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Art of BI: OBI Time Dimension Weeks In a Month – Prototype Hack

Christian Screen | | February 5, 2010

I was looking to create a formula that required averaging based on the number of week in the given month. As an example Monthly Sales Total / # Weeks In Month.  Since this is a fiscal calendar the weeks are usually standardized and shouldn’t change that often.  So, if the fiscal calendar is on a 4-4-5 or 4-5-4 the logic is rather straightfoward.

I couldn’t make changes to the underlying Calendar dimension table and I couldn’t recall how to do this programmatically in OBI so I went with what I will call a quick prototyping hack.  Here it is below.

[simage=97,320,y,center]

CASE  WHEN “Indirect Sales”.DIM_TIME.MONTH_NUMBER IN (3, 6, 9, 12) THEN 5 ELSE 4 END

This worked out perfectly as a place holder as we can see by a quick ad-hoc look at the new calculated measure.

[simage=98,400,y,center]

If anyone has the right or clever way of doing this leave a comment.

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