Column derived logical of the MDB - visit bounced

In Web Metrics, a "visit rebounded" when a session views a page on a Web site and then leaves. In my table of facts, I capture the "total pages" read for each session and I set this metric in my Business Model with a rule of aggregation "sum". I'm trying to use this measure to calculate the metric 'bounced visit' but I'm running into issues.

Session ID number Total of Pages
1179860475 5
1179861625 1 < = this is a visit of rebound
1179861920 7
1179866260 2
1179868693 13

If I set 'bounced visits' as

BOX WHEN "total pages" = 1 THEN 1 ELSE END 0

What I see in the newspapers of session is:

CASE amount WHEN ("total number of pages") = 1 THEN 1 ELSE END 0

The aggregation of the pages 'total' is made first, and then the derived metric calculation. This leads to incorrect results. Is in any way to solve this in the business model? I know that I can go back to the ETL, calculate a metric "bounce tour", store it in the fact, create aggregates, etc.. I was looking for a short term solution.

I tried other things:

(1) make a copy of the column "total pages" and put off aggregation, call him 'total pages - no aggregation '.

This leads to queries of the form:

Select distinct T22583. TOTAL_PAGES C1
Of
WEB_SESSIONS_A1 T22583
order of c1


(2) create a logical column based on 'total pages - no aggregation '.

has bounced visit = CASE WHEN EnterpriseWarehouse. "" Web sessions. "' Total Pages - no aggregation ' = 1 THEN 1 ELSE END 0

This leads to [nQSError: 14020] none of the fact tables are compatible with the query request Web Sessions.bounced visit.

Sorry that if I wasn't clear... you don't need a new select statement for this... you need to do is to define a column using the physical layer (not an existing column of logic in use)... To do this, you must create a new column in MDB... then you go under the mapping tab and click on button... and you enter it formula using the physical column... Let me know if it is clear...

Tags: Business Intelligence

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