topic Filter not working as expected on bridged tables in DAX Commands and Tips

Filter not working as expected on bridged tables

Anonymous — Tue, 30 Mar 2021 14:36:26 GMT

In the table visual below I have 5 rows returned, which I believe to be correct. (See filters applied to table). I am expecting my measure 'CR Count' to also return a row count of 5 ; however, it appears to ignore the 'dw HSECaseCategoryDim'[Col Value] filter and returns 43.

What am I missing 😞

Re: Filter not working as expected on bridged tables

AlexisOlson — Tue, 30 Mar 2021 15:28:42 GMT

From your relationship diagram, you can see that the table 'dw HSECaseCategoryDim' does not filter 'dw HSECaseDim' nor does the reverse hold. They both filter the bridge table but not each other. In particular, the filter on 'Col Value' has no effect on the measure since it counts the rows of the fact table (which aren't filtered by 'Col Value').

The best option would probably be to flatten those dimension tables into a single one so that you have more of a star schema rather than a snowflake schema.

Re: Filter not working as expected on bridged tables

Anonymous — Wed, 31 Mar 2021 06:14:05 GMT

Very interesting. Why does the filtering appear to apply in the table visual in my report?

When I add the 'dw HSECaseOccurenceFact'[HSEDimKey] , (880 rows)

When I add and filter 'dw HSECaseDim'[Corporate Reportable Flag] = True , (43 rows)

When I add and filter 'dw HSECaseCatgeoryDim'[Col Value] = "Loss of primary containment (HCRs)", (5 rows)

And can I harness this in a measure?

Thanks again.

Re: Filter not working as expected on bridged tables

Anonymous — Wed, 31 Mar 2021 12:54:42 GMT

Turns out that it was my relationships that were wrong. This worked in the end.