Summarizing / aggregating in parent-child hierarchies

[SoundChimera]

Hi, I'm trying to make a report with a slicer that shows employee headcount plan for departments. There are many departments in different hierarchies.

My "headcount plan" table looks like this:

DEPID	Department Name	Parent ID	Parent Path	Headcount Plan
1	IT	1	1	15
2	IT - Web Development	1	1 | 2	7
3	Finance	3	3	25
4	HR	4	4	17
5	HR - Training	4	4 | 5	5
6	HR - Strategy	4	4 | 6	12

The slicer I have shows departments in a hierarchical fashion. There are 4 levels in the hierarchy. I used a PATHITEM DAX measure to flatten the hierarchy, which I use for the slicer.

When I just sum all of the Headcount Plan using SUM(Table[Headcount Plan]), it sums child values on top of the parent values, leading to inaccuracy and added values. I want to show it as a card that changes its value upon a filter is applied.

How would one aggregate the Headcount Plan column without summing child values on top of parent values?

Please let me know if clarifications are needed.

Thank you.

[HoangHugo · Accepted solution]

Hi, I understant you want to SUM the parent deparment without child deparment. And child departments  have "|" in its parent path, so I will use it to remove child departments.

Measure = CALCULATE (SUM(Headcount plan),SEARCH("|",parent path column,1,blank())=BLANK())