Custom table, holds a Cartesian product of all dates given (StartDate and EndDate values) multiplied be all products
- Availability: (dates, avail, notavail) For each date it holds the number of available products and the number of unavailable products
- Add your data in a similar format of ProductData. Make note of the column names as we will be referring to them in the next steps.
- To create AllDates table either:
- Import a table into the ElastiCube containing all dates in the range and rename it to "AllDates" - this is the preferred method
OR
- Add a custom table with the following dynamic script (changing table and column names accordingly) - this is the less-preferred method as it may result in 'holes' in the timeline if some dates values are not imported originally
SELECT o.ProductId, c.dates
FROM [productData.csv] o,
(SELECT a.StartDate dates
FROM [productData.csv] a
UNION
SELECT b.EndDate
FROM [productData.csv] b) c
ORDER BY o.ProductId desc - To create Availability table add a custom table with the following script (changing table and column names accordingly):
SELECT DISTINCT a.dates, res1.avail, res2.notavail
FROM [AllDates] a,
(SELECT a.dates, count(b.ProductId) avail
FROM [AllDates] a,
[productData.csv]b
WHERE a.ProductId = b.ProductId
AND a.dates <= b.EndDate
AND a.dates >= b.StartDate
GROUP BY a.dates
) res1,
(SELECT a.dates, count(b.ProductId) notavail
FROM [AllDates] a,
[productData.csv]b
WHERE a.ProductId = b.ProductId
AND (a.dates > b.EndDate
or a.dates < b.StartDate)
GROUP BY a.dates
) res2
WHERE a.dates = res1.dates
AND a.dates = res2.dates - In Sisense web, add a new Columns Widget and choose in the right pane a "Stacked" display
- Create calculated measure "SUM([Notavail])" and name "Not Available". Similarly create "SUM([avail]) and name "Available". Pick your colors and you are good to go!
