topic Re: Sum of a dim value for each row in a fact table in DAX Commands and Tips

Sum of a dim value for each row in a fact table

funkyman50 — Mon, 17 Feb 2025 22:21:44 GMT

I have a fact table [Fact].[Surgeries] that has columns like SurgeryDate, SurgeryDuration, SurgeryCost, SurgeonID (key to Dim.Surgeon), SurgeryID (key to Dim.Surgery).

In Dim.Surgery, there is a column SurgeryStandardDuration.

I am trying to get a comparison of actual duration vs standard duration via two SUM measures.

SUM(Fact.Surgeries[SurgeryDuration]) returns the accurate sum of minutes when grouped by surgeon but SUM(Dim.Surgery[SurgeryStandardDuration]) is only returning a sum of one of each surgery as filtered by the SurgeryID.

Is there a way to write the DAX to apply the SurgeryStandardDuration value to each row in the Surgeries fact before summing or do I need to make a calculated column in Fact.Surgeries and then sum that?

Re: Sum of a dim value for each row in a fact table

quantumudit — Tue, 18 Feb 2025 06:09:44 GMT

Hello funkyman50

Could you please provide sample data that fully represents your issue or question in a usable format, rather than a screenshot? Ensure the dataset is anonymized and does not contain any sensitive or unrelated information.

Additionally, it would be very helpful if you could share the expected outcome based on the provided data - this can be in any format, including a screenshot. Having a clear reference for comparison will significantly improve the chances of getting the correct solution in the first response.

For best practices, you may find the following links useful:

Also let us know whether you prefer having a calculated column or, a measure. As far my current understanding of your issue, I think you can explore the RELATED() function in DAX to resolve your issue.

Here are the links to understand how RELATED() function works:

Best Regards,
Udit

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Re: Sum of a dim value for each row in a fact table

sjoerdvn — Tue, 18 Feb 2025 09:07:51 GMT

Try this measure:

Std Surgery Duration = SUMX('Fact.Surgeries',RELATED('Dim.Surgery'[SurgeryStandardDuration]))

Re: Sum of a dim value for each row in a fact table

funkyman50 — Tue, 18 Feb 2025 15:04:07 GMT

This worked great. Thank you!